./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_08-tricky_address3.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 a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:15:47,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:15:47,404 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:15:47,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:15:47,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:15:47,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:15:47,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:15:47,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:15:47,431 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:15:47,431 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:15:47,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:15:47,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:15:47,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:15:47,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:15:47,435 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:15:47,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:15:47,436 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:15:47,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:15:47,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:15:47,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:15:47,439 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:15:47,440 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:15:47,440 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:15:47,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:15:47,441 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:15:47,441 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:15:47,441 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:15:47,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:15:47,442 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:15:47,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:15:47,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:15:47,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:15:47,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:15:47,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:15:47,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:15:47,444 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:15:47,444 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:15:47,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:15:47,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:15:47,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:15:47,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:15:47,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:15:47,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb [2024-11-12 16:15:47,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:15:47,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:15:47,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:15:47,718 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:15:47,718 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:15:47,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2024-11-12 16:15:49,131 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:15:49,407 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:15:49,410 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2024-11-12 16:15:49,432 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f1ac3927/70350a2eeecf401a840768dd60ad1fc4/FLAG3f4e977e2 [2024-11-12 16:15:49,463 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f1ac3927/70350a2eeecf401a840768dd60ad1fc4 [2024-11-12 16:15:49,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:15:49,469 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:15:49,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:15:49,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:15:49,475 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:15:49,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:15:49" (1/1) ... [2024-11-12 16:15:49,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be5b104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:49, skipping insertion in model container [2024-11-12 16:15:49,477 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:15:49" (1/1) ... [2024-11-12 16:15:49,537 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:15:49,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:15:50,046 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:15:50,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:15:50,179 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:15:50,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50 WrapperNode [2024-11-12 16:15:50,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:15:50,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:15:50,182 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:15:50,182 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:15:50,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50" (1/1) ... [2024-11-12 16:15:50,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50" (1/1) ... [2024-11-12 16:15:50,252 INFO L138 Inliner]: procedures = 265, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 130 [2024-11-12 16:15:50,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:15:50,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:15:50,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:15:50,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:15:50,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50" (1/1) ... [2024-11-12 16:15:50,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50" (1/1) ... [2024-11-12 16:15:50,274 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50" (1/1) ... [2024-11-12 16:15:50,297 INFO L175 MemorySlicer]: Split 64 memory accesses to 1 slices as follows [64]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 2 writes are split as follows [2]. [2024-11-12 16:15:50,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50" (1/1) ... [2024-11-12 16:15:50,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50" (1/1) ... [2024-11-12 16:15:50,309 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50" (1/1) ... [2024-11-12 16:15:50,315 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50" (1/1) ... [2024-11-12 16:15:50,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50" (1/1) ... [2024-11-12 16:15:50,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50" (1/1) ... [2024-11-12 16:15:50,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:15:50,327 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:15:50,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:15:50,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:15:50,333 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50" (1/1) ... [2024-11-12 16:15:50,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:15:50,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:15:50,367 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) [2024-11-12 16:15:50,369 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 [2024-11-12 16:15:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 16:15:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 16:15:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 16:15:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 16:15:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:15:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-12 16:15:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-12 16:15:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:15:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:15:50,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:15:50,415 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:15:50,531 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:15:50,534 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:15:50,830 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:15:50,830 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:15:51,237 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:15:51,238 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-12 16:15:51,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:15:51 BoogieIcfgContainer [2024-11-12 16:15:51,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:15:51,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:15:51,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:15:51,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:15:51,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:15:49" (1/3) ... [2024-11-12 16:15:51,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65eb9e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:15:51, skipping insertion in model container [2024-11-12 16:15:51,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:50" (2/3) ... [2024-11-12 16:15:51,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65eb9e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:15:51, skipping insertion in model container [2024-11-12 16:15:51,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:15:51" (3/3) ... [2024-11-12 16:15:51,249 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2024-11-12 16:15:51,265 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:15:51,265 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-11-12 16:15:51,265 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:15:51,307 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 16:15:51,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 62 flow [2024-11-12 16:15:51,369 INFO L124 PetriNetUnfolderBase]: 1/28 cut-off events. [2024-11-12 16:15:51,371 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:15:51,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 28 events. 1/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 50 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 3. Up to 2 conditions per place. [2024-11-12 16:15:51,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 62 flow [2024-11-12 16:15:51,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 28 transitions, 59 flow [2024-11-12 16:15:51,388 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:15:51,397 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;@2f7c3078, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:15:51,397 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-12 16:15:51,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:15:51,405 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-11-12 16:15:51,405 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:15:51,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:51,406 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:51,407 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-12 16:15:51,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:51,413 INFO L85 PathProgramCache]: Analyzing trace with hash 452226079, now seen corresponding path program 1 times [2024-11-12 16:15:51,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:51,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066636881] [2024-11-12 16:15:51,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:51,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:15:51,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:51,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066636881] [2024-11-12 16:15:51,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066636881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:15:51,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:15:51,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:15:51,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680983980] [2024-11-12 16:15:51,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:15:51,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:15:51,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:51,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:15:51,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:15:51,795 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-11-12 16:15:51,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-12 16:15:51,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:51,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-11-12 16:15:51,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:51,894 INFO L124 PetriNetUnfolderBase]: 50/150 cut-off events. [2024-11-12 16:15:51,895 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:15:51,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 150 events. 50/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 561 event pairs, 49 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 257. Up to 117 conditions per place. [2024-11-12 16:15:51,900 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 17 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-11-12 16:15:51,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 99 flow [2024-11-12 16:15:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:15:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:15:51,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-11-12 16:15:51,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2024-11-12 16:15:51,913 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 59 flow. Second operand 3 states and 53 transitions. [2024-11-12 16:15:51,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 99 flow [2024-11-12 16:15:51,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:15:51,919 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 70 flow [2024-11-12 16:15:51,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-11-12 16:15:51,924 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-11-12 16:15:51,924 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 70 flow [2024-11-12 16:15:51,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-12 16:15:51,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:51,927 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:51,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:15:51,927 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-12 16:15:51,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:51,928 INFO L85 PathProgramCache]: Analyzing trace with hash -544317764, now seen corresponding path program 1 times [2024-11-12 16:15:51,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:51,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022505564] [2024-11-12 16:15:51,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:51,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:15:52,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:52,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022505564] [2024-11-12 16:15:52,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022505564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:15:52,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733367284] [2024-11-12 16:15:52,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:52,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:15:52,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:15:52,044 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) [2024-11-12 16:15:52,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 16:15:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:52,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-12 16:15:52,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:15:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:15:52,201 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:15:52,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:15:52,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733367284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:15:52,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:15:52,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-12 16:15:52,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205932822] [2024-11-12 16:15:52,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:15:52,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 16:15:52,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:52,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 16:15:52,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-12 16:15:52,228 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-11-12 16:15:52,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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) [2024-11-12 16:15:52,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:52,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-11-12 16:15:52,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:52,327 INFO L124 PetriNetUnfolderBase]: 50/153 cut-off events. [2024-11-12 16:15:52,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:15:52,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 153 events. 50/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 561 event pairs, 49 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 276. Up to 117 conditions per place. [2024-11-12 16:15:52,331 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 17 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2024-11-12 16:15:52,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 126 flow [2024-11-12 16:15:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 16:15:52,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 16:15:52,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-11-12 16:15:52,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5229885057471264 [2024-11-12 16:15:52,335 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 70 flow. Second operand 6 states and 91 transitions. [2024-11-12 16:15:52,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 126 flow [2024-11-12 16:15:52,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 122 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 16:15:52,338 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 102 flow [2024-11-12 16:15:52,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-11-12 16:15:52,339 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-11-12 16:15:52,340 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 102 flow [2024-11-12 16:15:52,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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) [2024-11-12 16:15:52,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:52,341 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:52,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 16:15:52,541 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 [2024-11-12 16:15:52,542 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-12 16:15:52,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:52,543 INFO L85 PathProgramCache]: Analyzing trace with hash -121515482, now seen corresponding path program 2 times [2024-11-12 16:15:52,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:52,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723150635] [2024-11-12 16:15:52,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:52,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 16:15:52,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:52,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723150635] [2024-11-12 16:15:52,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723150635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:15:52,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:15:52,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 16:15:52,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495758940] [2024-11-12 16:15:52,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:15:52,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:15:52,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:52,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:15:52,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:15:52,664 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-11-12 16:15:52,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-11-12 16:15:52,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:52,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-11-12 16:15:52,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:52,729 INFO L124 PetriNetUnfolderBase]: 50/149 cut-off events. [2024-11-12 16:15:52,729 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:15:52,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 149 events. 50/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 531 event pairs, 49 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 263. Up to 120 conditions per place. [2024-11-12 16:15:52,731 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 21 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2024-11-12 16:15:52,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 142 flow [2024-11-12 16:15:52,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:15:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:15:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-11-12 16:15:52,733 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2024-11-12 16:15:52,733 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 102 flow. Second operand 3 states and 47 transitions. [2024-11-12 16:15:52,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 142 flow [2024-11-12 16:15:52,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 30 transitions, 128 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-12 16:15:52,735 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 86 flow [2024-11-12 16:15:52,735 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-11-12 16:15:52,736 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2024-11-12 16:15:52,736 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 86 flow [2024-11-12 16:15:52,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-11-12 16:15:52,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:52,738 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:52,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 16:15:52,738 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-12 16:15:52,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:52,739 INFO L85 PathProgramCache]: Analyzing trace with hash -121515481, now seen corresponding path program 1 times [2024-11-12 16:15:52,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:52,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441016130] [2024-11-12 16:15:52,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:52,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:15:52,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:52,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441016130] [2024-11-12 16:15:52,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441016130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:15:52,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259237391] [2024-11-12 16:15:52,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:52,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:15:52,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:15:52,891 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) [2024-11-12 16:15:52,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 16:15:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:52,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:15:52,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:15:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:15:53,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:15:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:15:53,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259237391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:15:53,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:15:53,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-12 16:15:53,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50709135] [2024-11-12 16:15:53,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:15:53,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 16:15:53,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:53,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 16:15:53,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-12 16:15:53,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-11-12 16:15:53,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 86 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 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) [2024-11-12 16:15:53,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:53,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-11-12 16:15:53,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:53,179 INFO L124 PetriNetUnfolderBase]: 50/155 cut-off events. [2024-11-12 16:15:53,180 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-12 16:15:53,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 155 events. 50/155 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 531 event pairs, 49 based on Foata normal form. 6/152 useless extension candidates. Maximal degree in co-relation 303. Up to 117 conditions per place. [2024-11-12 16:15:53,183 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 17 selfloop transitions, 11 changer transitions 0/36 dead transitions. [2024-11-12 16:15:53,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 178 flow [2024-11-12 16:15:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 16:15:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 16:15:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-11-12 16:15:53,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2024-11-12 16:15:53,188 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 86 flow. Second operand 12 states and 166 transitions. [2024-11-12 16:15:53,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 178 flow [2024-11-12 16:15:53,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:15:53,190 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 169 flow [2024-11-12 16:15:53,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=169, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2024-11-12 16:15:53,191 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-11-12 16:15:53,191 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 169 flow [2024-11-12 16:15:53,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 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) [2024-11-12 16:15:53,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:53,192 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:53,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 16:15:53,397 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,SelfDestructingSolverStorable3 [2024-11-12 16:15:53,398 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-12 16:15:53,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:53,399 INFO L85 PathProgramCache]: Analyzing trace with hash 504064615, now seen corresponding path program 2 times [2024-11-12 16:15:53,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:53,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196987235] [2024-11-12 16:15:53,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:53,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-12 16:15:53,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:53,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196987235] [2024-11-12 16:15:53,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196987235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:15:53,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:15:53,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:15:53,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399094238] [2024-11-12 16:15:53,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:15:53,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:15:53,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:53,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:15:53,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:15:53,605 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-11-12 16:15:53,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-11-12 16:15:53,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:53,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-11-12 16:15:53,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:53,688 INFO L124 PetriNetUnfolderBase]: 50/151 cut-off events. [2024-11-12 16:15:53,688 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-12 16:15:53,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 151 events. 50/151 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 494 event pairs, 42 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 322. Up to 99 conditions per place. [2024-11-12 16:15:53,690 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 29 selfloop transitions, 3 changer transitions 3/41 dead transitions. [2024-11-12 16:15:53,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 41 transitions, 249 flow [2024-11-12 16:15:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:15:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:15:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-12 16:15:53,691 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2024-11-12 16:15:53,692 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 169 flow. Second operand 4 states and 63 transitions. [2024-11-12 16:15:53,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 41 transitions, 249 flow [2024-11-12 16:15:53,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 41 transitions, 201 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-12 16:15:53,696 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 123 flow [2024-11-12 16:15:53,697 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2024-11-12 16:15:53,698 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-11-12 16:15:53,699 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 123 flow [2024-11-12 16:15:53,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-11-12 16:15:53,699 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:53,699 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:53,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 16:15:53,700 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-12 16:15:53,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash 504420831, now seen corresponding path program 1 times [2024-11-12 16:15:53,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:53,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999084022] [2024-11-12 16:15:53,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:53,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-12 16:15:53,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:53,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999084022] [2024-11-12 16:15:53,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999084022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:15:53,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:15:53,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:15:53,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200298986] [2024-11-12 16:15:53,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:15:53,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:15:53,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:53,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:15:53,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:15:53,855 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-12 16:15:53,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-12 16:15:53,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:53,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-12 16:15:53,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:53,925 INFO L124 PetriNetUnfolderBase]: 50/144 cut-off events. [2024-11-12 16:15:53,926 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-12 16:15:53,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 144 events. 50/144 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 482 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 301. Up to 105 conditions per place. [2024-11-12 16:15:53,927 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 33 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-12 16:15:53,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 205 flow [2024-11-12 16:15:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:15:53,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:15:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-11-12 16:15:53,929 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47413793103448276 [2024-11-12 16:15:53,929 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 123 flow. Second operand 4 states and 55 transitions. [2024-11-12 16:15:53,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 205 flow [2024-11-12 16:15:53,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 197 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 16:15:53,934 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 117 flow [2024-11-12 16:15:53,935 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2024-11-12 16:15:53,935 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-11-12 16:15:53,936 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 117 flow [2024-11-12 16:15:53,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-12 16:15:53,936 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:53,937 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:53,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 16:15:53,937 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-12 16:15:53,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:53,938 INFO L85 PathProgramCache]: Analyzing trace with hash 504420832, now seen corresponding path program 1 times [2024-11-12 16:15:53,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:53,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903329698] [2024-11-12 16:15:53,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:53,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-12 16:15:54,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:54,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903329698] [2024-11-12 16:15:54,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903329698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:15:54,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:15:54,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:15:54,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383806163] [2024-11-12 16:15:54,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:15:54,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:15:54,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:54,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:15:54,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:15:54,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-11-12 16:15:54,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-11-12 16:15:54,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:54,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-11-12 16:15:54,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:54,211 INFO L124 PetriNetUnfolderBase]: 50/135 cut-off events. [2024-11-12 16:15:54,211 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-11-12 16:15:54,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 135 events. 50/135 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 363 event pairs, 30 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 291. Up to 105 conditions per place. [2024-11-12 16:15:54,213 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 31 selfloop transitions, 2 changer transitions 2/37 dead transitions. [2024-11-12 16:15:54,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 37 transitions, 197 flow [2024-11-12 16:15:54,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:15:54,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:15:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-12 16:15:54,215 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2024-11-12 16:15:54,215 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 117 flow. Second operand 4 states and 63 transitions. [2024-11-12 16:15:54,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 37 transitions, 197 flow [2024-11-12 16:15:54,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 37 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:15:54,219 INFO L231 Difference]: Finished difference. Result has 48 places, 29 transitions, 112 flow [2024-11-12 16:15:54,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=48, PETRI_TRANSITIONS=29} [2024-11-12 16:15:54,220 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-11-12 16:15:54,220 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 29 transitions, 112 flow [2024-11-12 16:15:54,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-11-12 16:15:54,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:54,221 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:54,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 16:15:54,221 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-12 16:15:54,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:54,221 INFO L85 PathProgramCache]: Analyzing trace with hash -57555316, now seen corresponding path program 1 times [2024-11-12 16:15:54,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:54,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956324845] [2024-11-12 16:15:54,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:54,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-12 16:15:54,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:54,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956324845] [2024-11-12 16:15:54,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956324845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:15:54,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:15:54,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 16:15:54,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310847304] [2024-11-12 16:15:54,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:15:54,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:15:54,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:54,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:15:54,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:15:54,297 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-11-12 16:15:54,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 29 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-12 16:15:54,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:54,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-11-12 16:15:54,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:54,334 INFO L124 PetriNetUnfolderBase]: 43/113 cut-off events. [2024-11-12 16:15:54,334 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-12 16:15:54,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 113 events. 43/113 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 273 event pairs, 42 based on Foata normal form. 8/120 useless extension candidates. Maximal degree in co-relation 260. Up to 111 conditions per place. [2024-11-12 16:15:54,335 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-11-12 16:15:54,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 164 flow [2024-11-12 16:15:54,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:15:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:15:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-11-12 16:15:54,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-12 16:15:54,337 INFO L175 Difference]: Start difference. First operand has 48 places, 29 transitions, 112 flow. Second operand 3 states and 48 transitions. [2024-11-12 16:15:54,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 164 flow [2024-11-12 16:15:54,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 28 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:15:54,338 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-11-12 16:15:54,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-11-12 16:15:54,339 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-11-12 16:15:54,339 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-11-12 16:15:54,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-12 16:15:54,343 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2024-11-12 16:15:54,344 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-11-12 16:15:54,344 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-12 16:15:54,344 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-11-12 16:15:54,344 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2024-11-12 16:15:54,345 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2024-11-12 16:15:54,347 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-11-12 16:15:54,347 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2024-11-12 16:15:54,347 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-11-12 16:15:54,347 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-11-12 16:15:54,348 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-11-12 16:15:54,348 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-12 16:15:54,348 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-12 16:15:54,348 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-11-12 16:15:54,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 16:15:54,349 INFO L421 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2024-11-12 16:15:54,354 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-12 16:15:54,355 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 16:15:54,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:15:54 BasicIcfg [2024-11-12 16:15:54,364 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 16:15:54,365 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 16:15:54,365 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 16:15:54,365 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 16:15:54,365 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:15:51" (3/4) ... [2024-11-12 16:15:54,367 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-12 16:15:54,370 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-12 16:15:54,377 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2024-11-12 16:15:54,378 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-12 16:15:54,378 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-12 16:15:54,472 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 16:15:54,472 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-12 16:15:54,473 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 16:15:54,473 INFO L158 Benchmark]: Toolchain (without parser) took 5004.41ms. Allocated memory was 161.5MB in the beginning and 201.3MB in the end (delta: 39.8MB). Free memory was 133.6MB in the beginning and 141.5MB in the end (delta: -7.9MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2024-11-12 16:15:54,473 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 16:15:54,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 710.67ms. Allocated memory is still 161.5MB. Free memory was 133.4MB in the beginning and 101.4MB in the end (delta: 32.1MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2024-11-12 16:15:54,474 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.06ms. Allocated memory is still 161.5MB. Free memory was 101.4MB in the beginning and 99.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 16:15:54,474 INFO L158 Benchmark]: Boogie Preprocessor took 72.02ms. Allocated memory is still 161.5MB. Free memory was 99.3MB in the beginning and 96.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 16:15:54,474 INFO L158 Benchmark]: RCFGBuilder took 911.35ms. Allocated memory is still 161.5MB. Free memory was 96.1MB in the beginning and 82.3MB in the end (delta: 13.8MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-11-12 16:15:54,474 INFO L158 Benchmark]: TraceAbstraction took 3123.72ms. Allocated memory was 161.5MB in the beginning and 201.3MB in the end (delta: 39.8MB). Free memory was 82.3MB in the beginning and 146.8MB in the end (delta: -64.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 16:15:54,475 INFO L158 Benchmark]: Witness Printer took 108.07ms. Allocated memory is still 201.3MB. Free memory was 146.8MB in the beginning and 141.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-12 16:15:54,477 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 710.67ms. Allocated memory is still 161.5MB. Free memory was 133.4MB in the beginning and 101.4MB in the end (delta: 32.1MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.06ms. Allocated memory is still 161.5MB. Free memory was 101.4MB in the beginning and 99.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.02ms. Allocated memory is still 161.5MB. Free memory was 99.3MB in the beginning and 96.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 911.35ms. Allocated memory is still 161.5MB. Free memory was 96.1MB in the beginning and 82.3MB in the end (delta: 13.8MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3123.72ms. Allocated memory was 161.5MB in the beginning and 201.3MB in the end (delta: 39.8MB). Free memory was 82.3MB in the beginning and 146.8MB in the end (delta: -64.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 108.07ms. Allocated memory is still 201.3MB. Free memory was 146.8MB in the beginning and 141.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: 936]: 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, 42 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 212 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 155 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 373 IncrementalHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 12 mSDtfsCounter, 373 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=4, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 806 SizeOfPredicates, 0 NumberOfNonLiveVariables, 365 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 230/263 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-12 16:15:54,509 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