./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.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 2b5f4c57d88bf6e97d091c1ec0f5525d1ae2da6c31cffbcaaf02c59d6e6570e5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:28:59,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:28:59,208 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:28:59,212 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:28:59,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:28:59,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:28:59,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:28:59,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:28:59,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:28:59,241 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:28:59,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:28:59,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:28:59,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:28:59,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:28:59,242 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:28:59,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:28:59,242 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:28:59,242 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:28:59,242 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:28:59,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:28:59,242 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:28:59,242 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:28:59,242 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:28:59,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:28:59,243 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:28:59,243 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:28:59,243 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:28:59,243 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:28:59,243 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:28:59,243 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:28:59,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:28:59,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:28:59,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:28:59,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:28:59,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:28:59,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:28:59,244 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:28:59,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:28:59,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:28:59,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:28:59,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:28:59,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:28:59,244 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 -> 2b5f4c57d88bf6e97d091c1ec0f5525d1ae2da6c31cffbcaaf02c59d6e6570e5 [2025-02-08 08:28:59,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:28:59,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:28:59,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:28:59,535 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:28:59,535 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:28:59,536 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i [2025-02-08 08:29:00,704 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/05ad516ee/ec780c7db24b48d69b4e8f76160d809e/FLAG8048b14e9 [2025-02-08 08:29:01,038 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:29:01,042 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i [2025-02-08 08:29:01,054 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/05ad516ee/ec780c7db24b48d69b4e8f76160d809e/FLAG8048b14e9 [2025-02-08 08:29:01,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/05ad516ee/ec780c7db24b48d69b4e8f76160d809e [2025-02-08 08:29:01,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:29:01,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:29:01,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:29:01,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:29:01,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:29:01,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,314 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb3ffdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01, skipping insertion in model container [2025-02-08 08:29:01,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,348 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:29:01,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:29:01,613 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:29:01,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:29:01,672 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:29:01,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01 WrapperNode [2025-02-08 08:29:01,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:29:01,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:29:01,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:29:01,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:29:01,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,705 INFO L138 Inliner]: procedures = 262, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 88 [2025-02-08 08:29:01,705 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:29:01,706 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:29:01,706 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:29:01,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:29:01,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,732 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [5, 5]. 50 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [5, 1]. The 2 writes are split as follows [0, 2]. [2025-02-08 08:29:01,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,738 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:29:01,742 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:29:01,742 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:29:01,742 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:29:01,743 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01" (1/1) ... [2025-02-08 08:29:01,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:29:01,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:29:01,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:29:01,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:29:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 08:29:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 08:29:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 08:29:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 08:29:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 08:29:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 08:29:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:29:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-08 08:29:01,787 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-08 08:29:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:29:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 08:29:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:29:01,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:29:01,788 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:29:01,911 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:29:01,912 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:29:02,052 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:29:02,052 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:29:02,187 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:29:02,187 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:29:02,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:29:02 BoogieIcfgContainer [2025-02-08 08:29:02,187 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:29:02,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:29:02,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:29:02,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:29:02,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:29:01" (1/3) ... [2025-02-08 08:29:02,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3142fc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:29:02, skipping insertion in model container [2025-02-08 08:29:02,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:29:01" (2/3) ... [2025-02-08 08:29:02,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3142fc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:29:02, skipping insertion in model container [2025-02-08 08:29:02,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:29:02" (3/3) ... [2025-02-08 08:29:02,197 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_12-ptr_nr.i [2025-02-08 08:29:02,206 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:29:02,207 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_12-ptr_nr.i that has 2 procedures, 30 locations, 1 initial locations, 0 loop locations, and 9 error locations. [2025-02-08 08:29:02,208 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:29:02,244 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-08 08:29:02,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 65 flow [2025-02-08 08:29:02,292 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2025-02-08 08:29:02,294 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:29:02,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 0/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 58 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-02-08 08:29:02,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 65 flow [2025-02-08 08:29:02,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 60 flow [2025-02-08 08:29:02,306 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:29:02,316 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;@4ae90d98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:29:02,317 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-02-08 08:29:02,325 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:29:02,326 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-08 08:29:02,326 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:29:02,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:29:02,326 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 08:29:02,326 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:29:02,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:29:02,332 INFO L85 PathProgramCache]: Analyzing trace with hash -990217696, now seen corresponding path program 1 times [2025-02-08 08:29:02,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:29:02,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88402106] [2025-02-08 08:29:02,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:29:02,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:29:02,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 08:29:02,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 08:29:02,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:29:02,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:29:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:29:02,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:29:02,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88402106] [2025-02-08 08:29:02,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88402106] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:29:02,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:29:02,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:29:02,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58240756] [2025-02-08 08:29:02,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:29:02,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:29:02,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:29:02,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:29:02,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:29:02,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2025-02-08 08:29:02,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:29:02,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:29:02,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2025-02-08 08:29:02,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:29:02,816 INFO L124 PetriNetUnfolderBase]: 20/79 cut-off events. [2025-02-08 08:29:02,817 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:29:02,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 79 events. 20/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 252 event pairs, 0 based on Foata normal form. 11/83 useless extension candidates. Maximal degree in co-relation 123. Up to 46 conditions per place. [2025-02-08 08:29:02,823 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 14 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2025-02-08 08:29:02,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 92 flow [2025-02-08 08:29:02,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:29:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:29:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2025-02-08 08:29:02,839 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.603448275862069 [2025-02-08 08:29:02,840 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 4 states and 70 transitions. [2025-02-08 08:29:02,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 92 flow [2025-02-08 08:29:02,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:29:02,849 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 52 flow [2025-02-08 08:29:02,850 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2025-02-08 08:29:02,858 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2025-02-08 08:29:02,858 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 52 flow [2025-02-08 08:29:02,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:29:02,858 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:29:02,858 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 08:29:02,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:29:02,859 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:29:02,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:29:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash -990781107, now seen corresponding path program 1 times [2025-02-08 08:29:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:29:02,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245603929] [2025-02-08 08:29:02,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:29:02,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:29:02,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 08:29:02,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 08:29:02,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:29:02,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:29:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:29:03,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:29:03,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245603929] [2025-02-08 08:29:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245603929] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:29:03,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:29:03,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:29:03,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264475085] [2025-02-08 08:29:03,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:29:03,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:29:03,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:29:03,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:29:03,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:29:03,059 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 29 [2025-02-08 08:29:03,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:29:03,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:29:03,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 29 [2025-02-08 08:29:03,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:29:03,103 INFO L124 PetriNetUnfolderBase]: 20/78 cut-off events. [2025-02-08 08:29:03,103 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 08:29:03,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 78 events. 20/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 243 event pairs, 20 based on Foata normal form. 5/77 useless extension candidates. Maximal degree in co-relation 83. Up to 52 conditions per place. [2025-02-08 08:29:03,108 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 11 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2025-02-08 08:29:03,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 72 flow [2025-02-08 08:29:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:29:03,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:29:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2025-02-08 08:29:03,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2025-02-08 08:29:03,109 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 52 flow. Second operand 3 states and 56 transitions. [2025-02-08 08:29:03,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 72 flow [2025-02-08 08:29:03,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 69 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:29:03,110 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 47 flow [2025-02-08 08:29:03,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2025-02-08 08:29:03,110 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -5 predicate places. [2025-02-08 08:29:03,110 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 47 flow [2025-02-08 08:29:03,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:29:03,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:29:03,110 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 08:29:03,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:29:03,110 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:29:03,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:29:03,111 INFO L85 PathProgramCache]: Analyzing trace with hash -990217695, now seen corresponding path program 1 times [2025-02-08 08:29:03,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:29:03,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325190117] [2025-02-08 08:29:03,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:29:03,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:29:03,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 08:29:03,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 08:29:03,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:29:03,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:29:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:29:03,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:29:03,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325190117] [2025-02-08 08:29:03,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325190117] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:29:03,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:29:03,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:29:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090333801] [2025-02-08 08:29:03,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:29:03,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:29:03,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:29:03,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:29:03,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:29:03,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2025-02-08 08:29:03,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:29:03,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:29:03,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2025-02-08 08:29:03,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:29:03,394 INFO L124 PetriNetUnfolderBase]: 20/67 cut-off events. [2025-02-08 08:29:03,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:29:03,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 67 events. 20/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 175 event pairs, 0 based on Foata normal form. 5/71 useless extension candidates. Maximal degree in co-relation 123. Up to 46 conditions per place. [2025-02-08 08:29:03,395 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 14 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2025-02-08 08:29:03,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 83 flow [2025-02-08 08:29:03,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:29:03,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:29:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2025-02-08 08:29:03,399 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2025-02-08 08:29:03,399 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 47 flow. Second operand 4 states and 66 transitions. [2025-02-08 08:29:03,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 83 flow [2025-02-08 08:29:03,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 82 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:29:03,400 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 46 flow [2025-02-08 08:29:03,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2025-02-08 08:29:03,401 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -5 predicate places. [2025-02-08 08:29:03,401 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 46 flow [2025-02-08 08:29:03,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:29:03,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:29:03,401 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:29:03,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:29:03,401 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:29:03,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:29:03,402 INFO L85 PathProgramCache]: Analyzing trace with hash 751989961, now seen corresponding path program 1 times [2025-02-08 08:29:03,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:29:03,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734991823] [2025-02-08 08:29:03,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:29:03,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:29:03,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:29:03,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:29:03,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:29:03,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:29:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:29:03,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:29:03,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734991823] [2025-02-08 08:29:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734991823] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:29:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:29:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:29:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307174237] [2025-02-08 08:29:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:29:03,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:29:03,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:29:03,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:29:03,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:29:03,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 29 [2025-02-08 08:29:03,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:29:03,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:29:03,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 29 [2025-02-08 08:29:03,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:29:03,559 INFO L124 PetriNetUnfolderBase]: 20/69 cut-off events. [2025-02-08 08:29:03,560 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 08:29:03,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 69 events. 20/69 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 189 event pairs, 20 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 130. Up to 52 conditions per place. [2025-02-08 08:29:03,560 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2025-02-08 08:29:03,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 18 transitions, 68 flow [2025-02-08 08:29:03,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:29:03,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:29:03,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2025-02-08 08:29:03,561 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 08:29:03,561 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 46 flow. Second operand 3 states and 58 transitions. [2025-02-08 08:29:03,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 18 transitions, 68 flow [2025-02-08 08:29:03,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 18 transitions, 65 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:29:03,562 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2025-02-08 08:29:03,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2025-02-08 08:29:03,566 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -6 predicate places. [2025-02-08 08:29:03,566 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2025-02-08 08:29:03,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:29:03,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2025-02-08 08:29:03,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2025-02-08 08:29:03,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2025-02-08 08:29:03,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2025-02-08 08:29:03,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2025-02-08 08:29:03,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2025-02-08 08:29:03,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2025-02-08 08:29:03,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2025-02-08 08:29:03,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2025-02-08 08:29:03,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2025-02-08 08:29:03,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2025-02-08 08:29:03,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2025-02-08 08:29:03,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2025-02-08 08:29:03,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2025-02-08 08:29:03,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:29:03,574 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-02-08 08:29:03,577 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:29:03,577 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:29:03,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:29:03 BasicIcfg [2025-02-08 08:29:03,585 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:29:03,585 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:29:03,585 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:29:03,585 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:29:03,586 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:29:02" (3/4) ... [2025-02-08 08:29:03,590 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 08:29:03,593 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-02-08 08:29:03,599 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2025-02-08 08:29:03,599 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2025-02-08 08:29:03,599 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-02-08 08:29:03,600 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-02-08 08:29:03,600 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-08 08:29:03,600 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 08:29:03,693 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 08:29:03,696 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 08:29:03,697 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:29:03,697 INFO L158 Benchmark]: Toolchain (without parser) took 2389.59ms. Allocated memory was 142.6MB in the beginning and 411.0MB in the end (delta: 268.4MB). Free memory was 110.8MB in the beginning and 297.9MB in the end (delta: -187.2MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. [2025-02-08 08:29:03,700 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 201.3MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:29:03,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.19ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 83.2MB in the end (delta: 27.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 08:29:03,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.76ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 81.1MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:29:03,701 INFO L158 Benchmark]: Boogie Preprocessor took 35.33ms. Allocated memory is still 142.6MB. Free memory was 81.1MB in the beginning and 79.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:29:03,701 INFO L158 Benchmark]: IcfgBuilder took 445.60ms. Allocated memory is still 142.6MB. Free memory was 79.4MB in the beginning and 105.7MB in the end (delta: -26.4MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2025-02-08 08:29:03,701 INFO L158 Benchmark]: TraceAbstraction took 1394.03ms. Allocated memory was 142.6MB in the beginning and 411.0MB in the end (delta: 268.4MB). Free memory was 105.0MB in the beginning and 303.9MB in the end (delta: -198.9MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-02-08 08:29:03,702 INFO L158 Benchmark]: Witness Printer took 111.48ms. Allocated memory is still 411.0MB. Free memory was 303.9MB in the beginning and 297.9MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:29:03,703 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 201.3MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.19ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 83.2MB in the end (delta: 27.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.76ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 81.1MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.33ms. Allocated memory is still 142.6MB. Free memory was 81.1MB in the beginning and 79.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 445.60ms. Allocated memory is still 142.6MB. Free memory was 79.4MB in the beginning and 105.7MB in the end (delta: -26.4MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1394.03ms. Allocated memory was 142.6MB in the beginning and 411.0MB in the end (delta: 268.4MB). Free memory was 105.0MB in the beginning and 303.9MB in the end (delta: -198.9MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Witness Printer took 111.48ms. Allocated memory is still 411.0MB. Free memory was 303.9MB in the beginning and 297.9MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 927]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 43 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 144 IncrementalHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 4 mSDtfsCounter, 144 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 195 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 08:29:03,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE