./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/parallel-barrier.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 b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:03:48,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:03:49,014 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 13:03:49,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:03:49,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:03:49,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:03:49,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:03:49,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:03:49,038 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:03:49,038 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:03:49,038 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:03:49,038 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:03:49,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:03:49,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:03:49,041 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:03:49,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:03:49,041 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:03:49,041 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:03:49,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:03:49,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:03:49,041 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 13:03:49,041 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 13:03:49,042 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 13:03:49,042 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:03:49,042 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 13:03:49,042 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:03:49,043 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:03:49,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:03:49,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:03:49,043 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 -> b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c [2025-02-06 13:03:49,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:03:49,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:03:49,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:03:49,226 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:03:49,226 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:03:49,226 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2025-02-06 13:03:50,327 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/58e3a391f/7ce050f4e42a4b7da948cea1af1ff6db/FLAG6fce4b48b [2025-02-06 13:03:50,602 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:03:50,603 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2025-02-06 13:03:50,608 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/58e3a391f/7ce050f4e42a4b7da948cea1af1ff6db/FLAG6fce4b48b [2025-02-06 13:03:50,905 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/58e3a391f/7ce050f4e42a4b7da948cea1af1ff6db [2025-02-06 13:03:50,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:03:50,907 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:03:50,908 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:03:50,908 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:03:50,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:03:50,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:03:50" (1/1) ... [2025-02-06 13:03:50,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4922ca42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:50, skipping insertion in model container [2025-02-06 13:03:50,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:03:50" (1/1) ... [2025-02-06 13:03:50,922 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:03:51,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:03:51,047 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:03:51,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:03:51,085 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:03:51,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51 WrapperNode [2025-02-06 13:03:51,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:03:51,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:03:51,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:03:51,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:03:51,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51" (1/1) ... [2025-02-06 13:03:51,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51" (1/1) ... [2025-02-06 13:03:51,120 INFO L138 Inliner]: procedures = 22, calls = 21, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 212 [2025-02-06 13:03:51,121 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:03:51,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:03:51,122 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:03:51,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:03:51,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51" (1/1) ... [2025-02-06 13:03:51,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51" (1/1) ... [2025-02-06 13:03:51,130 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51" (1/1) ... [2025-02-06 13:03:51,150 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 13:03:51,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51" (1/1) ... [2025-02-06 13:03:51,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51" (1/1) ... [2025-02-06 13:03:51,157 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51" (1/1) ... [2025-02-06 13:03:51,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51" (1/1) ... [2025-02-06 13:03:51,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51" (1/1) ... [2025-02-06 13:03:51,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51" (1/1) ... [2025-02-06 13:03:51,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:03:51,169 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:03:51,169 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:03:51,169 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:03:51,170 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51" (1/1) ... [2025-02-06 13:03:51,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:03:51,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:03:51,195 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 13:03:51,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 13:03:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:03:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 13:03:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 13:03:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 13:03:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 13:03:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 13:03:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 13:03:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 13:03:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 13:03:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 13:03:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-02-06 13:03:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-02-06 13:03:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-02-06 13:03:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-02-06 13:03:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:03:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:03:51,214 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 13:03:51,280 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:03:51,281 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:03:51,450 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 13:03:51,451 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:03:51,619 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:03:51,619 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:03:51,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:03:51 BoogieIcfgContainer [2025-02-06 13:03:51,619 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:03:51,625 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:03:51,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:03:51,629 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:03:51,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:03:50" (1/3) ... [2025-02-06 13:03:51,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682bed68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:03:51, skipping insertion in model container [2025-02-06 13:03:51,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:03:51" (2/3) ... [2025-02-06 13:03:51,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682bed68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:03:51, skipping insertion in model container [2025-02-06 13:03:51,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:03:51" (3/3) ... [2025-02-06 13:03:51,632 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2025-02-06 13:03:51,642 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:03:51,644 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-barrier.wvr.c that has 7 procedures, 75 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-06 13:03:51,644 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 13:03:51,740 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2025-02-06 13:03:51,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 84 transitions, 234 flow [2025-02-06 13:03:51,803 INFO L124 PetriNetUnfolderBase]: 4/72 cut-off events. [2025-02-06 13:03:51,805 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-06 13:03:51,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 72 events. 4/72 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2025-02-06 13:03:51,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 84 transitions, 234 flow [2025-02-06 13:03:51,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 71 transitions, 190 flow [2025-02-06 13:03:51,815 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:03:51,822 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;@905a549, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:03:51,822 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-02-06 13:03:51,845 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:03:51,845 INFO L124 PetriNetUnfolderBase]: 4/68 cut-off events. [2025-02-06 13:03:51,845 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-06 13:03:51,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:03:51,846 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:03:51,846 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-02-06 13:03:51,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:03:51,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1204420640, now seen corresponding path program 1 times [2025-02-06 13:03:51,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:03:51,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299535519] [2025-02-06 13:03:51,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:03:51,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:03:51,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-06 13:03:52,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-06 13:03:52,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:03:52,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:03:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:03:52,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:03:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299535519] [2025-02-06 13:03:52,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299535519] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:03:52,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:03:52,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 13:03:52,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617622197] [2025-02-06 13:03:52,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:03:52,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:03:52,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:03:52,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:03:52,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:03:52,258 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-02-06 13:03:52,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:03:52,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:03:52,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-02-06 13:03:52,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:03:57,772 INFO L124 PetriNetUnfolderBase]: 90013/113964 cut-off events. [2025-02-06 13:03:57,772 INFO L125 PetriNetUnfolderBase]: For 7364/7364 co-relation queries the response was YES. [2025-02-06 13:03:57,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239389 conditions, 113964 events. 90013/113964 cut-off events. For 7364/7364 co-relation queries the response was YES. Maximal size of possible extension queue 1737. Compared 564300 event pairs, 53048 based on Foata normal form. 1985/113165 useless extension candidates. Maximal degree in co-relation 238400. Up to 76768 conditions per place. [2025-02-06 13:03:58,290 INFO L140 encePairwiseOnDemand]: 82/88 looper letters, 93 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2025-02-06 13:03:58,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 98 transitions, 459 flow [2025-02-06 13:03:58,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:03:58,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:03:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2025-02-06 13:03:58,301 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2025-02-06 13:03:58,302 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 190 flow. Second operand 3 states and 123 transitions. [2025-02-06 13:03:58,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 98 transitions, 459 flow [2025-02-06 13:03:58,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 413 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-02-06 13:03:58,508 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 168 flow [2025-02-06 13:03:58,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2025-02-06 13:03:58,511 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -11 predicate places. [2025-02-06 13:03:58,511 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 168 flow [2025-02-06 13:03:58,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:03:58,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:03:58,512 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:03:58,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 13:03:58,512 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-02-06 13:03:58,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:03:58,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1793318442, now seen corresponding path program 2 times [2025-02-06 13:03:58,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:03:58,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198406438] [2025-02-06 13:03:58,514 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:03:58,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:03:58,529 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 1 equivalence classes. [2025-02-06 13:03:58,546 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-06 13:03:58,547 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:03:58,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:03:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:03:58,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:03:58,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198406438] [2025-02-06 13:03:58,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198406438] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:03:58,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:03:58,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 13:03:58,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217116932] [2025-02-06 13:03:58,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:03:58,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:03:58,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:03:58,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:03:58,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:03:58,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-02-06 13:03:58,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:03:58,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:03:58,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-02-06 13:03:58,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:04:02,154 INFO L124 PetriNetUnfolderBase]: 68959/87699 cut-off events. [2025-02-06 13:04:02,155 INFO L125 PetriNetUnfolderBase]: For 4142/4142 co-relation queries the response was YES. [2025-02-06 13:04:02,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182286 conditions, 87699 events. 68959/87699 cut-off events. For 4142/4142 co-relation queries the response was YES. Maximal size of possible extension queue 1283. Compared 420137 event pairs, 40785 based on Foata normal form. 1544/87308 useless extension candidates. Maximal degree in co-relation 79534. Up to 59185 conditions per place. [2025-02-06 13:04:02,432 INFO L140 encePairwiseOnDemand]: 83/88 looper letters, 92 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2025-02-06 13:04:02,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 431 flow [2025-02-06 13:04:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:04:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:04:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2025-02-06 13:04:02,434 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-02-06 13:04:02,434 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 168 flow. Second operand 3 states and 121 transitions. [2025-02-06 13:04:02,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 431 flow [2025-02-06 13:04:02,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:04:02,471 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 174 flow [2025-02-06 13:04:02,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2025-02-06 13:04:02,472 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2025-02-06 13:04:02,472 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 174 flow [2025-02-06 13:04:02,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:04:02,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:04:02,472 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:04:02,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 13:04:02,473 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-02-06 13:04:02,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:04:02,473 INFO L85 PathProgramCache]: Analyzing trace with hash -695177722, now seen corresponding path program 3 times [2025-02-06 13:04:02,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:04:02,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669064527] [2025-02-06 13:04:02,473 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:04:02,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:04:02,487 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 65 statements into 1 equivalence classes. [2025-02-06 13:04:02,508 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-06 13:04:02,508 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 13:04:02,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:04:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:04:03,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:04:03,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669064527] [2025-02-06 13:04:03,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669064527] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:04:03,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:04:03,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2025-02-06 13:04:03,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614877730] [2025-02-06 13:04:03,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:04:03,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 13:04:03,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:04:03,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 13:04:03,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2025-02-06 13:04:03,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-02-06 13:04:03,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 174 flow. Second operand has 21 states, 21 states have (on average 11.047619047619047) internal successors, (232), 21 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:04:03,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:04:03,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-02-06 13:04:03,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:04:10,575 INFO L124 PetriNetUnfolderBase]: 93797/119352 cut-off events. [2025-02-06 13:04:10,576 INFO L125 PetriNetUnfolderBase]: For 6830/6830 co-relation queries the response was YES. [2025-02-06 13:04:10,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252143 conditions, 119352 events. 93797/119352 cut-off events. For 6830/6830 co-relation queries the response was YES. Maximal size of possible extension queue 1529. Compared 586749 event pairs, 9219 based on Foata normal form. 2/116520 useless extension candidates. Maximal degree in co-relation 112217. Up to 69520 conditions per place. [2025-02-06 13:04:11,000 INFO L140 encePairwiseOnDemand]: 65/88 looper letters, 576 selfloop transitions, 191 changer transitions 58/826 dead transitions. [2025-02-06 13:04:11,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 826 transitions, 3603 flow [2025-02-06 13:04:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-02-06 13:04:11,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-02-06 13:04:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1315 transitions. [2025-02-06 13:04:11,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.24497019374068554 [2025-02-06 13:04:11,010 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 174 flow. Second operand 61 states and 1315 transitions. [2025-02-06 13:04:11,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 826 transitions, 3603 flow [2025-02-06 13:04:11,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 826 transitions, 3555 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:04:11,141 INFO L231 Difference]: Finished difference. Result has 165 places, 263 transitions, 1235 flow [2025-02-06 13:04:11,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=1235, PETRI_PLACES=165, PETRI_TRANSITIONS=263} [2025-02-06 13:04:11,142 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 79 predicate places. [2025-02-06 13:04:11,142 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 263 transitions, 1235 flow [2025-02-06 13:04:11,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.047619047619047) internal successors, (232), 21 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:04:11,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:04:11,142 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:04:11,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 13:04:11,143 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-02-06 13:04:11,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:04:11,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1440088590, now seen corresponding path program 4 times [2025-02-06 13:04:11,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:04:11,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878535814] [2025-02-06 13:04:11,143 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:04:11,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:04:11,151 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 65 statements into 2 equivalence classes. [2025-02-06 13:04:11,158 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-02-06 13:04:11,159 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:04:11,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:04:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:04:11,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:04:11,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878535814] [2025-02-06 13:04:11,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878535814] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:04:11,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:04:11,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 13:04:11,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550223140] [2025-02-06 13:04:11,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:04:11,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:04:11,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:04:11,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:04:11,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:04:11,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-02-06 13:04:11,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 263 transitions, 1235 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:04:11,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:04:11,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-02-06 13:04:11,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:04:17,266 INFO L124 PetriNetUnfolderBase]: 75447/96421 cut-off events. [2025-02-06 13:04:17,266 INFO L125 PetriNetUnfolderBase]: For 262907/262907 co-relation queries the response was YES. [2025-02-06 13:04:17,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305693 conditions, 96421 events. 75447/96421 cut-off events. For 262907/262907 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 471011 event pairs, 33785 based on Foata normal form. 1422/95428 useless extension candidates. Maximal degree in co-relation 305652. Up to 61919 conditions per place. [2025-02-06 13:04:18,068 INFO L140 encePairwiseOnDemand]: 83/88 looper letters, 352 selfloop transitions, 5 changer transitions 0/358 dead transitions. [2025-02-06 13:04:18,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 358 transitions, 2407 flow [2025-02-06 13:04:18,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:04:18,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:04:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2025-02-06 13:04:18,069 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2025-02-06 13:04:18,069 INFO L175 Difference]: Start difference. First operand has 165 places, 263 transitions, 1235 flow. Second operand 3 states and 123 transitions. [2025-02-06 13:04:18,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 358 transitions, 2407 flow [2025-02-06 13:04:18,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 358 transitions, 2391 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-02-06 13:04:18,939 INFO L231 Difference]: Finished difference. Result has 164 places, 262 transitions, 1244 flow [2025-02-06 13:04:18,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1244, PETRI_PLACES=164, PETRI_TRANSITIONS=262} [2025-02-06 13:04:18,939 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 78 predicate places. [2025-02-06 13:04:18,939 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 262 transitions, 1244 flow [2025-02-06 13:04:18,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:04:18,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:04:18,940 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:04:18,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 13:04:18,940 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-02-06 13:04:18,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:04:18,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1410691908, now seen corresponding path program 5 times [2025-02-06 13:04:18,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:04:18,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645625846] [2025-02-06 13:04:18,941 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:04:18,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:04:18,947 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 1 equivalence classes. [2025-02-06 13:04:18,954 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-06 13:04:18,954 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:04:18,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:04:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:04:19,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:04:19,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645625846] [2025-02-06 13:04:19,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645625846] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:04:19,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:04:19,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2025-02-06 13:04:19,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208915740] [2025-02-06 13:04:19,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:04:19,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-06 13:04:19,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:04:19,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-06 13:04:19,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2025-02-06 13:04:19,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-02-06 13:04:19,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 262 transitions, 1244 flow. Second operand has 22 states, 22 states have (on average 10.909090909090908) internal successors, (240), 22 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:04:19,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:04:19,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-02-06 13:04:19,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:04:31,774 INFO L124 PetriNetUnfolderBase]: 112922/144757 cut-off events. [2025-02-06 13:04:31,774 INFO L125 PetriNetUnfolderBase]: For 373594/373594 co-relation queries the response was YES. [2025-02-06 13:04:32,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463559 conditions, 144757 events. 112922/144757 cut-off events. For 373594/373594 co-relation queries the response was YES. Maximal size of possible extension queue 2170. Compared 746838 event pairs, 11403 based on Foata normal form. 1/140755 useless extension candidates. Maximal degree in co-relation 455565. Up to 70845 conditions per place. [2025-02-06 13:04:33,041 INFO L140 encePairwiseOnDemand]: 65/88 looper letters, 824 selfloop transitions, 250 changer transitions 30/1105 dead transitions. [2025-02-06 13:04:33,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1105 transitions, 6818 flow [2025-02-06 13:04:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-02-06 13:04:33,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-02-06 13:04:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1385 transitions. [2025-02-06 13:04:33,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2580104321907601 [2025-02-06 13:04:33,046 INFO L175 Difference]: Start difference. First operand has 164 places, 262 transitions, 1244 flow. Second operand 61 states and 1385 transitions. [2025-02-06 13:04:33,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 1105 transitions, 6818 flow