./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-mult-4.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-mult-4.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 b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:53:02,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:53:02,191 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:53:02,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:53:02,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:53:02,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:53:02,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:53:02,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:53:02,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:53:02,235 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:53:02,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:53:02,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:53:02,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:53:02,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:53:02,240 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:53:02,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:53:02,241 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:53:02,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:53:02,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:53:02,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:53:02,242 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:53:02,242 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:53:02,246 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:53:02,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:53:02,247 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:53:02,247 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:53:02,247 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:53:02,247 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:53:02,248 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:53:02,248 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:53:02,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:53:02,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:53:02,249 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:53:02,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:53:02,250 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:53:02,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:53:02,251 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:53:02,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:53:02,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:53:02,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:53:02,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:53:02,260 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:53:02,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 [2024-11-19 09:53:02,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:53:02,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:53:02,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:53:02,565 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:53:02,565 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:53:02,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-19 09:53:04,045 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:53:04,227 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:53:04,227 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-19 09:53:04,234 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c286756/6b5f588c74ad478288f070355f65f702/FLAG3ef202e13 [2024-11-19 09:53:04,246 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c286756/6b5f588c74ad478288f070355f65f702 [2024-11-19 09:53:04,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:53:04,249 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:53:04,250 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:53:04,250 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:53:04,255 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:53:04,256 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38614cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04, skipping insertion in model container [2024-11-19 09:53:04,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,277 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:53:04,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:53:04,482 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:53:04,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:53:04,518 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:53:04,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04 WrapperNode [2024-11-19 09:53:04,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:53:04,520 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:53:04,520 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:53:04,520 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:53:04,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,533 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,554 INFO L138 Inliner]: procedures = 22, calls = 23, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 100 [2024-11-19 09:53:04,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:53:04,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:53:04,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:53:04,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:53:04,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,581 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 09:53:04,582 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,582 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,589 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:53:04,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:53:04,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:53:04,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:53:04,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04" (1/1) ... [2024-11-19 09:53:04,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:53:04,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:53:04,639 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 09:53:04,641 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 09:53:04,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:53:04,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:53:04,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:53:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:53:04,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:53:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 09:53:04,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 09:53:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 09:53:04,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 09:53:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:53:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:53:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:53:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:53:04,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:53:04,687 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 09:53:04,773 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:53:04,775 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:53:04,994 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:53:04,994 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:53:05,145 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:53:05,145 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 09:53:05,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:53:05 BoogieIcfgContainer [2024-11-19 09:53:05,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:53:05,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:53:05,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:53:05,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:53:05,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:53:04" (1/3) ... [2024-11-19 09:53:05,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792a8a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:53:05, skipping insertion in model container [2024-11-19 09:53:05,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:53:04" (2/3) ... [2024-11-19 09:53:05,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792a8a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:53:05, skipping insertion in model container [2024-11-19 09:53:05,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:53:05" (3/3) ... [2024-11-19 09:53:05,158 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-11-19 09:53:05,174 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:53:05,174 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:53:05,174 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:53:05,256 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 09:53:05,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2024-11-19 09:53:05,329 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-19 09:53:05,329 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 09:53:05,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-19 09:53:05,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2024-11-19 09:53:05,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2024-11-19 09:53:05,343 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:53:05,348 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;@30026ee9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:53:05,349 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 09:53:05,361 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:53:05,361 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-19 09:53:05,361 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 09:53:05,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:05,364 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:05,364 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:53:05,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:05,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1923112110, now seen corresponding path program 1 times [2024-11-19 09:53:05,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:05,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356946953] [2024-11-19 09:53:05,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:53:05,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:53:05,911 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 09:53:05,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:05,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356946953] [2024-11-19 09:53:05,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356946953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:05,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:05,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:53:05,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814167452] [2024-11-19 09:53:05,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:05,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:53:05,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:05,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:53:05,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:53:05,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-11-19 09:53:05,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 09:53:05,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:05,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-11-19 09:53:05,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:06,582 INFO L124 PetriNetUnfolderBase]: 3042/4219 cut-off events. [2024-11-19 09:53:06,583 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-11-19 09:53:06,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8619 conditions, 4219 events. 3042/4219 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18643 event pairs, 763 based on Foata normal form. 153/4362 useless extension candidates. Maximal degree in co-relation 7613. Up to 3203 conditions per place. [2024-11-19 09:53:06,622 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 46 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-19 09:53:06,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 259 flow [2024-11-19 09:53:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:53:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:53:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-19 09:53:06,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-11-19 09:53:06,636 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 85 transitions. [2024-11-19 09:53:06,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 259 flow [2024-11-19 09:53:06,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-19 09:53:06,651 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-19 09:53:06,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-19 09:53:06,660 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-11-19 09:53:06,661 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-19 09:53:06,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 09:53:06,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:06,661 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:06,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:53:06,662 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:53:06,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash -56319925, now seen corresponding path program 1 times [2024-11-19 09:53:06,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:06,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787318888] [2024-11-19 09:53:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:53:06,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:53:06,873 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 09:53:06,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:06,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787318888] [2024-11-19 09:53:06,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787318888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:06,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:06,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:53:06,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794280420] [2024-11-19 09:53:06,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:06,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:53:06,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:06,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:53:06,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:53:06,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-19 09:53:06,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 09:53:06,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:06,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-19 09:53:06,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:08,111 INFO L124 PetriNetUnfolderBase]: 11992/15976 cut-off events. [2024-11-19 09:53:08,111 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-11-19 09:53:08,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33896 conditions, 15976 events. 11992/15976 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 80196 event pairs, 4358 based on Foata normal form. 0/12611 useless extension candidates. Maximal degree in co-relation 9557. Up to 8661 conditions per place. [2024-11-19 09:53:08,341 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-11-19 09:53:08,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 418 flow [2024-11-19 09:53:08,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:53:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:53:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-11-19 09:53:08,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-11-19 09:53:08,347 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 134 transitions. [2024-11-19 09:53:08,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 418 flow [2024-11-19 09:53:08,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:53:08,352 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 165 flow [2024-11-19 09:53:08,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-11-19 09:53:08,353 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2024-11-19 09:53:08,354 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 165 flow [2024-11-19 09:53:08,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 09:53:08,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:08,354 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:08,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:53:08,355 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:53:08,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:08,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1593058387, now seen corresponding path program 2 times [2024-11-19 09:53:08,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:08,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487934833] [2024-11-19 09:53:08,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:53:08,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:08,396 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:53:08,400 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:08,613 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 09:53:08,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:08,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487934833] [2024-11-19 09:53:08,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487934833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:53:08,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193058175] [2024-11-19 09:53:08,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:53:08,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:53:08,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:53:08,618 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 09:53:08,619 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 09:53:08,708 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:53:08,708 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:08,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:53:08,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:53:08,794 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 09:53:08,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:53:08,881 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 09:53:08,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193058175] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:53:08,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:53:08,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 8 [2024-11-19 09:53:08,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506472747] [2024-11-19 09:53:08,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:08,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:53:08,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:53:08,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:53:08,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-19 09:53:08,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 09:53:08,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:08,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-19 09:53:08,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:10,195 INFO L124 PetriNetUnfolderBase]: 12658/17153 cut-off events. [2024-11-19 09:53:10,195 INFO L125 PetriNetUnfolderBase]: For 8311/8337 co-relation queries the response was YES. [2024-11-19 09:53:10,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45630 conditions, 17153 events. 12658/17153 cut-off events. For 8311/8337 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 90108 event pairs, 1573 based on Foata normal form. 498/17456 useless extension candidates. Maximal degree in co-relation 24178. Up to 7881 conditions per place. [2024-11-19 09:53:10,329 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 88 selfloop transitions, 7 changer transitions 2/102 dead transitions. [2024-11-19 09:53:10,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 102 transitions, 564 flow [2024-11-19 09:53:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:53:10,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:53:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-19 09:53:10,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-19 09:53:10,335 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 165 flow. Second operand 4 states and 108 transitions. [2024-11-19 09:53:10,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 102 transitions, 564 flow [2024-11-19 09:53:10,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 102 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:53:10,348 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 225 flow [2024-11-19 09:53:10,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2024-11-19 09:53:10,350 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2024-11-19 09:53:10,351 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 225 flow [2024-11-19 09:53:10,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 09:53:10,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:10,351 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:10,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 09:53:10,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:53:10,552 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:53:10,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1245906665, now seen corresponding path program 3 times [2024-11-19 09:53:10,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:10,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371206385] [2024-11-19 09:53:10,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:53:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:10,583 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:53:10,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:10,666 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 09:53:10,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:10,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371206385] [2024-11-19 09:53:10,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371206385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:10,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:10,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:53:10,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182417653] [2024-11-19 09:53:10,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:10,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:53:10,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:10,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:53:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:53:10,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-19 09:53:10,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 09:53:10,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:10,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-19 09:53:10,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:12,774 INFO L124 PetriNetUnfolderBase]: 19082/25450 cut-off events. [2024-11-19 09:53:12,777 INFO L125 PetriNetUnfolderBase]: For 29339/29419 co-relation queries the response was YES. [2024-11-19 09:53:12,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79026 conditions, 25450 events. 19082/25450 cut-off events. For 29339/29419 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 135330 event pairs, 6037 based on Foata normal form. 554/25483 useless extension candidates. Maximal degree in co-relation 31028. Up to 10557 conditions per place. [2024-11-19 09:53:12,981 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 90 selfloop transitions, 6 changer transitions 4/105 dead transitions. [2024-11-19 09:53:12,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 105 transitions, 640 flow [2024-11-19 09:53:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:53:12,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:53:12,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-19 09:53:12,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-19 09:53:12,984 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 225 flow. Second operand 4 states and 110 transitions. [2024-11-19 09:53:12,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 105 transitions, 640 flow [2024-11-19 09:53:13,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 105 transitions, 640 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:53:13,006 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 271 flow [2024-11-19 09:53:13,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-11-19 09:53:13,007 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2024-11-19 09:53:13,007 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 271 flow [2024-11-19 09:53:13,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 09:53:13,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:13,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:13,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:53:13,008 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:53:13,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:13,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1049103311, now seen corresponding path program 4 times [2024-11-19 09:53:13,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:13,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242239872] [2024-11-19 09:53:13,010 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:53:13,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:13,029 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:53:13,030 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:13,161 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 09:53:13,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:13,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242239872] [2024-11-19 09:53:13,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242239872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:53:13,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375190652] [2024-11-19 09:53:13,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:53:13,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:53:13,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:53:13,164 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 09:53:13,166 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 09:53:13,249 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:53:13,249 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:13,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:53:13,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:53:13,334 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 09:53:13,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:53:13,416 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 09:53:13,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375190652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:53:13,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:53:13,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 10 [2024-11-19 09:53:13,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597107356] [2024-11-19 09:53:13,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:53:13,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:53:13,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:13,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:53:13,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:53:13,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-19 09:53:13,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 271 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 09:53:13,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:13,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-19 09:53:13,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:17,891 INFO L124 PetriNetUnfolderBase]: 37801/51563 cut-off events. [2024-11-19 09:53:17,891 INFO L125 PetriNetUnfolderBase]: For 92478/92578 co-relation queries the response was YES. [2024-11-19 09:53:18,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176515 conditions, 51563 events. 37801/51563 cut-off events. For 92478/92578 co-relation queries the response was YES. Maximal size of possible extension queue 1779. Compared 312079 event pairs, 1707 based on Foata normal form. 3806/54199 useless extension candidates. Maximal degree in co-relation 67032. Up to 9423 conditions per place. [2024-11-19 09:53:18,353 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 349 selfloop transitions, 126 changer transitions 15/495 dead transitions. [2024-11-19 09:53:18,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 495 transitions, 3543 flow [2024-11-19 09:53:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 09:53:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-19 09:53:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 653 transitions. [2024-11-19 09:53:18,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5758377425044092 [2024-11-19 09:53:18,358 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 271 flow. Second operand 27 states and 653 transitions. [2024-11-19 09:53:18,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 495 transitions, 3543 flow [2024-11-19 09:53:18,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 495 transitions, 3256 flow, removed 110 selfloop flow, removed 2 redundant places. [2024-11-19 09:53:18,434 INFO L231 Difference]: Finished difference. Result has 104 places, 173 transitions, 1437 flow [2024-11-19 09:53:18,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1437, PETRI_PLACES=104, PETRI_TRANSITIONS=173} [2024-11-19 09:53:18,435 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 58 predicate places. [2024-11-19 09:53:18,436 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 173 transitions, 1437 flow [2024-11-19 09:53:18,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 09:53:18,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:18,436 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:18,453 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 09:53:18,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:53:18,637 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:53:18,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:18,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1388252591, now seen corresponding path program 5 times [2024-11-19 09:53:18,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:18,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258592163] [2024-11-19 09:53:18,638 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:53:18,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:18,654 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:53:18,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:18,745 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 09:53:18,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:18,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258592163] [2024-11-19 09:53:18,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258592163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:18,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:18,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:53:18,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795245327] [2024-11-19 09:53:18,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:18,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:53:18,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:18,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:53:18,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:53:18,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-19 09:53:18,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 173 transitions, 1437 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 09:53:18,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:18,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-19 09:53:18,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:24,455 INFO L124 PetriNetUnfolderBase]: 42502/57180 cut-off events. [2024-11-19 09:53:24,455 INFO L125 PetriNetUnfolderBase]: For 573376/574016 co-relation queries the response was YES. [2024-11-19 09:53:24,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290356 conditions, 57180 events. 42502/57180 cut-off events. For 573376/574016 co-relation queries the response was YES. Maximal size of possible extension queue 1908. Compared 340596 event pairs, 11450 based on Foata normal form. 1418/57000 useless extension candidates. Maximal degree in co-relation 249291. Up to 28994 conditions per place. [2024-11-19 09:53:25,472 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 356 selfloop transitions, 47 changer transitions 0/408 dead transitions. [2024-11-19 09:53:25,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 408 transitions, 4329 flow [2024-11-19 09:53:25,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:53:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:53:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-19 09:53:25,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-19 09:53:25,473 INFO L175 Difference]: Start difference. First operand has 104 places, 173 transitions, 1437 flow. Second operand 4 states and 108 transitions. [2024-11-19 09:53:25,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 408 transitions, 4329 flow [2024-11-19 09:53:32,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 408 transitions, 4087 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-11-19 09:53:32,116 INFO L231 Difference]: Finished difference. Result has 106 places, 210 transitions, 1924 flow [2024-11-19 09:53:32,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1924, PETRI_PLACES=106, PETRI_TRANSITIONS=210} [2024-11-19 09:53:32,117 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 60 predicate places. [2024-11-19 09:53:32,117 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 210 transitions, 1924 flow [2024-11-19 09:53:32,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 09:53:32,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:32,118 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:32,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:53:32,118 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:53:32,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:32,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1024722241, now seen corresponding path program 1 times [2024-11-19 09:53:32,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:32,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120731720] [2024-11-19 09:53:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:53:32,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:53:32,200 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 09:53:32,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:32,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120731720] [2024-11-19 09:53:32,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120731720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:32,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:32,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:53:32,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506062016] [2024-11-19 09:53:32,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:32,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:53:32,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:32,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:53:32,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:53:32,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-19 09:53:32,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 210 transitions, 1924 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 09:53:32,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:32,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-19 09:53:32,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:37,465 INFO L124 PetriNetUnfolderBase]: 40829/54874 cut-off events. [2024-11-19 09:53:37,465 INFO L125 PetriNetUnfolderBase]: For 571542/571974 co-relation queries the response was YES. [2024-11-19 09:53:37,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293414 conditions, 54874 events. 40829/54874 cut-off events. For 571542/571974 co-relation queries the response was YES. Maximal size of possible extension queue 1768. Compared 319163 event pairs, 15181 based on Foata normal form. 169/53629 useless extension candidates. Maximal degree in co-relation 257573. Up to 36314 conditions per place. [2024-11-19 09:53:38,072 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 192 selfloop transitions, 30 changer transitions 33/260 dead transitions. [2024-11-19 09:53:38,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 260 transitions, 2798 flow [2024-11-19 09:53:38,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:53:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:53:38,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-19 09:53:38,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-11-19 09:53:38,074 INFO L175 Difference]: Start difference. First operand has 106 places, 210 transitions, 1924 flow. Second operand 5 states and 129 transitions. [2024-11-19 09:53:38,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 260 transitions, 2798 flow [2024-11-19 09:53:47,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 260 transitions, 2698 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-11-19 09:53:47,290 INFO L231 Difference]: Finished difference. Result has 110 places, 204 transitions, 1875 flow [2024-11-19 09:53:47,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1875, PETRI_PLACES=110, PETRI_TRANSITIONS=204} [2024-11-19 09:53:47,291 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 64 predicate places. [2024-11-19 09:53:47,291 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 204 transitions, 1875 flow [2024-11-19 09:53:47,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 09:53:47,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:47,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:47,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:53:47,292 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:53:47,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:47,293 INFO L85 PathProgramCache]: Analyzing trace with hash -196947741, now seen corresponding path program 6 times [2024-11-19 09:53:47,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:47,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411548771] [2024-11-19 09:53:47,293 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:53:47,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:47,308 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:53:47,309 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:47,375 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 09:53:47,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:47,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411548771] [2024-11-19 09:53:47,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411548771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:47,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:47,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:53:47,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931316503] [2024-11-19 09:53:47,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:47,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:53:47,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:47,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:53:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:53:47,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-19 09:53:47,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 204 transitions, 1875 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 09:53:47,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:47,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-19 09:53:47,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:54,454 INFO L124 PetriNetUnfolderBase]: 53226/72034 cut-off events. [2024-11-19 09:53:54,454 INFO L125 PetriNetUnfolderBase]: For 773172/773468 co-relation queries the response was YES. [2024-11-19 09:53:54,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385329 conditions, 72034 events. 53226/72034 cut-off events. For 773172/773468 co-relation queries the response was YES. Maximal size of possible extension queue 2238. Compared 441807 event pairs, 16167 based on Foata normal form. 1044/70919 useless extension candidates. Maximal degree in co-relation 353753. Up to 32395 conditions per place. [2024-11-19 09:53:55,351 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 300 selfloop transitions, 23 changer transitions 11/339 dead transitions. [2024-11-19 09:53:55,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 339 transitions, 3741 flow [2024-11-19 09:53:55,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:53:55,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:53:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-19 09:53:55,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-19 09:53:55,353 INFO L175 Difference]: Start difference. First operand has 110 places, 204 transitions, 1875 flow. Second operand 4 states and 108 transitions. [2024-11-19 09:53:55,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 339 transitions, 3741 flow [2024-11-19 09:54:12,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 339 transitions, 3605 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-11-19 09:54:12,181 INFO L231 Difference]: Finished difference. Result has 109 places, 207 transitions, 1963 flow [2024-11-19 09:54:12,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1963, PETRI_PLACES=109, PETRI_TRANSITIONS=207} [2024-11-19 09:54:12,183 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2024-11-19 09:54:12,183 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 207 transitions, 1963 flow [2024-11-19 09:54:12,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 09:54:12,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:54:12,183 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:54:12,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:54:12,184 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:54:12,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:54:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1524373325, now seen corresponding path program 7 times [2024-11-19 09:54:12,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:54:12,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799609372] [2024-11-19 09:54:12,185 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:54:12,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:54:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:54:12,300 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 09:54:12,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:54:12,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799609372] [2024-11-19 09:54:12,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799609372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:54:12,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:54:12,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:54:12,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671775372] [2024-11-19 09:54:12,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:54:12,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:54:12,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:54:12,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:54:12,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:54:12,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-19 09:54:12,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 207 transitions, 1963 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 09:54:12,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:54:12,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-19 09:54:12,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:54:23,689 INFO L124 PetriNetUnfolderBase]: 81303/109583 cut-off events. [2024-11-19 09:54:23,689 INFO L125 PetriNetUnfolderBase]: For 1273776/1275482 co-relation queries the response was YES. [2024-11-19 09:54:24,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617895 conditions, 109583 events. 81303/109583 cut-off events. For 1273776/1275482 co-relation queries the response was YES. Maximal size of possible extension queue 3249. Compared 695638 event pairs, 26130 based on Foata normal form. 2222/107826 useless extension candidates. Maximal degree in co-relation 477419. Up to 56560 conditions per place. [2024-11-19 09:54:25,214 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 383 selfloop transitions, 26 changer transitions 27/441 dead transitions. [2024-11-19 09:54:25,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 441 transitions, 5135 flow [2024-11-19 09:54:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:54:25,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:54:25,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-19 09:54:25,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-11-19 09:54:25,215 INFO L175 Difference]: Start difference. First operand has 109 places, 207 transitions, 1963 flow. Second operand 5 states and 123 transitions. [2024-11-19 09:54:25,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 441 transitions, 5135 flow