./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 3061b6dc 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-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:49:08,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:49:08,935 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:49:08,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:49:08,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:49:08,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:49:08,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:49:08,974 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:49:08,975 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:49:08,976 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:49:08,977 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:49:08,977 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:49:08,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:49:08,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:49:08,979 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:49:08,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:49:08,979 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:49:08,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:49:08,979 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:49:08,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:49:08,980 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:49:08,985 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:49:08,986 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:49:08,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:49:08,986 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:49:08,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:49:08,986 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:49:08,987 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:49:08,987 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:49:08,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:49:08,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:49:08,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:49:08,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:49:08,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:49:08,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:49:08,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:49:08,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:49:08,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:49:08,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:49:08,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:49:08,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:49:08,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:49:08,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b30bad195dde021066febd52c7985271e0448c265b66e6efcbd9c3306420e73 [2024-11-19 09:49:09,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:49:09,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:49:09,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:49:09,193 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:49:09,194 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:49:09,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2024-11-19 09:49:10,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:49:10,522 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:49:10,523 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2024-11-19 09:49:10,528 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6afdb875/976b2f62ca004a0bb1ca52f55f0a674a/FLAG97925a10f [2024-11-19 09:49:10,542 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6afdb875/976b2f62ca004a0bb1ca52f55f0a674a [2024-11-19 09:49:10,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:49:10,545 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:49:10,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:49:10,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:49:10,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:49:10,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669d480e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10, skipping insertion in model container [2024-11-19 09:49:10,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,572 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:49:10,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:49:10,756 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:49:10,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:49:10,791 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:49:10,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10 WrapperNode [2024-11-19 09:49:10,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:49:10,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:49:10,793 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:49:10,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:49:10,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,823 INFO L138 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 50 [2024-11-19 09:49:10,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:49:10,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:49:10,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:49:10,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:49:10,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,833 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,841 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]. [2024-11-19 09:49:10,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,845 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,848 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:49:10,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:49:10,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:49:10,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:49:10,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10" (1/1) ... [2024-11-19 09:49:10,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:49:10,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:49:10,884 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) [2024-11-19 09:49:10,886 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 [2024-11-19 09:49:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:49:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:49:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:49:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:49:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:49:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:49:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:49:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:49:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:49:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:49:10,924 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:49:11,042 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:49:11,044 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:49:11,178 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:49:11,178 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:49:11,287 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:49:11,288 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:49:11,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:49:11 BoogieIcfgContainer [2024-11-19 09:49:11,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:49:11,291 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:49:11,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:49:11,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:49:11,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:49:10" (1/3) ... [2024-11-19 09:49:11,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f617b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:49:11, skipping insertion in model container [2024-11-19 09:49:11,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:10" (2/3) ... [2024-11-19 09:49:11,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f617b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:49:11, skipping insertion in model container [2024-11-19 09:49:11,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:49:11" (3/3) ... [2024-11-19 09:49:11,298 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2024-11-19 09:49:11,310 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:49:11,310 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:49:11,310 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:49:11,357 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 09:49:11,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 27 transitions, 68 flow [2024-11-19 09:49:11,408 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-19 09:49:11,411 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:49:11,413 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. [2024-11-19 09:49:11,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 27 transitions, 68 flow [2024-11-19 09:49:11,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 24 transitions, 60 flow [2024-11-19 09:49:11,421 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:49:11,427 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;@4b892a10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:49:11,427 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:49:11,433 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:49:11,434 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-11-19 09:49:11,434 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:49:11,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:11,434 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:49:11,435 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)] === [2024-11-19 09:49:11,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:11,439 INFO L85 PathProgramCache]: Analyzing trace with hash -234913753, now seen corresponding path program 1 times [2024-11-19 09:49:11,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:11,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445418132] [2024-11-19 09:49:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:49:11,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:49:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:49:11,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:49:11,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445418132] [2024-11-19 09:49:11,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445418132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:49:11,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:49:11,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:49:11,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808443331] [2024-11-19 09:49:11,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:49:11,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:49:11,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:49:11,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:49:11,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:49:11,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2024-11-19 09:49:11,858 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) [2024-11-19 09:49:11,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:49:11,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2024-11-19 09:49:11,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:49:11,971 INFO L124 PetriNetUnfolderBase]: 104/206 cut-off events. [2024-11-19 09:49:11,972 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-19 09:49:11,974 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. [2024-11-19 09:49:11,977 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 29 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2024-11-19 09:49:11,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 175 flow [2024-11-19 09:49:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:49:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:49:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-11-19 09:49:11,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-11-19 09:49:11,998 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 5 states and 88 transitions. [2024-11-19 09:49:11,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 175 flow [2024-11-19 09:49:12,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 161 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:49:12,004 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 93 flow [2024-11-19 09:49:12,005 INFO L260 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} [2024-11-19 09:49:12,009 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-11-19 09:49:12,010 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 93 flow [2024-11-19 09:49:12,010 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) [2024-11-19 09:49:12,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:12,010 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:49:12,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:49:12,010 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)] === [2024-11-19 09:49:12,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:12,011 INFO L85 PathProgramCache]: Analyzing trace with hash 188808021, now seen corresponding path program 1 times [2024-11-19 09:49:12,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:12,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817769288] [2024-11-19 09:49:12,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:49:12,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:49:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:49:12,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:49:12,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817769288] [2024-11-19 09:49:12,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817769288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:49:12,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:49:12,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:49:12,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062627043] [2024-11-19 09:49:12,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:49:12,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:49:12,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:49:12,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:49:12,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:49:12,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2024-11-19 09:49:12,205 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) [2024-11-19 09:49:12,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:49:12,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2024-11-19 09:49:12,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:49:12,277 INFO L124 PetriNetUnfolderBase]: 116/238 cut-off events. [2024-11-19 09:49:12,277 INFO L125 PetriNetUnfolderBase]: For 194/203 co-relation queries the response was YES. [2024-11-19 09:49:12,278 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. [2024-11-19 09:49:12,282 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 26 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-11-19 09:49:12,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 195 flow [2024-11-19 09:49:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:49:12,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:49:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-19 09:49:12,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-19 09:49:12,284 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 93 flow. Second operand 4 states and 66 transitions. [2024-11-19 09:49:12,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 195 flow [2024-11-19 09:49:12,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:49:12,287 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 104 flow [2024-11-19 09:49:12,288 INFO L260 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} [2024-11-19 09:49:12,289 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-11-19 09:49:12,289 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 104 flow [2024-11-19 09:49:12,289 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) [2024-11-19 09:49:12,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:12,290 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:49:12,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:49:12,290 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)] === [2024-11-19 09:49:12,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:12,291 INFO L85 PathProgramCache]: Analyzing trace with hash 44148424, now seen corresponding path program 1 times [2024-11-19 09:49:12,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:12,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540916263] [2024-11-19 09:49:12,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:49:12,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:49:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:49:12,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:49:12,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540916263] [2024-11-19 09:49:12,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540916263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:49:12,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:49:12,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:49:12,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386941433] [2024-11-19 09:49:12,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:49:12,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:49:12,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:49:12,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:49:12,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:49:12,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2024-11-19 09:49:12,445 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) [2024-11-19 09:49:12,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:49:12,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2024-11-19 09:49:12,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:49:12,551 INFO L124 PetriNetUnfolderBase]: 116/241 cut-off events. [2024-11-19 09:49:12,552 INFO L125 PetriNetUnfolderBase]: For 180/207 co-relation queries the response was YES. [2024-11-19 09:49:12,554 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. [2024-11-19 09:49:12,556 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 30 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-11-19 09:49:12,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 238 flow [2024-11-19 09:49:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:49:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:49:12,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-11-19 09:49:12,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-11-19 09:49:12,559 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 104 flow. Second operand 5 states and 84 transitions. [2024-11-19 09:49:12,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 238 flow [2024-11-19 09:49:12,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 233 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:49:12,561 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 150 flow [2024-11-19 09:49:12,562 INFO L260 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} [2024-11-19 09:49:12,564 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-11-19 09:49:12,564 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 150 flow [2024-11-19 09:49:12,564 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) [2024-11-19 09:49:12,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:12,565 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:49:12,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:49:12,565 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)] === [2024-11-19 09:49:12,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:12,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1872370852, now seen corresponding path program 2 times [2024-11-19 09:49:12,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:12,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958729040] [2024-11-19 09:49:12,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:49:12,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:12,609 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:49:12,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:49:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:49:13,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:49:13,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958729040] [2024-11-19 09:49:13,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958729040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:49:13,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593882950] [2024-11-19 09:49:13,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:49:13,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:49:13,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:49:13,010 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) [2024-11-19 09:49:13,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:49:13,092 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:49:13,092 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:49:13,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:49:13,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:49:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:49:13,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:49:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:49:13,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593882950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:49:13,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:49:13,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-19 09:49:13,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896564008] [2024-11-19 09:49:13,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:49:13,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:49:13,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:49:13,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:49:13,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-19 09:49:13,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-19 09:49:13,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 150 flow. Second operand has 17 states, 17 states have (on average 11.294117647058824) internal successors, (192), 17 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:13,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:49:13,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-19 09:49:13,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:49:14,833 INFO L124 PetriNetUnfolderBase]: 595/1161 cut-off events. [2024-11-19 09:49:14,833 INFO L125 PetriNetUnfolderBase]: For 1247/1302 co-relation queries the response was YES. [2024-11-19 09:49:14,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3365 conditions, 1161 events. 595/1161 cut-off events. For 1247/1302 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6453 event pairs, 6 based on Foata normal form. 22/1178 useless extension candidates. Maximal degree in co-relation 1385. Up to 289 conditions per place. [2024-11-19 09:49:14,839 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 105 selfloop transitions, 61 changer transitions 25/197 dead transitions. [2024-11-19 09:49:14,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 197 transitions, 1246 flow [2024-11-19 09:49:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 09:49:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-19 09:49:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 439 transitions. [2024-11-19 09:49:14,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5606641123882503 [2024-11-19 09:49:14,842 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 150 flow. Second operand 29 states and 439 transitions. [2024-11-19 09:49:14,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 197 transitions, 1246 flow [2024-11-19 09:49:14,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 197 transitions, 1234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:49:14,847 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 720 flow [2024-11-19 09:49:14,847 INFO L260 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=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=720, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2024-11-19 09:49:14,847 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-11-19 09:49:14,848 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 720 flow [2024-11-19 09:49:14,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.294117647058824) internal successors, (192), 17 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:14,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:14,848 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:49:14,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 09:49:15,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:49:15,053 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)] === [2024-11-19 09:49:15,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:15,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1256800517, now seen corresponding path program 3 times [2024-11-19 09:49:15,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:15,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857617377] [2024-11-19 09:49:15,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:49:15,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:15,065 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:49:15,065 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:49:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:49:15,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:49:15,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857617377] [2024-11-19 09:49:15,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857617377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:49:15,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:49:15,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:49:15,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177058270] [2024-11-19 09:49:15,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:49:15,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:49:15,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:49:15,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:49:15,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:49:15,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-19 09:49:15,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 720 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:15,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:49:15,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-19 09:49:15,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:49:15,416 INFO L124 PetriNetUnfolderBase]: 645/1236 cut-off events. [2024-11-19 09:49:15,417 INFO L125 PetriNetUnfolderBase]: For 5834/5918 co-relation queries the response was YES. [2024-11-19 09:49:15,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5113 conditions, 1236 events. 645/1236 cut-off events. For 5834/5918 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6623 event pairs, 172 based on Foata normal form. 6/1238 useless extension candidates. Maximal degree in co-relation 5062. Up to 628 conditions per place. [2024-11-19 09:49:15,427 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 86 selfloop transitions, 35 changer transitions 0/131 dead transitions. [2024-11-19 09:49:15,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 131 transitions, 1212 flow [2024-11-19 09:49:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:49:15,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:49:15,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-11-19 09:49:15,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.544973544973545 [2024-11-19 09:49:15,429 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 720 flow. Second operand 7 states and 103 transitions. [2024-11-19 09:49:15,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 131 transitions, 1212 flow [2024-11-19 09:49:15,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 131 transitions, 1066 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-11-19 09:49:15,454 INFO L231 Difference]: Finished difference. Result has 85 places, 102 transitions, 854 flow [2024-11-19 09:49:15,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=854, PETRI_PLACES=85, PETRI_TRANSITIONS=102} [2024-11-19 09:49:15,456 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-11-19 09:49:15,456 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 102 transitions, 854 flow [2024-11-19 09:49:15,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:15,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:15,457 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:49:15,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:49:15,458 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)] === [2024-11-19 09:49:15,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:15,459 INFO L85 PathProgramCache]: Analyzing trace with hash -690611927, now seen corresponding path program 4 times [2024-11-19 09:49:15,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:15,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157763238] [2024-11-19 09:49:15,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:49:15,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:15,467 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:49:15,468 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:49:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:49:15,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:49:15,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157763238] [2024-11-19 09:49:15,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157763238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:49:15,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:49:15,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:49:15,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953020884] [2024-11-19 09:49:15,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:49:15,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:49:15,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:49:15,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:49:15,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:49:15,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-19 09:49:15,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 102 transitions, 854 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:15,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:49:15,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-19 09:49:15,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:49:15,879 INFO L124 PetriNetUnfolderBase]: 860/1641 cut-off events. [2024-11-19 09:49:15,879 INFO L125 PetriNetUnfolderBase]: For 9874/9976 co-relation queries the response was YES. [2024-11-19 09:49:15,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7324 conditions, 1641 events. 860/1641 cut-off events. For 9874/9976 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9248 event pairs, 97 based on Foata normal form. 4/1635 useless extension candidates. Maximal degree in co-relation 5833. Up to 509 conditions per place. [2024-11-19 09:49:15,891 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 103 selfloop transitions, 71 changer transitions 0/184 dead transitions. [2024-11-19 09:49:15,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 184 transitions, 1945 flow [2024-11-19 09:49:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:49:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:49:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-11-19 09:49:15,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-11-19 09:49:15,893 INFO L175 Difference]: Start difference. First operand has 85 places, 102 transitions, 854 flow. Second operand 7 states and 114 transitions. [2024-11-19 09:49:15,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 184 transitions, 1945 flow [2024-11-19 09:49:15,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 184 transitions, 1889 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-11-19 09:49:15,913 INFO L231 Difference]: Finished difference. Result has 95 places, 138 transitions, 1513 flow [2024-11-19 09:49:15,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1513, PETRI_PLACES=95, PETRI_TRANSITIONS=138} [2024-11-19 09:49:15,914 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-11-19 09:49:15,914 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 138 transitions, 1513 flow [2024-11-19 09:49:15,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:15,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:15,914 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:49:15,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:49:15,914 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)] === [2024-11-19 09:49:15,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:15,915 INFO L85 PathProgramCache]: Analyzing trace with hash -208044633, now seen corresponding path program 5 times [2024-11-19 09:49:15,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:15,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286359292] [2024-11-19 09:49:15,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:49:15,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:15,923 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:49:15,924 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:49:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:49:15,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:49:15,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286359292] [2024-11-19 09:49:15,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286359292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:49:15,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:49:15,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:49:15,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674961812] [2024-11-19 09:49:15,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:49:15,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:49:15,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:49:15,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:49:15,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:49:16,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-19 09:49:16,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 138 transitions, 1513 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) [2024-11-19 09:49:16,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:49:16,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-19 09:49:16,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:49:16,294 INFO L124 PetriNetUnfolderBase]: 1384/2413 cut-off events. [2024-11-19 09:49:16,295 INFO L125 PetriNetUnfolderBase]: For 17027/17225 co-relation queries the response was YES. [2024-11-19 09:49:16,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11961 conditions, 2413 events. 1384/2413 cut-off events. For 17027/17225 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12907 event pairs, 9 based on Foata normal form. 36/2448 useless extension candidates. Maximal degree in co-relation 10483. Up to 622 conditions per place. [2024-11-19 09:49:16,311 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 158 selfloop transitions, 115 changer transitions 0/282 dead transitions. [2024-11-19 09:49:16,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 282 transitions, 3552 flow [2024-11-19 09:49:16,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:49:16,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:49:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-11-19 09:49:16,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-11-19 09:49:16,313 INFO L175 Difference]: Start difference. First operand has 95 places, 138 transitions, 1513 flow. Second operand 9 states and 120 transitions. [2024-11-19 09:49:16,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 282 transitions, 3552 flow [2024-11-19 09:49:16,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 282 transitions, 3387 flow, removed 26 selfloop flow, removed 1 redundant places. [2024-11-19 09:49:16,344 INFO L231 Difference]: Finished difference. Result has 107 places, 199 transitions, 2700 flow [2024-11-19 09:49:16,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2700, PETRI_PLACES=107, PETRI_TRANSITIONS=199} [2024-11-19 09:49:16,344 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-11-19 09:49:16,345 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 199 transitions, 2700 flow [2024-11-19 09:49:16,345 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) [2024-11-19 09:49:16,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:16,345 INFO L204 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] [2024-11-19 09:49:16,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:49:16,345 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)] === [2024-11-19 09:49:16,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:16,346 INFO L85 PathProgramCache]: Analyzing trace with hash 792461706, now seen corresponding path program 1 times [2024-11-19 09:49:16,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:16,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622921587] [2024-11-19 09:49:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:49:16,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:49:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:49:16,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:49:16,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622921587] [2024-11-19 09:49:16,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622921587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:49:16,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55352593] [2024-11-19 09:49:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:49:16,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:49:16,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:49:16,785 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) [2024-11-19 09:49:16,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:49:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:49:16,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 09:49:16,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:49:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:49:21,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:49:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:49:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55352593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:49:21,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:49:21,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2024-11-19 09:49:21,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279320758] [2024-11-19 09:49:21,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:49:21,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 09:49:21,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:49:21,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 09:49:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=433, Unknown=1, NotChecked=0, Total=552 [2024-11-19 09:49:26,853 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 [] [2024-11-19 09:49:30,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 09:49:30,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-19 09:49:30,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 199 transitions, 2700 flow. Second operand has 24 states, 24 states have (on average 9.416666666666666) internal successors, (226), 24 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:30,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:49:30,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-19 09:49:30,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:49:40,440 WARN L286 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 37 DAG size of output: 33 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-19 09:49:44,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 09:49:56,413 WARN L286 SmtUtils]: Spent 8.97s on a formula simplification. DAG size of input: 47 DAG size of output: 45 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-19 09:49:59,295 INFO L124 PetriNetUnfolderBase]: 2964/5314 cut-off events. [2024-11-19 09:49:59,296 INFO L125 PetriNetUnfolderBase]: For 45015/45051 co-relation queries the response was YES. [2024-11-19 09:49:59,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28695 conditions, 5314 events. 2964/5314 cut-off events. For 45015/45051 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 34393 event pairs, 49 based on Foata normal form. 45/5357 useless extension candidates. Maximal degree in co-relation 25394. Up to 1682 conditions per place. [2024-11-19 09:49:59,332 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 410 selfloop transitions, 236 changer transitions 76/728 dead transitions. [2024-11-19 09:49:59,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 728 transitions, 9864 flow [2024-11-19 09:49:59,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-19 09:49:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-19 09:49:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 733 transitions. [2024-11-19 09:49:59,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4762833008447043 [2024-11-19 09:49:59,337 INFO L175 Difference]: Start difference. First operand has 107 places, 199 transitions, 2700 flow. Second operand 57 states and 733 transitions. [2024-11-19 09:49:59,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 728 transitions, 9864 flow [2024-11-19 09:49:59,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 728 transitions, 9722 flow, removed 71 selfloop flow, removed 0 redundant places. [2024-11-19 09:49:59,428 INFO L231 Difference]: Finished difference. Result has 190 places, 416 transitions, 6614 flow [2024-11-19 09:49:59,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2688, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=6614, PETRI_PLACES=190, PETRI_TRANSITIONS=416} [2024-11-19 09:49:59,431 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-11-19 09:49:59,431 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 416 transitions, 6614 flow [2024-11-19 09:49:59,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.416666666666666) internal successors, (226), 24 states have internal predecessors, (226), 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) [2024-11-19 09:49:59,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:59,432 INFO L204 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] [2024-11-19 09:49:59,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:49:59,636 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,SelfDestructingSolverStorable7 [2024-11-19 09:49:59,637 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)] === [2024-11-19 09:49:59,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:59,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1410099980, now seen corresponding path program 2 times [2024-11-19 09:49:59,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:59,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601143301] [2024-11-19 09:49:59,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:49:59,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:59,665 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:49:59,665 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:00,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:00,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601143301] [2024-11-19 09:50:00,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601143301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:00,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387008002] [2024-11-19 09:50:00,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:50:00,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:00,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:00,380 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) [2024-11-19 09:50:00,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:50:00,434 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:00,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:00,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 09:50:00,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:20,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:21,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387008002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:21,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:21,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 09:50:21,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690692650] [2024-11-19 09:50:21,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:21,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:50:21,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:21,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:50:21,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=474, Unknown=5, NotChecked=0, Total=600 [2024-11-19 09:50:25,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 09:50:30,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 09:50:30,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-19 09:50:30,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 416 transitions, 6614 flow. Second operand has 25 states, 25 states have (on average 9.28) internal successors, (232), 25 states have internal predecessors, (232), 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) [2024-11-19 09:50:30,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:30,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-19 09:50:30,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:35,151 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 [] [2024-11-19 09:50:43,237 WARN L286 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 47 DAG size of output: 33 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)