./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:35:47,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:35:47,549 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:35:47,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:35:47,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:35:47,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:35:47,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:35:47,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:35:47,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:35:47,592 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:35:47,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:35:47,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:35:47,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:35:47,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:35:47,595 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:35:47,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:35:47,595 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:35:47,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:35:47,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:35:47,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:35:47,596 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:35:47,597 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:35:47,597 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:35:47,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:35:47,600 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:35:47,601 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:35:47,601 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:35:47,601 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:35:47,601 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:35:47,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:35:47,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:35:47,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:35:47,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:35:47,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:35:47,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:35:47,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:35:47,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:35:47,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:35:47,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:35:47,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:35:47,604 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:35:47,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:35:47,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2024-11-22 21:35:47,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:35:47,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:35:47,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:35:47,885 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:35:47,886 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:35:47,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-11-22 21:35:49,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:35:49,527 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:35:49,527 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2024-11-22 21:35:49,547 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348391352/990d9889f7554dcabf780b3fcc932a2f/FLAG48b21a0cf [2024-11-22 21:35:49,564 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348391352/990d9889f7554dcabf780b3fcc932a2f [2024-11-22 21:35:49,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:35:49,568 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:35:49,570 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:35:49,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:35:49,575 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:35:49,576 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:35:49" (1/1) ... [2024-11-22 21:35:49,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76de11f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:49, skipping insertion in model container [2024-11-22 21:35:49,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:35:49" (1/1) ... [2024-11-22 21:35:49,625 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:35:50,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:35:50,152 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:35:50,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:35:50,282 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:35:50,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50 WrapperNode [2024-11-22 21:35:50,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:35:50,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:35:50,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:35:50,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:35:50,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ... [2024-11-22 21:35:50,314 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ... [2024-11-22 21:35:50,347 INFO L138 Inliner]: procedures = 263, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 143 [2024-11-22 21:35:50,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:35:50,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:35:50,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:35:50,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:35:50,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ... [2024-11-22 21:35:50,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ... [2024-11-22 21:35:50,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ... [2024-11-22 21:35:50,390 INFO L175 MemorySlicer]: Split 66 memory accesses to 1 slices as follows [66]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 3 writes are split as follows [3]. [2024-11-22 21:35:50,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ... [2024-11-22 21:35:50,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ... [2024-11-22 21:35:50,402 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ... [2024-11-22 21:35:50,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ... [2024-11-22 21:35:50,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ... [2024-11-22 21:35:50,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ... [2024-11-22 21:35:50,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:35:50,424 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:35:50,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:35:50,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:35:50,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (1/1) ... [2024-11-22 21:35:50,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:35:50,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:50,465 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) [2024-11-22 21:35:50,469 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 [2024-11-22 21:35:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 21:35:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:35:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:35:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 21:35:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:35:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-22 21:35:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-22 21:35:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:35:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:35:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:35:50,525 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:35:50,649 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:35:50,651 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:35:50,955 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:35:50,955 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:35:51,283 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:35:51,284 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 21:35:51,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:35:51 BoogieIcfgContainer [2024-11-22 21:35:51,286 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:35:51,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:35:51,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:35:51,292 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:35:51,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:35:49" (1/3) ... [2024-11-22 21:35:51,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1802c9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:35:51, skipping insertion in model container [2024-11-22 21:35:51,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:50" (2/3) ... [2024-11-22 21:35:51,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1802c9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:35:51, skipping insertion in model container [2024-11-22 21:35:51,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:35:51" (3/3) ... [2024-11-22 21:35:51,296 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2024-11-22 21:35:51,312 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:35:51,312 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-11-22 21:35:51,313 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:35:51,361 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:35:51,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 43 transitions, 90 flow [2024-11-22 21:35:51,433 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2024-11-22 21:35:51,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:35:51,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 122 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-11-22 21:35:51,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 43 transitions, 90 flow [2024-11-22 21:35:51,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 42 transitions, 87 flow [2024-11-22 21:35:51,455 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:35:51,463 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;@190fe4ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:35:51,464 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-22 21:35:51,472 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:35:51,473 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-22 21:35:51,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:35:51,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:51,475 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:51,475 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 21:35:51,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:51,481 INFO L85 PathProgramCache]: Analyzing trace with hash -42604094, now seen corresponding path program 1 times [2024-11-22 21:35:51,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:51,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820594119] [2024-11-22 21:35:51,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:51,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:51,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:51,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820594119] [2024-11-22 21:35:51,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820594119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:35:51,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:35:51,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:35:51,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804950508] [2024-11-22 21:35:51,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:35:51,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:35:51,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:51,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:35:51,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:35:51,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-22 21:35:51,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-11-22 21:35:51,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:51,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-22 21:35:51,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:52,129 INFO L124 PetriNetUnfolderBase]: 114/317 cut-off events. [2024-11-22 21:35:52,130 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:35:52,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 317 events. 114/317 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1617 event pairs, 91 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 536. Up to 229 conditions per place. [2024-11-22 21:35:52,136 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 25 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-11-22 21:35:52,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 143 flow [2024-11-22 21:35:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:35:52,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:35:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-22 21:35:52,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6124031007751938 [2024-11-22 21:35:52,152 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 87 flow. Second operand 3 states and 79 transitions. [2024-11-22 21:35:52,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 143 flow [2024-11-22 21:35:52,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:35:52,156 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 98 flow [2024-11-22 21:35:52,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-22 21:35:52,163 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-11-22 21:35:52,163 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 98 flow [2024-11-22 21:35:52,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-11-22 21:35:52,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:52,164 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:52,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:35:52,164 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 21:35:52,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:52,165 INFO L85 PathProgramCache]: Analyzing trace with hash -361866624, now seen corresponding path program 1 times [2024-11-22 21:35:52,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:52,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890281947] [2024-11-22 21:35:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:52,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:52,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:52,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890281947] [2024-11-22 21:35:52,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890281947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:35:52,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720112217] [2024-11-22 21:35:52,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:52,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:52,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:52,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:35:52,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:35:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:52,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 21:35:52,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:35:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:52,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:35:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:52,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720112217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:35:52,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:35:52,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-22 21:35:52,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895450075] [2024-11-22 21:35:52,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:35:52,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:35:52,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:52,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:35:52,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:35:52,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-22 21:35:52,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 98 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 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) [2024-11-22 21:35:52,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:52,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-22 21:35:52,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:52,624 INFO L124 PetriNetUnfolderBase]: 114/320 cut-off events. [2024-11-22 21:35:52,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:35:52,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 320 events. 114/320 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1617 event pairs, 91 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 555. Up to 229 conditions per place. [2024-11-22 21:35:52,629 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 25 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2024-11-22 21:35:52,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 170 flow [2024-11-22 21:35:52,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:35:52,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:35:52,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-11-22 21:35:52,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2024-11-22 21:35:52,633 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 98 flow. Second operand 6 states and 135 transitions. [2024-11-22 21:35:52,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 170 flow [2024-11-22 21:35:52,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 166 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 21:35:52,637 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 130 flow [2024-11-22 21:35:52,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-11-22 21:35:52,638 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-11-22 21:35:52,638 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 130 flow [2024-11-22 21:35:52,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 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) [2024-11-22 21:35:52,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:52,639 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:52,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:35:52,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:52,840 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 21:35:52,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:52,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1948715364, now seen corresponding path program 2 times [2024-11-22 21:35:52,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:52,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351557306] [2024-11-22 21:35:52,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:35:52,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:52,875 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:35:52,883 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 21:35:53,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:53,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351557306] [2024-11-22 21:35:53,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351557306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:35:53,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:35:53,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:35:53,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563963369] [2024-11-22 21:35:53,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:35:53,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:35:53,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:53,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:35:53,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:35:53,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-22 21:35:53,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-11-22 21:35:53,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:53,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-22 21:35:53,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:53,333 INFO L124 PetriNetUnfolderBase]: 226/558 cut-off events. [2024-11-22 21:35:53,334 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:35:53,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 558 events. 226/558 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2836 event pairs, 117 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 1008. Up to 288 conditions per place. [2024-11-22 21:35:53,338 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 62 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-11-22 21:35:53,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 326 flow [2024-11-22 21:35:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:35:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:35:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-11-22 21:35:53,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6325581395348837 [2024-11-22 21:35:53,340 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 130 flow. Second operand 5 states and 136 transitions. [2024-11-22 21:35:53,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 326 flow [2024-11-22 21:35:53,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 312 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-22 21:35:53,343 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 138 flow [2024-11-22 21:35:53,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-11-22 21:35:53,344 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-11-22 21:35:53,344 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 138 flow [2024-11-22 21:35:53,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-11-22 21:35:53,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:53,345 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:53,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:35:53,346 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 21:35:53,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:53,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1948715363, now seen corresponding path program 1 times [2024-11-22 21:35:53,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:53,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002007169] [2024-11-22 21:35:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:53,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 21:35:53,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:53,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002007169] [2024-11-22 21:35:53,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002007169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:35:53,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:35:53,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:35:53,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939340582] [2024-11-22 21:35:53,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:35:53,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:35:53,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:53,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:35:53,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:35:53,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-22 21:35:53,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-11-22 21:35:53,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:53,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-22 21:35:53,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:53,634 INFO L124 PetriNetUnfolderBase]: 198/477 cut-off events. [2024-11-22 21:35:53,657 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-11-22 21:35:53,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 477 events. 198/477 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2246 event pairs, 39 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 1011. Up to 280 conditions per place. [2024-11-22 21:35:53,664 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 41 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-11-22 21:35:53,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 250 flow [2024-11-22 21:35:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:35:53,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:35:53,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-22 21:35:53,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2024-11-22 21:35:53,669 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 138 flow. Second operand 4 states and 98 transitions. [2024-11-22 21:35:53,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 250 flow [2024-11-22 21:35:53,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 56 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:35:53,671 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 136 flow [2024-11-22 21:35:53,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-11-22 21:35:53,672 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-11-22 21:35:53,672 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 136 flow [2024-11-22 21:35:53,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-11-22 21:35:53,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:53,676 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:53,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:35:53,677 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 21:35:53,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:53,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1918963906, now seen corresponding path program 1 times [2024-11-22 21:35:53,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:53,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850243809] [2024-11-22 21:35:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:53,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 21:35:53,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:53,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850243809] [2024-11-22 21:35:53,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850243809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:35:53,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:35:53,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:35:53,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001734201] [2024-11-22 21:35:53,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:35:53,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:35:53,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:53,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:35:53,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:35:53,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-22 21:35:53,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-11-22 21:35:53,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:53,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-22 21:35:53,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:53,917 INFO L124 PetriNetUnfolderBase]: 198/482 cut-off events. [2024-11-22 21:35:53,918 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-11-22 21:35:53,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 482 events. 198/482 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2325 event pairs, 104 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 1046. Up to 260 conditions per place. [2024-11-22 21:35:53,922 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 39 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2024-11-22 21:35:53,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 258 flow [2024-11-22 21:35:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:35:53,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:35:53,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-22 21:35:53,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2024-11-22 21:35:53,924 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 136 flow. Second operand 4 states and 88 transitions. [2024-11-22 21:35:53,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 258 flow [2024-11-22 21:35:53,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 240 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:35:53,928 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 128 flow [2024-11-22 21:35:53,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-11-22 21:35:53,930 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-11-22 21:35:53,930 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 128 flow [2024-11-22 21:35:53,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-11-22 21:35:53,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:53,931 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:53,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:35:53,932 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 21:35:53,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:53,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1918963907, now seen corresponding path program 1 times [2024-11-22 21:35:53,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:53,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014758669] [2024-11-22 21:35:53,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:53,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:54,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:54,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014758669] [2024-11-22 21:35:54,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014758669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:35:54,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514638313] [2024-11-22 21:35:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:54,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:54,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:54,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:35:54,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:35:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:54,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:35:54,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:35:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:54,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:35:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:54,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514638313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:35:54,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:35:54,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-22 21:35:54,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500314302] [2024-11-22 21:35:54,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:35:54,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:35:54,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:54,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:35:54,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:35:54,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-22 21:35:54,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 128 flow. Second operand has 13 states, 13 states have (on average 18.384615384615383) internal successors, (239), 13 states have internal predecessors, (239), 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) [2024-11-22 21:35:54,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:54,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-22 21:35:54,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:54,332 INFO L124 PetriNetUnfolderBase]: 198/477 cut-off events. [2024-11-22 21:35:54,333 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-22 21:35:54,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 477 events. 198/477 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2173 event pairs, 169 based on Foata normal form. 6/467 useless extension candidates. Maximal degree in co-relation 1017. Up to 397 conditions per place. [2024-11-22 21:35:54,335 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 27 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-11-22 21:35:54,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 46 transitions, 240 flow [2024-11-22 21:35:54,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 21:35:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 21:35:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 246 transitions. [2024-11-22 21:35:54,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-11-22 21:35:54,337 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 128 flow. Second operand 12 states and 246 transitions. [2024-11-22 21:35:54,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 46 transitions, 240 flow [2024-11-22 21:35:54,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 46 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:35:54,340 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 206 flow [2024-11-22 21:35:54,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=206, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2024-11-22 21:35:54,341 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-11-22 21:35:54,341 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 206 flow [2024-11-22 21:35:54,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.384615384615383) internal successors, (239), 13 states have internal predecessors, (239), 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) [2024-11-22 21:35:54,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:54,341 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:54,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 21:35:54,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 21:35:54,543 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 21:35:54,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:54,543 INFO L85 PathProgramCache]: Analyzing trace with hash 909392707, now seen corresponding path program 2 times [2024-11-22 21:35:54,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:54,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647790176] [2024-11-22 21:35:54,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:35:54,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:54,565 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:35:54,565 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:35:54,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647790176] [2024-11-22 21:35:54,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647790176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:35:54,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:35:54,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:35:54,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775239259] [2024-11-22 21:35:54,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:35:54,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:35:54,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:54,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:35:54,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:35:54,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-22 21:35:54,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-11-22 21:35:54,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:54,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-22 21:35:54,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:54,883 INFO L124 PetriNetUnfolderBase]: 310/694 cut-off events. [2024-11-22 21:35:54,883 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-11-22 21:35:54,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 694 events. 310/694 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3190 event pairs, 172 based on Foata normal form. 0/630 useless extension candidates. Maximal degree in co-relation 1470. Up to 462 conditions per place. [2024-11-22 21:35:54,887 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 62 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-11-22 21:35:54,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 418 flow [2024-11-22 21:35:54,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:35:54,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:35:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-22 21:35:54,889 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5488372093023256 [2024-11-22 21:35:54,889 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 206 flow. Second operand 5 states and 118 transitions. [2024-11-22 21:35:54,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 418 flow [2024-11-22 21:35:54,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 370 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-22 21:35:54,892 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 184 flow [2024-11-22 21:35:54,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2024-11-22 21:35:54,893 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-11-22 21:35:54,893 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 184 flow [2024-11-22 21:35:54,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-11-22 21:35:54,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:54,894 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:54,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:35:54,894 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 21:35:54,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:54,895 INFO L85 PathProgramCache]: Analyzing trace with hash -546771875, now seen corresponding path program 1 times [2024-11-22 21:35:54,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:54,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198325636] [2024-11-22 21:35:54,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:54,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:35:55,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:55,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198325636] [2024-11-22 21:35:55,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198325636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:35:55,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308635959] [2024-11-22 21:35:55,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:55,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:55,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:55,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:35:55,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:35:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:55,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 21:35:55,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:35:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:35:55,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:35:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:35:55,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308635959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:35:55,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:35:55,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-22 21:35:55,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377054108] [2024-11-22 21:35:55,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:35:55,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 21:35:55,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:55,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 21:35:55,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-22 21:35:55,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-22 21:35:55,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 184 flow. Second operand has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 states have internal predecessors, (224), 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) [2024-11-22 21:35:55,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:55,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-22 21:35:55,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:56,509 INFO L124 PetriNetUnfolderBase]: 662/1448 cut-off events. [2024-11-22 21:35:56,509 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2024-11-22 21:35:56,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3374 conditions, 1448 events. 662/1448 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 7063 event pairs, 76 based on Foata normal form. 140/1535 useless extension candidates. Maximal degree in co-relation 3318. Up to 254 conditions per place. [2024-11-22 21:35:56,518 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 195 selfloop transitions, 12 changer transitions 0/213 dead transitions. [2024-11-22 21:35:56,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 213 transitions, 1082 flow [2024-11-22 21:35:56,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 21:35:56,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 21:35:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 343 transitions. [2024-11-22 21:35:56,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6647286821705426 [2024-11-22 21:35:56,520 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 184 flow. Second operand 12 states and 343 transitions. [2024-11-22 21:35:56,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 213 transitions, 1082 flow [2024-11-22 21:35:56,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 213 transitions, 1060 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:35:56,525 INFO L231 Difference]: Finished difference. Result has 80 places, 54 transitions, 259 flow [2024-11-22 21:35:56,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=259, PETRI_PLACES=80, PETRI_TRANSITIONS=54} [2024-11-22 21:35:56,525 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-11-22 21:35:56,526 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 54 transitions, 259 flow [2024-11-22 21:35:56,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 states have internal predecessors, (224), 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) [2024-11-22 21:35:56,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:56,526 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:56,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:35:56,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:56,730 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 21:35:56,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:56,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1322317096, now seen corresponding path program 1 times [2024-11-22 21:35:56,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:56,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435430702] [2024-11-22 21:35:56,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:56,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:35:57,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:57,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435430702] [2024-11-22 21:35:57,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435430702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:35:57,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136240684] [2024-11-22 21:35:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:57,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:57,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:57,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:35:57,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:35:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:57,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 21:35:57,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:35:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:35:57,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:35:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:35:57,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136240684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:35:57,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:35:57,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-22 21:35:57,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294600856] [2024-11-22 21:35:57,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:35:57,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 21:35:57,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:57,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 21:35:57,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-22 21:35:57,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-22 21:35:57,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 54 transitions, 259 flow. Second operand has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 states have internal predecessors, (224), 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) [2024-11-22 21:35:57,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:57,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-22 21:35:57,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:58,347 INFO L124 PetriNetUnfolderBase]: 1250/2746 cut-off events. [2024-11-22 21:35:58,347 INFO L125 PetriNetUnfolderBase]: For 3118/3118 co-relation queries the response was YES. [2024-11-22 21:35:58,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7323 conditions, 2746 events. 1250/2746 cut-off events. For 3118/3118 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 14937 event pairs, 306 based on Foata normal form. 224/2938 useless extension candidates. Maximal degree in co-relation 7260. Up to 782 conditions per place. [2024-11-22 21:35:58,369 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 211 selfloop transitions, 12 changer transitions 0/228 dead transitions. [2024-11-22 21:35:58,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 228 transitions, 1729 flow [2024-11-22 21:35:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 21:35:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 21:35:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 289 transitions. [2024-11-22 21:35:58,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.560077519379845 [2024-11-22 21:35:58,371 INFO L175 Difference]: Start difference. First operand has 80 places, 54 transitions, 259 flow. Second operand 12 states and 289 transitions. [2024-11-22 21:35:58,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 228 transitions, 1729 flow [2024-11-22 21:35:58,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 228 transitions, 1548 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-11-22 21:35:58,379 INFO L231 Difference]: Finished difference. Result has 94 places, 60 transitions, 319 flow [2024-11-22 21:35:58,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=319, PETRI_PLACES=94, PETRI_TRANSITIONS=60} [2024-11-22 21:35:58,380 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2024-11-22 21:35:58,380 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 60 transitions, 319 flow [2024-11-22 21:35:58,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 states have internal predecessors, (224), 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) [2024-11-22 21:35:58,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:58,381 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-22 21:35:58,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 21:35:58,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:58,585 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 21:35:58,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:58,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1788139428, now seen corresponding path program 2 times [2024-11-22 21:35:58,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:58,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469716107] [2024-11-22 21:35:58,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:35:58,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:58,623 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:35:58,623 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 21 proven. 37 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:35:59,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:59,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469716107] [2024-11-22 21:35:59,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469716107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:35:59,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826191356] [2024-11-22 21:35:59,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:35:59,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:59,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:59,029 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:35:59,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:35:59,155 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:35:59,155 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:59,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 21:35:59,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:35:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:35:59,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:35:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:35:59,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826191356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:35:59,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:35:59,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-22 21:35:59,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052777892] [2024-11-22 21:35:59,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:35:59,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 21:35:59,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:59,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 21:35:59,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-22 21:36:00,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-22 21:36:00,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 60 transitions, 319 flow. Second operand has 23 states, 23 states have (on average 17.17391304347826) internal successors, (395), 23 states have internal predecessors, (395), 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) [2024-11-22 21:36:00,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:36:00,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-22 21:36:00,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:36:02,294 INFO L124 PetriNetUnfolderBase]: 2396/5190 cut-off events. [2024-11-22 21:36:02,294 INFO L125 PetriNetUnfolderBase]: For 9480/9480 co-relation queries the response was YES. [2024-11-22 21:36:02,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14779 conditions, 5190 events. 2396/5190 cut-off events. For 9480/9480 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 29815 event pairs, 0 based on Foata normal form. 456/5646 useless extension candidates. Maximal degree in co-relation 14708. Up to 533 conditions per place. [2024-11-22 21:36:02,341 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 538 selfloop transitions, 23 changer transitions 22/588 dead transitions. [2024-11-22 21:36:02,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 588 transitions, 4147 flow [2024-11-22 21:36:02,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 21:36:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-22 21:36:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 699 transitions. [2024-11-22 21:36:02,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-22 21:36:02,345 INFO L175 Difference]: Start difference. First operand has 94 places, 60 transitions, 319 flow. Second operand 24 states and 699 transitions. [2024-11-22 21:36:02,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 588 transitions, 4147 flow [2024-11-22 21:36:02,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 588 transitions, 3742 flow, removed 154 selfloop flow, removed 7 redundant places. [2024-11-22 21:36:02,368 INFO L231 Difference]: Finished difference. Result has 115 places, 69 transitions, 411 flow [2024-11-22 21:36:02,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=411, PETRI_PLACES=115, PETRI_TRANSITIONS=69} [2024-11-22 21:36:02,369 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 72 predicate places. [2024-11-22 21:36:02,370 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 69 transitions, 411 flow [2024-11-22 21:36:02,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.17391304347826) internal successors, (395), 23 states have internal predecessors, (395), 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) [2024-11-22 21:36:02,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:36:02,370 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-22 21:36:02,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 21:36:02,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 21:36:02,571 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 21:36:02,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:36:02,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1751442429, now seen corresponding path program 2 times [2024-11-22 21:36:02,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:36:02,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923396947] [2024-11-22 21:36:02,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:36:02,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:36:02,616 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:36:02,616 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:36:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:36:03,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:36:03,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923396947] [2024-11-22 21:36:03,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923396947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:36:03,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410846857] [2024-11-22 21:36:03,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:36:03,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:36:03,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:36:03,014 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:36:03,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:36:03,148 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:36:03,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:36:03,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 21:36:03,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:36:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 46 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:36:03,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:36:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:36:04,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410846857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:36:04,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:36:04,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-22 21:36:04,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214623913] [2024-11-22 21:36:04,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:36:04,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 21:36:04,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:36:04,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 21:36:04,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-11-22 21:36:04,368 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-22 21:36:04,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 69 transitions, 411 flow. Second operand has 23 states, 23 states have (on average 17.17391304347826) internal successors, (395), 23 states have internal predecessors, (395), 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) [2024-11-22 21:36:04,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:36:04,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-22 21:36:04,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:36:06,003 INFO L124 PetriNetUnfolderBase]: 2711/5946 cut-off events. [2024-11-22 21:36:06,004 INFO L125 PetriNetUnfolderBase]: For 11939/11939 co-relation queries the response was YES. [2024-11-22 21:36:06,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17492 conditions, 5946 events. 2711/5946 cut-off events. For 11939/11939 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 36017 event pairs, 0 based on Foata normal form. 189/6135 useless extension candidates. Maximal degree in co-relation 17418. Up to 945 conditions per place. [2024-11-22 21:36:06,063 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 407 selfloop transitions, 14 changer transitions 0/425 dead transitions. [2024-11-22 21:36:06,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 425 transitions, 3833 flow [2024-11-22 21:36:06,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 21:36:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 21:36:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 349 transitions. [2024-11-22 21:36:06,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5410852713178295 [2024-11-22 21:36:06,066 INFO L175 Difference]: Start difference. First operand has 115 places, 69 transitions, 411 flow. Second operand 15 states and 349 transitions. [2024-11-22 21:36:06,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 425 transitions, 3833 flow [2024-11-22 21:36:06,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 425 transitions, 3264 flow, removed 169 selfloop flow, removed 14 redundant places. [2024-11-22 21:36:06,090 INFO L231 Difference]: Finished difference. Result has 114 places, 70 transitions, 391 flow [2024-11-22 21:36:06,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=391, PETRI_PLACES=114, PETRI_TRANSITIONS=70} [2024-11-22 21:36:06,091 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2024-11-22 21:36:06,091 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 70 transitions, 391 flow [2024-11-22 21:36:06,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.17391304347826) internal successors, (395), 23 states have internal predecessors, (395), 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) [2024-11-22 21:36:06,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:36:06,091 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:36:06,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 21:36:06,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:36:06,292 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 21:36:06,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:36:06,293 INFO L85 PathProgramCache]: Analyzing trace with hash 237533891, now seen corresponding path program 1 times [2024-11-22 21:36:06,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:36:06,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566392879] [2024-11-22 21:36:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:36:06,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:36:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:36:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-22 21:36:06,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:36:06,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566392879] [2024-11-22 21:36:06,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566392879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:36:06,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:36:06,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:36:06,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748485342] [2024-11-22 21:36:06,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:36:06,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:36:06,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:36:06,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:36:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:36:06,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-11-22 21:36:06,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 70 transitions, 391 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-22 21:36:06,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:36:06,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-11-22 21:36:06,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:36:07,029 INFO L124 PetriNetUnfolderBase]: 2711/5874 cut-off events. [2024-11-22 21:36:07,029 INFO L125 PetriNetUnfolderBase]: For 9430/9430 co-relation queries the response was YES. [2024-11-22 21:36:07,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17207 conditions, 5874 events. 2711/5874 cut-off events. For 9430/9430 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 35173 event pairs, 2604 based on Foata normal form. 63/5936 useless extension candidates. Maximal degree in co-relation 17136. Up to 5432 conditions per place. [2024-11-22 21:36:07,059 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2024-11-22 21:36:07,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 69 transitions, 521 flow [2024-11-22 21:36:07,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:36:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:36:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-11-22 21:36:07,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2024-11-22 21:36:07,061 INFO L175 Difference]: Start difference. First operand has 114 places, 70 transitions, 391 flow. Second operand 3 states and 74 transitions. [2024-11-22 21:36:07,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 69 transitions, 521 flow [2024-11-22 21:36:07,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 69 transitions, 496 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-11-22 21:36:07,084 INFO L231 Difference]: Finished difference. Result has 105 places, 0 transitions, 0 flow [2024-11-22 21:36:07,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=105, PETRI_TRANSITIONS=0} [2024-11-22 21:36:07,084 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2024-11-22 21:36:07,085 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 0 transitions, 0 flow [2024-11-22 21:36:07,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-22 21:36:07,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2024-11-22 21:36:07,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2024-11-22 21:36:07,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2024-11-22 21:36:07,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2024-11-22 21:36:07,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2024-11-22 21:36:07,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2024-11-22 21:36:07,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2024-11-22 21:36:07,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2024-11-22 21:36:07,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (9 of 18 remaining) [2024-11-22 21:36:07,089 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-11-22 21:36:07,089 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2024-11-22 21:36:07,089 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2024-11-22 21:36:07,089 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2024-11-22 21:36:07,089 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2024-11-22 21:36:07,089 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2024-11-22 21:36:07,089 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2024-11-22 21:36:07,089 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2024-11-22 21:36:07,089 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2024-11-22 21:36:07,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 21:36:07,090 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1] [2024-11-22 21:36:07,095 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-22 21:36:07,095 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 21:36:07,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 09:36:07 BasicIcfg [2024-11-22 21:36:07,099 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 21:36:07,100 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 21:36:07,100 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 21:36:07,100 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 21:36:07,101 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:35:51" (3/4) ... [2024-11-22 21:36:07,102 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 21:36:07,106 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-22 21:36:07,113 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 83 nodes and edges [2024-11-22 21:36:07,113 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-22 21:36:07,113 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 21:36:07,113 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 21:36:07,193 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 21:36:07,194 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 21:36:07,194 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 21:36:07,195 INFO L158 Benchmark]: Toolchain (without parser) took 17627.14ms. Allocated memory was 161.5MB in the beginning and 461.4MB in the end (delta: 299.9MB). Free memory was 128.2MB in the beginning and 127.9MB in the end (delta: 270.1kB). Peak memory consumption was 299.0MB. Max. memory is 16.1GB. [2024-11-22 21:36:07,195 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 21:36:07,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 714.22ms. Allocated memory is still 161.5MB. Free memory was 128.2MB in the beginning and 95.8MB in the end (delta: 32.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-11-22 21:36:07,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.04ms. Allocated memory is still 161.5MB. Free memory was 95.8MB in the beginning and 92.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 21:36:07,196 INFO L158 Benchmark]: Boogie Preprocessor took 74.74ms. Allocated memory is still 161.5MB. Free memory was 92.5MB in the beginning and 89.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 21:36:07,196 INFO L158 Benchmark]: RCFGBuilder took 861.95ms. Allocated memory is still 161.5MB. Free memory was 89.5MB in the beginning and 92.0MB in the end (delta: -2.5MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. [2024-11-22 21:36:07,196 INFO L158 Benchmark]: TraceAbstraction took 15811.83ms. Allocated memory was 161.5MB in the beginning and 461.4MB in the end (delta: 299.9MB). Free memory was 90.9MB in the beginning and 133.2MB in the end (delta: -42.2MB). Peak memory consumption was 316.4MB. Max. memory is 16.1GB. [2024-11-22 21:36:07,196 INFO L158 Benchmark]: Witness Printer took 94.28ms. Allocated memory is still 461.4MB. Free memory was 133.2MB in the beginning and 127.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 21:36:07,198 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 714.22ms. Allocated memory is still 161.5MB. Free memory was 128.2MB in the beginning and 95.8MB in the end (delta: 32.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.04ms. Allocated memory is still 161.5MB. Free memory was 95.8MB in the beginning and 92.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.74ms. Allocated memory is still 161.5MB. Free memory was 92.5MB in the beginning and 89.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 861.95ms. Allocated memory is still 161.5MB. Free memory was 89.5MB in the beginning and 92.0MB in the end (delta: -2.5MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15811.83ms. Allocated memory was 161.5MB in the beginning and 461.4MB in the end (delta: 299.9MB). Free memory was 90.9MB in the beginning and 133.2MB in the end (delta: -42.2MB). Peak memory consumption was 316.4MB. Max. memory is 16.1GB. * Witness Printer took 94.28ms. Allocated memory is still 461.4MB. Free memory was 133.2MB in the beginning and 127.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 931]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 55 locations, 18 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: 15.7s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2726 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2597 mSDsluCounter, 454 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 450 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6141 IncrementalHoareTripleChecker+Invalid, 6204 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 4 mSDtfsCounter, 6141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 408 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=411occurred in iteration=10, InterpolantAutomatonStates: 105, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 445 NumberOfCodeBlocks, 431 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 584 ConstructedInterpolants, 0 QuantifiedInterpolants, 6941 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1779 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 984/1280 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 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-22 21:36:07,215 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