./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-atomic/read_write_lock-1-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d 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-atomic/read_write_lock-1-pthread.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 04a1d4ff1109dce80fd92bb8b947109ce8379b8f1a452f4ba67af1891a651644 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:09:22,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:09:22,613 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:09:22,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:09:22,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:09:22,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:09:22,666 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:09:22,666 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:09:22,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:09:22,668 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:09:22,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:09:22,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:09:22,669 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:09:22,671 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:09:22,672 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:09:22,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:09:22,673 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:09:22,673 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:09:22,673 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:09:22,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:09:22,674 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:09:22,676 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:09:22,676 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:09:22,676 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:09:22,677 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:09:22,677 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:09:22,677 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:09:22,678 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:09:22,678 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:09:22,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:09:22,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:09:22,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:09:22,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:09:22,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:09:22,680 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:09:22,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:09:22,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:09:22,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:09:22,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:09:22,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:09:22,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:09:22,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:09:22,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04a1d4ff1109dce80fd92bb8b947109ce8379b8f1a452f4ba67af1891a651644 [2024-10-13 12:09:22,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:09:22,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:09:22,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:09:22,999 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:09:23,000 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:09:23,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/read_write_lock-1-pthread.i [2024-10-13 12:09:24,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:09:24,902 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:09:24,903 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/read_write_lock-1-pthread.i [2024-10-13 12:09:24,918 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8089487ff/0c697cf1c9724bc698e2e1ec3927079e/FLAG01a95db26 [2024-10-13 12:09:24,931 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8089487ff/0c697cf1c9724bc698e2e1ec3927079e [2024-10-13 12:09:24,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:09:24,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:09:24,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:09:24,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:09:24,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:09:24,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:09:24" (1/1) ... [2024-10-13 12:09:24,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6776d3a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:24, skipping insertion in model container [2024-10-13 12:09:24,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:09:24" (1/1) ... [2024-10-13 12:09:25,006 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:09:25,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:09:25,381 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:09:25,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:09:25,495 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:09:25,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25 WrapperNode [2024-10-13 12:09:25,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:09:25,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:09:25,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:09:25,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:09:25,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25" (1/1) ... [2024-10-13 12:09:25,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25" (1/1) ... [2024-10-13 12:09:25,569 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2024-10-13 12:09:25,570 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:09:25,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:09:25,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:09:25,572 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:09:25,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25" (1/1) ... [2024-10-13 12:09:25,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25" (1/1) ... [2024-10-13 12:09:25,603 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25" (1/1) ... [2024-10-13 12:09:25,638 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 11]. The 0 writes are split as follows [0, 0]. [2024-10-13 12:09:25,639 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25" (1/1) ... [2024-10-13 12:09:25,639 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25" (1/1) ... [2024-10-13 12:09:25,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25" (1/1) ... [2024-10-13 12:09:25,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25" (1/1) ... [2024-10-13 12:09:25,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25" (1/1) ... [2024-10-13 12:09:25,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25" (1/1) ... [2024-10-13 12:09:25,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:09:25,665 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:09:25,665 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:09:25,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:09:25,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25" (1/1) ... [2024-10-13 12:09:25,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:09:25,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:09:25,708 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) [2024-10-13 12:09:25,714 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 [2024-10-13 12:09:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2024-10-13 12:09:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2024-10-13 12:09:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:09:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:09:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-10-13 12:09:25,771 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-10-13 12:09:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2024-10-13 12:09:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:09:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 12:09:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:09:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:09:25,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:09:25,774 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-10-13 12:09:25,774 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-10-13 12:09:25,776 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:09:25,907 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:09:25,909 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:09:26,081 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:09:26,081 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:09:26,240 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:09:26,241 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 12:09:26,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:09:26 BoogieIcfgContainer [2024-10-13 12:09:26,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:09:26,244 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:09:26,244 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:09:26,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:09:26,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:09:24" (1/3) ... [2024-10-13 12:09:26,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c98bd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:09:26, skipping insertion in model container [2024-10-13 12:09:26,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:25" (2/3) ... [2024-10-13 12:09:26,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c98bd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:09:26, skipping insertion in model container [2024-10-13 12:09:26,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:09:26" (3/3) ... [2024-10-13 12:09:26,253 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1-pthread.i [2024-10-13 12:09:26,269 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:09:26,269 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:09:26,269 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:09:26,342 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 12:09:26,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-10-13 12:09:26,410 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-10-13 12:09:26,411 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 12:09:26,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-10-13 12:09:26,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-10-13 12:09:26,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 138 flow [2024-10-13 12:09:26,435 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:09:26,443 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;@7198144b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:09:26,444 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-13 12:09:26,461 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:09:26,462 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2024-10-13 12:09:26,462 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 12:09:26,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:26,463 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:09:26,464 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-13 12:09:26,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1119940078, now seen corresponding path program 1 times [2024-10-13 12:09:26,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:26,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122401573] [2024-10-13 12:09:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:26,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:09:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:09:26,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:09:26,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122401573] [2024-10-13 12:09:26,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122401573] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:09:26,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:09:26,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:09:26,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856009765] [2024-10-13 12:09:26,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:09:26,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:09:26,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:09:26,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:09:26,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:09:26,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 62 [2024-10-13 12:09:26,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2024-10-13 12:09:26,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:09:26,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 62 [2024-10-13 12:09:26,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:09:31,719 INFO L124 PetriNetUnfolderBase]: 28659/43084 cut-off events. [2024-10-13 12:09:31,719 INFO L125 PetriNetUnfolderBase]: For 3298/3298 co-relation queries the response was YES. [2024-10-13 12:09:32,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84464 conditions, 43084 events. 28659/43084 cut-off events. For 3298/3298 co-relation queries the response was YES. Maximal size of possible extension queue 1929. Compared 320300 event pairs, 3516 based on Foata normal form. 4452/46490 useless extension candidates. Maximal degree in co-relation 76081. Up to 12152 conditions per place. [2024-10-13 12:09:32,286 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 191 selfloop transitions, 29 changer transitions 0/234 dead transitions. [2024-10-13 12:09:32,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 234 transitions, 1022 flow [2024-10-13 12:09:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:09:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:09:32,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 465 transitions. [2024-10-13 12:09:32,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-10-13 12:09:32,305 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 138 flow. Second operand 11 states and 465 transitions. [2024-10-13 12:09:32,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 234 transitions, 1022 flow [2024-10-13 12:09:32,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 234 transitions, 946 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-13 12:09:32,378 INFO L231 Difference]: Finished difference. Result has 74 places, 82 transitions, 312 flow [2024-10-13 12:09:32,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=312, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2024-10-13 12:09:32,385 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2024-10-13 12:09:32,386 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 312 flow [2024-10-13 12:09:32,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2024-10-13 12:09:32,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:32,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:09:32,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:09:32,388 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-13 12:09:32,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2145924498, now seen corresponding path program 1 times [2024-10-13 12:09:32,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:32,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755664188] [2024-10-13 12:09:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:32,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:09:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:09:32,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:09:32,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755664188] [2024-10-13 12:09:32,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755664188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:09:32,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:09:32,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:09:32,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058398637] [2024-10-13 12:09:32,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:09:32,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:09:32,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:09:32,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:09:32,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:09:32,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 62 [2024-10-13 12:09:32,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-10-13 12:09:32,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:09:32,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 62 [2024-10-13 12:09:32,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:09:32,939 INFO L124 PetriNetUnfolderBase]: 1135/2749 cut-off events. [2024-10-13 12:09:32,939 INFO L125 PetriNetUnfolderBase]: For 1503/1957 co-relation queries the response was YES. [2024-10-13 12:09:32,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6223 conditions, 2749 events. 1135/2749 cut-off events. For 1503/1957 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 21928 event pairs, 175 based on Foata normal form. 1275/3964 useless extension candidates. Maximal degree in co-relation 4844. Up to 1524 conditions per place. [2024-10-13 12:09:32,971 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 48 selfloop transitions, 2 changer transitions 2/83 dead transitions. [2024-10-13 12:09:32,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 83 transitions, 419 flow [2024-10-13 12:09:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:09:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:09:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-10-13 12:09:32,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2024-10-13 12:09:32,976 INFO L175 Difference]: Start difference. First operand has 74 places, 82 transitions, 312 flow. Second operand 3 states and 122 transitions. [2024-10-13 12:09:32,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 83 transitions, 419 flow [2024-10-13 12:09:32,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 419 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:09:32,997 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 294 flow [2024-10-13 12:09:32,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2024-10-13 12:09:32,999 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 1 predicate places. [2024-10-13 12:09:33,000 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 294 flow [2024-10-13 12:09:33,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-10-13 12:09:33,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:33,001 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:09:33,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:09:33,001 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-13 12:09:33,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:33,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2020908400, now seen corresponding path program 2 times [2024-10-13 12:09:33,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:33,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134151204] [2024-10-13 12:09:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:33,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:09:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:09:33,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:09:33,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134151204] [2024-10-13 12:09:33,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134151204] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:09:33,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:09:33,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:09:33,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272635553] [2024-10-13 12:09:33,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:09:33,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:09:33,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:09:33,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:09:33,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:09:33,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 62 [2024-10-13 12:09:33,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-10-13 12:09:33,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:09:33,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 62 [2024-10-13 12:09:33,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:09:33,200 INFO L124 PetriNetUnfolderBase]: 131/411 cut-off events. [2024-10-13 12:09:33,201 INFO L125 PetriNetUnfolderBase]: For 374/382 co-relation queries the response was YES. [2024-10-13 12:09:33,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 411 events. 131/411 cut-off events. For 374/382 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2125 event pairs, 11 based on Foata normal form. 94/503 useless extension candidates. Maximal degree in co-relation 847. Up to 210 conditions per place. [2024-10-13 12:09:33,206 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 22 selfloop transitions, 2 changer transitions 6/57 dead transitions. [2024-10-13 12:09:33,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 263 flow [2024-10-13 12:09:33,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:09:33,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:09:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-10-13 12:09:33,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-10-13 12:09:33,208 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 294 flow. Second operand 3 states and 112 transitions. [2024-10-13 12:09:33,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 263 flow [2024-10-13 12:09:33,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 252 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-13 12:09:33,213 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 165 flow [2024-10-13 12:09:33,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2024-10-13 12:09:33,215 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -4 predicate places. [2024-10-13 12:09:33,215 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 165 flow [2024-10-13 12:09:33,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-10-13 12:09:33,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:33,216 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:09:33,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:09:33,216 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-13 12:09:33,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:33,218 INFO L85 PathProgramCache]: Analyzing trace with hash -15337866, now seen corresponding path program 1 times [2024-10-13 12:09:33,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:33,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607446870] [2024-10-13 12:09:33,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:33,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:09:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:09:33,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:09:33,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607446870] [2024-10-13 12:09:33,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607446870] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:09:33,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:09:33,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:09:33,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419393534] [2024-10-13 12:09:33,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:09:33,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:09:33,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:09:33,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:09:33,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:09:33,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 62 [2024-10-13 12:09:33,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2024-10-13 12:09:33,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:09:33,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 62 [2024-10-13 12:09:33,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:09:33,556 INFO L124 PetriNetUnfolderBase]: 115/329 cut-off events. [2024-10-13 12:09:33,557 INFO L125 PetriNetUnfolderBase]: For 143/151 co-relation queries the response was YES. [2024-10-13 12:09:33,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 329 events. 115/329 cut-off events. For 143/151 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1510 event pairs, 22 based on Foata normal form. 8/333 useless extension candidates. Maximal degree in co-relation 818. Up to 60 conditions per place. [2024-10-13 12:09:33,559 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 40 selfloop transitions, 9 changer transitions 11/76 dead transitions. [2024-10-13 12:09:33,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 387 flow [2024-10-13 12:09:33,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:09:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:09:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-10-13 12:09:33,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-10-13 12:09:33,562 INFO L175 Difference]: Start difference. First operand has 62 places, 44 transitions, 165 flow. Second operand 10 states and 255 transitions. [2024-10-13 12:09:33,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 387 flow [2024-10-13 12:09:33,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 371 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-13 12:09:33,566 INFO L231 Difference]: Finished difference. Result has 71 places, 46 transitions, 199 flow [2024-10-13 12:09:33,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=199, PETRI_PLACES=71, PETRI_TRANSITIONS=46} [2024-10-13 12:09:33,567 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2024-10-13 12:09:33,567 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 46 transitions, 199 flow [2024-10-13 12:09:33,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2024-10-13 12:09:33,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:33,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:09:33,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:09:33,569 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-13 12:09:33,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1521138813, now seen corresponding path program 1 times [2024-10-13 12:09:33,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:33,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558993587] [2024-10-13 12:09:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:33,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:09:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:09:33,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:09:33,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558993587] [2024-10-13 12:09:33,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558993587] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:09:33,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:09:33,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:09:33,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585744523] [2024-10-13 12:09:33,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:09:33,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:09:33,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:09:33,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:09:33,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:09:33,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 62 [2024-10-13 12:09:33,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 46 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-10-13 12:09:33,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:09:33,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 62 [2024-10-13 12:09:33,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:09:33,892 INFO L124 PetriNetUnfolderBase]: 115/287 cut-off events. [2024-10-13 12:09:33,892 INFO L125 PetriNetUnfolderBase]: For 179/183 co-relation queries the response was YES. [2024-10-13 12:09:33,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 287 events. 115/287 cut-off events. For 179/183 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1156 event pairs, 26 based on Foata normal form. 6/287 useless extension candidates. Maximal degree in co-relation 812. Up to 64 conditions per place. [2024-10-13 12:09:33,896 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 25 selfloop transitions, 4 changer transitions 27/69 dead transitions. [2024-10-13 12:09:33,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 380 flow [2024-10-13 12:09:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:09:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:09:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-10-13 12:09:33,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4175627240143369 [2024-10-13 12:09:33,899 INFO L175 Difference]: Start difference. First operand has 71 places, 46 transitions, 199 flow. Second operand 9 states and 233 transitions. [2024-10-13 12:09:33,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 380 flow [2024-10-13 12:09:33,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 368 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-13 12:09:33,904 INFO L231 Difference]: Finished difference. Result has 67 places, 36 transitions, 148 flow [2024-10-13 12:09:33,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=148, PETRI_PLACES=67, PETRI_TRANSITIONS=36} [2024-10-13 12:09:33,906 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 1 predicate places. [2024-10-13 12:09:33,907 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 36 transitions, 148 flow [2024-10-13 12:09:33,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-10-13 12:09:33,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:33,907 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:09:33,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:09:33,908 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-13 12:09:33,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:33,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1431349493, now seen corresponding path program 1 times [2024-10-13 12:09:33,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:33,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6268805] [2024-10-13 12:09:33,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:33,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:09:34,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:09:34,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:09:34,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6268805] [2024-10-13 12:09:34,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6268805] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:09:34,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:09:34,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:09:34,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289181594] [2024-10-13 12:09:34,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:09:34,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:09:34,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:09:34,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:09:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:09:34,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 62 [2024-10-13 12:09:34,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 36 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-10-13 12:09:34,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:09:34,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 62 [2024-10-13 12:09:34,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:09:34,193 INFO L124 PetriNetUnfolderBase]: 78/183 cut-off events. [2024-10-13 12:09:34,193 INFO L125 PetriNetUnfolderBase]: For 120/124 co-relation queries the response was YES. [2024-10-13 12:09:34,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 183 events. 78/183 cut-off events. For 120/124 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 560 event pairs, 22 based on Foata normal form. 6/188 useless extension candidates. Maximal degree in co-relation 501. Up to 57 conditions per place. [2024-10-13 12:09:34,196 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2024-10-13 12:09:34,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 54 transitions, 295 flow [2024-10-13 12:09:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:09:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:09:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-10-13 12:09:34,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-10-13 12:09:34,199 INFO L175 Difference]: Start difference. First operand has 67 places, 36 transitions, 148 flow. Second operand 9 states and 225 transitions. [2024-10-13 12:09:34,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 54 transitions, 295 flow [2024-10-13 12:09:34,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 263 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-10-13 12:09:34,201 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2024-10-13 12:09:34,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2024-10-13 12:09:34,202 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -10 predicate places. [2024-10-13 12:09:34,202 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2024-10-13 12:09:34,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-10-13 12:09:34,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2024-10-13 12:09:34,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-10-13 12:09:34,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2024-10-13 12:09:34,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2024-10-13 12:09:34,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-10-13 12:09:34,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-10-13 12:09:34,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-10-13 12:09:34,213 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-10-13 12:09:34,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 12:09:34,213 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-10-13 12:09:34,222 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 12:09:34,222 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 12:09:34,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:09:34 BasicIcfg [2024-10-13 12:09:34,229 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 12:09:34,230 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 12:09:34,230 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 12:09:34,230 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 12:09:34,231 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:09:26" (3/4) ... [2024-10-13 12:09:34,234 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 12:09:34,237 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2024-10-13 12:09:34,238 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2024-10-13 12:09:34,242 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 53 nodes and edges [2024-10-13 12:09:34,242 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-10-13 12:09:34,243 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-13 12:09:34,243 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-13 12:09:34,353 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 12:09:34,354 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 12:09:34,354 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 12:09:34,355 INFO L158 Benchmark]: Toolchain (without parser) took 9419.49ms. Allocated memory was 140.5MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 81.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 247.7MB. Max. memory is 16.1GB. [2024-10-13 12:09:34,355 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 140.5MB. Free memory is still 100.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:09:34,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 559.54ms. Allocated memory is still 140.5MB. Free memory was 81.3MB in the beginning and 59.5MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-13 12:09:34,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.07ms. Allocated memory is still 140.5MB. Free memory was 59.2MB in the beginning and 110.2MB in the end (delta: -51.0MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2024-10-13 12:09:34,358 INFO L158 Benchmark]: Boogie Preprocessor took 93.28ms. Allocated memory was 140.5MB in the beginning and 201.3MB in the end (delta: 60.8MB). Free memory was 110.2MB in the beginning and 171.8MB in the end (delta: -61.7MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2024-10-13 12:09:34,359 INFO L158 Benchmark]: RCFGBuilder took 576.70ms. Allocated memory is still 201.3MB. Free memory was 171.8MB in the beginning and 141.4MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-10-13 12:09:34,359 INFO L158 Benchmark]: TraceAbstraction took 7985.49ms. Allocated memory was 201.3MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 141.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 241.0MB. Max. memory is 16.1GB. [2024-10-13 12:09:34,359 INFO L158 Benchmark]: Witness Printer took 124.46ms. Allocated memory is still 1.5GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 12:09:34,361 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 140.5MB. Free memory is still 100.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 559.54ms. Allocated memory is still 140.5MB. Free memory was 81.3MB in the beginning and 59.5MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.07ms. Allocated memory is still 140.5MB. Free memory was 59.2MB in the beginning and 110.2MB in the end (delta: -51.0MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.28ms. Allocated memory was 140.5MB in the beginning and 201.3MB in the end (delta: 60.8MB). Free memory was 110.2MB in the beginning and 171.8MB in the end (delta: -61.7MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * RCFGBuilder took 576.70ms. Allocated memory is still 201.3MB. Free memory was 171.8MB in the beginning and 141.4MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7985.49ms. Allocated memory was 201.3MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 141.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 241.0MB. Max. memory is 16.1GB. * Witness Printer took 124.46ms. Allocated memory is still 1.5GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 714]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 84 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 425 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 381 mSDsluCounter, 141 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1098 IncrementalHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 47 mSDtfsCounter, 1098 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=312occurred in iteration=1, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 12:09:34,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE