./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.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 6b30bad195dde021066febd52c7985271e0448c265b66e6efcbd9c3306420e73 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:26:57,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:26:57,271 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:26:57,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:26:57,277 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:26:57,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:26:57,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:26:57,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:26:57,314 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:26:57,315 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:26:57,315 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:26:57,315 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:26:57,316 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:26:57,316 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:26:57,317 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:26:57,318 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:26:57,318 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:26:57,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:26:57,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:26:57,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:26:57,318 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:26:57,321 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:26:57,321 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:26:57,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:26:57,322 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:26:57,322 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:26:57,322 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:26:57,322 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:26:57,322 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:26:57,322 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:26:57,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:26:57,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:26:57,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:26:57,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:26:57,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:26:57,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:26:57,323 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:26:57,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:26:57,324 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:26:57,324 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:26:57,324 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:26:57,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:26:57,325 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b30bad195dde021066febd52c7985271e0448c265b66e6efcbd9c3306420e73 [2024-11-12 16:26:57,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:26:57,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:26:57,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:26:57,562 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:26:57,562 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:26:57,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2024-11-12 16:26:58,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:26:59,015 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:26:59,016 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2024-11-12 16:26:59,026 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074214293/6c57c6eb57b141f09ba37351e1873445/FLAG3a3900cb1 [2024-11-12 16:26:59,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074214293/6c57c6eb57b141f09ba37351e1873445 [2024-11-12 16:26:59,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:26:59,045 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:26:59,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:26:59,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:26:59,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:26:59,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7f8aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59, skipping insertion in model container [2024-11-12 16:26:59,055 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,075 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:26:59,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:26:59,274 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:26:59,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:26:59,301 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:26:59,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59 WrapperNode [2024-11-12 16:26:59,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:26:59,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:26:59,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:26:59,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:26:59,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,354 INFO L138 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 50 [2024-11-12 16:26:59,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:26:59,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:26:59,355 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:26:59,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:26:59,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,377 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-12 16:26:59,377 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,381 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,389 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,395 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,397 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:26:59,399 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:26:59,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:26:59,400 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:26:59,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59" (1/1) ... [2024-11-12 16:26:59,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:26:59,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:26:59,439 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) [2024-11-12 16:26:59,445 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 [2024-11-12 16:26:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:26:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 16:26:59,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 16:26:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 16:26:59,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 16:26:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:26:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 16:26:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 16:26:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:26:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:26:59,505 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:26:59,600 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:26:59,603 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:26:59,808 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:26:59,809 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:27:00,046 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:27:00,046 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 16:27:00,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:27:00 BoogieIcfgContainer [2024-11-12 16:27:00,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:27:00,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:27:00,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:27:00,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:27:00,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:26:59" (1/3) ... [2024-11-12 16:27:00,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2840daa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:27:00, skipping insertion in model container [2024-11-12 16:27:00,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:59" (2/3) ... [2024-11-12 16:27:00,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2840daa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:27:00, skipping insertion in model container [2024-11-12 16:27:00,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:27:00" (3/3) ... [2024-11-12 16:27:00,066 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2024-11-12 16:27:00,102 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:27:00,102 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 16:27:00,102 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:27:00,189 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 16:27:00,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 27 transitions, 68 flow [2024-11-12 16:27:00,302 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-12 16:27:00,302 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:27:00,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 25 events. 2/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-11-12 16:27:00,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 27 transitions, 68 flow [2024-11-12 16:27:00,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 24 transitions, 60 flow [2024-11-12 16:27:00,334 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:27:00,348 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;@4126629, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:27:00,348 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 16:27:00,367 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:27:00,367 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-11-12 16:27:00,367 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:27:00,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:00,371 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:00,371 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:27:00,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:00,384 INFO L85 PathProgramCache]: Analyzing trace with hash -234913753, now seen corresponding path program 1 times [2024-11-12 16:27:00,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:00,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191584161] [2024-11-12 16:27:00,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:00,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:01,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:01,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191584161] [2024-11-12 16:27:01,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191584161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:01,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:01,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 16:27:01,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195569855] [2024-11-12 16:27:01,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:01,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:27:01,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:01,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:27:01,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:27:01,113 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2024-11-12 16:27:01,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:01,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:01,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2024-11-12 16:27:01,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:01,235 INFO L124 PetriNetUnfolderBase]: 104/206 cut-off events. [2024-11-12 16:27:01,235 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-12 16:27:01,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 206 events. 104/206 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 764 event pairs, 8 based on Foata normal form. 13/214 useless extension candidates. Maximal degree in co-relation 366. Up to 117 conditions per place. [2024-11-12 16:27:01,241 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 29 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2024-11-12 16:27:01,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 175 flow [2024-11-12 16:27:01,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:27:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:27:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-11-12 16:27:01,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-11-12 16:27:01,255 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 5 states and 88 transitions. [2024-11-12 16:27:01,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 175 flow [2024-11-12 16:27:01,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 161 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 16:27:01,260 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 93 flow [2024-11-12 16:27:01,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2024-11-12 16:27:01,267 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-11-12 16:27:01,267 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 93 flow [2024-11-12 16:27:01,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:01,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:01,267 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:01,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:27:01,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:27:01,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:01,268 INFO L85 PathProgramCache]: Analyzing trace with hash 188808021, now seen corresponding path program 1 times [2024-11-12 16:27:01,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:01,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014313760] [2024-11-12 16:27:01,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:01,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:27:01,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:01,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014313760] [2024-11-12 16:27:01,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014313760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:01,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:01,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 16:27:01,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494469617] [2024-11-12 16:27:01,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:01,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:27:01,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:01,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:27:01,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:27:01,458 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2024-11-12 16:27:01,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2024-11-12 16:27:01,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:01,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2024-11-12 16:27:01,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:01,558 INFO L124 PetriNetUnfolderBase]: 116/238 cut-off events. [2024-11-12 16:27:01,558 INFO L125 PetriNetUnfolderBase]: For 194/203 co-relation queries the response was YES. [2024-11-12 16:27:01,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 238 events. 116/238 cut-off events. For 194/203 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1029 event pairs, 11 based on Foata normal form. 18/243 useless extension candidates. Maximal degree in co-relation 234. Up to 124 conditions per place. [2024-11-12 16:27:01,562 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 26 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-11-12 16:27:01,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 195 flow [2024-11-12 16:27:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:27:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:27:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-12 16:27:01,564 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-12 16:27:01,564 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 93 flow. Second operand 4 states and 66 transitions. [2024-11-12 16:27:01,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 195 flow [2024-11-12 16:27:01,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:27:01,566 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 104 flow [2024-11-12 16:27:01,566 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-12 16:27:01,567 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-11-12 16:27:01,568 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 104 flow [2024-11-12 16:27:01,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2024-11-12 16:27:01,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:01,569 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:01,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 16:27:01,569 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:27:01,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:01,570 INFO L85 PathProgramCache]: Analyzing trace with hash 44148424, now seen corresponding path program 1 times [2024-11-12 16:27:01,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:01,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759373825] [2024-11-12 16:27:01,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:01,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:01,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:01,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759373825] [2024-11-12 16:27:01,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759373825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:01,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:01,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 16:27:01,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320684711] [2024-11-12 16:27:01,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:01,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:27:01,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:01,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:27:01,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:27:01,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2024-11-12 16:27:01,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:01,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:01,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2024-11-12 16:27:01,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:01,846 INFO L124 PetriNetUnfolderBase]: 116/241 cut-off events. [2024-11-12 16:27:01,846 INFO L125 PetriNetUnfolderBase]: For 180/207 co-relation queries the response was YES. [2024-11-12 16:27:01,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 241 events. 116/241 cut-off events. For 180/207 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 983 event pairs, 15 based on Foata normal form. 23/260 useless extension candidates. Maximal degree in co-relation 298. Up to 83 conditions per place. [2024-11-12 16:27:01,850 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 30 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-11-12 16:27:01,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 238 flow [2024-11-12 16:27:01,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:27:01,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:27:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-11-12 16:27:01,853 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-11-12 16:27:01,853 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 104 flow. Second operand 5 states and 84 transitions. [2024-11-12 16:27:01,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 238 flow [2024-11-12 16:27:01,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 233 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:27:01,855 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 150 flow [2024-11-12 16:27:01,855 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-11-12 16:27:01,856 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-11-12 16:27:01,856 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 150 flow [2024-11-12 16:27:01,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:01,858 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:01,858 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:01,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 16:27:01,859 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:27:01,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:01,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1872370852, now seen corresponding path program 2 times [2024-11-12 16:27:01,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:01,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067210676] [2024-11-12 16:27:01,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:01,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:02,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:02,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:02,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067210676] [2024-11-12 16:27:02,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067210676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:02,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:02,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 16:27:02,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922185797] [2024-11-12 16:27:02,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:02,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 16:27:02,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:02,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 16:27:02,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 16:27:02,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-12 16:27:02,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 150 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-12 16:27:02,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:02,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-12 16:27:02,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:02,872 INFO L124 PetriNetUnfolderBase]: 247/474 cut-off events. [2024-11-12 16:27:02,872 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2024-11-12 16:27:02,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 474 events. 247/474 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1993 event pairs, 17 based on Foata normal form. 2/475 useless extension candidates. Maximal degree in co-relation 567. Up to 262 conditions per place. [2024-11-12 16:27:02,875 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 41 selfloop transitions, 22 changer transitions 16/84 dead transitions. [2024-11-12 16:27:02,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 84 transitions, 516 flow [2024-11-12 16:27:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 16:27:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 16:27:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 197 transitions. [2024-11-12 16:27:02,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48641975308641977 [2024-11-12 16:27:02,877 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 150 flow. Second operand 15 states and 197 transitions. [2024-11-12 16:27:02,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 84 transitions, 516 flow [2024-11-12 16:27:02,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 84 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:27:02,881 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 316 flow [2024-11-12 16:27:02,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=316, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-11-12 16:27:02,881 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-11-12 16:27:02,881 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 316 flow [2024-11-12 16:27:02,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-12 16:27:02,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:02,882 INFO L206 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] [2024-11-12 16:27:02,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 16:27:02,882 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:27:02,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1632361114, now seen corresponding path program 1 times [2024-11-12 16:27:02,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:02,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794279281] [2024-11-12 16:27:02,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:02,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:03,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:03,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794279281] [2024-11-12 16:27:03,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794279281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:03,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:03,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:27:03,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304708430] [2024-11-12 16:27:03,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:03,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 16:27:03,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:03,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 16:27:03,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 16:27:03,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2024-11-12 16:27:03,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:03,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:03,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2024-11-12 16:27:03,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:03,194 INFO L124 PetriNetUnfolderBase]: 408/848 cut-off events. [2024-11-12 16:27:03,194 INFO L125 PetriNetUnfolderBase]: For 2878/2886 co-relation queries the response was YES. [2024-11-12 16:27:03,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 848 events. 408/848 cut-off events. For 2878/2886 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4376 event pairs, 35 based on Foata normal form. 18/857 useless extension candidates. Maximal degree in co-relation 2365. Up to 228 conditions per place. [2024-11-12 16:27:03,200 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 64 selfloop transitions, 32 changer transitions 0/107 dead transitions. [2024-11-12 16:27:03,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 107 transitions, 871 flow [2024-11-12 16:27:03,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 16:27:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 16:27:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-11-12 16:27:03,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6931216931216931 [2024-11-12 16:27:03,202 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 316 flow. Second operand 7 states and 131 transitions. [2024-11-12 16:27:03,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 107 transitions, 871 flow [2024-11-12 16:27:03,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 107 transitions, 790 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-11-12 16:27:03,209 INFO L231 Difference]: Finished difference. Result has 61 places, 69 transitions, 545 flow [2024-11-12 16:27:03,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=61, PETRI_TRANSITIONS=69} [2024-11-12 16:27:03,210 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-11-12 16:27:03,210 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 69 transitions, 545 flow [2024-11-12 16:27:03,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:03,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:03,211 INFO L206 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] [2024-11-12 16:27:03,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 16:27:03,211 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:27:03,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:03,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1520897742, now seen corresponding path program 2 times [2024-11-12 16:27:03,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:03,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078301455] [2024-11-12 16:27:03,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:03,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:03,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:03,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078301455] [2024-11-12 16:27:03,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078301455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:03,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:03,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 16:27:03,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993669972] [2024-11-12 16:27:03,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:03,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 16:27:03,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:03,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 16:27:03,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-12 16:27:03,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-12 16:27:03,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 69 transitions, 545 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 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) [2024-11-12 16:27:03,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:03,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-12 16:27:03,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:05,690 INFO L124 PetriNetUnfolderBase]: 657/1265 cut-off events. [2024-11-12 16:27:05,690 INFO L125 PetriNetUnfolderBase]: For 6128/6128 co-relation queries the response was YES. [2024-11-12 16:27:05,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5408 conditions, 1265 events. 657/1265 cut-off events. For 6128/6128 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6501 event pairs, 54 based on Foata normal form. 5/1269 useless extension candidates. Maximal degree in co-relation 3959. Up to 768 conditions per place. [2024-11-12 16:27:05,699 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 65 selfloop transitions, 55 changer transitions 20/145 dead transitions. [2024-11-12 16:27:05,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 145 transitions, 1361 flow [2024-11-12 16:27:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 16:27:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 16:27:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 229 transitions. [2024-11-12 16:27:05,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4989106753812636 [2024-11-12 16:27:05,701 INFO L175 Difference]: Start difference. First operand has 61 places, 69 transitions, 545 flow. Second operand 17 states and 229 transitions. [2024-11-12 16:27:05,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 145 transitions, 1361 flow [2024-11-12 16:27:05,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 145 transitions, 1299 flow, removed 31 selfloop flow, removed 0 redundant places. [2024-11-12 16:27:05,711 INFO L231 Difference]: Finished difference. Result has 86 places, 97 transitions, 975 flow [2024-11-12 16:27:05,711 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=975, PETRI_PLACES=86, PETRI_TRANSITIONS=97} [2024-11-12 16:27:05,712 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-11-12 16:27:05,712 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 97 transitions, 975 flow [2024-11-12 16:27:05,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 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) [2024-11-12 16:27:05,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:05,712 INFO L206 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] [2024-11-12 16:27:05,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 16:27:05,713 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:27:05,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:05,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1767736542, now seen corresponding path program 3 times [2024-11-12 16:27:05,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:05,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399842474] [2024-11-12 16:27:05,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:05,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:06,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:06,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399842474] [2024-11-12 16:27:06,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399842474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:27:06,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253117708] [2024-11-12 16:27:06,175 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:27:06,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:27:06,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:27:06,178 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) [2024-11-12 16:27:06,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 16:27:06,248 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:27:06,248 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:27:06,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-12 16:27:06,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:27:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:06,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:27:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:07,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253117708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:27:07,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:27:07,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2024-11-12 16:27:07,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918815256] [2024-11-12 16:27:07,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:27:07,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 16:27:07,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:07,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 16:27:07,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2024-11-12 16:27:07,822 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-12 16:27:07,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 97 transitions, 975 flow. Second operand has 23 states, 23 states have (on average 10.869565217391305) internal successors, (250), 23 states have internal predecessors, (250), 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) [2024-11-12 16:27:07,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:07,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-12 16:27:07,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:11,632 INFO L124 PetriNetUnfolderBase]: 1451/2979 cut-off events. [2024-11-12 16:27:11,632 INFO L125 PetriNetUnfolderBase]: For 21135/21195 co-relation queries the response was YES. [2024-11-12 16:27:11,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13963 conditions, 2979 events. 1451/2979 cut-off events. For 21135/21195 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 20228 event pairs, 36 based on Foata normal form. 32/2989 useless extension candidates. Maximal degree in co-relation 12825. Up to 715 conditions per place. [2024-11-12 16:27:11,654 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 148 selfloop transitions, 147 changer transitions 79/388 dead transitions. [2024-11-12 16:27:11,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 388 transitions, 3974 flow [2024-11-12 16:27:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-12 16:27:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-12 16:27:11,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 710 transitions. [2024-11-12 16:27:11,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5366591080876795 [2024-11-12 16:27:11,657 INFO L175 Difference]: Start difference. First operand has 86 places, 97 transitions, 975 flow. Second operand 49 states and 710 transitions. [2024-11-12 16:27:11,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 388 transitions, 3974 flow [2024-11-12 16:27:11,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 388 transitions, 3795 flow, removed 75 selfloop flow, removed 9 redundant places. [2024-11-12 16:27:11,690 INFO L231 Difference]: Finished difference. Result has 143 places, 204 transitions, 2450 flow [2024-11-12 16:27:11,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=2450, PETRI_PLACES=143, PETRI_TRANSITIONS=204} [2024-11-12 16:27:11,692 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2024-11-12 16:27:11,692 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 204 transitions, 2450 flow [2024-11-12 16:27:11,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.869565217391305) internal successors, (250), 23 states have internal predecessors, (250), 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) [2024-11-12 16:27:11,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:11,692 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:11,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 16:27:11,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:27:11,897 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:27:11,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:11,902 INFO L85 PathProgramCache]: Analyzing trace with hash -900845311, now seen corresponding path program 3 times [2024-11-12 16:27:11,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:11,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107700064] [2024-11-12 16:27:11,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:11,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:12,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:12,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107700064] [2024-11-12 16:27:12,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107700064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:12,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:12,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:27:12,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382221362] [2024-11-12 16:27:12,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:12,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:27:12,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:12,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:27:12,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:27:12,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-12 16:27:12,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 204 transitions, 2450 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-12 16:27:12,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:12,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-12 16:27:12,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:12,486 INFO L124 PetriNetUnfolderBase]: 1931/3403 cut-off events. [2024-11-12 16:27:12,486 INFO L125 PetriNetUnfolderBase]: For 35010/35342 co-relation queries the response was YES. [2024-11-12 16:27:12,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19109 conditions, 3403 events. 1931/3403 cut-off events. For 35010/35342 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 20393 event pairs, 22 based on Foata normal form. 66/3448 useless extension candidates. Maximal degree in co-relation 18990. Up to 960 conditions per place. [2024-11-12 16:27:12,518 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 336 selfloop transitions, 115 changer transitions 0/460 dead transitions. [2024-11-12 16:27:12,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 460 transitions, 6598 flow [2024-11-12 16:27:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 16:27:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 16:27:12,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-11-12 16:27:12,520 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-11-12 16:27:12,520 INFO L175 Difference]: Start difference. First operand has 143 places, 204 transitions, 2450 flow. Second operand 9 states and 120 transitions. [2024-11-12 16:27:12,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 460 transitions, 6598 flow [2024-11-12 16:27:12,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 460 transitions, 5822 flow, removed 373 selfloop flow, removed 15 redundant places. [2024-11-12 16:27:12,609 INFO L231 Difference]: Finished difference. Result has 129 places, 273 transitions, 3333 flow [2024-11-12 16:27:12,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2090, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3333, PETRI_PLACES=129, PETRI_TRANSITIONS=273} [2024-11-12 16:27:12,610 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 100 predicate places. [2024-11-12 16:27:12,610 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 273 transitions, 3333 flow [2024-11-12 16:27:12,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-12 16:27:12,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:12,611 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:12,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 16:27:12,611 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:27:12,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:12,613 INFO L85 PathProgramCache]: Analyzing trace with hash -200571475, now seen corresponding path program 4 times [2024-11-12 16:27:12,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:12,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286060859] [2024-11-12 16:27:12,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:12,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:13,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:13,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286060859] [2024-11-12 16:27:13,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286060859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:27:13,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476547689] [2024-11-12 16:27:13,397 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:27:13,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:27:13,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:27:13,398 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) [2024-11-12 16:27:13,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 16:27:13,463 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:27:13,463 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:27:13,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-12 16:27:13,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:27:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:13,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:27:14,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:14,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476547689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:27:14,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:27:14,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2024-11-12 16:27:14,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346999519] [2024-11-12 16:27:14,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:27:14,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-12 16:27:14,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:14,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-12 16:27:14,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2024-11-12 16:27:14,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-12 16:27:14,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 273 transitions, 3333 flow. Second operand has 27 states, 27 states have (on average 8.222222222222221) internal successors, (222), 27 states have internal predecessors, (222), 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) [2024-11-12 16:27:14,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:14,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-12 16:27:14,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:19,850 INFO L124 PetriNetUnfolderBase]: 4967/8408 cut-off events. [2024-11-12 16:27:19,851 INFO L125 PetriNetUnfolderBase]: For 74051/74051 co-relation queries the response was YES. [2024-11-12 16:27:19,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47477 conditions, 8408 events. 4967/8408 cut-off events. For 74051/74051 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54281 event pairs, 124 based on Foata normal form. 14/8421 useless extension candidates. Maximal degree in co-relation 44480. Up to 1719 conditions per place. [2024-11-12 16:27:20,010 INFO L140 encePairwiseOnDemand]: 14/27 looper letters, 433 selfloop transitions, 523 changer transitions 59/1018 dead transitions. [2024-11-12 16:27:20,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1018 transitions, 13810 flow [2024-11-12 16:27:20,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-12 16:27:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2024-11-12 16:27:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 858 transitions. [2024-11-12 16:27:20,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4353120243531202 [2024-11-12 16:27:20,022 INFO L175 Difference]: Start difference. First operand has 129 places, 273 transitions, 3333 flow. Second operand 73 states and 858 transitions. [2024-11-12 16:27:20,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1018 transitions, 13810 flow [2024-11-12 16:27:20,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 1018 transitions, 13760 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-11-12 16:27:20,209 INFO L231 Difference]: Finished difference. Result has 238 places, 652 transitions, 10279 flow [2024-11-12 16:27:20,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3319, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=10279, PETRI_PLACES=238, PETRI_TRANSITIONS=652} [2024-11-12 16:27:20,210 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 209 predicate places. [2024-11-12 16:27:20,210 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 652 transitions, 10279 flow [2024-11-12 16:27:20,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.222222222222221) internal successors, (222), 27 states have internal predecessors, (222), 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) [2024-11-12 16:27:20,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:20,211 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:20,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 16:27:20,412 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,SelfDestructingSolverStorable8 [2024-11-12 16:27:20,413 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:27:20,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:20,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1124695352, now seen corresponding path program 4 times [2024-11-12 16:27:20,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:20,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755869590] [2024-11-12 16:27:20,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:20,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:21,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:21,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755869590] [2024-11-12 16:27:21,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755869590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:27:21,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556586928] [2024-11-12 16:27:21,397 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:27:21,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:27:21,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:27:21,398 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) [2024-11-12 16:27:21,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 16:27:21,474 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:27:21,474 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:27:21,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-12 16:27:21,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:27:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:38,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:27:38,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:38,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556586928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:27:38,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:27:38,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-12 16:27:38,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254089001] [2024-11-12 16:27:38,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:27:38,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-12 16:27:38,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:38,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-12 16:27:38,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=435, Unknown=4, NotChecked=0, Total=552 [2024-11-12 16:27:42,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:27:46,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:27:46,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-12 16:27:46,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 652 transitions, 10279 flow. Second operand has 24 states, 24 states have (on average 9.25) internal successors, (222), 24 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:46,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:46,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-12 16:27:46,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:48,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-12 16:27:51,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:27:54,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:28:07,417 WARN L286 SmtUtils]: Spent 11.13s on a formula simplification. DAG size of input: 44 DAG size of output: 26 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-12 16:28:10,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:28:15,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:28:19,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:28:22,886 INFO L124 PetriNetUnfolderBase]: 5512/9923 cut-off events. [2024-11-12 16:28:22,886 INFO L125 PetriNetUnfolderBase]: For 273983/274041 co-relation queries the response was YES. [2024-11-12 16:28:22,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79421 conditions, 9923 events. 5512/9923 cut-off events. For 273983/274041 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 73101 event pairs, 61 based on Foata normal form. 61/9974 useless extension candidates. Maximal degree in co-relation 79284. Up to 3657 conditions per place. [2024-11-12 16:28:22,997 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 668 selfloop transitions, 439 changer transitions 96/1212 dead transitions. [2024-11-12 16:28:22,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1212 transitions, 20858 flow [2024-11-12 16:28:22,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-12 16:28:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-12 16:28:23,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 602 transitions. [2024-11-12 16:28:23,000 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49547325102880657 [2024-11-12 16:28:23,001 INFO L175 Difference]: Start difference. First operand has 238 places, 652 transitions, 10279 flow. Second operand 45 states and 602 transitions. [2024-11-12 16:28:23,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 1212 transitions, 20858 flow [2024-11-12 16:28:24,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1212 transitions, 18455 flow, removed 1165 selfloop flow, removed 19 redundant places. [2024-11-12 16:28:24,155 INFO L231 Difference]: Finished difference. Result has 282 places, 873 transitions, 14163 flow [2024-11-12 16:28:24,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8962, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=14163, PETRI_PLACES=282, PETRI_TRANSITIONS=873} [2024-11-12 16:28:24,156 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 253 predicate places. [2024-11-12 16:28:24,156 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 873 transitions, 14163 flow [2024-11-12 16:28:24,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.25) internal successors, (222), 24 states have internal predecessors, (222), 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) [2024-11-12 16:28:24,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:24,156 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:24,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 16:28:24,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:24,357 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:24,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:24,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2076886564, now seen corresponding path program 5 times [2024-11-12 16:28:24,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:24,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017320335] [2024-11-12 16:28:24,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:24,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:25,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:25,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017320335] [2024-11-12 16:28:25,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017320335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:25,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571029533] [2024-11-12 16:28:25,244 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:28:25,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:25,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:25,246 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) [2024-11-12 16:28:25,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 16:28:25,307 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:28:25,307 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:25,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-12 16:28:25,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:26,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:27,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571029533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:27,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:27,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2024-11-12 16:28:27,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214515235] [2024-11-12 16:28:27,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:27,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 16:28:27,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:27,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 16:28:27,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2024-11-12 16:28:27,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-12 16:28:27,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 873 transitions, 14163 flow. Second operand has 26 states, 26 states have (on average 9.307692307692308) internal successors, (242), 26 states have internal predecessors, (242), 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) [2024-11-12 16:28:27,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:27,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-12 16:28:27,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:37,268 INFO L124 PetriNetUnfolderBase]: 6908/12430 cut-off events. [2024-11-12 16:28:37,268 INFO L125 PetriNetUnfolderBase]: For 318255/318303 co-relation queries the response was YES. [2024-11-12 16:28:37,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96138 conditions, 12430 events. 6908/12430 cut-off events. For 318255/318303 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 95006 event pairs, 76 based on Foata normal form. 57/12474 useless extension candidates. Maximal degree in co-relation 95946. Up to 3799 conditions per place.