./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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_23-idxsense_nr.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 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:05:48,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:05:48,196 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:05:48,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:05:48,201 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:05:48,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:05:48,236 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:05:48,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:05:48,237 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:05:48,238 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:05:48,239 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:05:48,239 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:05:48,240 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:05:48,240 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:05:48,242 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:05:48,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:05:48,243 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:05:48,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:05:48,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:05:48,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:05:48,248 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:05:48,249 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:05:48,249 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:05:48,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:05:48,250 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:05:48,250 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:05:48,250 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:05:48,250 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:05:48,250 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:05:48,251 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:05:48,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:05:48,251 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:05:48,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:05:48,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:05:48,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:05:48,253 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:05:48,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:05:48,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:05:48,255 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:05:48,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:05:48,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:05:48,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:05:48,256 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 [2024-11-10 18:05:48,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:05:48,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:05:48,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:05:48,588 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:05:48,588 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:05:48,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2024-11-10 18:05:50,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:05:50,524 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:05:50,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2024-11-10 18:05:50,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d56cecf6d/297124fb1ed04832a0e2181b731af1c2/FLAG848769466 [2024-11-10 18:05:50,768 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d56cecf6d/297124fb1ed04832a0e2181b731af1c2 [2024-11-10 18:05:50,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:05:50,772 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:05:50,773 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:05:50,773 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:05:50,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:05:50,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:05:50" (1/1) ... [2024-11-10 18:05:50,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62bbe2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:50, skipping insertion in model container [2024-11-10 18:05:50,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:05:50" (1/1) ... [2024-11-10 18:05:50,828 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:05:51,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:05:51,254 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:05:51,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:05:51,342 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:05:51,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51 WrapperNode [2024-11-10 18:05:51,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:05:51,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:05:51,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:05:51,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:05:51,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51" (1/1) ... [2024-11-10 18:05:51,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51" (1/1) ... [2024-11-10 18:05:51,398 INFO L138 Inliner]: procedures = 162, calls = 77, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 108 [2024-11-10 18:05:51,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:05:51,402 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:05:51,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:05:51,403 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:05:51,414 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51" (1/1) ... [2024-11-10 18:05:51,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51" (1/1) ... [2024-11-10 18:05:51,419 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51" (1/1) ... [2024-11-10 18:05:51,448 INFO L175 MemorySlicer]: Split 66 memory accesses to 2 slices as follows [16, 50]. 76 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [10, 50]. The 3 writes are split as follows [3, 0]. [2024-11-10 18:05:51,448 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51" (1/1) ... [2024-11-10 18:05:51,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51" (1/1) ... [2024-11-10 18:05:51,455 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51" (1/1) ... [2024-11-10 18:05:51,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51" (1/1) ... [2024-11-10 18:05:51,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51" (1/1) ... [2024-11-10 18:05:51,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51" (1/1) ... [2024-11-10 18:05:51,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:05:51,464 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:05:51,464 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:05:51,464 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:05:51,465 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51" (1/1) ... [2024-11-10 18:05:51,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:05:51,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:05:51,522 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) [2024-11-10 18:05:51,528 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 [2024-11-10 18:05:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:05:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:05:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:05:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:05:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:05:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:05:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 18:05:51,572 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 18:05:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:05:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:05:51,573 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:05:51,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:05:51,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:05:51,574 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:05:51,698 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:05:51,700 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:05:51,990 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:05:51,991 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:05:52,413 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:05:52,413 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:05:52,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:05:52 BoogieIcfgContainer [2024-11-10 18:05:52,414 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:05:52,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:05:52,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:05:52,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:05:52,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:05:50" (1/3) ... [2024-11-10 18:05:52,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d952fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:05:52, skipping insertion in model container [2024-11-10 18:05:52,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:05:51" (2/3) ... [2024-11-10 18:05:52,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d952fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:05:52, skipping insertion in model container [2024-11-10 18:05:52,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:05:52" (3/3) ... [2024-11-10 18:05:52,443 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_23-idxsense_nr.i [2024-11-10 18:05:52,503 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:05:52,507 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-11-10 18:05:52,507 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:05:52,557 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 18:05:52,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 88 flow [2024-11-10 18:05:52,632 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2024-11-10 18:05:52,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:05:52,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 41 events. 2/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 59 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 6. Up to 2 conditions per place. [2024-11-10 18:05:52,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 42 transitions, 88 flow [2024-11-10 18:05:52,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 41 transitions, 85 flow [2024-11-10 18:05:52,652 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:05:52,662 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;@43edd9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:05:52,662 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-10 18:05:52,669 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:05:52,669 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2024-11-10 18:05:52,670 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:05:52,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:52,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:52,672 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:52,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:52,679 INFO L85 PathProgramCache]: Analyzing trace with hash -156963317, now seen corresponding path program 1 times [2024-11-10 18:05:52,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:52,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186069810] [2024-11-10 18:05:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:52,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:52,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:52,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186069810] [2024-11-10 18:05:52,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186069810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:05:52,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:05:52,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:05:52,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587340697] [2024-11-10 18:05:52,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:05:52,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:05:52,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:05:53,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:05:53,010 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-11-10 18:05:53,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 85 flow. Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 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) [2024-11-10 18:05:53,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:53,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-11-10 18:05:53,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:53,147 INFO L124 PetriNetUnfolderBase]: 56/189 cut-off events. [2024-11-10 18:05:53,147 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:05:53,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 189 events. 56/189 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 749 event pairs, 55 based on Foata normal form. 1/169 useless extension candidates. Maximal degree in co-relation 309. Up to 131 conditions per place. [2024-11-10 18:05:53,152 INFO L140 encePairwiseOnDemand]: 41/42 looper letters, 20 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2024-11-10 18:05:53,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 123 flow [2024-11-10 18:05:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:05:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:05:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2024-11-10 18:05:53,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-10 18:05:53,170 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 85 flow. Second operand 2 states and 63 transitions. [2024-11-10 18:05:53,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 123 flow [2024-11-10 18:05:53,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:05:53,178 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 82 flow [2024-11-10 18:05:53,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2024-11-10 18:05:53,187 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-11-10 18:05:53,187 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 82 flow [2024-11-10 18:05:53,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 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) [2024-11-10 18:05:53,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:53,188 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:53,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:05:53,188 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:53,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:53,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1880175179, now seen corresponding path program 1 times [2024-11-10 18:05:53,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:53,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841021715] [2024-11-10 18:05:53,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:53,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:53,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:53,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841021715] [2024-11-10 18:05:53,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841021715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:05:53,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:05:53,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:05:53,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216982421] [2024-11-10 18:05:53,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:05:53,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:05:53,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:53,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:05:53,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:05:53,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-11-10 18:05:53,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-10 18:05:53,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:53,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-11-10 18:05:53,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:53,434 INFO L124 PetriNetUnfolderBase]: 56/191 cut-off events. [2024-11-10 18:05:53,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:05:53,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 191 events. 56/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 750 event pairs, 55 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 325. Up to 132 conditions per place. [2024-11-10 18:05:53,437 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 20 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2024-11-10 18:05:53,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 128 flow [2024-11-10 18:05:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:05:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:05:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-10 18:05:53,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6587301587301587 [2024-11-10 18:05:53,441 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 82 flow. Second operand 3 states and 83 transitions. [2024-11-10 18:05:53,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 128 flow [2024-11-10 18:05:53,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:05:53,444 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 94 flow [2024-11-10 18:05:53,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-11-10 18:05:53,445 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-11-10 18:05:53,445 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 94 flow [2024-11-10 18:05:53,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-10 18:05:53,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:53,446 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:53,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:05:53,450 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:53,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:53,451 INFO L85 PathProgramCache]: Analyzing trace with hash -585555627, now seen corresponding path program 1 times [2024-11-10 18:05:53,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:53,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777334965] [2024-11-10 18:05:53,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:53,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:53,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:53,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777334965] [2024-11-10 18:05:53,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777334965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:05:53,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556328880] [2024-11-10 18:05:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:53,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:53,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:05:53,599 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) [2024-11-10 18:05:53,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:05:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:53,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:05:53,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:05:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:53,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:05:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:53,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556328880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:05:53,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:05:53,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-10 18:05:53,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480675371] [2024-11-10 18:05:53,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:05:53,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:05:53,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:05:53,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:05:53,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-11-10 18:05:53,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 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) [2024-11-10 18:05:53,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:53,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-11-10 18:05:53,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:53,920 INFO L124 PetriNetUnfolderBase]: 56/197 cut-off events. [2024-11-10 18:05:53,923 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-10 18:05:53,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 197 events. 56/197 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 753 event pairs, 55 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 342. Up to 132 conditions per place. [2024-11-10 18:05:53,927 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 20 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2024-11-10 18:05:53,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 156 flow [2024-11-10 18:05:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:05:53,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:05:53,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-11-10 18:05:53,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5873015873015873 [2024-11-10 18:05:53,930 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 94 flow. Second operand 6 states and 148 transitions. [2024-11-10 18:05:53,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 156 flow [2024-11-10 18:05:53,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:05:53,932 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 128 flow [2024-11-10 18:05:53,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-11-10 18:05:53,936 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-11-10 18:05:53,937 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 128 flow [2024-11-10 18:05:53,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 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) [2024-11-10 18:05:53,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:53,938 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:53,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 18:05:54,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:54,140 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:54,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:54,141 INFO L85 PathProgramCache]: Analyzing trace with hash 805162867, now seen corresponding path program 2 times [2024-11-10 18:05:54,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:54,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992798214] [2024-11-10 18:05:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:54,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:54,311 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:54,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:54,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992798214] [2024-11-10 18:05:54,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992798214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:05:54,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214902115] [2024-11-10 18:05:54,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:05:54,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:54,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:05:54,317 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) [2024-11-10 18:05:54,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:05:54,430 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 18:05:54,431 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:05:54,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 18:05:54,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:05:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 18:05:54,559 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:05:54,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214902115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:05:54,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 18:05:54,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2024-11-10 18:05:54,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054136255] [2024-11-10 18:05:54,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:05:54,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:05:54,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:54,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:05:54,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 18:05:54,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-11-10 18:05:54,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-11-10 18:05:54,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:54,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-11-10 18:05:54,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:54,677 INFO L124 PetriNetUnfolderBase]: 56/179 cut-off events. [2024-11-10 18:05:54,678 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-10 18:05:54,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 179 events. 56/179 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 613 event pairs, 55 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 334. Up to 134 conditions per place. [2024-11-10 18:05:54,681 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 23 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2024-11-10 18:05:54,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 164 flow [2024-11-10 18:05:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:05:54,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:05:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-10 18:05:54,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-11-10 18:05:54,683 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 128 flow. Second operand 3 states and 71 transitions. [2024-11-10 18:05:54,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 164 flow [2024-11-10 18:05:54,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 156 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-10 18:05:54,685 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 110 flow [2024-11-10 18:05:54,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-11-10 18:05:54,689 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-11-10 18:05:54,689 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 110 flow [2024-11-10 18:05:54,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-11-10 18:05:54,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:54,690 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:54,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 18:05:54,890 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 [2024-11-10 18:05:54,891 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:54,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:54,892 INFO L85 PathProgramCache]: Analyzing trace with hash 805162868, now seen corresponding path program 1 times [2024-11-10 18:05:54,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:54,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7655608] [2024-11-10 18:05:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:54,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:55,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:55,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7655608] [2024-11-10 18:05:55,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7655608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:05:55,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825633937] [2024-11-10 18:05:55,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:55,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:55,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:05:55,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:05:55,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:05:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:55,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 18:05:55,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:05:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:55,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:05:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:05:55,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825633937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:05:55,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:05:55,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-10 18:05:55,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056240079] [2024-11-10 18:05:55,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:05:55,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 18:05:55,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 18:05:55,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-10 18:05:55,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-11-10 18:05:55,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 110 flow. Second operand has 13 states, 13 states have (on average 21.307692307692307) internal successors, (277), 13 states have internal predecessors, (277), 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) [2024-11-10 18:05:55,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:55,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-11-10 18:05:55,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:55,410 INFO L124 PetriNetUnfolderBase]: 56/191 cut-off events. [2024-11-10 18:05:55,410 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-11-10 18:05:55,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 191 events. 56/191 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 612 event pairs, 55 based on Foata normal form. 6/194 useless extension candidates. Maximal degree in co-relation 362. Up to 132 conditions per place. [2024-11-10 18:05:55,415 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 20 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2024-11-10 18:05:55,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 44 transitions, 208 flow [2024-11-10 18:05:55,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 18:05:55,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 18:05:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 277 transitions. [2024-11-10 18:05:55,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5496031746031746 [2024-11-10 18:05:55,418 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 110 flow. Second operand 12 states and 277 transitions. [2024-11-10 18:05:55,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 44 transitions, 208 flow [2024-11-10 18:05:55,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 44 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:05:55,422 INFO L231 Difference]: Finished difference. Result has 64 places, 44 transitions, 193 flow [2024-11-10 18:05:55,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=193, PETRI_PLACES=64, PETRI_TRANSITIONS=44} [2024-11-10 18:05:55,423 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-11-10 18:05:55,423 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 44 transitions, 193 flow [2024-11-10 18:05:55,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 21.307692307692307) internal successors, (277), 13 states have internal predecessors, (277), 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) [2024-11-10 18:05:55,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:55,424 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:55,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 18:05:55,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:05:55,625 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:55,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:55,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1781702608, now seen corresponding path program 2 times [2024-11-10 18:05:55,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:55,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504952794] [2024-11-10 18:05:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:55,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:55,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:55,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504952794] [2024-11-10 18:05:55,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504952794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:05:55,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:05:55,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:05:55,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839538764] [2024-11-10 18:05:55,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:05:55,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:05:55,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:55,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:05:55,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:05:55,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-11-10 18:05:55,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 44 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-11-10 18:05:55,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:55,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-11-10 18:05:55,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:55,965 INFO L124 PetriNetUnfolderBase]: 56/173 cut-off events. [2024-11-10 18:05:55,965 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-11-10 18:05:55,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 173 events. 56/173 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 492 event pairs, 55 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 367. Up to 140 conditions per place. [2024-11-10 18:05:55,967 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 28 selfloop transitions, 1 changer transitions 1/38 dead transitions. [2024-11-10 18:05:55,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 38 transitions, 241 flow [2024-11-10 18:05:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:05:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:05:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-10 18:05:55,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-11-10 18:05:55,969 INFO L175 Difference]: Start difference. First operand has 64 places, 44 transitions, 193 flow. Second operand 3 states and 71 transitions. [2024-11-10 18:05:55,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 38 transitions, 241 flow [2024-11-10 18:05:55,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 38 transitions, 205 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-10 18:05:55,974 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 145 flow [2024-11-10 18:05:55,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2024-11-10 18:05:55,975 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-11-10 18:05:55,975 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 145 flow [2024-11-10 18:05:55,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-11-10 18:05:55,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:05:55,975 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:05:55,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:05:55,976 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-10 18:05:55,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:05:55,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1824470860, now seen corresponding path program 1 times [2024-11-10 18:05:55,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:05:55,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066738755] [2024-11-10 18:05:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:05:55,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:05:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:05:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:05:56,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:05:56,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066738755] [2024-11-10 18:05:56,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066738755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:05:56,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:05:56,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:05:56,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481220210] [2024-11-10 18:05:56,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:05:56,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:05:56,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:05:56,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:05:56,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:05:56,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-11-10 18:05:56,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:56,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:05:56,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-11-10 18:05:56,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:05:56,115 INFO L124 PetriNetUnfolderBase]: 51/156 cut-off events. [2024-11-10 18:05:56,116 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-10 18:05:56,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 156 events. 51/156 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 424 event pairs, 50 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 322. Up to 129 conditions per place. [2024-11-10 18:05:56,117 INFO L140 encePairwiseOnDemand]: 40/42 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2024-11-10 18:05:56,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 36 transitions, 201 flow [2024-11-10 18:05:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:05:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:05:56,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-10 18:05:56,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-11-10 18:05:56,120 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 145 flow. Second operand 3 states and 80 transitions. [2024-11-10 18:05:56,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 36 transitions, 201 flow [2024-11-10 18:05:56,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 36 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:05:56,125 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-11-10 18:05:56,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-11-10 18:05:56,127 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-11-10 18:05:56,127 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-11-10 18:05:56,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:05:56,131 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2024-11-10 18:05:56,132 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2024-11-10 18:05:56,132 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2024-11-10 18:05:56,132 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2024-11-10 18:05:56,132 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2024-11-10 18:05:56,133 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2024-11-10 18:05:56,133 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2024-11-10 18:05:56,133 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2024-11-10 18:05:56,134 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 18 remaining) [2024-11-10 18:05:56,135 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-11-10 18:05:56,135 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2024-11-10 18:05:56,135 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2024-11-10 18:05:56,135 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2024-11-10 18:05:56,135 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2024-11-10 18:05:56,138 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2024-11-10 18:05:56,139 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2024-11-10 18:05:56,139 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2024-11-10 18:05:56,139 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2024-11-10 18:05:56,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 18:05:56,139 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-11-10 18:05:56,148 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 18:05:56,148 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 18:05:56,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:05:56 BasicIcfg [2024-11-10 18:05:56,157 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 18:05:56,158 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 18:05:56,158 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 18:05:56,158 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 18:05:56,159 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:05:52" (3/4) ... [2024-11-10 18:05:56,160 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 18:05:56,164 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-10 18:05:56,171 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 48 nodes and edges [2024-11-10 18:05:56,172 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-11-10 18:05:56,172 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-10 18:05:56,173 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-10 18:05:56,173 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-10 18:05:56,173 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-10 18:05:56,279 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 18:05:56,280 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 18:05:56,280 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 18:05:56,281 INFO L158 Benchmark]: Toolchain (without parser) took 5508.91ms. Allocated memory was 205.5MB in the beginning and 257.9MB in the end (delta: 52.4MB). Free memory was 173.7MB in the beginning and 146.5MB in the end (delta: 27.2MB). Peak memory consumption was 80.2MB. Max. memory is 16.1GB. [2024-11-10 18:05:56,281 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 130.0MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 18:05:56,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.04ms. Allocated memory is still 205.5MB. Free memory was 173.7MB in the beginning and 150.2MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-10 18:05:56,282 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.76ms. Allocated memory is still 205.5MB. Free memory was 150.2MB in the beginning and 148.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:05:56,282 INFO L158 Benchmark]: Boogie Preprocessor took 60.26ms. Allocated memory is still 205.5MB. Free memory was 148.1MB in the beginning and 146.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:05:56,282 INFO L158 Benchmark]: IcfgBuilder took 950.13ms. Allocated memory is still 205.5MB. Free memory was 144.9MB in the beginning and 170.5MB in the end (delta: -25.6MB). Peak memory consumption was 94.4MB. Max. memory is 16.1GB. [2024-11-10 18:05:56,282 INFO L158 Benchmark]: TraceAbstraction took 3733.12ms. Allocated memory was 205.5MB in the beginning and 257.9MB in the end (delta: 52.4MB). Free memory was 169.7MB in the beginning and 150.7MB in the end (delta: 19.1MB). Peak memory consumption was 70.4MB. Max. memory is 16.1GB. [2024-11-10 18:05:56,282 INFO L158 Benchmark]: Witness Printer took 122.49ms. Allocated memory is still 257.9MB. Free memory was 150.7MB in the beginning and 146.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 18:05:56,284 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 130.0MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 570.04ms. Allocated memory is still 205.5MB. Free memory was 173.7MB in the beginning and 150.2MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.76ms. Allocated memory is still 205.5MB. Free memory was 150.2MB in the beginning and 148.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.26ms. Allocated memory is still 205.5MB. Free memory was 148.1MB in the beginning and 146.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 950.13ms. Allocated memory is still 205.5MB. Free memory was 144.9MB in the beginning and 170.5MB in the end (delta: -25.6MB). Peak memory consumption was 94.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3733.12ms. Allocated memory was 205.5MB in the beginning and 257.9MB in the end (delta: 52.4MB). Free memory was 169.7MB in the beginning and 150.7MB in the end (delta: 19.1MB). Peak memory consumption was 70.4MB. Max. memory is 16.1GB. * Witness Printer took 122.49ms. Allocated memory is still 257.9MB. Free memory was 150.7MB in the beginning and 146.5MB 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: -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: 687]: 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, 54 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 376 IncrementalHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 16 mSDtfsCounter, 376 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=5, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 175 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 727 SizeOfPredicates, 0 NumberOfNonLiveVariables, 562 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 240/326 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 18:05:56,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE