./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-wmm/safe016_rmo.opt.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 e946e8dea30db7efb52f6f71a24f03cd895152f9df0eae9d8d1291d135f806ee --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:31:36,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:31:36,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:31:36,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:31:36,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:31:36,433 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:31:36,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:31:36,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:31:36,436 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:31:36,437 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:31:36,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:31:36,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:31:36,438 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:31:36,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:31:36,441 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:31:36,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:31:36,441 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:31:36,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:31:36,442 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:31:36,442 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:31:36,443 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:31:36,446 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:31:36,447 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:31:36,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:31:36,447 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:31:36,447 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:31:36,448 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:31:36,448 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:31:36,448 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:31:36,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:31:36,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:31:36,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:31:36,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:31:36,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:31:36,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:31:36,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:31:36,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:31:36,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:31:36,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:31:36,451 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:31:36,451 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:31:36,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:31:36,452 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e946e8dea30db7efb52f6f71a24f03cd895152f9df0eae9d8d1291d135f806ee [2024-11-22 21:31:36,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:31:36,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:31:36,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:31:36,755 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:31:36,755 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:31:36,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_rmo.opt.i [2024-11-22 21:31:38,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:31:38,468 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:31:38,469 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_rmo.opt.i [2024-11-22 21:31:38,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c94c739/e4b4610680a74aedbea1b50a70e00a52/FLAGc1043be88 [2024-11-22 21:31:38,779 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c94c739/e4b4610680a74aedbea1b50a70e00a52 [2024-11-22 21:31:38,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:31:38,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:31:38,784 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:31:38,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:31:38,788 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:31:38,789 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:31:38" (1/1) ... [2024-11-22 21:31:38,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad055e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:38, skipping insertion in model container [2024-11-22 21:31:38,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:31:38" (1/1) ... [2024-11-22 21:31:38,855 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:31:39,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:31:39,339 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:31:39,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:31:39,483 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:31:39,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39 WrapperNode [2024-11-22 21:31:39,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:31:39,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:31:39,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:31:39,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:31:39,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39" (1/1) ... [2024-11-22 21:31:39,524 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39" (1/1) ... [2024-11-22 21:31:39,556 INFO L138 Inliner]: procedures = 176, calls = 74, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2024-11-22 21:31:39,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:31:39,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:31:39,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:31:39,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:31:39,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39" (1/1) ... [2024-11-22 21:31:39,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39" (1/1) ... [2024-11-22 21:31:39,580 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39" (1/1) ... [2024-11-22 21:31:39,606 INFO L175 MemorySlicer]: Split 28 memory accesses to 2 slices as follows [2, 26]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-11-22 21:31:39,607 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39" (1/1) ... [2024-11-22 21:31:39,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39" (1/1) ... [2024-11-22 21:31:39,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39" (1/1) ... [2024-11-22 21:31:39,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39" (1/1) ... [2024-11-22 21:31:39,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39" (1/1) ... [2024-11-22 21:31:39,652 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39" (1/1) ... [2024-11-22 21:31:39,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:31:39,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:31:39,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:31:39,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:31:39,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39" (1/1) ... [2024-11-22 21:31:39,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:31:39,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:31:39,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:31:39,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:31:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:31:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:31:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:31:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:31:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 21:31:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:31:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-22 21:31:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-22 21:31:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-22 21:31:39,785 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-22 21:31:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-22 21:31:39,785 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-22 21:31:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-22 21:31:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-22 21:31:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:31:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:31:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 21:31:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:31:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:31:39,789 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:31:39,948 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:31:39,951 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:31:40,535 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:31:40,535 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:31:41,194 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:31:41,194 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 21:31:41,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:31:41 BoogieIcfgContainer [2024-11-22 21:31:41,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:31:41,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:31:41,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:31:41,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:31:41,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:31:38" (1/3) ... [2024-11-22 21:31:41,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e267af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:31:41, skipping insertion in model container [2024-11-22 21:31:41,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:31:39" (2/3) ... [2024-11-22 21:31:41,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e267af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:31:41, skipping insertion in model container [2024-11-22 21:31:41,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:31:41" (3/3) ... [2024-11-22 21:31:41,206 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.opt.i [2024-11-22 21:31:41,223 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:31:41,224 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2024-11-22 21:31:41,224 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:31:41,390 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:31:41,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 100 transitions, 216 flow [2024-11-22 21:31:41,483 INFO L124 PetriNetUnfolderBase]: 2/96 cut-off events. [2024-11-22 21:31:41,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:31:41,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 2/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 389 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2024-11-22 21:31:41,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 100 transitions, 216 flow [2024-11-22 21:31:41,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 96 transitions, 204 flow [2024-11-22 21:31:41,504 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:31:41,511 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;@14d794cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:31:41,511 INFO L334 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2024-11-22 21:31:41,516 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:31:41,516 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-22 21:31:41,516 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:31:41,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:31:41,517 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:31:41,517 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:31:41,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:31:41,522 INFO L85 PathProgramCache]: Analyzing trace with hash 882979422, now seen corresponding path program 1 times [2024-11-22 21:31:41,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:31:41,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125137617] [2024-11-22 21:31:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:31:41,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:31:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:31:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:31:41,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:31:41,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125137617] [2024-11-22 21:31:41,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125137617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:31:41,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:31:41,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:31:41,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853430045] [2024-11-22 21:31:41,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:31:41,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:31:41,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:31:41,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:31:41,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:31:41,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 100 [2024-11-22 21:31:41,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:31:41,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:31:41,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 100 [2024-11-22 21:31:41,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:31:58,784 INFO L124 PetriNetUnfolderBase]: 81178/115764 cut-off events. [2024-11-22 21:31:58,785 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2024-11-22 21:31:59,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222557 conditions, 115764 events. 81178/115764 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 7127. Compared 957699 event pairs, 81178 based on Foata normal form. 3430/68313 useless extension candidates. Maximal degree in co-relation 222545. Up to 105987 conditions per place. [2024-11-22 21:31:59,713 INFO L140 encePairwiseOnDemand]: 63/100 looper letters, 42 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-11-22 21:31:59,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 59 transitions, 216 flow [2024-11-22 21:31:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:31:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:31:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-11-22 21:31:59,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4633333333333333 [2024-11-22 21:31:59,729 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 204 flow. Second operand 3 states and 139 transitions. [2024-11-22 21:31:59,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 59 transitions, 216 flow [2024-11-22 21:31:59,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 59 transitions, 212 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:31:59,765 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 128 flow [2024-11-22 21:31:59,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-11-22 21:31:59,772 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -37 predicate places. [2024-11-22 21:31:59,772 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 128 flow [2024-11-22 21:31:59,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:31:59,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:31:59,773 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:31:59,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:31:59,774 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:31:59,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:31:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash 882979423, now seen corresponding path program 1 times [2024-11-22 21:31:59,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:31:59,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564293398] [2024-11-22 21:31:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:31:59,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:31:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:31:59,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:31:59,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:31:59,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564293398] [2024-11-22 21:31:59,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564293398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:31:59,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:31:59,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:31:59,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445283459] [2024-11-22 21:31:59,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:31:59,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:31:59,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:31:59,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:31:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:31:59,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 100 [2024-11-22 21:31:59,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:31:59,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:31:59,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 100 [2024-11-22 21:31:59,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:32:01,672 INFO L124 PetriNetUnfolderBase]: 6311/9814 cut-off events. [2024-11-22 21:32:01,672 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:32:01,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18580 conditions, 9814 events. 6311/9814 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 67742 event pairs, 6311 based on Foata normal form. 0/9246 useless extension candidates. Maximal degree in co-relation 18574. Up to 8592 conditions per place. [2024-11-22 21:32:01,735 INFO L140 encePairwiseOnDemand]: 85/100 looper letters, 27 selfloop transitions, 1 changer transitions 1/45 dead transitions. [2024-11-22 21:32:01,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 158 flow [2024-11-22 21:32:01,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:32:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:32:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-22 21:32:01,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3433333333333333 [2024-11-22 21:32:01,740 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 128 flow. Second operand 3 states and 103 transitions. [2024-11-22 21:32:01,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 158 flow [2024-11-22 21:32:01,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 45 transitions, 157 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:32:01,742 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 99 flow [2024-11-22 21:32:01,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-11-22 21:32:01,744 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -50 predicate places. [2024-11-22 21:32:01,744 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 99 flow [2024-11-22 21:32:01,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:01,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:32:01,745 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:32:01,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:32:01,745 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:32:01,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:32:01,747 INFO L85 PathProgramCache]: Analyzing trace with hash 919965507, now seen corresponding path program 1 times [2024-11-22 21:32:01,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:32:01,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964122168] [2024-11-22 21:32:01,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:32:01,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:32:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:32:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:32:02,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:32:02,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964122168] [2024-11-22 21:32:02,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964122168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:32:02,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:32:02,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:32:02,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101797821] [2024-11-22 21:32:02,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:32:02,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:32:02,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:32:02,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:32:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:32:02,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 100 [2024-11-22 21:32:02,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:02,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:32:02,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 100 [2024-11-22 21:32:02,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:32:03,487 INFO L124 PetriNetUnfolderBase]: 5447/8464 cut-off events. [2024-11-22 21:32:03,487 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:32:03,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16079 conditions, 8464 events. 5447/8464 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 55783 event pairs, 1783 based on Foata normal form. 0/8125 useless extension candidates. Maximal degree in co-relation 16072. Up to 6097 conditions per place. [2024-11-22 21:32:03,522 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 43 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-11-22 21:32:03,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 225 flow [2024-11-22 21:32:03,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:32:03,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:32:03,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-22 21:32:03,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-11-22 21:32:03,523 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 99 flow. Second operand 3 states and 107 transitions. [2024-11-22 21:32:03,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 225 flow [2024-11-22 21:32:03,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:32:03,526 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 108 flow [2024-11-22 21:32:03,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-11-22 21:32:03,527 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -49 predicate places. [2024-11-22 21:32:03,528 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 108 flow [2024-11-22 21:32:03,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:03,528 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:32:03,528 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:32:03,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:32:03,529 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:32:03,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:32:03,530 INFO L85 PathProgramCache]: Analyzing trace with hash -676299082, now seen corresponding path program 1 times [2024-11-22 21:32:03,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:32:03,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165346854] [2024-11-22 21:32:03,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:32:03,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:32:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:32:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:32:03,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:32:03,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165346854] [2024-11-22 21:32:03,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165346854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:32:03,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:32:03,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:32:03,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818547626] [2024-11-22 21:32:03,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:32:03,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:32:03,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:32:03,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:32:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:32:03,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 100 [2024-11-22 21:32:03,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:03,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:32:03,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 100 [2024-11-22 21:32:03,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:32:04,951 INFO L124 PetriNetUnfolderBase]: 5039/7912 cut-off events. [2024-11-22 21:32:04,952 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2024-11-22 21:32:04,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15953 conditions, 7912 events. 5039/7912 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 52246 event pairs, 1591 based on Foata normal form. 0/7861 useless extension candidates. Maximal degree in co-relation 15944. Up to 5544 conditions per place. [2024-11-22 21:32:04,995 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 42 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-11-22 21:32:04,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 228 flow [2024-11-22 21:32:04,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:32:04,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:32:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-11-22 21:32:04,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-11-22 21:32:04,997 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 108 flow. Second operand 4 states and 125 transitions. [2024-11-22 21:32:04,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 228 flow [2024-11-22 21:32:05,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:32:05,002 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 104 flow [2024-11-22 21:32:05,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-11-22 21:32:05,003 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -49 predicate places. [2024-11-22 21:32:05,003 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 104 flow [2024-11-22 21:32:05,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:05,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:32:05,004 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:32:05,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:32:05,004 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:32:05,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:32:05,005 INFO L85 PathProgramCache]: Analyzing trace with hash -676299081, now seen corresponding path program 1 times [2024-11-22 21:32:05,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:32:05,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81623506] [2024-11-22 21:32:05,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:32:05,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:32:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:32:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:32:05,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:32:05,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81623506] [2024-11-22 21:32:05,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81623506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:32:05,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:32:05,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:32:05,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533065213] [2024-11-22 21:32:05,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:32:05,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:32:05,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:32:05,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:32:05,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:32:05,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 100 [2024-11-22 21:32:05,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:05,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:32:05,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 100 [2024-11-22 21:32:05,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:32:06,402 INFO L124 PetriNetUnfolderBase]: 4631/7488 cut-off events. [2024-11-22 21:32:06,402 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-11-22 21:32:06,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14833 conditions, 7488 events. 4631/7488 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 51977 event pairs, 887 based on Foata normal form. 144/7581 useless extension candidates. Maximal degree in co-relation 14824. Up to 4992 conditions per place. [2024-11-22 21:32:06,453 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 41 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-22 21:32:06,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 222 flow [2024-11-22 21:32:06,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:32:06,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:32:06,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-22 21:32:06,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31 [2024-11-22 21:32:06,455 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 104 flow. Second operand 4 states and 124 transitions. [2024-11-22 21:32:06,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 222 flow [2024-11-22 21:32:06,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 217 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:32:06,458 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 99 flow [2024-11-22 21:32:06,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2024-11-22 21:32:06,459 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -50 predicate places. [2024-11-22 21:32:06,459 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 99 flow [2024-11-22 21:32:06,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:06,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:32:06,460 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:32:06,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:32:06,464 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:32:06,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:32:06,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1456215445, now seen corresponding path program 1 times [2024-11-22 21:32:06,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:32:06,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117079705] [2024-11-22 21:32:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:32:06,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:32:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:32:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:32:06,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:32:06,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117079705] [2024-11-22 21:32:06,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117079705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:32:06,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:32:06,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:32:06,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46796555] [2024-11-22 21:32:06,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:32:06,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:32:06,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:32:06,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:32:06,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:32:06,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 100 [2024-11-22 21:32:06,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:06,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:32:06,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 100 [2024-11-22 21:32:06,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:32:07,527 INFO L124 PetriNetUnfolderBase]: 4631/7366 cut-off events. [2024-11-22 21:32:07,527 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2024-11-22 21:32:07,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14710 conditions, 7366 events. 4631/7366 cut-off events. For 416/416 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 50247 event pairs, 4631 based on Foata normal form. 192/7374 useless extension candidates. Maximal degree in co-relation 14702. Up to 6336 conditions per place. [2024-11-22 21:32:07,571 INFO L140 encePairwiseOnDemand]: 98/100 looper letters, 24 selfloop transitions, 1 changer transitions 1/41 dead transitions. [2024-11-22 21:32:07,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 41 transitions, 149 flow [2024-11-22 21:32:07,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:32:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:32:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-22 21:32:07,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28 [2024-11-22 21:32:07,573 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 99 flow. Second operand 3 states and 84 transitions. [2024-11-22 21:32:07,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 41 transitions, 149 flow [2024-11-22 21:32:07,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:32:07,575 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 94 flow [2024-11-22 21:32:07,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-11-22 21:32:07,577 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -51 predicate places. [2024-11-22 21:32:07,577 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 94 flow [2024-11-22 21:32:07,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:07,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:32:07,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:32:07,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:32:07,578 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:32:07,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:32:07,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1456214123, now seen corresponding path program 1 times [2024-11-22 21:32:07,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:32:07,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717667563] [2024-11-22 21:32:07,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:32:07,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:32:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:32:07,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:32:07,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:32:07,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717667563] [2024-11-22 21:32:07,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717667563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:32:07,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:32:07,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:32:07,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037652422] [2024-11-22 21:32:07,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:32:07,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:32:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:32:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:32:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:32:07,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 100 [2024-11-22 21:32:07,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:07,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:32:07,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 100 [2024-11-22 21:32:07,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand