./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --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/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:59:25,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:59:25,596 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:59:25,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:59:25,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:59:25,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:59:25,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:59:25,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:59:25,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:59:25,630 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:59:25,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:59:25,630 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:59:25,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:59:25,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:59:25,631 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:59:25,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:59:25,631 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:59:25,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:59:25,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:59:25,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:59:25,631 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:59:25,632 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:59:25,632 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:59:25,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:59:25,632 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:59:25,632 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:59:25,632 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:59:25,632 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:59:25,632 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:59:25,632 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:59:25,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:59:25,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:59:25,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:59:25,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:59:25,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:59:25,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:59:25,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:59:25,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:59:25,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:59:25,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:59:25,633 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:59:25,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:59:25,633 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 -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2025-02-06 12:59:25,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:59:25,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:59:25,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:59:25,943 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:59:25,943 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:59:25,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2025-02-06 12:59:27,270 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cca0fac7b/c9972247efe547639c86b8d27ac68960/FLAGbc90734bf [2025-02-06 12:59:27,595 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:59:27,596 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2025-02-06 12:59:27,608 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cca0fac7b/c9972247efe547639c86b8d27ac68960/FLAGbc90734bf [2025-02-06 12:59:27,621 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cca0fac7b/c9972247efe547639c86b8d27ac68960 [2025-02-06 12:59:27,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:59:27,625 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:59:27,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:59:27,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:59:27,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:59:27,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:59:27" (1/1) ... [2025-02-06 12:59:27,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a4481b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:27, skipping insertion in model container [2025-02-06 12:59:27,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:59:27" (1/1) ... [2025-02-06 12:59:27,658 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:59:28,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:59:28,024 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:59:28,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:59:28,127 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:59:28,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28 WrapperNode [2025-02-06 12:59:28,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:59:28,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:59:28,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:59:28,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:59:28,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28" (1/1) ... [2025-02-06 12:59:28,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28" (1/1) ... [2025-02-06 12:59:28,163 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 145 [2025-02-06 12:59:28,163 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:59:28,164 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:59:28,164 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:59:28,164 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:59:28,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28" (1/1) ... [2025-02-06 12:59:28,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28" (1/1) ... [2025-02-06 12:59:28,173 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28" (1/1) ... [2025-02-06 12:59:28,186 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2025-02-06 12:59:28,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28" (1/1) ... [2025-02-06 12:59:28,187 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28" (1/1) ... [2025-02-06 12:59:28,192 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28" (1/1) ... [2025-02-06 12:59:28,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28" (1/1) ... [2025-02-06 12:59:28,194 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28" (1/1) ... [2025-02-06 12:59:28,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28" (1/1) ... [2025-02-06 12:59:28,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:59:28,198 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:59:28,198 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:59:28,198 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:59:28,199 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28" (1/1) ... [2025-02-06 12:59:28,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:59:28,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:59:28,226 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 12:59:28,229 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 12:59:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-02-06 12:59:28,244 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-02-06 12:59:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 12:59:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:59:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2025-02-06 12:59:28,245 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2025-02-06 12:59:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 12:59:28,245 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 12:59:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:59:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 12:59:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 12:59:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 12:59:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:59:28,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:59:28,246 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 12:59:28,370 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:59:28,371 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:59:28,648 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:59:28,649 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:59:28,806 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:59:28,806 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:59:28,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:59:28 BoogieIcfgContainer [2025-02-06 12:59:28,807 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:59:28,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:59:28,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:59:28,813 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:59:28,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:59:27" (1/3) ... [2025-02-06 12:59:28,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e402939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:59:28, skipping insertion in model container [2025-02-06 12:59:28,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:28" (2/3) ... [2025-02-06 12:59:28,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e402939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:59:28, skipping insertion in model container [2025-02-06 12:59:28,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:59:28" (3/3) ... [2025-02-06 12:59:28,816 INFO L128 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2025-02-06 12:59:28,830 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:59:28,832 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 36-apron_21-traces-cluster-based_true.i that has 4 procedures, 74 locations, 1 initial locations, 0 loop locations, and 5 error locations. [2025-02-06 12:59:28,832 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:59:28,927 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 12:59:28,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 176 flow [2025-02-06 12:59:29,000 INFO L124 PetriNetUnfolderBase]: 9/79 cut-off events. [2025-02-06 12:59:29,002 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:59:29,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 9/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 196 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2025-02-06 12:59:29,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 176 flow [2025-02-06 12:59:29,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 79 transitions, 167 flow [2025-02-06 12:59:29,022 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:59:29,033 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;@158c9942, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:59:29,033 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-02-06 12:59:29,050 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:59:29,051 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2025-02-06 12:59:29,051 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:59:29,051 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:29,052 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:59:29,053 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2025-02-06 12:59:29,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1965515156, now seen corresponding path program 1 times [2025-02-06 12:59:29,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:29,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932281139] [2025-02-06 12:59:29,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:59:29,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:29,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 12:59:29,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 12:59:29,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:59:29,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:29,505 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 12:59:29,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:29,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932281139] [2025-02-06 12:59:29,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932281139] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:59:29,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:59:29,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:59:29,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380606788] [2025-02-06 12:59:29,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:59:29,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:59:29,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:59:29,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:59:29,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:59:29,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 82 [2025-02-06 12:59:29,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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 12:59:29,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:59:29,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 82 [2025-02-06 12:59:29,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:59:34,638 INFO L124 PetriNetUnfolderBase]: 43763/66723 cut-off events. [2025-02-06 12:59:34,639 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2025-02-06 12:59:34,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127822 conditions, 66723 events. 43763/66723 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 1637. Compared 517105 event pairs, 10183 based on Foata normal form. 9248/75338 useless extension candidates. Maximal degree in co-relation 127811. Up to 16083 conditions per place. [2025-02-06 12:59:35,062 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 218 selfloop transitions, 11 changer transitions 0/250 dead transitions. [2025-02-06 12:59:35,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 250 transitions, 988 flow [2025-02-06 12:59:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:59:35,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 12:59:35,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2025-02-06 12:59:35,082 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.711890243902439 [2025-02-06 12:59:35,084 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 167 flow. Second operand 8 states and 467 transitions. [2025-02-06 12:59:35,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 250 transitions, 988 flow [2025-02-06 12:59:35,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 250 transitions, 978 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 12:59:35,100 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 201 flow [2025-02-06 12:59:35,103 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=201, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2025-02-06 12:59:35,108 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 4 predicate places. [2025-02-06 12:59:35,108 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 201 flow [2025-02-06 12:59:35,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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 12:59:35,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:35,109 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:59:35,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 12:59:35,110 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2025-02-06 12:59:35,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:35,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1681588559, now seen corresponding path program 1 times [2025-02-06 12:59:35,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:35,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592884335] [2025-02-06 12:59:35,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:59:35,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:35,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 12:59:35,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 12:59:35,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:59:35,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:35,426 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 12:59:35,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:35,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592884335] [2025-02-06 12:59:35,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592884335] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:59:35,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:59:35,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:59:35,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150951323] [2025-02-06 12:59:35,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:59:35,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:59:35,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:59:35,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:59:35,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:59:35,432 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 82 [2025-02-06 12:59:35,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:59:35,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:59:35,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 82 [2025-02-06 12:59:35,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:59:40,778 INFO L124 PetriNetUnfolderBase]: 58899/92240 cut-off events. [2025-02-06 12:59:40,778 INFO L125 PetriNetUnfolderBase]: For 17605/17605 co-relation queries the response was YES. [2025-02-06 12:59:40,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194670 conditions, 92240 events. 58899/92240 cut-off events. For 17605/17605 co-relation queries the response was YES. Maximal size of possible extension queue 2504. Compared 771367 event pairs, 12885 based on Foata normal form. 0/90770 useless extension candidates. Maximal degree in co-relation 194656. Up to 35145 conditions per place. [2025-02-06 12:59:41,602 INFO L140 encePairwiseOnDemand]: 70/82 looper letters, 205 selfloop transitions, 19 changer transitions 0/245 dead transitions. [2025-02-06 12:59:41,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 245 transitions, 1128 flow [2025-02-06 12:59:41,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:59:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 12:59:41,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 384 transitions. [2025-02-06 12:59:41,607 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2025-02-06 12:59:41,608 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 201 flow. Second operand 8 states and 384 transitions. [2025-02-06 12:59:41,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 245 transitions, 1128 flow [2025-02-06 12:59:42,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 245 transitions, 1128 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 12:59:42,631 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 310 flow [2025-02-06 12:59:42,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=310, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2025-02-06 12:59:42,632 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 15 predicate places. [2025-02-06 12:59:42,632 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 310 flow [2025-02-06 12:59:42,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:59:42,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:42,633 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:59:42,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 12:59:42,633 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2025-02-06 12:59:42,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:42,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1379949993, now seen corresponding path program 1 times [2025-02-06 12:59:42,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:42,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819126226] [2025-02-06 12:59:42,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:59:42,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:42,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 12:59:42,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 12:59:42,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:59:42,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:42,867 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 12:59:42,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:42,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819126226] [2025-02-06 12:59:42,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819126226] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:59:42,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:59:42,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:59:42,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519378402] [2025-02-06 12:59:42,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:59:42,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:59:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:59:42,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:59:42,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:59:42,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 82 [2025-02-06 12:59:42,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:59:42,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:59:42,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 82 [2025-02-06 12:59:42,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:59:50,188 INFO L124 PetriNetUnfolderBase]: 76220/124070 cut-off events. [2025-02-06 12:59:50,188 INFO L125 PetriNetUnfolderBase]: For 51155/51155 co-relation queries the response was YES. [2025-02-06 12:59:50,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285666 conditions, 124070 events. 76220/124070 cut-off events. For 51155/51155 co-relation queries the response was YES. Maximal size of possible extension queue 3679. Compared 1140107 event pairs, 28525 based on Foata normal form. 0/122391 useless extension candidates. Maximal degree in co-relation 285646. Up to 54199 conditions per place. [2025-02-06 12:59:51,009 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 241 selfloop transitions, 17 changer transitions 0/282 dead transitions. [2025-02-06 12:59:51,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 282 transitions, 1516 flow [2025-02-06 12:59:51,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:59:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 12:59:51,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 398 transitions. [2025-02-06 12:59:51,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6067073170731707 [2025-02-06 12:59:51,011 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 310 flow. Second operand 8 states and 398 transitions. [2025-02-06 12:59:51,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 282 transitions, 1516 flow [2025-02-06 12:59:54,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 282 transitions, 1516 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 12:59:54,531 INFO L231 Difference]: Finished difference. Result has 106 places, 102 transitions, 419 flow [2025-02-06 12:59:54,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=419, PETRI_PLACES=106, PETRI_TRANSITIONS=102} [2025-02-06 12:59:54,531 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 26 predicate places. [2025-02-06 12:59:54,531 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 102 transitions, 419 flow [2025-02-06 12:59:54,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:59:54,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:54,532 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] [2025-02-06 12:59:54,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 12:59:54,532 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2025-02-06 12:59:54,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:54,532 INFO L85 PathProgramCache]: Analyzing trace with hash 562700273, now seen corresponding path program 1 times [2025-02-06 12:59:54,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:54,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981433366] [2025-02-06 12:59:54,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:59:54,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:54,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 12:59:54,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 12:59:54,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:59:54,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:54,629 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 12:59:54,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:54,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981433366] [2025-02-06 12:59:54,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981433366] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:59:54,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:59:54,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:59:54,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161844897] [2025-02-06 12:59:54,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:59:54,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:59:54,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:59:54,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:59:54,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:59:54,631 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 82 [2025-02-06 12:59:54,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 102 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 12:59:54,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:59:54,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 82 [2025-02-06 12:59:54,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:00:00,668 INFO L124 PetriNetUnfolderBase]: 56779/95217 cut-off events. [2025-02-06 13:00:00,668 INFO L125 PetriNetUnfolderBase]: For 60264/60264 co-relation queries the response was YES. [2025-02-06 13:00:00,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242017 conditions, 95217 events. 56779/95217 cut-off events. For 60264/60264 co-relation queries the response was YES. Maximal size of possible extension queue 3480. Compared 908713 event pairs, 20960 based on Foata normal form. 3727/98747 useless extension candidates. Maximal degree in co-relation 241991. Up to 51317 conditions per place. [2025-02-06 13:00:01,224 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 132 selfloop transitions, 13 changer transitions 0/171 dead transitions. [2025-02-06 13:00:01,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 171 transitions, 1028 flow [2025-02-06 13:00:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:00:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:00:01,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2025-02-06 13:00:01,226 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6626016260162602 [2025-02-06 13:00:01,226 INFO L175 Difference]: Start difference. First operand has 106 places, 102 transitions, 419 flow. Second operand 3 states and 163 transitions. [2025-02-06 13:00:01,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 171 transitions, 1028 flow [2025-02-06 13:00:04,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 171 transitions, 1028 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 13:00:04,043 INFO L231 Difference]: Finished difference. Result has 109 places, 110 transitions, 490 flow [2025-02-06 13:00:04,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=109, PETRI_TRANSITIONS=110} [2025-02-06 13:00:04,045 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 29 predicate places. [2025-02-06 13:00:04,045 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 110 transitions, 490 flow [2025-02-06 13:00:04,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 13:00:04,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:00:04,045 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] [2025-02-06 13:00:04,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 13:00:04,046 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2025-02-06 13:00:04,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:00:04,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1426481022, now seen corresponding path program 1 times [2025-02-06 13:00:04,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:00:04,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739104277] [2025-02-06 13:00:04,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:00:04,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:00:04,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 13:00:04,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 13:00:04,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:00:04,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:00:04,091 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 13:00:04,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:00:04,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739104277] [2025-02-06 13:00:04,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739104277] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:00:04,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:00:04,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 13:00:04,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071554788] [2025-02-06 13:00:04,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:00:04,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:00:04,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:00:04,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:00:04,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:00:04,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 82 [2025-02-06 13:00:04,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 110 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 13:00:04,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:00:04,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 82 [2025-02-06 13:00:04,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:00:10,817 INFO L124 PetriNetUnfolderBase]: 56779/97256 cut-off events. [2025-02-06 13:00:10,818 INFO L125 PetriNetUnfolderBase]: For 81455/82096 co-relation queries the response was YES. [2025-02-06 13:00:11,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280223 conditions, 97256 events. 56779/97256 cut-off events. For 81455/82096 co-relation queries the response was YES. Maximal size of possible extension queue 3641. Compared 950587 event pairs, 37972 based on Foata normal form. 3047/100125 useless extension candidates. Maximal degree in co-relation 280195. Up to 81884 conditions per place. [2025-02-06 13:00:11,555 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 83 selfloop transitions, 1 changer transitions 0/109 dead transitions. [2025-02-06 13:00:11,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 109 transitions, 656 flow [2025-02-06 13:00:11,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:00:11,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:00:11,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2025-02-06 13:00:11,557 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2025-02-06 13:00:11,557 INFO L175 Difference]: Start difference. First operand has 109 places, 110 transitions, 490 flow. Second operand 3 states and 118 transitions. [2025-02-06 13:00:11,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 109 transitions, 656 flow