./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/mix007.opt.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/pthread-wmm/mix007.opt.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 98fb631b7747d0724c093b074b80cf02851c21b4b9e1af2c5f1e3d032d6b592f --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:39:03,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:39:03,644 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:39:03,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:39:03,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:39:03,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:39:03,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:39:03,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:39:03,672 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:39:03,673 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:39:03,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:39:03,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:39:03,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:39:03,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:39:03,675 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:39:03,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:39:03,675 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:39:03,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:39:03,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:39:03,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:39:03,676 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:39:03,676 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:39:03,676 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:39:03,676 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:39:03,676 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:39:03,676 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:39:03,676 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:39:03,676 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:39:03,676 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:39:03,677 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:39:03,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:39:03,677 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:39:03,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:39:03,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:39:03,677 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:39:03,677 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:39:03,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:39:03,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:39:03,678 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:39:03,678 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:39:03,678 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:39:03,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:39:03,678 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 -> 98fb631b7747d0724c093b074b80cf02851c21b4b9e1af2c5f1e3d032d6b592f [2025-02-06 12:39:03,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:39:03,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:39:03,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:39:03,919 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:39:03,919 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:39:03,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix007.opt.i [2025-02-06 12:39:05,109 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5be126c7c/f78ebfe9e6a049918f531d5228a508ab/FLAG7242f9b3b [2025-02-06 12:39:05,378 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:39:05,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix007.opt.i [2025-02-06 12:39:05,400 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5be126c7c/f78ebfe9e6a049918f531d5228a508ab/FLAG7242f9b3b [2025-02-06 12:39:05,686 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5be126c7c/f78ebfe9e6a049918f531d5228a508ab [2025-02-06 12:39:05,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:39:05,689 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:39:05,690 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:39:05,690 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:39:05,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:39:05,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:39:05" (1/1) ... [2025-02-06 12:39:05,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fcac6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:05, skipping insertion in model container [2025-02-06 12:39:05,694 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:39:05" (1/1) ... [2025-02-06 12:39:05,722 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:39:05,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:39:05,958 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:39:06,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:39:06,047 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:39:06,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06 WrapperNode [2025-02-06 12:39:06,048 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:39:06,049 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:39:06,049 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:39:06,049 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:39:06,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06" (1/1) ... [2025-02-06 12:39:06,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06" (1/1) ... [2025-02-06 12:39:06,090 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 155 [2025-02-06 12:39:06,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:39:06,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:39:06,094 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:39:06,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:39:06,100 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06" (1/1) ... [2025-02-06 12:39:06,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06" (1/1) ... [2025-02-06 12:39:06,105 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06" (1/1) ... [2025-02-06 12:39:06,120 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 12:39:06,120 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06" (1/1) ... [2025-02-06 12:39:06,120 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06" (1/1) ... [2025-02-06 12:39:06,125 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06" (1/1) ... [2025-02-06 12:39:06,126 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06" (1/1) ... [2025-02-06 12:39:06,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06" (1/1) ... [2025-02-06 12:39:06,128 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06" (1/1) ... [2025-02-06 12:39:06,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:39:06,131 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:39:06,131 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:39:06,131 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:39:06,138 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06" (1/1) ... [2025-02-06 12:39:06,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:39:06,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:39:06,165 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 12:39:06,168 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 12:39:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 12:39:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:39:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-06 12:39:06,186 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-06 12:39:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-06 12:39:06,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-06 12:39:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-06 12:39:06,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-06 12:39:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-06 12:39:06,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-06 12:39:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:39:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 12:39:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:39:06,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:39:06,189 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 12:39:06,283 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:39:06,285 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:39:06,582 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:39:06,582 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:39:06,762 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:39:06,762 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:39:06,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:39:06 BoogieIcfgContainer [2025-02-06 12:39:06,763 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:39:06,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:39:06,766 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:39:06,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:39:06,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:39:05" (1/3) ... [2025-02-06 12:39:06,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51695501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:39:06, skipping insertion in model container [2025-02-06 12:39:06,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:39:06" (2/3) ... [2025-02-06 12:39:06,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51695501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:39:06, skipping insertion in model container [2025-02-06 12:39:06,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:39:06" (3/3) ... [2025-02-06 12:39:06,772 INFO L128 eAbstractionObserver]: Analyzing ICFG mix007.opt.i [2025-02-06 12:39:06,787 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:39:06,788 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix007.opt.i that has 5 procedures, 54 locations, 1 initial locations, 0 loop locations, and 3 error locations. [2025-02-06 12:39:06,789 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:39:06,829 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 12:39:06,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 55 transitions, 126 flow [2025-02-06 12:39:06,883 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2025-02-06 12:39:06,885 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:39:06,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 51 events. 2/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2025-02-06 12:39:06,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 55 transitions, 126 flow [2025-02-06 12:39:06,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 51 transitions, 114 flow [2025-02-06 12:39:06,897 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:39:06,904 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;@2fbc852a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:39:06,904 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-02-06 12:39:06,910 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:39:06,910 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2025-02-06 12:39:06,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:39:06,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:39:06,911 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:39:06,911 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-06 12:39:06,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:39:06,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1067426729, now seen corresponding path program 1 times [2025-02-06 12:39:06,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:39:06,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462550930] [2025-02-06 12:39:06,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:39:06,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:39:06,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 12:39:07,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 12:39:07,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:39:07,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:39:07,311 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 12:39:07,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:39:07,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462550930] [2025-02-06 12:39:07,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462550930] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:39:07,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:39:07,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:39:07,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567164241] [2025-02-06 12:39:07,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:39:07,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:39:07,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:39:07,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:39:07,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:39:07,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2025-02-06 12:39:07,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 12:39:07,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:39:07,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2025-02-06 12:39:07,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:39:11,831 INFO L124 PetriNetUnfolderBase]: 59279/78563 cut-off events. [2025-02-06 12:39:11,832 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2025-02-06 12:39:11,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156667 conditions, 78563 events. 59279/78563 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 2193. Compared 466252 event pairs, 7511 based on Foata normal form. 3528/82020 useless extension candidates. Maximal degree in co-relation 156655. Up to 66889 conditions per place. [2025-02-06 12:39:12,302 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 60 selfloop transitions, 2 changer transitions 2/72 dead transitions. [2025-02-06 12:39:12,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 72 transitions, 284 flow [2025-02-06 12:39:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:39:12,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:39:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2025-02-06 12:39:12,310 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2025-02-06 12:39:12,311 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 105 transitions. [2025-02-06 12:39:12,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 72 transitions, 284 flow [2025-02-06 12:39:12,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 280 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 12:39:12,320 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 104 flow [2025-02-06 12:39:12,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2025-02-06 12:39:12,323 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2025-02-06 12:39:12,324 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 104 flow [2025-02-06 12:39:12,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 12:39:12,324 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:39:12,324 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:39:12,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 12:39:12,324 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-06 12:39:12,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:39:12,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1795054979, now seen corresponding path program 1 times [2025-02-06 12:39:12,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:39:12,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568143658] [2025-02-06 12:39:12,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:39:12,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:39:12,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 12:39:12,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 12:39:12,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:39:12,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:39:12,400 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 12:39:12,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:39:12,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568143658] [2025-02-06 12:39:12,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568143658] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:39:12,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:39:12,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:39:12,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682144229] [2025-02-06 12:39:12,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:39:12,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:39:12,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:39:12,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:39:12,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:39:12,404 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-02-06 12:39:12,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 12:39:12,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:39:12,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-02-06 12:39:12,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:39:16,379 INFO L124 PetriNetUnfolderBase]: 53315/74111 cut-off events. [2025-02-06 12:39:16,379 INFO L125 PetriNetUnfolderBase]: For 2268/2268 co-relation queries the response was YES. [2025-02-06 12:39:16,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146753 conditions, 74111 events. 53315/74111 cut-off events. For 2268/2268 co-relation queries the response was YES. Maximal size of possible extension queue 2206. Compared 484051 event pairs, 53315 based on Foata normal form. 1764/75552 useless extension candidates. Maximal degree in co-relation 146743. Up to 69780 conditions per place. [2025-02-06 12:39:16,674 INFO L140 encePairwiseOnDemand]: 53/55 looper letters, 36 selfloop transitions, 1 changer transitions 1/45 dead transitions. [2025-02-06 12:39:16,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 178 flow [2025-02-06 12:39:16,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:39:16,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:39:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2025-02-06 12:39:16,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2025-02-06 12:39:16,676 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 72 transitions. [2025-02-06 12:39:16,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 178 flow [2025-02-06 12:39:16,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 45 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 12:39:16,693 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 98 flow [2025-02-06 12:39:16,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2025-02-06 12:39:16,693 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2025-02-06 12:39:16,694 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 98 flow [2025-02-06 12:39:16,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 12:39:16,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:39:16,694 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:39:16,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 12:39:16,694 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-06 12:39:16,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:39:16,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1795055582, now seen corresponding path program 1 times [2025-02-06 12:39:16,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:39:16,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190034896] [2025-02-06 12:39:16,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:39:16,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:39:16,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 12:39:16,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 12:39:16,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:39:16,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:39:16,936 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 12:39:16,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:39:16,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190034896] [2025-02-06 12:39:16,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190034896] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:39:16,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:39:16,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:39:16,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113173494] [2025-02-06 12:39:16,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:39:16,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:39:16,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:39:16,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:39:16,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:39:16,940 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-02-06 12:39:16,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 12:39:16,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:39:16,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-02-06 12:39:16,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:39:25,702 INFO L124 PetriNetUnfolderBase]: 113419/152889 cut-off events. [2025-02-06 12:39:25,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:39:25,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303187 conditions, 152889 events. 113419/152889 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4410. Compared 1024856 event pairs, 29217 based on Foata normal form. 0/149899 useless extension candidates. Maximal degree in co-relation 303181. Up to 67069 conditions per place. [2025-02-06 12:39:26,332 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 63 selfloop transitions, 8 changer transitions 137/214 dead transitions. [2025-02-06 12:39:26,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 214 transitions, 860 flow [2025-02-06 12:39:26,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 12:39:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 12:39:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 309 transitions. [2025-02-06 12:39:26,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6242424242424243 [2025-02-06 12:39:26,334 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 98 flow. Second operand 9 states and 309 transitions. [2025-02-06 12:39:26,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 214 transitions, 860 flow [2025-02-06 12:39:26,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 214 transitions, 859 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:39:26,339 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 207 flow [2025-02-06 12:39:26,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=207, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2025-02-06 12:39:26,340 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2025-02-06 12:39:26,340 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 207 flow [2025-02-06 12:39:26,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 12:39:26,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:39:26,340 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:39:26,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 12:39:26,340 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-06 12:39:26,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:39:26,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1897406213, now seen corresponding path program 1 times [2025-02-06 12:39:26,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:39:26,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303127186] [2025-02-06 12:39:26,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:39:26,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:39:26,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 12:39:26,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 12:39:26,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:39:26,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:39:26,515 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 12:39:26,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:39:26,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303127186] [2025-02-06 12:39:26,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303127186] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:39:26,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:39:26,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:39:26,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668391883] [2025-02-06 12:39:26,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:39:26,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:39:26,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:39:26,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:39:26,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:39:26,519 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-02-06 12:39:26,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 12:39:26,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:39:26,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-02-06 12:39:26,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:39:33,776 INFO L124 PetriNetUnfolderBase]: 84443/116147 cut-off events. [2025-02-06 12:39:33,777 INFO L125 PetriNetUnfolderBase]: For 127259/127259 co-relation queries the response was YES. [2025-02-06 12:39:34,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323470 conditions, 116147 events. 84443/116147 cut-off events. For 127259/127259 co-relation queries the response was YES. Maximal size of possible extension queue 3186. Compared 771984 event pairs, 21911 based on Foata normal form. 2800/118888 useless extension candidates. Maximal degree in co-relation 323455. Up to 71201 conditions per place. [2025-02-06 12:39:34,381 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 65 selfloop transitions, 3 changer transitions 99/173 dead transitions. [2025-02-06 12:39:34,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 173 transitions, 1105 flow [2025-02-06 12:39:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 12:39:34,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 12:39:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2025-02-06 12:39:34,382 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2025-02-06 12:39:34,382 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 207 flow. Second operand 7 states and 215 transitions. [2025-02-06 12:39:34,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 173 transitions, 1105 flow [2025-02-06 12:39:35,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 173 transitions, 961 flow, removed 35 selfloop flow, removed 4 redundant places. [2025-02-06 12:39:35,572 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 192 flow [2025-02-06 12:39:35,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=192, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2025-02-06 12:39:35,573 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2025-02-06 12:39:35,573 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 192 flow [2025-02-06 12:39:35,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 12:39:35,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:39:35,574 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 12:39:35,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 12:39:35,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-06 12:39:35,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:39:35,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1714478048, now seen corresponding path program 1 times [2025-02-06 12:39:35,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:39:35,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078780102] [2025-02-06 12:39:35,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:39:35,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:39:35,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 12:39:35,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 12:39:35,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:39:35,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:39:35,920 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 12:39:35,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:39:35,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078780102] [2025-02-06 12:39:35,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078780102] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:39:35,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:39:35,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 12:39:35,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554631125] [2025-02-06 12:39:35,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:39:35,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 12:39:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:39:35,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 12:39:35,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:39:35,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2025-02-06 12:39:35,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 12:39:35,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:39:35,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2025-02-06 12:39:35,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand