./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:36:20,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:36:20,251 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:36:20,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:36:20,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:36:20,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:36:20,281 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:36:20,281 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:36:20,282 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:36:20,283 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:36:20,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:36:20,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:36:20,284 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:36:20,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:36:20,286 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:36:20,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:36:20,286 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:36:20,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:36:20,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:36:20,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:36:20,287 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:36:20,288 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:36:20,290 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:36:20,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:36:20,291 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:36:20,291 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:36:20,291 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:36:20,291 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:36:20,291 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:36:20,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:36:20,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:36:20,292 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:36:20,292 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:36:20,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:36:20,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:36:20,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:36:20,293 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:36:20,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:36:20,293 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:36:20,293 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:36:20,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:36:20,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:36:20,294 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 [2024-10-14 19:36:20,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:36:20,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:36:20,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:36:20,499 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:36:20,499 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:36:20,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2024-10-14 19:36:21,714 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:36:21,941 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:36:21,941 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2024-10-14 19:36:21,958 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6dcd091/fd9e57a449214f9f902ff5b7e9e9b443/FLAG8a89cbc54 [2024-10-14 19:36:22,273 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6dcd091/fd9e57a449214f9f902ff5b7e9e9b443 [2024-10-14 19:36:22,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:36:22,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:36:22,282 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:36:22,282 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:36:22,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:36:22,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611643ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22, skipping insertion in model container [2024-10-14 19:36:22,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,333 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:36:22,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:36:22,703 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:36:22,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:36:22,796 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:36:22,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22 WrapperNode [2024-10-14 19:36:22,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:36:22,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:36:22,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:36:22,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:36:22,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,835 INFO L138 Inliner]: procedures = 176, calls = 76, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2024-10-14 19:36:22,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:36:22,836 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:36:22,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:36:22,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:36:22,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,872 INFO L175 MemorySlicer]: Split 30 memory accesses to 2 slices as follows [2, 28]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-10-14 19:36:22,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,886 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:36:22,897 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:36:22,897 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:36:22,897 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:36:22,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22" (1/1) ... [2024-10-14 19:36:22,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:36:22,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:36:22,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:36:22,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:36:22,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 19:36:22,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 19:36:22,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 19:36:22,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 19:36:22,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:36:22,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:36:22,980 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-14 19:36:22,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-14 19:36:22,980 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-14 19:36:22,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-14 19:36:22,980 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-14 19:36:22,981 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-14 19:36:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-14 19:36:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-14 19:36:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:36:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 19:36:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:36:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:36:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:36:22,984 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:36:23,104 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:36:23,105 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:36:23,552 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:36:23,552 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:36:24,103 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:36:24,104 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 19:36:24,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:36:24 BoogieIcfgContainer [2024-10-14 19:36:24,104 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:36:24,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:36:24,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:36:24,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:36:24,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:36:22" (1/3) ... [2024-10-14 19:36:24,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c717265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:36:24, skipping insertion in model container [2024-10-14 19:36:24,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:36:22" (2/3) ... [2024-10-14 19:36:24,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c717265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:36:24, skipping insertion in model container [2024-10-14 19:36:24,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:36:24" (3/3) ... [2024-10-14 19:36:24,112 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_power.opt.i [2024-10-14 19:36:24,128 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:36:24,129 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2024-10-14 19:36:24,129 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:36:24,284 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:36:24,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 104 transitions, 224 flow [2024-10-14 19:36:24,356 INFO L124 PetriNetUnfolderBase]: 2/100 cut-off events. [2024-10-14 19:36:24,356 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:36:24,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 100 events. 2/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 403 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2024-10-14 19:36:24,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 104 transitions, 224 flow [2024-10-14 19:36:24,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 100 transitions, 212 flow [2024-10-14 19:36:24,378 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:36:24,384 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;@1289ef72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:36:24,384 INFO L334 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2024-10-14 19:36:24,388 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:36:24,388 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-10-14 19:36:24,388 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:36:24,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:36:24,389 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 19:36:24,389 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-10-14 19:36:24,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:36:24,393 INFO L85 PathProgramCache]: Analyzing trace with hash 977855809, now seen corresponding path program 1 times [2024-10-14 19:36:24,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:36:24,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988611680] [2024-10-14 19:36:24,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:36:24,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:36:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:36:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:36:24,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:36:24,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988611680] [2024-10-14 19:36:24,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988611680] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:36:24,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:36:24,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:36:24,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238797490] [2024-10-14 19:36:24,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:36:24,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:36:24,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:36:24,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:36:24,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:36:24,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 104 [2024-10-14 19:36:24,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 100 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:36:24,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:36:24,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 104 [2024-10-14 19:36:24,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:36:40,710 INFO L124 PetriNetUnfolderBase]: 81178/115730 cut-off events. [2024-10-14 19:36:40,710 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-14 19:36:40,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222523 conditions, 115730 events. 81178/115730 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 7138. Compared 955126 event pairs, 81178 based on Foata normal form. 3430/68295 useless extension candidates. Maximal degree in co-relation 222511. Up to 105987 conditions per place. [2024-10-14 19:36:41,569 INFO L140 encePairwiseOnDemand]: 63/104 looper letters, 42 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-10-14 19:36:41,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 59 transitions, 216 flow [2024-10-14 19:36:41,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:36:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:36:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-10-14 19:36:41,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-10-14 19:36:41,580 INFO L175 Difference]: Start difference. First operand has 111 places, 100 transitions, 212 flow. Second operand 3 states and 143 transitions. [2024-10-14 19:36:41,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 59 transitions, 216 flow [2024-10-14 19:36:41,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 59 transitions, 212 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:36:41,615 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 128 flow [2024-10-14 19:36:41,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-10-14 19:36:41,620 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -41 predicate places. [2024-10-14 19:36:41,621 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 128 flow [2024-10-14 19:36:41,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:36:41,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:36:41,621 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 19:36:41,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:36:41,622 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-10-14 19:36:41,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:36:41,623 INFO L85 PathProgramCache]: Analyzing trace with hash 977855810, now seen corresponding path program 1 times [2024-10-14 19:36:41,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:36:41,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655757134] [2024-10-14 19:36:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:36:41,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:36:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:36:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:36:41,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:36:41,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655757134] [2024-10-14 19:36:41,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655757134] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:36:41,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:36:41,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:36:41,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284571053] [2024-10-14 19:36:41,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:36:41,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:36:41,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:36:41,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:36:41,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:36:41,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 104 [2024-10-14 19:36:41,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:36:41,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:36:41,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 104 [2024-10-14 19:36:41,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:36:43,417 INFO L124 PetriNetUnfolderBase]: 6311/9802 cut-off events. [2024-10-14 19:36:43,418 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:36:43,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18568 conditions, 9802 events. 6311/9802 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 67188 event pairs, 6311 based on Foata normal form. 0/9243 useless extension candidates. Maximal degree in co-relation 18562. Up to 8592 conditions per place. [2024-10-14 19:36:43,455 INFO L140 encePairwiseOnDemand]: 89/104 looper letters, 27 selfloop transitions, 1 changer transitions 1/45 dead transitions. [2024-10-14 19:36:43,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 158 flow [2024-10-14 19:36:43,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:36:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:36:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-10-14 19:36:43,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3301282051282051 [2024-10-14 19:36:43,457 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 128 flow. Second operand 3 states and 103 transitions. [2024-10-14 19:36:43,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 158 flow [2024-10-14 19:36:43,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 45 transitions, 157 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:36:43,459 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 99 flow [2024-10-14 19:36:43,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=99, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-10-14 19:36:43,459 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -54 predicate places. [2024-10-14 19:36:43,460 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 99 flow [2024-10-14 19:36:43,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:36:43,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:36:43,460 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:36:43,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:36:43,460 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-10-14 19:36:43,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:36:43,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1238085401, now seen corresponding path program 1 times [2024-10-14 19:36:43,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:36:43,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663917880] [2024-10-14 19:36:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:36:43,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:36:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:36:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:36:43,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:36:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663917880] [2024-10-14 19:36:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663917880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:36:43,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:36:43,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:36:43,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009019963] [2024-10-14 19:36:43,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:36:43,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:36:43,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:36:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:36:43,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:36:43,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 104 [2024-10-14 19:36:43,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-10-14 19:36:43,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:36:43,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 104 [2024-10-14 19:36:43,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:36:44,734 INFO L124 PetriNetUnfolderBase]: 5447/8462 cut-off events. [2024-10-14 19:36:44,734 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:36:44,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16077 conditions, 8462 events. 5447/8462 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 55983 event pairs, 1783 based on Foata normal form. 0/8131 useless extension candidates. Maximal degree in co-relation 16070. Up to 6097 conditions per place. [2024-10-14 19:36:44,768 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 43 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-10-14 19:36:44,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 225 flow [2024-10-14 19:36:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:36:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:36:44,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-10-14 19:36:44,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34294871794871795 [2024-10-14 19:36:44,773 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 99 flow. Second operand 3 states and 107 transitions. [2024-10-14 19:36:44,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 225 flow [2024-10-14 19:36:44,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:36:44,775 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 108 flow [2024-10-14 19:36:44,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-10-14 19:36:44,776 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -53 predicate places. [2024-10-14 19:36:44,776 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 108 flow [2024-10-14 19:36:44,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-10-14 19:36:44,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:36:44,776 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:36:44,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:36:44,777 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-10-14 19:36:44,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:36:44,777 INFO L85 PathProgramCache]: Analyzing trace with hash -94034154, now seen corresponding path program 1 times [2024-10-14 19:36:44,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:36:44,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741742653] [2024-10-14 19:36:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:36:44,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:36:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:36:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:36:45,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:36:45,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741742653] [2024-10-14 19:36:45,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741742653] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:36:45,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:36:45,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:36:45,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434168721] [2024-10-14 19:36:45,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:36:45,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:36:45,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:36:45,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:36:45,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:36:45,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 104 [2024-10-14 19:36:45,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-10-14 19:36:45,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:36:45,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 104 [2024-10-14 19:36:45,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:36:46,248 INFO L124 PetriNetUnfolderBase]: 5039/7910 cut-off events. [2024-10-14 19:36:46,249 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2024-10-14 19:36:46,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15951 conditions, 7910 events. 5039/7910 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 52141 event pairs, 1591 based on Foata normal form. 0/7867 useless extension candidates. Maximal degree in co-relation 15942. Up to 5544 conditions per place. [2024-10-14 19:36:46,287 INFO L140 encePairwiseOnDemand]: 101/104 looper letters, 42 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-14 19:36:46,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 228 flow [2024-10-14 19:36:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:36:46,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:36:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-10-14 19:36:46,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3004807692307692 [2024-10-14 19:36:46,290 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 108 flow. Second operand 4 states and 125 transitions. [2024-10-14 19:36:46,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 228 flow [2024-10-14 19:36:46,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:36:46,292 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 104 flow [2024-10-14 19:36:46,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-10-14 19:36:46,293 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -53 predicate places. [2024-10-14 19:36:46,294 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 104 flow [2024-10-14 19:36:46,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-10-14 19:36:46,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:36:46,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:36:46,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 19:36:46,295 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-10-14 19:36:46,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:36:46,296 INFO L85 PathProgramCache]: Analyzing trace with hash -94034155, now seen corresponding path program 1 times [2024-10-14 19:36:46,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:36:46,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991203882] [2024-10-14 19:36:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:36:46,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:36:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:36:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:36:46,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:36:46,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991203882] [2024-10-14 19:36:46,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991203882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:36:46,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:36:46,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:36:46,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823824401] [2024-10-14 19:36:46,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:36:46,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:36:46,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:36:46,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:36:46,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:36:46,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 104 [2024-10-14 19:36:46,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-10-14 19:36:46,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:36:46,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 104 [2024-10-14 19:36:46,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:36:47,426 INFO L124 PetriNetUnfolderBase]: 4631/7358 cut-off events. [2024-10-14 19:36:47,426 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2024-10-14 19:36:47,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14703 conditions, 7358 events. 4631/7358 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 48646 event pairs, 1399 based on Foata normal form. 144/7459 useless extension candidates. Maximal degree in co-relation 14694. Up to 4992 conditions per place. [2024-10-14 19:36:47,471 INFO L140 encePairwiseOnDemand]: 101/104 looper letters, 41 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-10-14 19:36:47,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 222 flow [2024-10-14 19:36:47,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:36:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:36:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-10-14 19:36:47,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2980769230769231 [2024-10-14 19:36:47,474 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 104 flow. Second operand 4 states and 124 transitions. [2024-10-14 19:36:47,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 222 flow [2024-10-14 19:36:47,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 217 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:36:47,477 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 99 flow [2024-10-14 19:36:47,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2024-10-14 19:36:47,480 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -54 predicate places. [2024-10-14 19:36:47,480 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 99 flow [2024-10-14 19:36:47,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-10-14 19:36:47,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:36:47,483 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:36:47,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 19:36:47,483 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-10-14 19:36:47,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:36:47,484 INFO L85 PathProgramCache]: Analyzing trace with hash -227323458, now seen corresponding path program 1 times [2024-10-14 19:36:47,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:36:47,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016196074] [2024-10-14 19:36:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:36:47,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:36:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:36:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:36:47,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:36:47,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016196074] [2024-10-14 19:36:47,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016196074] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:36:47,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:36:47,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:36:47,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034340481] [2024-10-14 19:36:47,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:36:47,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:36:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:36:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:36:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:36:47,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 104 [2024-10-14 19:36:47,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-10-14 19:36:47,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:36:47,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 104 [2024-10-14 19:36:47,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:36:49,071 INFO L124 PetriNetUnfolderBase]: 4631/7354 cut-off events. [2024-10-14 19:36:49,072 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2024-10-14 19:36:49,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14698 conditions, 7354 events. 4631/7354 cut-off events. For 416/416 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 49631 event pairs, 4631 based on Foata normal form. 192/7371 useless extension candidates. Maximal degree in co-relation 14690. Up to 6336 conditions per place. [2024-10-14 19:36:49,110 INFO L140 encePairwiseOnDemand]: 102/104 looper letters, 24 selfloop transitions, 1 changer transitions 1/41 dead transitions. [2024-10-14 19:36:49,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 41 transitions, 149 flow [2024-10-14 19:36:49,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:36:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:36:49,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-10-14 19:36:49,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2692307692307692 [2024-10-14 19:36:49,112 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 99 flow. Second operand 3 states and 84 transitions. [2024-10-14 19:36:49,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 41 transitions, 149 flow [2024-10-14 19:36:49,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:36:49,114 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 94 flow [2024-10-14 19:36:49,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-10-14 19:36:49,114 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -55 predicate places. [2024-10-14 19:36:49,114 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 94 flow [2024-10-14 19:36:49,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-10-14 19:36:49,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:36:49,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:36:49,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 19:36:49,115 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-10-14 19:36:49,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:36:49,116 INFO L85 PathProgramCache]: Analyzing trace with hash -227322177, now seen corresponding path program 1 times [2024-10-14 19:36:49,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:36:49,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766861089] [2024-10-14 19:36:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:36:49,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:36:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:36:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:36:49,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:36:49,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766861089] [2024-10-14 19:36:49,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766861089] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:36:49,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:36:49,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:36:49,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339765757] [2024-10-14 19:36:49,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:36:49,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:36:49,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:36:49,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:36:49,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:36:49,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 104 [2024-10-14 19:36:49,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-14 19:36:49,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:36:49,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 104 [2024-10-14 19:36:49,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand