./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:44:13,098 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:44:13,183 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:44:13,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:44:13,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:44:13,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:44:13,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:44:13,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:44:13,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:44:13,230 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:44:13,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:44:13,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:44:13,231 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:44:13,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:44:13,231 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:44:13,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:44:13,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:44:13,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:44:13,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:44:13,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:44:13,234 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:44:13,235 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:44:13,235 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:44:13,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:44:13,236 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:44:13,236 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:44:13,236 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:44:13,237 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:44:13,241 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:44:13,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:44:13,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:44:13,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:44:13,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:44:13,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:44:13,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:44:13,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:44:13,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:44:13,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:44:13,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:44:13,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:44:13,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:44:13,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:44:13,246 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2024-10-11 19:44:13,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:44:13,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:44:13,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:44:13,523 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:44:13,524 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:44:13,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-10-11 19:44:15,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:44:15,277 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:44:15,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-10-11 19:44:15,295 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b870b3943/dc64350bbcab43959857d1ed56f2b975/FLAG9646c7380 [2024-10-11 19:44:15,597 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b870b3943/dc64350bbcab43959857d1ed56f2b975 [2024-10-11 19:44:15,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:44:15,601 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:44:15,603 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:44:15,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:44:15,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:44:15,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:44:15" (1/1) ... [2024-10-11 19:44:15,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@124764fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:15, skipping insertion in model container [2024-10-11 19:44:15,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:44:15" (1/1) ... [2024-10-11 19:44:15,661 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:44:16,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:44:16,079 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:44:16,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:44:16,179 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:44:16,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16 WrapperNode [2024-10-11 19:44:16,179 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:44:16,180 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:44:16,180 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:44:16,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:44:16,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16" (1/1) ... [2024-10-11 19:44:16,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16" (1/1) ... [2024-10-11 19:44:16,237 INFO L138 Inliner]: procedures = 264, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2024-10-11 19:44:16,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:44:16,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:44:16,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:44:16,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:44:16,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16" (1/1) ... [2024-10-11 19:44:16,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16" (1/1) ... [2024-10-11 19:44:16,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16" (1/1) ... [2024-10-11 19:44:16,275 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2024-10-11 19:44:16,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16" (1/1) ... [2024-10-11 19:44:16,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16" (1/1) ... [2024-10-11 19:44:16,302 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16" (1/1) ... [2024-10-11 19:44:16,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16" (1/1) ... [2024-10-11 19:44:16,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16" (1/1) ... [2024-10-11 19:44:16,308 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16" (1/1) ... [2024-10-11 19:44:16,310 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:44:16,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:44:16,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:44:16,311 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:44:16,312 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16" (1/1) ... [2024-10-11 19:44:16,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:44:16,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:44:16,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:44:16,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:44:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 19:44:16,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 19:44:16,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 19:44:16,406 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 19:44:16,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:44:16,407 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 19:44:16,407 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 19:44:16,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:44:16,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:44:16,409 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:44:16,578 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:44:16,581 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:44:16,807 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:44:16,807 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:44:16,933 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:44:16,933 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 19:44:16,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:44:16 BoogieIcfgContainer [2024-10-11 19:44:16,934 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:44:16,936 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:44:16,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:44:16,940 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:44:16,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:44:15" (1/3) ... [2024-10-11 19:44:16,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ea489d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:44:16, skipping insertion in model container [2024-10-11 19:44:16,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:16" (2/3) ... [2024-10-11 19:44:16,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ea489d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:44:16, skipping insertion in model container [2024-10-11 19:44:16,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:44:16" (3/3) ... [2024-10-11 19:44:16,944 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2024-10-11 19:44:16,962 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:44:16,962 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-10-11 19:44:16,962 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:44:17,007 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:44:17,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 62 flow [2024-10-11 19:44:17,074 INFO L124 PetriNetUnfolderBase]: 1/28 cut-off events. [2024-10-11 19:44:17,074 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:44:17,077 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 52 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. [2024-10-11 19:44:17,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 62 flow [2024-10-11 19:44:17,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 28 transitions, 59 flow [2024-10-11 19:44:17,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:44:17,096 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;@255bf8fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:44:17,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-11 19:44:17,104 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:44:17,104 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-10-11 19:44:17,105 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:44:17,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:17,106 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:17,106 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:44:17,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash 234004041, now seen corresponding path program 1 times [2024-10-11 19:44:17,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:17,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565857520] [2024-10-11 19:44:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:17,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:17,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:17,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565857520] [2024-10-11 19:44:17,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565857520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:17,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:17,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:44:17,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660995635] [2024-10-11 19:44:17,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:17,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:44:17,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:17,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:44:17,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:44:17,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-10-11 19:44:17,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) 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) [2024-10-11 19:44:17,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:17,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-10-11 19:44:17,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:17,505 INFO L124 PetriNetUnfolderBase]: 43/138 cut-off events. [2024-10-11 19:44:17,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:44:17,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 138 events. 43/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 533 event pairs, 42 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 230. Up to 102 conditions per place. [2024-10-11 19:44:17,510 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 16 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-10-11 19:44:17,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 97 flow [2024-10-11 19:44:17,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:44:17,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:44:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-10-11 19:44:17,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.632183908045977 [2024-10-11 19:44:17,525 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 59 flow. Second operand 3 states and 55 transitions. [2024-10-11 19:44:17,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 97 flow [2024-10-11 19:44:17,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:44:17,531 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 70 flow [2024-10-11 19:44:17,533 INFO L260 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} [2024-10-11 19:44:17,538 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-10-11 19:44:17,538 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 70 flow [2024-10-11 19:44:17,539 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) [2024-10-11 19:44:17,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:17,540 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:17,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:44:17,540 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)] === [2024-10-11 19:44:17,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:17,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1363320345, now seen corresponding path program 1 times [2024-10-11 19:44:17,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:17,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960544370] [2024-10-11 19:44:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:17,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:17,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960544370] [2024-10-11 19:44:17,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960544370] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:44:17,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505894951] [2024-10-11 19:44:17,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:17,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:44:17,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:44:17,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:44:17,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:44:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:17,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:44:17,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:17,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:44:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:17,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505894951] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:44:17,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:44:17,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-11 19:44:17,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033699410] [2024-10-11 19:44:17,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:44:17,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:44:17,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:17,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:44:17,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:44:17,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-10-11 19:44:17,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 70 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:17,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:17,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-10-11 19:44:17,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:17,870 INFO L124 PetriNetUnfolderBase]: 43/141 cut-off events. [2024-10-11 19:44:17,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:44:17,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 141 events. 43/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 533 event pairs, 42 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 249. Up to 102 conditions per place. [2024-10-11 19:44:17,878 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 16 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2024-10-11 19:44:17,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 124 flow [2024-10-11 19:44:17,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:44:17,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:44:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-10-11 19:44:17,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-10-11 19:44:17,882 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 70 flow. Second operand 6 states and 96 transitions. [2024-10-11 19:44:17,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 124 flow [2024-10-11 19:44:17,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 120 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:44:17,886 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 102 flow [2024-10-11 19:44:17,886 INFO L260 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} [2024-10-11 19:44:17,887 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-10-11 19:44:17,888 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 102 flow [2024-10-11 19:44:17,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:17,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:17,888 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:17,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 19:44:18,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:44:18,090 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)] === [2024-10-11 19:44:18,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:18,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1641812553, now seen corresponding path program 2 times [2024-10-11 19:44:18,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:18,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168252163] [2024-10-11 19:44:18,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:18,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:18,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:18,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168252163] [2024-10-11 19:44:18,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168252163] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:44:18,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392015343] [2024-10-11 19:44:18,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:44:18,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:44:18,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:44:18,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:44:18,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 19:44:18,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 19:44:18,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:44:18,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:44:18,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 19:44:18,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:18,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392015343] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:18,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 19:44:18,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2024-10-11 19:44:18,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174335962] [2024-10-11 19:44:18,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:18,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:44:18,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:18,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:44:18,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-11 19:44:18,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-11 19:44:18,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:18,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:18,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-11 19:44:18,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:18,471 INFO L124 PetriNetUnfolderBase]: 43/129 cut-off events. [2024-10-11 19:44:18,471 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:44:18,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 129 events. 43/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 432 event pairs, 42 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 228. Up to 105 conditions per place. [2024-10-11 19:44:18,474 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 20 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2024-10-11 19:44:18,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 136 flow [2024-10-11 19:44:18,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:44:18,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:44:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-10-11 19:44:18,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-10-11 19:44:18,476 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 102 flow. Second operand 3 states and 45 transitions. [2024-10-11 19:44:18,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 136 flow [2024-10-11 19:44:18,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 122 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 19:44:18,477 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 82 flow [2024-10-11 19:44:18,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2024-10-11 19:44:18,481 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-10-11 19:44:18,481 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 82 flow [2024-10-11 19:44:18,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:18,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:18,482 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:18,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 19:44:18,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:44:18,683 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)] === [2024-10-11 19:44:18,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:18,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1641812554, now seen corresponding path program 1 times [2024-10-11 19:44:18,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:18,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586542055] [2024-10-11 19:44:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:18,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:18,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:18,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586542055] [2024-10-11 19:44:18,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586542055] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:44:18,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954493285] [2024-10-11 19:44:18,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:18,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:44:18,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:44:18,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:44:18,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 19:44:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:18,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:44:18,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:18,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:44:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:19,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954493285] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:44:19,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:44:19,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-11 19:44:19,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002015781] [2024-10-11 19:44:19,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:44:19,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:44:19,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:19,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:44:19,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:44:19,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-10-11 19:44:19,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 82 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:19,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:19,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-10-11 19:44:19,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:19,158 INFO L124 PetriNetUnfolderBase]: 43/135 cut-off events. [2024-10-11 19:44:19,160 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-10-11 19:44:19,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 135 events. 43/135 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 432 event pairs, 42 based on Foata normal form. 6/140 useless extension candidates. Maximal degree in co-relation 268. Up to 102 conditions per place. [2024-10-11 19:44:19,162 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 16 selfloop transitions, 11 changer transitions 0/34 dead transitions. [2024-10-11 19:44:19,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 34 transitions, 172 flow [2024-10-11 19:44:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 19:44:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 19:44:19,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-10-11 19:44:19,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2024-10-11 19:44:19,166 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 82 flow. Second operand 12 states and 177 transitions. [2024-10-11 19:44:19,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 34 transitions, 172 flow [2024-10-11 19:44:19,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 34 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:44:19,170 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 165 flow [2024-10-11 19:44:19,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=165, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2024-10-11 19:44:19,171 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-10-11 19:44:19,172 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 165 flow [2024-10-11 19:44:19,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:19,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:19,172 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:19,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 19:44:19,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:44:19,374 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)] === [2024-10-11 19:44:19,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:19,374 INFO L85 PathProgramCache]: Analyzing trace with hash -883851190, now seen corresponding path program 2 times [2024-10-11 19:44:19,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:19,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455889691] [2024-10-11 19:44:19,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:19,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-11 19:44:19,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:19,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455889691] [2024-10-11 19:44:19,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455889691] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:19,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:19,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:44:19,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456156010] [2024-10-11 19:44:19,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:19,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:44:19,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:19,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:44:19,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:44:19,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-10-11 19:44:19,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:19,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:19,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-10-11 19:44:19,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:19,732 INFO L124 PetriNetUnfolderBase]: 43/131 cut-off events. [2024-10-11 19:44:19,732 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-11 19:44:19,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 131 events. 43/131 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 397 event pairs, 36 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 287. Up to 86 conditions per place. [2024-10-11 19:44:19,733 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 3 changer transitions 3/38 dead transitions. [2024-10-11 19:44:19,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 38 transitions, 239 flow [2024-10-11 19:44:19,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:44:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:44:19,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-10-11 19:44:19,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5603448275862069 [2024-10-11 19:44:19,735 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 165 flow. Second operand 4 states and 65 transitions. [2024-10-11 19:44:19,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 38 transitions, 239 flow [2024-10-11 19:44:19,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 38 transitions, 191 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-10-11 19:44:19,741 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 119 flow [2024-10-11 19:44:19,742 INFO L260 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2024-10-11 19:44:19,742 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-10-11 19:44:19,743 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 119 flow [2024-10-11 19:44:19,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:19,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:19,744 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:19,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:44:19,744 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:44:19,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash -883018780, now seen corresponding path program 1 times [2024-10-11 19:44:19,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:19,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933013160] [2024-10-11 19:44:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:19,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-11 19:44:19,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:19,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933013160] [2024-10-11 19:44:19,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933013160] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:19,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:19,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:44:19,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691182348] [2024-10-11 19:44:19,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:19,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:44:19,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:19,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:44:19,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:44:19,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-10-11 19:44:19,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:19,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:19,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-10-11 19:44:19,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:20,026 INFO L124 PetriNetUnfolderBase]: 43/121 cut-off events. [2024-10-11 19:44:20,027 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-10-11 19:44:20,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 121 events. 43/121 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 349 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 262. Up to 90 conditions per place. [2024-10-11 19:44:20,028 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 30 selfloop transitions, 2 changer transitions 2/37 dead transitions. [2024-10-11 19:44:20,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 37 transitions, 199 flow [2024-10-11 19:44:20,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:44:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:44:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-10-11 19:44:20,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-10-11 19:44:20,030 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 119 flow. Second operand 4 states and 66 transitions. [2024-10-11 19:44:20,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 37 transitions, 199 flow [2024-10-11 19:44:20,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 191 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:44:20,035 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 111 flow [2024-10-11 19:44:20,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=44, 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=111, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2024-10-11 19:44:20,036 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-10-11 19:44:20,036 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 111 flow [2024-10-11 19:44:20,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:20,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:20,036 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:20,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 19:44:20,036 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:44:20,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:20,037 INFO L85 PathProgramCache]: Analyzing trace with hash -888258599, now seen corresponding path program 1 times [2024-10-11 19:44:20,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:20,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100065493] [2024-10-11 19:44:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:20,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-11 19:44:20,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:20,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100065493] [2024-10-11 19:44:20,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100065493] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:20,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:20,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:44:20,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573446598] [2024-10-11 19:44:20,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:20,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:44:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:44:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:44:20,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-10-11 19:44:20,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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) [2024-10-11 19:44:20,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:20,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-10-11 19:44:20,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:20,140 INFO L124 PetriNetUnfolderBase]: 37/104 cut-off events. [2024-10-11 19:44:20,141 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-10-11 19:44:20,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 104 events. 37/104 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 255 event pairs, 36 based on Foata normal form. 7/110 useless extension candidates. Maximal degree in co-relation 231. Up to 98 conditions per place. [2024-10-11 19:44:20,141 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-10-11 19:44:20,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 28 transitions, 161 flow [2024-10-11 19:44:20,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:44:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:44:20,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-10-11 19:44:20,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-10-11 19:44:20,143 INFO L175 Difference]: Start difference. First operand has 47 places, 29 transitions, 111 flow. Second operand 3 states and 50 transitions. [2024-10-11 19:44:20,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 28 transitions, 161 flow [2024-10-11 19:44:20,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 28 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:44:20,146 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-10-11 19:44:20,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, 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=45, PETRI_TRANSITIONS=0} [2024-10-11 19:44:20,146 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-10-11 19:44:20,147 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-10-11 19:44:20,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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) [2024-10-11 19:44:20,149 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2024-10-11 19:44:20,150 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-10-11 19:44:20,150 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-10-11 19:44:20,150 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-10-11 19:44:20,150 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2024-10-11 19:44:20,150 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2024-10-11 19:44:20,150 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-10-11 19:44:20,151 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2024-10-11 19:44:20,151 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-10-11 19:44:20,151 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-10-11 19:44:20,151 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-10-11 19:44:20,153 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-10-11 19:44:20,153 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-10-11 19:44:20,153 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-10-11 19:44:20,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 19:44:20,154 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-10-11 19:44:20,163 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 19:44:20,164 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 19:44:20,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 07:44:20 BasicIcfg [2024-10-11 19:44:20,171 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 19:44:20,171 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 19:44:20,172 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 19:44:20,172 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 19:44:20,172 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:44:16" (3/4) ... [2024-10-11 19:44:20,174 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 19:44:20,177 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-11 19:44:20,180 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2024-10-11 19:44:20,181 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-11 19:44:20,181 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-11 19:44:20,261 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 19:44:20,262 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 19:44:20,262 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 19:44:20,262 INFO L158 Benchmark]: Toolchain (without parser) took 4661.02ms. Allocated memory was 151.0MB in the beginning and 226.5MB in the end (delta: 75.5MB). Free memory was 94.8MB in the beginning and 172.7MB in the end (delta: -77.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:44:20,263 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 111.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:44:20,263 INFO L158 Benchmark]: CACSL2BoogieTranslator took 576.69ms. Allocated memory is still 151.0MB. Free memory was 94.8MB in the beginning and 64.6MB in the end (delta: 30.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-10-11 19:44:20,263 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.78ms. Allocated memory is still 151.0MB. Free memory was 64.2MB in the beginning and 119.8MB in the end (delta: -55.6MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2024-10-11 19:44:20,263 INFO L158 Benchmark]: Boogie Preprocessor took 69.79ms. Allocated memory was 151.0MB in the beginning and 226.5MB in the end (delta: 75.5MB). Free memory was 119.8MB in the beginning and 197.0MB in the end (delta: -77.3MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2024-10-11 19:44:20,264 INFO L158 Benchmark]: RCFGBuilder took 623.19ms. Allocated memory is still 226.5MB. Free memory was 197.0MB in the beginning and 170.8MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-11 19:44:20,264 INFO L158 Benchmark]: TraceAbstraction took 3234.59ms. Allocated memory is still 226.5MB. Free memory was 170.8MB in the beginning and 176.9MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:44:20,264 INFO L158 Benchmark]: Witness Printer took 90.35ms. Allocated memory is still 226.5MB. Free memory was 176.9MB in the beginning and 172.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 19:44:20,266 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 111.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 576.69ms. Allocated memory is still 151.0MB. Free memory was 94.8MB in the beginning and 64.6MB in the end (delta: 30.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.78ms. Allocated memory is still 151.0MB. Free memory was 64.2MB in the beginning and 119.8MB in the end (delta: -55.6MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.79ms. Allocated memory was 151.0MB in the beginning and 226.5MB in the end (delta: 75.5MB). Free memory was 119.8MB in the beginning and 197.0MB in the end (delta: -77.3MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * RCFGBuilder took 623.19ms. Allocated memory is still 226.5MB. Free memory was 197.0MB in the beginning and 170.8MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3234.59ms. Allocated memory is still 226.5MB. Free memory was 170.8MB in the beginning and 176.9MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 90.35ms. Allocated memory is still 226.5MB. Free memory was 176.9MB in the beginning and 172.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -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: 935]: 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: 3.1s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 164 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 114 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 324 IncrementalHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 0 mSDtfsCounter, 324 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=4, InterpolantAutomatonStates: 35, 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, 122 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 176 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 175/218 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! [2024-10-11 19:44:20,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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