./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d 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_06-tricky_address1.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 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:39:30,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:39:30,428 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:39:30,435 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:39:30,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:39:30,459 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:39:30,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:39:30,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:39:30,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:39:30,461 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:39:30,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:39:30,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:39:30,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:39:30,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:39:30,463 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:39:30,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:39:30,464 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:39:30,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:39:30,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:39:30,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:39:30,465 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:39:30,466 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:39:30,466 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:39:30,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:39:30,467 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:39:30,468 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:39:30,468 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:39:30,468 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:39:30,469 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:39:30,469 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:39:30,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:39:30,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:39:30,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:39:30,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:39:30,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:39:30,471 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:39:30,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:39:30,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:39:30,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:39:30,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:39:30,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:39:30,476 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:39:30,477 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e [2024-11-09 10:39:30,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:39:30,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:39:30,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:39:30,810 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:39:30,815 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:39:30,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2024-11-09 10:39:32,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:39:32,538 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:39:32,538 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2024-11-09 10:39:32,565 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0936e7327/9b4b0468f0634d75845c10d66e59da2e/FLAG74fa5b213 [2024-11-09 10:39:32,579 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0936e7327/9b4b0468f0634d75845c10d66e59da2e [2024-11-09 10:39:32,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:39:32,582 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:39:32,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:39:32,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:39:32,589 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:39:32,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:39:32" (1/1) ... [2024-11-09 10:39:32,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fe4922c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:32, skipping insertion in model container [2024-11-09 10:39:32,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:39:32" (1/1) ... [2024-11-09 10:39:32,639 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:39:33,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:39:33,116 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:39:33,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:39:33,323 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:39:33,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33 WrapperNode [2024-11-09 10:39:33,325 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:39:33,326 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:39:33,326 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:39:33,327 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:39:33,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33" (1/1) ... [2024-11-09 10:39:33,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33" (1/1) ... [2024-11-09 10:39:33,398 INFO L138 Inliner]: procedures = 265, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 127 [2024-11-09 10:39:33,402 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:39:33,403 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:39:33,403 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:39:33,403 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:39:33,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33" (1/1) ... [2024-11-09 10:39:33,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33" (1/1) ... [2024-11-09 10:39:33,420 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33" (1/1) ... [2024-11-09 10:39:33,441 INFO L175 MemorySlicer]: Split 64 memory accesses to 1 slices as follows [64]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 2 writes are split as follows [2]. [2024-11-09 10:39:33,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33" (1/1) ... [2024-11-09 10:39:33,443 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33" (1/1) ... [2024-11-09 10:39:33,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33" (1/1) ... [2024-11-09 10:39:33,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33" (1/1) ... [2024-11-09 10:39:33,468 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33" (1/1) ... [2024-11-09 10:39:33,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33" (1/1) ... [2024-11-09 10:39:33,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:39:33,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:39:33,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:39:33,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:39:33,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33" (1/1) ... [2024-11-09 10:39:33,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:39:33,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:39:33,525 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) [2024-11-09 10:39:33,527 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 [2024-11-09 10:39:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 10:39:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:39:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:39:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 10:39:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:39:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 10:39:33,571 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 10:39:33,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:39:33,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:39:33,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:39:33,573 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:39:33,698 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:39:33,700 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:39:33,987 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:39:33,987 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:39:34,367 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:39:34,368 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 10:39:34,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:39:34 BoogieIcfgContainer [2024-11-09 10:39:34,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:39:34,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:39:34,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:39:34,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:39:34,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:39:32" (1/3) ... [2024-11-09 10:39:34,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e85e62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:39:34, skipping insertion in model container [2024-11-09 10:39:34,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:33" (2/3) ... [2024-11-09 10:39:34,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e85e62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:39:34, skipping insertion in model container [2024-11-09 10:39:34,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:39:34" (3/3) ... [2024-11-09 10:39:34,381 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_06-tricky_address1.i [2024-11-09 10:39:34,398 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:39:34,398 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-11-09 10:39:34,398 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:39:34,442 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:39:34,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 62 flow [2024-11-09 10:39:34,511 INFO L124 PetriNetUnfolderBase]: 1/28 cut-off events. [2024-11-09 10:39:34,512 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:39:34,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 28 events. 1/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 52 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 3. Up to 2 conditions per place. [2024-11-09 10:39:34,516 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 62 flow [2024-11-09 10:39:34,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 28 transitions, 59 flow [2024-11-09 10:39:34,529 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:39:34,539 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;@4fbcd768, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:39:34,539 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-09 10:39:34,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:39:34,547 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-11-09 10:39:34,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:39:34,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:34,549 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:34,549 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:39:34,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:34,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1076103807, now seen corresponding path program 1 times [2024-11-09 10:39:34,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:34,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772923669] [2024-11-09 10:39:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:34,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:34,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:34,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772923669] [2024-11-09 10:39:34,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772923669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:34,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:34,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:39:34,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824701543] [2024-11-09 10:39:34,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:34,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:39:34,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:34,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:39:34,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:39:34,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-09 10:39:34,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:34,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:34,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-09 10:39:34,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:35,020 INFO L124 PetriNetUnfolderBase]: 43/138 cut-off events. [2024-11-09 10:39:35,021 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:39:35,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 138 events. 43/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 533 event pairs, 42 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 230. Up to 102 conditions per place. [2024-11-09 10:39:35,026 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 16 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-11-09 10:39:35,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 97 flow [2024-11-09 10:39:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-11-09 10:39:35,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.632183908045977 [2024-11-09 10:39:35,040 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 59 flow. Second operand 3 states and 55 transitions. [2024-11-09 10:39:35,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 97 flow [2024-11-09 10:39:35,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:39:35,045 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 70 flow [2024-11-09 10:39:35,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-11-09 10:39:35,050 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-11-09 10:39:35,051 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 70 flow [2024-11-09 10:39:35,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:35,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:35,052 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:35,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:39:35,053 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:39:35,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1698609433, now seen corresponding path program 1 times [2024-11-09 10:39:35,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:35,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022039965] [2024-11-09 10:39:35,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:35,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:35,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:35,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022039965] [2024-11-09 10:39:35,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022039965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:39:35,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729391157] [2024-11-09 10:39:35,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:35,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:39:35,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:39:35,185 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) [2024-11-09 10:39:35,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:39:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:35,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 10:39:35,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:39:35,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:35,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:39:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:35,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729391157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:39:35,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:39:35,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 10:39:35,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378422545] [2024-11-09 10:39:35,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:39:35,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:39:35,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:39:35,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:39:35,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-09 10:39:35,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-11-09 10:39:35,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:35,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-09 10:39:35,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:35,485 INFO L124 PetriNetUnfolderBase]: 43/141 cut-off events. [2024-11-09 10:39:35,486 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:39:35,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 141 events. 43/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 533 event pairs, 42 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 249. Up to 102 conditions per place. [2024-11-09 10:39:35,488 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 16 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2024-11-09 10:39:35,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 124 flow [2024-11-09 10:39:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:39:35,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:39:35,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-11-09 10:39:35,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-09 10:39:35,492 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 70 flow. Second operand 6 states and 96 transitions. [2024-11-09 10:39:35,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 124 flow [2024-11-09 10:39:35,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 120 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 10:39:35,495 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 102 flow [2024-11-09 10:39:35,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-11-09 10:39:35,497 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-11-09 10:39:35,497 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 102 flow [2024-11-09 10:39:35,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-11-09 10:39:35,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:35,498 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:35,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 10:39:35,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:39:35,703 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:39:35,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:35,705 INFO L85 PathProgramCache]: Analyzing trace with hash 145219839, now seen corresponding path program 2 times [2024-11-09 10:39:35,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:35,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241622696] [2024-11-09 10:39:35,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:35,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 10:39:35,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:35,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241622696] [2024-11-09 10:39:35,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241622696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:35,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:35,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:39:35,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66042105] [2024-11-09 10:39:35,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:35,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:39:35,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:35,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:39:35,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:39:35,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-11-09 10:39:35,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-11-09 10:39:35,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:35,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-11-09 10:39:35,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:35,924 INFO L124 PetriNetUnfolderBase]: 43/137 cut-off events. [2024-11-09 10:39:35,924 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:39:35,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 137 events. 43/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 503 event pairs, 42 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 236. Up to 105 conditions per place. [2024-11-09 10:39:35,926 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 20 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2024-11-09 10:39:35,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 140 flow [2024-11-09 10:39:35,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-09 10:39:35,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-11-09 10:39:35,929 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 102 flow. Second operand 3 states and 49 transitions. [2024-11-09 10:39:35,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 140 flow [2024-11-09 10:39:35,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 30 transitions, 126 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 10:39:35,932 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 86 flow [2024-11-09 10:39:35,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-11-09 10:39:35,934 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2024-11-09 10:39:35,934 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 86 flow [2024-11-09 10:39:35,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-11-09 10:39:35,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:35,935 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:35,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:39:35,935 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:39:35,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:35,936 INFO L85 PathProgramCache]: Analyzing trace with hash 145219840, now seen corresponding path program 1 times [2024-11-09 10:39:35,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:35,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673662700] [2024-11-09 10:39:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:35,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:36,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:36,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:36,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673662700] [2024-11-09 10:39:36,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673662700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:39:36,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86634776] [2024-11-09 10:39:36,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:36,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:39:36,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:39:36,068 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) [2024-11-09 10:39:36,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:39:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:36,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:39:36,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:39:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:36,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:39:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:36,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86634776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:39:36,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:39:36,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 10:39:36,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206648242] [2024-11-09 10:39:36,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:39:36,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:39:36,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:36,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:39:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:39:36,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-09 10:39:36,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 86 flow. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 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) [2024-11-09 10:39:36,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:36,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-09 10:39:36,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:36,349 INFO L124 PetriNetUnfolderBase]: 43/143 cut-off events. [2024-11-09 10:39:36,349 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-09 10:39:36,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 143 events. 43/143 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 503 event pairs, 42 based on Foata normal form. 6/140 useless extension candidates. Maximal degree in co-relation 276. Up to 102 conditions per place. [2024-11-09 10:39:36,352 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 16 selfloop transitions, 11 changer transitions 0/36 dead transitions. [2024-11-09 10:39:36,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 176 flow [2024-11-09 10:39:36,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:39:36,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:39:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-11-09 10:39:36,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2024-11-09 10:39:36,356 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 86 flow. Second operand 12 states and 177 transitions. [2024-11-09 10:39:36,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 176 flow [2024-11-09 10:39:36,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:39:36,361 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 169 flow [2024-11-09 10:39:36,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=169, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2024-11-09 10:39:36,362 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-11-09 10:39:36,362 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 169 flow [2024-11-09 10:39:36,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 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) [2024-11-09 10:39:36,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:36,363 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:36,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:39:36,563 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 [2024-11-09 10:39:36,564 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:39:36,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:36,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1656026432, now seen corresponding path program 2 times [2024-11-09 10:39:36,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:36,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068262988] [2024-11-09 10:39:36,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:36,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 10:39:36,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:36,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068262988] [2024-11-09 10:39:36,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068262988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:36,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:36,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:39:36,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296656161] [2024-11-09 10:39:36,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:36,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:39:36,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:36,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:39:36,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:39:36,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-11-09 10:39:36,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:36,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:36,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-11-09 10:39:36,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:36,928 INFO L124 PetriNetUnfolderBase]: 43/139 cut-off events. [2024-11-09 10:39:36,928 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-09 10:39:36,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 139 events. 43/139 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 462 event pairs, 36 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 295. Up to 86 conditions per place. [2024-11-09 10:39:36,930 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 3 changer transitions 3/40 dead transitions. [2024-11-09 10:39:36,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 40 transitions, 243 flow [2024-11-09 10:39:36,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:39:36,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:39:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-11-09 10:39:36,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5603448275862069 [2024-11-09 10:39:36,934 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 169 flow. Second operand 4 states and 65 transitions. [2024-11-09 10:39:36,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 40 transitions, 243 flow [2024-11-09 10:39:36,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 195 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-09 10:39:36,941 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 123 flow [2024-11-09 10:39:36,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2024-11-09 10:39:36,942 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-11-09 10:39:36,944 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 123 flow [2024-11-09 10:39:36,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:36,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:36,944 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:36,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:39:36,945 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:39:36,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:36,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1655194023, now seen corresponding path program 1 times [2024-11-09 10:39:36,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:36,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969156028] [2024-11-09 10:39:36,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:36,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 10:39:37,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:37,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969156028] [2024-11-09 10:39:37,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969156028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:37,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:37,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:39:37,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921337140] [2024-11-09 10:39:37,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:37,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:39:37,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:37,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:39:37,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:39:37,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:39:37,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:37,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:37,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:39:37,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:37,144 INFO L124 PetriNetUnfolderBase]: 43/137 cut-off events. [2024-11-09 10:39:37,144 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-11-09 10:39:37,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 137 events. 43/137 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 463 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 278. Up to 90 conditions per place. [2024-11-09 10:39:37,145 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 32 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-09 10:39:37,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 203 flow [2024-11-09 10:39:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:39:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:39:37,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-09 10:39:37,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:39:37,148 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 123 flow. Second operand 4 states and 58 transitions. [2024-11-09 10:39:37,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 203 flow [2024-11-09 10:39:37,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 195 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:39:37,151 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 117 flow [2024-11-09 10:39:37,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2024-11-09 10:39:37,152 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-11-09 10:39:37,152 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 117 flow [2024-11-09 10:39:37,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:37,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:37,153 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:37,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:39:37,153 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:39:37,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:37,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1655194022, now seen corresponding path program 1 times [2024-11-09 10:39:37,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:37,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089277905] [2024-11-09 10:39:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:37,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 10:39:37,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:37,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089277905] [2024-11-09 10:39:37,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089277905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:37,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:37,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:39:37,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027724547] [2024-11-09 10:39:37,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:37,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:39:37,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:37,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:39:37,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:39:37,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-11-09 10:39:37,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:37,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:37,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-11-09 10:39:37,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:37,504 INFO L124 PetriNetUnfolderBase]: 43/122 cut-off events. [2024-11-09 10:39:37,504 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-11-09 10:39:37,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 122 events. 43/122 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 325 event pairs, 25 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 263. Up to 90 conditions per place. [2024-11-09 10:39:37,509 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 30 selfloop transitions, 2 changer transitions 2/37 dead transitions. [2024-11-09 10:39:37,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 37 transitions, 195 flow [2024-11-09 10:39:37,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:39:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:39:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-09 10:39:37,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-11-09 10:39:37,512 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 117 flow. Second operand 4 states and 66 transitions. [2024-11-09 10:39:37,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 37 transitions, 195 flow [2024-11-09 10:39:37,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 37 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:39:37,514 INFO L231 Difference]: Finished difference. Result has 48 places, 29 transitions, 112 flow [2024-11-09 10:39:37,515 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=48, PETRI_TRANSITIONS=29} [2024-11-09 10:39:37,517 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-11-09 10:39:37,517 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 29 transitions, 112 flow [2024-11-09 10:39:37,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:37,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:37,518 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:37,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:39:37,519 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-09 10:39:37,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:37,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1746334513, now seen corresponding path program 1 times [2024-11-09 10:39:37,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:37,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481831943] [2024-11-09 10:39:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:37,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 10:39:37,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:37,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481831943] [2024-11-09 10:39:37,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481831943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:37,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:37,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:39:37,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636945501] [2024-11-09 10:39:37,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:37,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:39:37,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:37,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:39:37,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:39:37,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-11-09 10:39:37,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 29 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:37,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:37,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-11-09 10:39:37,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:37,625 INFO L124 PetriNetUnfolderBase]: 37/104 cut-off events. [2024-11-09 10:39:37,626 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-09 10:39:37,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 104 events. 37/104 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 255 event pairs, 36 based on Foata normal form. 7/110 useless extension candidates. Maximal degree in co-relation 238. Up to 98 conditions per place. [2024-11-09 10:39:37,630 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-11-09 10:39:37,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 162 flow [2024-11-09 10:39:37,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:37,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-11-09 10:39:37,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-11-09 10:39:37,633 INFO L175 Difference]: Start difference. First operand has 48 places, 29 transitions, 112 flow. Second operand 3 states and 50 transitions. [2024-11-09 10:39:37,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 162 flow [2024-11-09 10:39:37,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 28 transitions, 159 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:39:37,635 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-11-09 10:39:37,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-11-09 10:39:37,636 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-11-09 10:39:37,637 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-11-09 10:39:37,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:37,640 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2024-11-09 10:39:37,641 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-11-09 10:39:37,641 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-09 10:39:37,641 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-11-09 10:39:37,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2024-11-09 10:39:37,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2024-11-09 10:39:37,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-11-09 10:39:37,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2024-11-09 10:39:37,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-11-09 10:39:37,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-11-09 10:39:37,643 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-11-09 10:39:37,643 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-09 10:39:37,643 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-09 10:39:37,643 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-11-09 10:39:37,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:39:37,643 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2024-11-09 10:39:37,652 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 10:39:37,652 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 10:39:37,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:39:37 BasicIcfg [2024-11-09 10:39:37,660 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 10:39:37,661 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 10:39:37,662 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 10:39:37,662 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 10:39:37,662 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:39:34" (3/4) ... [2024-11-09 10:39:37,664 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 10:39:37,668 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-09 10:39:37,674 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2024-11-09 10:39:37,674 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-09 10:39:37,675 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 10:39:37,782 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 10:39:37,782 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 10:39:37,782 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 10:39:37,783 INFO L158 Benchmark]: Toolchain (without parser) took 5200.64ms. Allocated memory was 159.4MB in the beginning and 205.5MB in the end (delta: 46.1MB). Free memory was 106.8MB in the beginning and 120.6MB in the end (delta: -13.8MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2024-11-09 10:39:37,783 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 100.7MB. Free memory was 64.7MB in the beginning and 64.7MB in the end (delta: 77.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 10:39:37,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 740.61ms. Allocated memory is still 159.4MB. Free memory was 106.8MB in the beginning and 114.0MB in the end (delta: -7.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-09 10:39:37,783 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.86ms. Allocated memory is still 159.4MB. Free memory was 114.0MB in the beginning and 111.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 10:39:37,784 INFO L158 Benchmark]: Boogie Preprocessor took 71.92ms. Allocated memory is still 159.4MB. Free memory was 111.9MB in the beginning and 108.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 10:39:37,784 INFO L158 Benchmark]: RCFGBuilder took 892.47ms. Allocated memory was 159.4MB in the beginning and 205.5MB in the end (delta: 46.1MB). Free memory was 108.7MB in the beginning and 138.8MB in the end (delta: -30.0MB). Peak memory consumption was 70.6MB. Max. memory is 16.1GB. [2024-11-09 10:39:37,784 INFO L158 Benchmark]: TraceAbstraction took 3288.84ms. Allocated memory is still 205.5MB. Free memory was 137.7MB in the beginning and 125.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2024-11-09 10:39:37,784 INFO L158 Benchmark]: Witness Printer took 120.84ms. Allocated memory is still 205.5MB. Free memory was 125.9MB in the beginning and 120.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 10:39:37,788 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 100.7MB. Free memory was 64.7MB in the beginning and 64.7MB in the end (delta: 77.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 740.61ms. Allocated memory is still 159.4MB. Free memory was 106.8MB in the beginning and 114.0MB in the end (delta: -7.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.86ms. Allocated memory is still 159.4MB. Free memory was 114.0MB in the beginning and 111.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.92ms. Allocated memory is still 159.4MB. Free memory was 111.9MB in the beginning and 108.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 892.47ms. Allocated memory was 159.4MB in the beginning and 205.5MB in the end (delta: 46.1MB). Free memory was 108.7MB in the beginning and 138.8MB in the end (delta: -30.0MB). Peak memory consumption was 70.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3288.84ms. Allocated memory is still 205.5MB. Free memory was 137.7MB in the beginning and 125.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Witness Printer took 120.84ms. Allocated memory is still 205.5MB. Free memory was 125.9MB in the beginning and 120.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 935]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 42 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 205 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 359 IncrementalHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 12 mSDtfsCounter, 359 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=4, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 806 SizeOfPredicates, 0 NumberOfNonLiveVariables, 365 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 230/263 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 10:39:37,819 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