./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --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/weaver/popl20-bad-ring-nondet.wvr.c -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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:46:47,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:46:47,266 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:46:47,272 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:46:47,272 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:46:47,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:46:47,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:46:47,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:46:47,301 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:46:47,302 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:46:47,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:46:47,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:46:47,303 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:46:47,303 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:46:47,304 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:46:47,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:46:47,304 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:46:47,304 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:46:47,304 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:46:47,305 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:46:47,305 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:46:47,308 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:46:47,308 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:46:47,308 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:46:47,309 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:46:47,309 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:46:47,309 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:46:47,309 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:46:47,309 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:46:47,309 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:46:47,309 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:46:47,310 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:46:47,310 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:46:47,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:46:47,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:46:47,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:46:47,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:46:47,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:46:47,311 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:46:47,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:46:47,311 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:46:47,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:46:47,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2024-11-22 21:46:47,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:46:47,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:46:47,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:46:47,531 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:46:47,532 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:46:47,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-22 21:46:48,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:46:49,013 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:46:49,013 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-22 21:46:49,020 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20b469a28/e058a7896ffc4f6f9e9d1a0869c4f37c/FLAG135ed8931 [2024-11-22 21:46:49,031 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20b469a28/e058a7896ffc4f6f9e9d1a0869c4f37c [2024-11-22 21:46:49,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:46:49,034 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:46:49,035 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:46:49,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:46:49,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:46:49,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d05bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49, skipping insertion in model container [2024-11-22 21:46:49,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,059 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:46:49,272 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:46:49,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:46:49,300 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:46:49,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:46:49,394 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:46:49,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49 WrapperNode [2024-11-22 21:46:49,395 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:46:49,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:46:49,396 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:46:49,396 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:46:49,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,408 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,430 INFO L138 Inliner]: procedures = 24, calls = 49, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 317 [2024-11-22 21:46:49,430 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:46:49,431 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:46:49,431 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:46:49,431 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:46:49,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,446 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,469 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-22 21:46:49,472 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,493 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:46:49,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:46:49,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:46:49,502 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:46:49,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49" (1/1) ... [2024-11-22 21:46:49,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:46:49,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:46:49,535 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 21:46:49,538 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 21:46:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:46:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 21:46:49,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 21:46:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 21:46:49,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 21:46:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 21:46:49,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 21:46:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:46:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:46:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:46:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:46:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 21:46:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 21:46:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 21:46:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:46:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:46:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:46:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:46:49,580 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 21:46:49,685 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:46:49,687 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:46:50,019 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:46:50,019 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:46:50,271 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:46:50,271 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-22 21:46:50,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:46:50 BoogieIcfgContainer [2024-11-22 21:46:50,272 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:46:50,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:46:50,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:46:50,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:46:50,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:46:49" (1/3) ... [2024-11-22 21:46:50,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5d1b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:46:50, skipping insertion in model container [2024-11-22 21:46:50,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:46:49" (2/3) ... [2024-11-22 21:46:50,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5d1b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:46:50, skipping insertion in model container [2024-11-22 21:46:50,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:46:50" (3/3) ... [2024-11-22 21:46:50,277 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2024-11-22 21:46:50,290 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:46:50,290 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-22 21:46:50,290 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:46:50,351 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 21:46:50,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 79 transitions, 179 flow [2024-11-22 21:46:50,414 INFO L124 PetriNetUnfolderBase]: 10/76 cut-off events. [2024-11-22 21:46:50,414 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 21:46:50,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 10/76 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 233 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2024-11-22 21:46:50,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 79 transitions, 179 flow [2024-11-22 21:46:50,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 75 transitions, 168 flow [2024-11-22 21:46:50,429 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:46:50,435 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;@4d3b7c9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:46:50,436 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-22 21:46:50,439 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:46:50,442 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-22 21:46:50,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:46:50,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:46:50,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:46:50,444 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:46:50,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:46:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash 953146, now seen corresponding path program 1 times [2024-11-22 21:46:50,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:46:50,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648301647] [2024-11-22 21:46:50,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:50,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:46:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:50,732 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 21:46:50,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:46:50,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648301647] [2024-11-22 21:46:50,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648301647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:46:50,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:46:50,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:46:50,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717989373] [2024-11-22 21:46:50,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:46:50,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:46:50,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:46:50,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:46:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:46:50,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-22 21:46:50,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 168 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 21:46:50,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:46:50,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-22 21:46:50,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:46:51,760 INFO L124 PetriNetUnfolderBase]: 5875/9276 cut-off events. [2024-11-22 21:46:51,761 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2024-11-22 21:46:51,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17520 conditions, 9276 events. 5875/9276 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64273 event pairs, 5236 based on Foata normal form. 514/6128 useless extension candidates. Maximal degree in co-relation 16908. Up to 7878 conditions per place. [2024-11-22 21:46:51,832 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 47 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-11-22 21:46:51,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 252 flow [2024-11-22 21:46:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:46:51,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:46:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-22 21:46:51,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5232067510548524 [2024-11-22 21:46:51,845 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 168 flow. Second operand 3 states and 124 transitions. [2024-11-22 21:46:51,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 252 flow [2024-11-22 21:46:51,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 240 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 21:46:51,855 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 146 flow [2024-11-22 21:46:51,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-11-22 21:46:51,863 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -9 predicate places. [2024-11-22 21:46:51,863 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 146 flow [2024-11-22 21:46:51,864 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 21:46:51,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:46:51,864 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:46:51,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:46:51,865 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:46:51,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:46:51,866 INFO L85 PathProgramCache]: Analyzing trace with hash 953147, now seen corresponding path program 1 times [2024-11-22 21:46:51,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:46:51,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091247722] [2024-11-22 21:46:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:51,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:46:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:52,097 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 21:46:52,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:46:52,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091247722] [2024-11-22 21:46:52,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091247722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:46:52,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:46:52,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:46:52,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522636063] [2024-11-22 21:46:52,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:46:52,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:46:52,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:46:52,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:46:52,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:46:52,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-22 21:46:52,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2024-11-22 21:46:52,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:46:52,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-22 21:46:52,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:46:53,010 INFO L124 PetriNetUnfolderBase]: 5874/9277 cut-off events. [2024-11-22 21:46:53,010 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-22 21:46:53,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17302 conditions, 9277 events. 5874/9277 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64607 event pairs, 5234 based on Foata normal form. 0/5612 useless extension candidates. Maximal degree in co-relation 17265. Up to 7889 conditions per place. [2024-11-22 21:46:53,069 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 51 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2024-11-22 21:46:53,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 262 flow [2024-11-22 21:46:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:46:53,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:46:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-11-22 21:46:53,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46835443037974683 [2024-11-22 21:46:53,072 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 146 flow. Second operand 4 states and 148 transitions. [2024-11-22 21:46:53,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 262 flow [2024-11-22 21:46:53,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:46:53,075 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 169 flow [2024-11-22 21:46:53,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-11-22 21:46:53,076 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -6 predicate places. [2024-11-22 21:46:53,076 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 169 flow [2024-11-22 21:46:53,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2024-11-22 21:46:53,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:46:53,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-22 21:46:53,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:46:53,078 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:46:53,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:46:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash 29550665, now seen corresponding path program 1 times [2024-11-22 21:46:53,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:46:53,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661381523] [2024-11-22 21:46:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:53,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:46:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:53,260 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 21:46:53,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:46:53,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661381523] [2024-11-22 21:46:53,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661381523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:46:53,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:46:53,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:46:53,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680829324] [2024-11-22 21:46:53,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:46:53,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:46:53,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:46:53,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:46:53,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:46:53,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-22 21:46:53,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 21:46:53,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:46:53,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-22 21:46:53,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:46:54,009 INFO L124 PetriNetUnfolderBase]: 5875/9280 cut-off events. [2024-11-22 21:46:54,010 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-22 21:46:54,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17319 conditions, 9280 events. 5875/9280 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64572 event pairs, 5234 based on Foata normal form. 0/5614 useless extension candidates. Maximal degree in co-relation 17294. Up to 7888 conditions per place. [2024-11-22 21:46:54,060 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 51 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-11-22 21:46:54,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 291 flow [2024-11-22 21:46:54,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:46:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:46:54,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-11-22 21:46:54,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44050632911392407 [2024-11-22 21:46:54,063 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 169 flow. Second operand 5 states and 174 transitions. [2024-11-22 21:46:54,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 291 flow [2024-11-22 21:46:54,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:46:54,065 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 203 flow [2024-11-22 21:46:54,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2024-11-22 21:46:54,066 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-11-22 21:46:54,066 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 203 flow [2024-11-22 21:46:54,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 21:46:54,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:46:54,066 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-22 21:46:54,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:46:54,066 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:46:54,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:46:54,067 INFO L85 PathProgramCache]: Analyzing trace with hash 916003893, now seen corresponding path program 1 times [2024-11-22 21:46:54,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:46:54,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459452330] [2024-11-22 21:46:54,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:54,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:46:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:46:54,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:46:54,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459452330] [2024-11-22 21:46:54,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459452330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:46:54,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645503185] [2024-11-22 21:46:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:54,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:46:54,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:46:54,221 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) [2024-11-22 21:46:54,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:46:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:54,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 21:46:54,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:46:54,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-22 21:46:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:46:54,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:46:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:46:54,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645503185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:46:54,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:46:54,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-22 21:46:54,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142393411] [2024-11-22 21:46:54,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:46:54,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:46:54,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:46:54,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:46:54,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:46:54,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-22 21:46:54,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 203 flow. Second operand has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 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 21:46:54,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:46:54,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-22 21:46:54,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:46:55,671 INFO L124 PetriNetUnfolderBase]: 5875/9279 cut-off events. [2024-11-22 21:46:55,672 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-22 21:46:55,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17332 conditions, 9279 events. 5875/9279 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64597 event pairs, 5234 based on Foata normal form. 0/5616 useless extension candidates. Maximal degree in co-relation 17304. Up to 7888 conditions per place. [2024-11-22 21:46:55,732 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 50 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-11-22 21:46:55,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 73 transitions, 313 flow [2024-11-22 21:46:55,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:46:55,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:46:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-11-22 21:46:55,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40717299578059074 [2024-11-22 21:46:55,734 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 203 flow. Second operand 6 states and 193 transitions. [2024-11-22 21:46:55,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 73 transitions, 313 flow [2024-11-22 21:46:55,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 73 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:46:55,736 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 212 flow [2024-11-22 21:46:55,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2024-11-22 21:46:55,737 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2024-11-22 21:46:55,737 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 212 flow [2024-11-22 21:46:55,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 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 21:46:55,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:46:55,738 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:46:55,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 21:46:55,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:46:55,942 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:46:55,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:46:55,942 INFO L85 PathProgramCache]: Analyzing trace with hash 916072257, now seen corresponding path program 1 times [2024-11-22 21:46:55,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:46:55,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74860716] [2024-11-22 21:46:55,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:55,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:46:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:56,055 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 21:46:56,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:46:56,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74860716] [2024-11-22 21:46:56,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74860716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:46:56,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:46:56,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:46:56,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123197275] [2024-11-22 21:46:56,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:46:56,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:46:56,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:46:56,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:46:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:46:56,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-22 21:46:56,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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 21:46:56,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:46:56,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-22 21:46:56,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:46:56,672 INFO L124 PetriNetUnfolderBase]: 5876/9282 cut-off events. [2024-11-22 21:46:56,673 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-22 21:46:56,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17345 conditions, 9282 events. 5876/9282 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64553 event pairs, 5234 based on Foata normal form. 0/5618 useless extension candidates. Maximal degree in co-relation 17312. Up to 7890 conditions per place. [2024-11-22 21:46:56,735 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 51 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-11-22 21:46:56,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 338 flow [2024-11-22 21:46:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:46:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:46:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-11-22 21:46:56,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4379746835443038 [2024-11-22 21:46:56,737 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 212 flow. Second operand 5 states and 173 transitions. [2024-11-22 21:46:56,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 338 flow [2024-11-22 21:46:56,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 304 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-11-22 21:46:56,739 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 221 flow [2024-11-22 21:46:56,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-11-22 21:46:56,740 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2024-11-22 21:46:56,740 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 221 flow [2024-11-22 21:46:56,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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 21:46:56,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:46:56,741 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-22 21:46:56,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:46:56,741 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:46:56,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:46:56,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1666550379, now seen corresponding path program 1 times [2024-11-22 21:46:56,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:46:56,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413121204] [2024-11-22 21:46:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:56,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:46:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:46:56,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:46:56,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413121204] [2024-11-22 21:46:56,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413121204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:46:56,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237881261] [2024-11-22 21:46:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:56,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:46:56,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:46:56,966 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) [2024-11-22 21:46:56,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:46:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:57,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 21:46:57,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:46:57,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-22 21:46:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:46:57,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:46:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:46:57,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237881261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:46:57,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:46:57,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-22 21:46:57,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693253256] [2024-11-22 21:46:57,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:46:57,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:46:57,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:46:57,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:46:57,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:46:57,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-22 21:46:57,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 221 flow. Second operand has 13 states, 13 states have (on average 24.307692307692307) internal successors, (316), 13 states have internal predecessors, (316), 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 21:46:57,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:46:57,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-22 21:46:57,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:46:58,389 INFO L124 PetriNetUnfolderBase]: 5876/9281 cut-off events. [2024-11-22 21:46:58,389 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-22 21:46:58,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17343 conditions, 9281 events. 5876/9281 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64634 event pairs, 5234 based on Foata normal form. 0/5620 useless extension candidates. Maximal degree in co-relation 17301. Up to 7883 conditions per place. [2024-11-22 21:46:58,461 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 47 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-11-22 21:46:58,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 75 transitions, 335 flow [2024-11-22 21:46:58,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:46:58,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:46:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-11-22 21:46:58,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39421338155515373 [2024-11-22 21:46:58,464 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 221 flow. Second operand 7 states and 218 transitions. [2024-11-22 21:46:58,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 75 transitions, 335 flow [2024-11-22 21:46:58,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:46:58,467 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 234 flow [2024-11-22 21:46:58,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=234, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2024-11-22 21:46:58,467 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-22 21:46:58,468 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 234 flow [2024-11-22 21:46:58,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 24.307692307692307) internal successors, (316), 13 states have internal predecessors, (316), 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 21:46:58,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:46:58,468 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-22 21:46:58,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:46:58,669 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,SelfDestructingSolverStorable5 [2024-11-22 21:46:58,670 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:46:58,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:46:58,670 INFO L85 PathProgramCache]: Analyzing trace with hash -122826944, now seen corresponding path program 1 times [2024-11-22 21:46:58,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:46:58,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710877343] [2024-11-22 21:46:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:58,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:46:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:46:58,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:46:58,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710877343] [2024-11-22 21:46:58,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710877343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:46:58,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680317465] [2024-11-22 21:46:58,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:58,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:46:58,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:46:58,925 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:46:58,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:46:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:59,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 21:46:59,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:46:59,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-22 21:46:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:46:59,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:46:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:46:59,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680317465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:46:59,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:46:59,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-22 21:46:59,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677762538] [2024-11-22 21:46:59,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:46:59,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:46:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:46:59,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:46:59,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:46:59,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-22 21:46:59,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 234 flow. Second operand has 13 states, 13 states have (on average 24.46153846153846) internal successors, (318), 13 states have internal predecessors, (318), 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 21:46:59,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:46:59,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-22 21:46:59,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:00,462 INFO L124 PetriNetUnfolderBase]: 5876/9280 cut-off events. [2024-11-22 21:47:00,462 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-11-22 21:47:00,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17348 conditions, 9280 events. 5876/9280 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64640 event pairs, 5234 based on Foata normal form. 0/5620 useless extension candidates. Maximal degree in co-relation 17303. Up to 7882 conditions per place. [2024-11-22 21:47:00,559 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 43 selfloop transitions, 15 changer transitions 0/74 dead transitions. [2024-11-22 21:47:00,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 74 transitions, 346 flow [2024-11-22 21:47:00,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:47:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:47:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-11-22 21:47:00,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3924050632911392 [2024-11-22 21:47:00,561 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 234 flow. Second operand 7 states and 217 transitions. [2024-11-22 21:47:00,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 74 transitions, 346 flow [2024-11-22 21:47:00,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 74 transitions, 321 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-22 21:47:00,562 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 235 flow [2024-11-22 21:47:00,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-22 21:47:00,563 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-22 21:47:00,563 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 235 flow [2024-11-22 21:47:00,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 24.46153846153846) internal successors, (318), 13 states have internal predecessors, (318), 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 21:47:00,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:00,570 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:00,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:47:00,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:00,772 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:00,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:00,774 INFO L85 PathProgramCache]: Analyzing trace with hash 491685523, now seen corresponding path program 1 times [2024-11-22 21:47:00,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:00,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279271827] [2024-11-22 21:47:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:00,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:00,826 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 21:47:00,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:00,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279271827] [2024-11-22 21:47:00,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279271827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:00,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:00,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:47:00,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761148021] [2024-11-22 21:47:00,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:00,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:47:00,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:00,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:47:00,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:47:00,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-22 21:47:00,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 21:47:00,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:00,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-22 21:47:00,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:01,382 INFO L124 PetriNetUnfolderBase]: 6078/9659 cut-off events. [2024-11-22 21:47:01,383 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-22 21:47:01,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18086 conditions, 9659 events. 6078/9659 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 66914 event pairs, 5421 based on Foata normal form. 99/6059 useless extension candidates. Maximal degree in co-relation 17303. Up to 7891 conditions per place. [2024-11-22 21:47:01,447 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 79 selfloop transitions, 7 changer transitions 1/103 dead transitions. [2024-11-22 21:47:01,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 103 transitions, 516 flow [2024-11-22 21:47:01,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2024-11-22 21:47:01,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5518987341772152 [2024-11-22 21:47:01,449 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 235 flow. Second operand 5 states and 218 transitions. [2024-11-22 21:47:01,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 103 transitions, 516 flow [2024-11-22 21:47:01,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 459 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-22 21:47:01,451 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 261 flow [2024-11-22 21:47:01,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-11-22 21:47:01,452 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-22 21:47:01,452 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 261 flow [2024-11-22 21:47:01,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 21:47:01,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:01,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:01,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:47:01,453 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:01,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:01,453 INFO L85 PathProgramCache]: Analyzing trace with hash -780566055, now seen corresponding path program 1 times [2024-11-22 21:47:01,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:01,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861577886] [2024-11-22 21:47:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:01,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:47:01,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:01,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861577886] [2024-11-22 21:47:01,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861577886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:01,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:01,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:47:01,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483568922] [2024-11-22 21:47:01,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:01,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:47:01,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:01,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:47:01,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:47:01,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-22 21:47:01,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 21:47:01,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:01,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-22 21:47:01,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:02,184 INFO L124 PetriNetUnfolderBase]: 5486/8702 cut-off events. [2024-11-22 21:47:02,185 INFO L125 PetriNetUnfolderBase]: For 610/610 co-relation queries the response was YES. [2024-11-22 21:47:02,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17232 conditions, 8702 events. 5486/8702 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 56880 event pairs, 4815 based on Foata normal form. 0/5755 useless extension candidates. Maximal degree in co-relation 16476. Up to 7296 conditions per place. [2024-11-22 21:47:02,219 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 55 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-11-22 21:47:02,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 373 flow [2024-11-22 21:47:02,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:02,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-11-22 21:47:02,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3949367088607595 [2024-11-22 21:47:02,220 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 261 flow. Second operand 5 states and 156 transitions. [2024-11-22 21:47:02,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 373 flow [2024-11-22 21:47:02,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 368 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:02,222 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 258 flow [2024-11-22 21:47:02,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-11-22 21:47:02,223 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2024-11-22 21:47:02,223 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 258 flow [2024-11-22 21:47:02,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 21:47:02,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:02,223 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:02,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:47:02,224 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:02,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:02,224 INFO L85 PathProgramCache]: Analyzing trace with hash -780566054, now seen corresponding path program 1 times [2024-11-22 21:47:02,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:02,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444861979] [2024-11-22 21:47:02,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:02,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:02,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:02,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444861979] [2024-11-22 21:47:02,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444861979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:02,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:02,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:47:02,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319008120] [2024-11-22 21:47:02,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:02,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:47:02,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:02,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:47:02,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:47:02,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-22 21:47:02,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 21:47:02,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:02,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-22 21:47:02,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:02,817 INFO L124 PetriNetUnfolderBase]: 4465/7142 cut-off events. [2024-11-22 21:47:02,818 INFO L125 PetriNetUnfolderBase]: For 565/565 co-relation queries the response was YES. [2024-11-22 21:47:02,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13815 conditions, 7142 events. 4465/7142 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 45056 event pairs, 3896 based on Foata normal form. 0/4982 useless extension candidates. Maximal degree in co-relation 13023. Up to 5968 conditions per place. [2024-11-22 21:47:02,843 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 56 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-11-22 21:47:02,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 73 transitions, 368 flow [2024-11-22 21:47:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:47:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:47:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-22 21:47:02,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4177215189873418 [2024-11-22 21:47:02,844 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 258 flow. Second operand 4 states and 132 transitions. [2024-11-22 21:47:02,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 73 transitions, 368 flow [2024-11-22 21:47:02,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 359 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:47:02,846 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 247 flow [2024-11-22 21:47:02,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-11-22 21:47:02,846 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2024-11-22 21:47:02,846 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 247 flow [2024-11-22 21:47:02,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 21:47:02,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:02,847 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:02,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 21:47:02,847 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:02,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1572256051, now seen corresponding path program 1 times [2024-11-22 21:47:02,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:02,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406332529] [2024-11-22 21:47:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:02,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:03,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:03,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406332529] [2024-11-22 21:47:03,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406332529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:03,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:03,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:03,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291735460] [2024-11-22 21:47:03,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:03,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:47:03,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:03,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:47:03,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:47:03,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2024-11-22 21:47:03,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 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 21:47:03,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:03,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2024-11-22 21:47:03,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:03,536 INFO L124 PetriNetUnfolderBase]: 4821/7842 cut-off events. [2024-11-22 21:47:03,536 INFO L125 PetriNetUnfolderBase]: For 707/707 co-relation queries the response was YES. [2024-11-22 21:47:03,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15564 conditions, 7842 events. 4821/7842 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 52356 event pairs, 2030 based on Foata normal form. 0/5690 useless extension candidates. Maximal degree in co-relation 14794. Up to 3455 conditions per place. [2024-11-22 21:47:03,563 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 75 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2024-11-22 21:47:03,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 94 transitions, 459 flow [2024-11-22 21:47:03,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:03,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-11-22 21:47:03,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4278481012658228 [2024-11-22 21:47:03,568 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 247 flow. Second operand 5 states and 169 transitions. [2024-11-22 21:47:03,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 94 transitions, 459 flow [2024-11-22 21:47:03,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 94 transitions, 455 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:03,571 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 273 flow [2024-11-22 21:47:03,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-22 21:47:03,571 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-22 21:47:03,571 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 273 flow [2024-11-22 21:47:03,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 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 21:47:03,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:03,572 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:03,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 21:47:03,572 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:03,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:03,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1641737938, now seen corresponding path program 1 times [2024-11-22 21:47:03,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:03,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895199343] [2024-11-22 21:47:03,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:03,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:03,608 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 21:47:03,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:03,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895199343] [2024-11-22 21:47:03,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895199343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:03,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:03,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:47:03,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791340111] [2024-11-22 21:47:03,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:03,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:47:03,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:03,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:47:03,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:47:03,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-22 21:47:03,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 21:47:03,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:03,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-22 21:47:03,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:04,017 INFO L124 PetriNetUnfolderBase]: 4537/7120 cut-off events. [2024-11-22 21:47:04,018 INFO L125 PetriNetUnfolderBase]: For 3395/3395 co-relation queries the response was YES. [2024-11-22 21:47:04,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15723 conditions, 7120 events. 4537/7120 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 44292 event pairs, 1506 based on Foata normal form. 141/5161 useless extension candidates. Maximal degree in co-relation 15433. Up to 4882 conditions per place. [2024-11-22 21:47:04,055 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 75 selfloop transitions, 2 changer transitions 5/96 dead transitions. [2024-11-22 21:47:04,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 96 transitions, 509 flow [2024-11-22 21:47:04,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:47:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:47:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2024-11-22 21:47:04,056 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6160337552742616 [2024-11-22 21:47:04,056 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 273 flow. Second operand 3 states and 146 transitions. [2024-11-22 21:47:04,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 96 transitions, 509 flow [2024-11-22 21:47:04,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 96 transitions, 505 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:04,060 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 244 flow [2024-11-22 21:47:04,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2024-11-22 21:47:04,060 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-22 21:47:04,060 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 244 flow [2024-11-22 21:47:04,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 21:47:04,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:04,061 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:04,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 21:47:04,061 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:04,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:04,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1244505647, now seen corresponding path program 1 times [2024-11-22 21:47:04,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:04,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853166690] [2024-11-22 21:47:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:04,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:47:04,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:04,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853166690] [2024-11-22 21:47:04,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853166690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:04,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:04,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:47:04,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028840381] [2024-11-22 21:47:04,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:04,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:47:04,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:04,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:47:04,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:47:04,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-22 21:47:04,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 21:47:04,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:04,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-22 21:47:04,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:04,483 INFO L124 PetriNetUnfolderBase]: 4250/6614 cut-off events. [2024-11-22 21:47:04,483 INFO L125 PetriNetUnfolderBase]: For 3842/3859 co-relation queries the response was YES. [2024-11-22 21:47:04,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15608 conditions, 6614 events. 4250/6614 cut-off events. For 3842/3859 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 39203 event pairs, 1943 based on Foata normal form. 51/5114 useless extension candidates. Maximal degree in co-relation 15574. Up to 5410 conditions per place. [2024-11-22 21:47:04,518 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 70 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2024-11-22 21:47:04,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 88 transitions, 454 flow [2024-11-22 21:47:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:47:04,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:47:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-22 21:47:04,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5907172995780591 [2024-11-22 21:47:04,519 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 244 flow. Second operand 3 states and 140 transitions. [2024-11-22 21:47:04,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 88 transitions, 454 flow [2024-11-22 21:47:04,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 88 transitions, 444 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:04,522 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 274 flow [2024-11-22 21:47:04,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2024-11-22 21:47:04,523 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-22 21:47:04,523 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 274 flow [2024-11-22 21:47:04,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 21:47:04,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:04,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:04,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 21:47:04,524 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:04,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:04,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1832406174, now seen corresponding path program 1 times [2024-11-22 21:47:04,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:04,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905952046] [2024-11-22 21:47:04,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:04,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:47:04,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:04,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905952046] [2024-11-22 21:47:04,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905952046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:04,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:04,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:47:04,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280748106] [2024-11-22 21:47:04,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:04,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:47:04,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:04,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:47:04,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:47:04,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-22 21:47:04,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 21:47:04,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:04,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-22 21:47:04,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:05,489 INFO L124 PetriNetUnfolderBase]: 6256/9803 cut-off events. [2024-11-22 21:47:05,490 INFO L125 PetriNetUnfolderBase]: For 9070/9094 co-relation queries the response was YES. [2024-11-22 21:47:05,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24831 conditions, 9803 events. 6256/9803 cut-off events. For 9070/9094 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 62197 event pairs, 4579 based on Foata normal form. 191/7820 useless extension candidates. Maximal degree in co-relation 24796. Up to 5787 conditions per place. [2024-11-22 21:47:05,553 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 87 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-22 21:47:05,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 105 transitions, 592 flow [2024-11-22 21:47:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:47:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:47:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-11-22 21:47:05,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822784810126582 [2024-11-22 21:47:05,555 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 274 flow. Second operand 4 states and 184 transitions. [2024-11-22 21:47:05,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 105 transitions, 592 flow [2024-11-22 21:47:05,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 105 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:47:05,561 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 291 flow [2024-11-22 21:47:05,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2024-11-22 21:47:05,562 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2024-11-22 21:47:05,562 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 291 flow [2024-11-22 21:47:05,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 21:47:05,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:05,562 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:05,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 21:47:05,562 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:05,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:05,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2123162883, now seen corresponding path program 1 times [2024-11-22 21:47:05,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:05,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581713063] [2024-11-22 21:47:05,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:05,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:47:05,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:05,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581713063] [2024-11-22 21:47:05,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581713063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:05,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310379685] [2024-11-22 21:47:05,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:05,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:05,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:05,743 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:47:05,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:47:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:05,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 21:47:05,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:47:05,895 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 21:47:05,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310379685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:05,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 21:47:05,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-22 21:47:05,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416847602] [2024-11-22 21:47:05,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:05,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:05,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:05,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:05,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-22 21:47:05,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-22 21:47:05,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 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 21:47:05,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:05,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-22 21:47:05,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:06,736 INFO L124 PetriNetUnfolderBase]: 5628/8873 cut-off events. [2024-11-22 21:47:06,736 INFO L125 PetriNetUnfolderBase]: For 8663/8687 co-relation queries the response was YES. [2024-11-22 21:47:06,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23081 conditions, 8873 events. 5628/8873 cut-off events. For 8663/8687 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 55597 event pairs, 4062 based on Foata normal form. 0/7084 useless extension candidates. Maximal degree in co-relation 23045. Up to 7785 conditions per place. [2024-11-22 21:47:06,798 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 53 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2024-11-22 21:47:06,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 71 transitions, 397 flow [2024-11-22 21:47:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:47:06,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:47:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-11-22 21:47:06,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47151898734177217 [2024-11-22 21:47:06,800 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 291 flow. Second operand 4 states and 149 transitions. [2024-11-22 21:47:06,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 71 transitions, 397 flow [2024-11-22 21:47:06,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 71 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:47:06,804 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 288 flow [2024-11-22 21:47:06,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-11-22 21:47:06,805 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2024-11-22 21:47:06,805 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 288 flow [2024-11-22 21:47:06,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 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 21:47:06,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:06,806 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:06,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 21:47:07,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 21:47:07,007 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:07,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:07,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2123162882, now seen corresponding path program 1 times [2024-11-22 21:47:07,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:07,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413097656] [2024-11-22 21:47:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:07,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:47:07,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:07,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413097656] [2024-11-22 21:47:07,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413097656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:07,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:07,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:47:07,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585192514] [2024-11-22 21:47:07,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:07,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:47:07,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:07,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:47:07,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:47:07,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-22 21:47:07,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 21:47:07,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:07,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-22 21:47:07,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:07,803 INFO L124 PetriNetUnfolderBase]: 5050/8013 cut-off events. [2024-11-22 21:47:07,803 INFO L125 PetriNetUnfolderBase]: For 8155/8179 co-relation queries the response was YES. [2024-11-22 21:47:07,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20819 conditions, 8013 events. 5050/8013 cut-off events. For 8155/8179 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 49755 event pairs, 3591 based on Foata normal form. 0/6568 useless extension candidates. Maximal degree in co-relation 20783. Up to 6985 conditions per place. [2024-11-22 21:47:07,851 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 52 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-11-22 21:47:07,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 69 transitions, 390 flow [2024-11-22 21:47:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:47:07,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:47:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-22 21:47:07,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4272151898734177 [2024-11-22 21:47:07,853 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 288 flow. Second operand 4 states and 135 transitions. [2024-11-22 21:47:07,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 69 transitions, 390 flow [2024-11-22 21:47:07,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 69 transitions, 384 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:07,857 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 280 flow [2024-11-22 21:47:07,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-11-22 21:47:07,857 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2024-11-22 21:47:07,857 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 280 flow [2024-11-22 21:47:07,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 21:47:07,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:07,858 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:07,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 21:47:07,858 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:07,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:07,858 INFO L85 PathProgramCache]: Analyzing trace with hash -11242019, now seen corresponding path program 1 times [2024-11-22 21:47:07,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:07,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671176739] [2024-11-22 21:47:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:47:07,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:07,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671176739] [2024-11-22 21:47:07,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671176739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:07,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:07,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:47:07,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139655223] [2024-11-22 21:47:07,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:07,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:47:07,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:07,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:47:07,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:47:07,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-22 21:47:07,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 21:47:07,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:07,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-22 21:47:07,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:08,581 INFO L124 PetriNetUnfolderBase]: 6098/9931 cut-off events. [2024-11-22 21:47:08,581 INFO L125 PetriNetUnfolderBase]: For 10099/10147 co-relation queries the response was YES. [2024-11-22 21:47:08,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25750 conditions, 9931 events. 6098/9931 cut-off events. For 10099/10147 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 64896 event pairs, 4371 based on Foata normal form. 212/8557 useless extension candidates. Maximal degree in co-relation 25713. Up to 6999 conditions per place. [2024-11-22 21:47:08,625 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 52 selfloop transitions, 2 changer transitions 31/99 dead transitions. [2024-11-22 21:47:08,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 99 transitions, 592 flow [2024-11-22 21:47:08,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:47:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:47:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-11-22 21:47:08,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5474683544303798 [2024-11-22 21:47:08,627 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 280 flow. Second operand 4 states and 173 transitions. [2024-11-22 21:47:08,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 99 transitions, 592 flow [2024-11-22 21:47:08,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 99 transitions, 586 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:08,630 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 280 flow [2024-11-22 21:47:08,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-11-22 21:47:08,631 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2024-11-22 21:47:08,631 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 280 flow [2024-11-22 21:47:08,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 21:47:08,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:08,631 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:08,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 21:47:08,632 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:08,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:08,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2111060649, now seen corresponding path program 1 times [2024-11-22 21:47:08,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:08,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796824313] [2024-11-22 21:47:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:08,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:47:08,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:08,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796824313] [2024-11-22 21:47:08,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796824313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:08,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:08,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:47:08,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503136648] [2024-11-22 21:47:08,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:08,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:47:08,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:08,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:47:08,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:47:08,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-22 21:47:08,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 21:47:08,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:08,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-22 21:47:08,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:09,117 INFO L124 PetriNetUnfolderBase]: 3719/6140 cut-off events. [2024-11-22 21:47:09,118 INFO L125 PetriNetUnfolderBase]: For 6412/6436 co-relation queries the response was YES. [2024-11-22 21:47:09,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16213 conditions, 6140 events. 3719/6140 cut-off events. For 6412/6436 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 38126 event pairs, 2600 based on Foata normal form. 0/5412 useless extension candidates. Maximal degree in co-relation 16175. Up to 5170 conditions per place. [2024-11-22 21:47:09,153 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 48 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-22 21:47:09,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 66 transitions, 376 flow [2024-11-22 21:47:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-11-22 21:47:09,154 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3949367088607595 [2024-11-22 21:47:09,154 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 280 flow. Second operand 5 states and 156 transitions. [2024-11-22 21:47:09,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 66 transitions, 376 flow [2024-11-22 21:47:09,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 66 transitions, 370 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:09,162 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 274 flow [2024-11-22 21:47:09,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=274, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-11-22 21:47:09,162 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2024-11-22 21:47:09,162 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 274 flow [2024-11-22 21:47:09,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 21:47:09,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:09,163 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:09,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 21:47:09,163 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:09,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:09,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2111060650, now seen corresponding path program 1 times [2024-11-22 21:47:09,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:09,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177711740] [2024-11-22 21:47:09,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:09,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:47:09,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:09,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177711740] [2024-11-22 21:47:09,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177711740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:09,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:09,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:47:09,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590812813] [2024-11-22 21:47:09,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:09,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:09,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:09,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:09,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:09,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-22 21:47:09,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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 21:47:09,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:09,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-22 21:47:09,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:09,689 INFO L124 PetriNetUnfolderBase]: 2591/4542 cut-off events. [2024-11-22 21:47:09,689 INFO L125 PetriNetUnfolderBase]: For 4375/4399 co-relation queries the response was YES. [2024-11-22 21:47:09,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11507 conditions, 4542 events. 2591/4542 cut-off events. For 4375/4399 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 28577 event pairs, 1771 based on Foata normal form. 286/4383 useless extension candidates. Maximal degree in co-relation 11469. Up to 3634 conditions per place. [2024-11-22 21:47:09,710 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 47 selfloop transitions, 2 changer transitions 1/64 dead transitions. [2024-11-22 21:47:09,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 64 transitions, 368 flow [2024-11-22 21:47:09,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:47:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:47:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-22 21:47:09,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41455696202531644 [2024-11-22 21:47:09,711 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 274 flow. Second operand 4 states and 131 transitions. [2024-11-22 21:47:09,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 64 transitions, 368 flow [2024-11-22 21:47:09,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 64 transitions, 362 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:47:09,714 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 256 flow [2024-11-22 21:47:09,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-11-22 21:47:09,714 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-22 21:47:09,715 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 256 flow [2024-11-22 21:47:09,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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 21:47:09,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:09,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:09,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 21:47:09,715 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:09,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:09,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1774662268, now seen corresponding path program 1 times [2024-11-22 21:47:09,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:09,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853555046] [2024-11-22 21:47:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:09,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:47:09,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:09,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853555046] [2024-11-22 21:47:09,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853555046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:09,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:09,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:47:09,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287099473] [2024-11-22 21:47:09,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:09,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:47:09,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:09,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:47:09,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:47:09,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-22 21:47:09,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 21:47:09,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:09,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-22 21:47:09,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:10,085 INFO L124 PetriNetUnfolderBase]: 2859/4936 cut-off events. [2024-11-22 21:47:10,085 INFO L125 PetriNetUnfolderBase]: For 4471/4483 co-relation queries the response was YES. [2024-11-22 21:47:10,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12369 conditions, 4936 events. 2859/4936 cut-off events. For 4471/4483 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 30540 event pairs, 1092 based on Foata normal form. 1/4477 useless extension candidates. Maximal degree in co-relation 12331. Up to 2024 conditions per place. [2024-11-22 21:47:10,108 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 68 selfloop transitions, 2 changer transitions 8/92 dead transitions. [2024-11-22 21:47:10,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 92 transitions, 533 flow [2024-11-22 21:47:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:47:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:47:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-22 21:47:10,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5907172995780591 [2024-11-22 21:47:10,109 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 256 flow. Second operand 3 states and 140 transitions. [2024-11-22 21:47:10,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 92 transitions, 533 flow [2024-11-22 21:47:10,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:10,113 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 259 flow [2024-11-22 21:47:10,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-11-22 21:47:10,113 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-22 21:47:10,113 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 259 flow [2024-11-22 21:47:10,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 21:47:10,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:10,114 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:10,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 21:47:10,114 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:10,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1896191983, now seen corresponding path program 1 times [2024-11-22 21:47:10,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:10,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159217488] [2024-11-22 21:47:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:10,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:47:10,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:10,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159217488] [2024-11-22 21:47:10,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159217488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:10,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:10,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:47:10,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663292544] [2024-11-22 21:47:10,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:10,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:47:10,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:10,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:47:10,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:47:10,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-22 21:47:10,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 21:47:10,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:10,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-22 21:47:10,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:10,444 INFO L124 PetriNetUnfolderBase]: 2403/4436 cut-off events. [2024-11-22 21:47:10,445 INFO L125 PetriNetUnfolderBase]: For 3667/3681 co-relation queries the response was YES. [2024-11-22 21:47:10,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10755 conditions, 4436 events. 2403/4436 cut-off events. For 3667/3681 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 29064 event pairs, 945 based on Foata normal form. 140/4142 useless extension candidates. Maximal degree in co-relation 10716. Up to 1669 conditions per place. [2024-11-22 21:47:10,471 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 58 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-11-22 21:47:10,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 75 transitions, 403 flow [2024-11-22 21:47:10,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:47:10,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:47:10,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-22 21:47:10,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5485232067510548 [2024-11-22 21:47:10,472 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 259 flow. Second operand 3 states and 130 transitions. [2024-11-22 21:47:10,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 75 transitions, 403 flow [2024-11-22 21:47:10,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 396 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:10,477 INFO L231 Difference]: Finished difference. Result has 80 places, 61 transitions, 243 flow [2024-11-22 21:47:10,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=80, PETRI_TRANSITIONS=61} [2024-11-22 21:47:10,477 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2024-11-22 21:47:10,478 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 61 transitions, 243 flow [2024-11-22 21:47:10,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 21:47:10,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:10,478 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:10,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 21:47:10,478 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-22 21:47:10,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:10,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1046242646, now seen corresponding path program 1 times [2024-11-22 21:47:10,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:10,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291920290] [2024-11-22 21:47:10,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:10,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:47:10,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:10,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291920290] [2024-11-22 21:47:10,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291920290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:10,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299292649] [2024-11-22 21:47:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:10,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:10,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:10,542 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:47:10,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:47:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:10,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 21:47:10,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:10,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2024-11-22 21:47:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:47:10,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:47:10,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299292649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:10,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:10,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-22 21:47:10,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855896650] [2024-11-22 21:47:10,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:10,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:47:10,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:10,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:47:10,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:47:10,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-11-22 21:47:10,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 61 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 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 21:47:10,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:10,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-11-22 21:47:10,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:11,081 INFO L124 PetriNetUnfolderBase]: 2219/3997 cut-off events. [2024-11-22 21:47:11,082 INFO L125 PetriNetUnfolderBase]: For 3314/3314 co-relation queries the response was YES. [2024-11-22 21:47:11,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9550 conditions, 3997 events. 2219/3997 cut-off events. For 3314/3314 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 25104 event pairs, 722 based on Foata normal form. 0/3680 useless extension candidates. Maximal degree in co-relation 9510. Up to 1305 conditions per place. [2024-11-22 21:47:11,091 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 0 selfloop transitions, 0 changer transitions 103/103 dead transitions. [2024-11-22 21:47:11,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 103 transitions, 549 flow [2024-11-22 21:47:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-11-22 21:47:11,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5189873417721519 [2024-11-22 21:47:11,093 INFO L175 Difference]: Start difference. First operand has 80 places, 61 transitions, 243 flow. Second operand 5 states and 205 transitions. [2024-11-22 21:47:11,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 103 transitions, 549 flow [2024-11-22 21:47:11,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 103 transitions, 540 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:47:11,095 INFO L231 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2024-11-22 21:47:11,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2024-11-22 21:47:11,096 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-22 21:47:11,096 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2024-11-22 21:47:11,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 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 21:47:11,098 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 39 remaining) [2024-11-22 21:47:11,098 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 39 remaining) [2024-11-22 21:47:11,098 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 39 remaining) [2024-11-22 21:47:11,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 39 remaining) [2024-11-22 21:47:11,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 39 remaining) [2024-11-22 21:47:11,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 39 remaining) [2024-11-22 21:47:11,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 39 remaining) [2024-11-22 21:47:11,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 39 remaining) [2024-11-22 21:47:11,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 39 remaining) [2024-11-22 21:47:11,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 39 remaining) [2024-11-22 21:47:11,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 39 remaining) [2024-11-22 21:47:11,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 39 remaining) [2024-11-22 21:47:11,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 39 remaining) [2024-11-22 21:47:11,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 39 remaining) [2024-11-22 21:47:11,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 39 remaining) [2024-11-22 21:47:11,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 39 remaining) [2024-11-22 21:47:11,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 39 remaining) [2024-11-22 21:47:11,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 39 remaining) [2024-11-22 21:47:11,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 39 remaining) [2024-11-22 21:47:11,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 39 remaining) [2024-11-22 21:47:11,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (18 of 39 remaining) [2024-11-22 21:47:11,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (17 of 39 remaining) [2024-11-22 21:47:11,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 39 remaining) [2024-11-22 21:47:11,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 39 remaining) [2024-11-22 21:47:11,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 39 remaining) [2024-11-22 21:47:11,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 39 remaining) [2024-11-22 21:47:11,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 39 remaining) [2024-11-22 21:47:11,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 39 remaining) [2024-11-22 21:47:11,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 39 remaining) [2024-11-22 21:47:11,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 39 remaining) [2024-11-22 21:47:11,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 39 remaining) [2024-11-22 21:47:11,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 39 remaining) [2024-11-22 21:47:11,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 39 remaining) [2024-11-22 21:47:11,102 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 39 remaining) [2024-11-22 21:47:11,102 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 39 remaining) [2024-11-22 21:47:11,102 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 39 remaining) [2024-11-22 21:47:11,102 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 39 remaining) [2024-11-22 21:47:11,102 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 39 remaining) [2024-11-22 21:47:11,102 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 39 remaining) [2024-11-22 21:47:11,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 21:47:11,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-22 21:47:11,303 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:11,308 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-22 21:47:11,308 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 21:47:11,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 09:47:11 BasicIcfg [2024-11-22 21:47:11,314 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 21:47:11,314 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 21:47:11,314 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 21:47:11,314 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 21:47:11,315 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:46:50" (3/4) ... [2024-11-22 21:47:11,316 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 21:47:11,318 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-22 21:47:11,318 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-22 21:47:11,318 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-22 21:47:11,324 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 191 nodes and edges [2024-11-22 21:47:11,324 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2024-11-22 21:47:11,324 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-22 21:47:11,325 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 21:47:11,414 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 21:47:11,415 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 21:47:11,415 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 21:47:11,416 INFO L158 Benchmark]: Toolchain (without parser) took 22381.79ms. Allocated memory was 161.5MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 91.7MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 173.3MB. Max. memory is 16.1GB. [2024-11-22 21:47:11,416 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 161.5MB. Free memory was 120.6MB in the beginning and 120.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 21:47:11,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.96ms. Allocated memory is still 161.5MB. Free memory was 91.5MB in the beginning and 131.3MB in the end (delta: -39.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-22 21:47:11,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.73ms. Allocated memory is still 161.5MB. Free memory was 131.3MB in the beginning and 127.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 21:47:11,416 INFO L158 Benchmark]: Boogie Preprocessor took 70.35ms. Allocated memory is still 161.5MB. Free memory was 127.9MB in the beginning and 125.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 21:47:11,417 INFO L158 Benchmark]: RCFGBuilder took 770.25ms. Allocated memory is still 161.5MB. Free memory was 125.0MB in the beginning and 107.2MB in the end (delta: 17.9MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. [2024-11-22 21:47:11,417 INFO L158 Benchmark]: TraceAbstraction took 21041.06ms. Allocated memory was 161.5MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 106.2MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2024-11-22 21:47:11,417 INFO L158 Benchmark]: Witness Printer took 100.94ms. Allocated memory is still 3.1GB. Free memory was 2.9GB in the beginning and 2.9GB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-22 21:47:11,418 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 161.5MB. Free memory was 120.6MB in the beginning and 120.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.96ms. Allocated memory is still 161.5MB. Free memory was 91.5MB in the beginning and 131.3MB in the end (delta: -39.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.73ms. Allocated memory is still 161.5MB. Free memory was 131.3MB in the beginning and 127.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.35ms. Allocated memory is still 161.5MB. Free memory was 127.9MB in the beginning and 125.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 770.25ms. Allocated memory is still 161.5MB. Free memory was 125.0MB in the beginning and 107.2MB in the end (delta: 17.9MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. * TraceAbstraction took 21041.06ms. Allocated memory was 161.5MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 106.2MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Witness Printer took 100.94ms. Allocated memory is still 3.1GB. Free memory was 2.9GB in the beginning and 2.9GB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 123]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 39 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: 20.9s, OverallIterations: 22, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 15.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1475 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1257 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 109 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4206 IncrementalHoareTripleChecker+Invalid, 4315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 109 mSolverCounterUnsat, 49 mSDtfsCounter, 4206 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=14, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 418 NumberOfCodeBlocks, 418 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 457 ConstructedInterpolants, 2 QuantifiedInterpolants, 2915 SizeOfPredicates, 16 NumberOfNonLiveVariables, 915 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 31 InterpolantComputations, 18 PerfectInterpolantSequences, 52/71 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 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-22 21:47:11,437 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