./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:37:43,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:37:43,894 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:37:43,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:37:43,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:37:43,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:37:43,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:37:43,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:37:43,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:37:43,936 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:37:43,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:37:43,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:37:43,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:37:43,937 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:37:43,937 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:37:43,938 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:37:43,938 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:37:43,938 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:37:43,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:37:43,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:37:43,943 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:37:43,943 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:37:43,944 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:37:43,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:37:43,944 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:37:43,944 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:37:43,945 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:37:43,945 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:37:43,945 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:37:43,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:37:43,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:37:43,946 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:37:43,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:37:43,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:37:43,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:37:43,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:37:43,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:37:43,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:37:43,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:37:43,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:37:43,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:37:43,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:37:43,949 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2024-11-22 21:37:44,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:37:44,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:37:44,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:37:44,242 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:37:44,243 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:37:44,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-22 21:37:45,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:37:45,924 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:37:45,925 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-22 21:37:45,944 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7544ee80c/85d1b183c6eb47bf85ea87bb1fe10ee2/FLAGec83cee11 [2024-11-22 21:37:45,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7544ee80c/85d1b183c6eb47bf85ea87bb1fe10ee2 [2024-11-22 21:37:45,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:37:45,965 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:37:45,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:37:45,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:37:45,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:37:45,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:37:45" (1/1) ... [2024-11-22 21:37:45,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b27451e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:45, skipping insertion in model container [2024-11-22 21:37:45,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:37:45" (1/1) ... [2024-11-22 21:37:46,021 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:37:46,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:37:46,395 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:37:46,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:37:46,506 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:37:46,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46 WrapperNode [2024-11-22 21:37:46,506 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:37:46,508 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:37:46,508 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:37:46,509 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:37:46,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46" (1/1) ... [2024-11-22 21:37:46,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46" (1/1) ... [2024-11-22 21:37:46,571 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 123 [2024-11-22 21:37:46,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:37:46,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:37:46,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:37:46,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:37:46,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46" (1/1) ... [2024-11-22 21:37:46,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46" (1/1) ... [2024-11-22 21:37:46,589 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46" (1/1) ... [2024-11-22 21:37:46,616 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2024-11-22 21:37:46,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46" (1/1) ... [2024-11-22 21:37:46,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46" (1/1) ... [2024-11-22 21:37:46,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46" (1/1) ... [2024-11-22 21:37:46,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46" (1/1) ... [2024-11-22 21:37:46,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46" (1/1) ... [2024-11-22 21:37:46,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46" (1/1) ... [2024-11-22 21:37:46,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:37:46,646 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:37:46,646 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:37:46,646 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:37:46,647 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46" (1/1) ... [2024-11-22 21:37:46,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:37:46,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:37:46,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:37:46,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:37:46,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:37:46,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:37:46,744 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-11-22 21:37:46,744 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-11-22 21:37:46,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:37:46,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:37:46,744 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 21:37:46,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:37:46,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:37:46,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:37:46,745 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 21:37:46,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:37:46,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:37:46,748 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:37:46,883 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:37:46,885 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:37:47,149 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:37:47,150 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:37:47,309 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:37:47,309 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 21:37:47,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:37:47 BoogieIcfgContainer [2024-11-22 21:37:47,310 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:37:47,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:37:47,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:37:47,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:37:47,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:37:45" (1/3) ... [2024-11-22 21:37:47,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0df0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:37:47, skipping insertion in model container [2024-11-22 21:37:47,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:37:46" (2/3) ... [2024-11-22 21:37:47,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0df0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:37:47, skipping insertion in model container [2024-11-22 21:37:47,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:37:47" (3/3) ... [2024-11-22 21:37:47,321 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-22 21:37:47,337 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:37:47,339 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2024-11-22 21:37:47,339 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:37:47,407 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:37:47,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 75 transitions, 154 flow [2024-11-22 21:37:47,514 INFO L124 PetriNetUnfolderBase]: 10/74 cut-off events. [2024-11-22 21:37:47,516 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:37:47,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 10/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 218 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-22 21:37:47,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 75 transitions, 154 flow [2024-11-22 21:37:47,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 74 transitions, 151 flow [2024-11-22 21:37:47,544 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:37:47,550 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;@1f6fa22e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:37:47,553 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-22 21:37:47,556 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:37:47,573 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-22 21:37:47,576 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:37:47,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:47,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-22 21:37:47,577 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:47,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:47,587 INFO L85 PathProgramCache]: Analyzing trace with hash 13222, now seen corresponding path program 1 times [2024-11-22 21:37:47,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:47,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928777851] [2024-11-22 21:37:47,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:37:47,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:37:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:47,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:47,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928777851] [2024-11-22 21:37:47,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928777851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:47,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:47,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:37:47,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009273142] [2024-11-22 21:37:47,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:47,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:37:47,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:47,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:37:47,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:37:48,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 75 [2024-11-22 21:37:48,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:48,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:48,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 75 [2024-11-22 21:37:48,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:48,225 INFO L124 PetriNetUnfolderBase]: 212/615 cut-off events. [2024-11-22 21:37:48,226 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:37:48,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 615 events. 212/615 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3842 event pairs, 147 based on Foata normal form. 54/503 useless extension candidates. Maximal degree in co-relation 976. Up to 368 conditions per place. [2024-11-22 21:37:48,234 INFO L140 encePairwiseOnDemand]: 66/75 looper letters, 28 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-11-22 21:37:48,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 65 transitions, 193 flow [2024-11-22 21:37:48,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:37:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:37:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-22 21:37:48,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-22 21:37:48,250 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 151 flow. Second operand 3 states and 145 transitions. [2024-11-22 21:37:48,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 65 transitions, 193 flow [2024-11-22 21:37:48,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:37:48,257 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 136 flow [2024-11-22 21:37:48,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-11-22 21:37:48,265 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -3 predicate places. [2024-11-22 21:37:48,267 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 136 flow [2024-11-22 21:37:48,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:48,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:48,268 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-22 21:37:48,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:37:48,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:48,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:48,270 INFO L85 PathProgramCache]: Analyzing trace with hash 13223, now seen corresponding path program 1 times [2024-11-22 21:37:48,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:48,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137252872] [2024-11-22 21:37:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:37:48,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:37:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:48,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:48,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137252872] [2024-11-22 21:37:48,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137252872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:48,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:48,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:37:48,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352466090] [2024-11-22 21:37:48,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:48,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:37:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:48,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:37:48,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:37:48,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 75 [2024-11-22 21:37:48,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:48,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:48,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 75 [2024-11-22 21:37:48,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:48,621 INFO L124 PetriNetUnfolderBase]: 212/614 cut-off events. [2024-11-22 21:37:48,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:37:48,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 614 events. 212/614 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3836 event pairs, 147 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 980. Up to 368 conditions per place. [2024-11-22 21:37:48,631 INFO L140 encePairwiseOnDemand]: 72/75 looper letters, 28 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-11-22 21:37:48,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 194 flow [2024-11-22 21:37:48,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:37:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:37:48,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-11-22 21:37:48,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6177777777777778 [2024-11-22 21:37:48,637 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 136 flow. Second operand 3 states and 139 transitions. [2024-11-22 21:37:48,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 194 flow [2024-11-22 21:37:48,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:37:48,639 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 134 flow [2024-11-22 21:37:48,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-11-22 21:37:48,641 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-11-22 21:37:48,641 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 134 flow [2024-11-22 21:37:48,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:48,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:48,642 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 21:37:48,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:37:48,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:48,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:48,644 INFO L85 PathProgramCache]: Analyzing trace with hash -658033413, now seen corresponding path program 1 times [2024-11-22 21:37:48,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:48,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461996662] [2024-11-22 21:37:48,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:37:48,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:37:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:48,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461996662] [2024-11-22 21:37:48,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461996662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:48,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:48,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:37:48,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476097552] [2024-11-22 21:37:48,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:48,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:37:48,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:37:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:37:48,721 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 75 [2024-11-22 21:37:48,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:48,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:48,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 75 [2024-11-22 21:37:48,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:48,812 INFO L124 PetriNetUnfolderBase]: 212/612 cut-off events. [2024-11-22 21:37:48,812 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:37:48,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 612 events. 212/612 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3811 event pairs, 147 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 978. Up to 368 conditions per place. [2024-11-22 21:37:48,817 INFO L140 encePairwiseOnDemand]: 73/75 looper letters, 29 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2024-11-22 21:37:48,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 192 flow [2024-11-22 21:37:48,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:37:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:37:48,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-11-22 21:37:48,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6177777777777778 [2024-11-22 21:37:48,822 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 134 flow. Second operand 3 states and 139 transitions. [2024-11-22 21:37:48,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 192 flow [2024-11-22 21:37:48,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:37:48,824 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 130 flow [2024-11-22 21:37:48,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-11-22 21:37:48,826 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-11-22 21:37:48,827 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 130 flow [2024-11-22 21:37:48,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:48,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:48,827 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:37:48,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:37:48,828 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:48,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:48,829 INFO L85 PathProgramCache]: Analyzing trace with hash -943636261, now seen corresponding path program 1 times [2024-11-22 21:37:48,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:48,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605910980] [2024-11-22 21:37:48,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:37:48,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:37:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:49,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:49,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605910980] [2024-11-22 21:37:49,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605910980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:49,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:49,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:37:49,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799957775] [2024-11-22 21:37:49,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:49,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:37:49,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:49,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:37:49,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:37:49,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 75 [2024-11-22 21:37:49,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:49,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:49,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 75 [2024-11-22 21:37:49,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:49,348 INFO L124 PetriNetUnfolderBase]: 212/560 cut-off events. [2024-11-22 21:37:49,348 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:37:49,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 560 events. 212/560 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3172 event pairs, 8 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 951. Up to 359 conditions per place. [2024-11-22 21:37:49,352 INFO L140 encePairwiseOnDemand]: 65/75 looper letters, 38 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-11-22 21:37:49,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 222 flow [2024-11-22 21:37:49,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:37:49,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:37:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-11-22 21:37:49,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5146666666666667 [2024-11-22 21:37:49,355 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 130 flow. Second operand 5 states and 193 transitions. [2024-11-22 21:37:49,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 222 flow [2024-11-22 21:37:49,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 67 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:37:49,357 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 125 flow [2024-11-22 21:37:49,357 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-11-22 21:37:49,358 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2024-11-22 21:37:49,358 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 125 flow [2024-11-22 21:37:49,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:49,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:49,358 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:37:49,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:37:49,359 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:49,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:49,359 INFO L85 PathProgramCache]: Analyzing trace with hash -943636262, now seen corresponding path program 1 times [2024-11-22 21:37:49,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:49,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650985926] [2024-11-22 21:37:49,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:37:49,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:37:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:49,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:49,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650985926] [2024-11-22 21:37:49,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650985926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:49,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:49,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:37:49,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449367891] [2024-11-22 21:37:49,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:49,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:37:49,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:49,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:37:49,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:37:49,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 75 [2024-11-22 21:37:49,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:49,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:49,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 75 [2024-11-22 21:37:49,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:49,668 INFO L124 PetriNetUnfolderBase]: 223/519 cut-off events. [2024-11-22 21:37:49,668 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-22 21:37:49,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 519 events. 223/519 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2622 event pairs, 68 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 943. Up to 362 conditions per place. [2024-11-22 21:37:49,671 INFO L140 encePairwiseOnDemand]: 65/75 looper letters, 38 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2024-11-22 21:37:49,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 217 flow [2024-11-22 21:37:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:37:49,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:37:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-11-22 21:37:49,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5146666666666667 [2024-11-22 21:37:49,673 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 125 flow. Second operand 5 states and 193 transitions. [2024-11-22 21:37:49,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 217 flow [2024-11-22 21:37:49,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 209 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:37:49,676 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 113 flow [2024-11-22 21:37:49,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-22 21:37:49,678 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2024-11-22 21:37:49,679 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 113 flow [2024-11-22 21:37:49,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:49,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:49,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:37:49,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:37:49,680 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:49,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:49,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1009954102, now seen corresponding path program 1 times [2024-11-22 21:37:49,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:49,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120033430] [2024-11-22 21:37:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:37:49,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:37:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:49,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:49,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120033430] [2024-11-22 21:37:49,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120033430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:49,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:49,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:37:49,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861363714] [2024-11-22 21:37:49,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:49,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:37:49,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:49,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:37:49,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:37:49,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 75 [2024-11-22 21:37:49,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:49,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:49,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 75 [2024-11-22 21:37:49,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:49,983 INFO L124 PetriNetUnfolderBase]: 235/546 cut-off events. [2024-11-22 21:37:49,983 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-22 21:37:49,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 546 events. 235/546 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2907 event pairs, 53 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 1006. Up to 283 conditions per place. [2024-11-22 21:37:49,986 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 45 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2024-11-22 21:37:49,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 65 transitions, 243 flow [2024-11-22 21:37:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:37:49,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:37:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 212 transitions. [2024-11-22 21:37:49,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5653333333333334 [2024-11-22 21:37:49,989 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 113 flow. Second operand 5 states and 212 transitions. [2024-11-22 21:37:49,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 65 transitions, 243 flow [2024-11-22 21:37:49,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 231 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:37:49,992 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 107 flow [2024-11-22 21:37:49,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-22 21:37:49,993 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -17 predicate places. [2024-11-22 21:37:49,994 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 107 flow [2024-11-22 21:37:49,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:49,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:49,994 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:37:49,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:37:49,995 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:49,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1009954101, now seen corresponding path program 1 times [2024-11-22 21:37:49,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:49,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955294923] [2024-11-22 21:37:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:37:49,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:37:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:50,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:50,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955294923] [2024-11-22 21:37:50,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955294923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:50,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:50,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:37:50,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692911277] [2024-11-22 21:37:50,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:50,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:37:50,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:50,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:37:50,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:37:50,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 75 [2024-11-22 21:37:50,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:50,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:50,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 75 [2024-11-22 21:37:50,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:50,356 INFO L124 PetriNetUnfolderBase]: 235/495 cut-off events. [2024-11-22 21:37:50,357 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-22 21:37:50,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 495 events. 235/495 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2428 event pairs, 53 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 958. Up to 283 conditions per place. [2024-11-22 21:37:50,360 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 45 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-22 21:37:50,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 233 flow [2024-11-22 21:37:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:37:50,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:37:50,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 212 transitions. [2024-11-22 21:37:50,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5653333333333334 [2024-11-22 21:37:50,362 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 107 flow. Second operand 5 states and 212 transitions. [2024-11-22 21:37:50,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 233 flow [2024-11-22 21:37:50,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 225 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:37:50,363 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 101 flow [2024-11-22 21:37:50,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-22 21:37:50,364 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -20 predicate places. [2024-11-22 21:37:50,365 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 101 flow [2024-11-22 21:37:50,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:50,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:50,365 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:37:50,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:37:50,366 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:50,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:50,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1451164867, now seen corresponding path program 1 times [2024-11-22 21:37:50,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:50,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928467584] [2024-11-22 21:37:50,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:37:50,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:37:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:50,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:50,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928467584] [2024-11-22 21:37:50,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928467584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:50,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:50,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:37:50,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727640160] [2024-11-22 21:37:50,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:50,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:37:50,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:50,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:37:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:37:50,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 75 [2024-11-22 21:37:50,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 101 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:50,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:50,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 75 [2024-11-22 21:37:50,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:50,820 INFO L124 PetriNetUnfolderBase]: 296/648 cut-off events. [2024-11-22 21:37:50,821 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-22 21:37:50,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 648 events. 296/648 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2931 event pairs, 104 based on Foata normal form. 0/601 useless extension candidates. Maximal degree in co-relation 1242. Up to 386 conditions per place. [2024-11-22 21:37:50,825 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 73 selfloop transitions, 9 changer transitions 0/95 dead transitions. [2024-11-22 21:37:50,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 95 transitions, 381 flow [2024-11-22 21:37:50,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:37:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:37:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 329 transitions. [2024-11-22 21:37:50,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-11-22 21:37:50,827 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 101 flow. Second operand 7 states and 329 transitions. [2024-11-22 21:37:50,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 95 transitions, 381 flow [2024-11-22 21:37:50,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 95 transitions, 357 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:37:50,832 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 153 flow [2024-11-22 21:37:50,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=153, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2024-11-22 21:37:50,833 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2024-11-22 21:37:50,833 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 153 flow [2024-11-22 21:37:50,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:50,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:50,834 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:37:50,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:37:50,834 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:50,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:50,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1450149955, now seen corresponding path program 1 times [2024-11-22 21:37:50,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:50,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753533657] [2024-11-22 21:37:50,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:37:50,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:37:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:51,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:51,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753533657] [2024-11-22 21:37:51,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753533657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:51,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:51,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:37:51,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458797] [2024-11-22 21:37:51,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:51,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:37:51,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:51,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:37:51,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:37:51,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-22 21:37:51,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:51,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:51,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-22 21:37:51,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:51,334 INFO L124 PetriNetUnfolderBase]: 298/649 cut-off events. [2024-11-22 21:37:51,334 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-11-22 21:37:51,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 649 events. 298/649 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2987 event pairs, 104 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 1359. Up to 367 conditions per place. [2024-11-22 21:37:51,338 INFO L140 encePairwiseOnDemand]: 65/75 looper letters, 66 selfloop transitions, 13 changer transitions 6/98 dead transitions. [2024-11-22 21:37:51,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 418 flow [2024-11-22 21:37:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:37:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:37:51,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 322 transitions. [2024-11-22 21:37:51,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2024-11-22 21:37:51,340 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 153 flow. Second operand 7 states and 322 transitions. [2024-11-22 21:37:51,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 418 flow [2024-11-22 21:37:51,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:37:51,343 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 217 flow [2024-11-22 21:37:51,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-11-22 21:37:51,343 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-11-22 21:37:51,344 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 217 flow [2024-11-22 21:37:51,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:51,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:51,344 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] [2024-11-22 21:37:51,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:37:51,344 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:51,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:51,345 INFO L85 PathProgramCache]: Analyzing trace with hash 266376415, now seen corresponding path program 1 times [2024-11-22 21:37:51,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:51,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398340221] [2024-11-22 21:37:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:37:51,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:37:51,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:51,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:51,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398340221] [2024-11-22 21:37:51,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398340221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:51,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:51,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 21:37:51,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702494047] [2024-11-22 21:37:51,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:51,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:37:51,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:51,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:37:51,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:37:52,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-22 21:37:52,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 217 flow. Second operand has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:52,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:52,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-22 21:37:52,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:52,888 INFO L124 PetriNetUnfolderBase]: 326/694 cut-off events. [2024-11-22 21:37:52,889 INFO L125 PetriNetUnfolderBase]: For 352/359 co-relation queries the response was YES. [2024-11-22 21:37:52,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 694 events. 326/694 cut-off events. For 352/359 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3266 event pairs, 86 based on Foata normal form. 9/636 useless extension candidates. Maximal degree in co-relation 1675. Up to 381 conditions per place. [2024-11-22 21:37:52,893 INFO L140 encePairwiseOnDemand]: 58/75 looper letters, 73 selfloop transitions, 48 changer transitions 6/140 dead transitions. [2024-11-22 21:37:52,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 140 transitions, 746 flow [2024-11-22 21:37:52,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 21:37:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-22 21:37:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 805 transitions. [2024-11-22 21:37:52,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5366666666666666 [2024-11-22 21:37:52,896 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 217 flow. Second operand 20 states and 805 transitions. [2024-11-22 21:37:52,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 140 transitions, 746 flow [2024-11-22 21:37:52,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 140 transitions, 738 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:37:52,903 INFO L231 Difference]: Finished difference. Result has 83 places, 97 transitions, 501 flow [2024-11-22 21:37:52,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=501, PETRI_PLACES=83, PETRI_TRANSITIONS=97} [2024-11-22 21:37:52,905 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2024-11-22 21:37:52,905 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 97 transitions, 501 flow [2024-11-22 21:37:52,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:52,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:52,906 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] [2024-11-22 21:37:52,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 21:37:52,906 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:52,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:52,907 INFO L85 PathProgramCache]: Analyzing trace with hash 512789855, now seen corresponding path program 2 times [2024-11-22 21:37:52,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:52,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48285167] [2024-11-22 21:37:52,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:37:52,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:52,927 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:37:52,928 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:37:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:53,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:53,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48285167] [2024-11-22 21:37:53,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48285167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:53,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:53,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 21:37:53,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703759292] [2024-11-22 21:37:53,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:53,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:37:53,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:37:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:37:53,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 75 [2024-11-22 21:37:53,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 501 flow. Second operand has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:53,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:53,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 75 [2024-11-22 21:37:53,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:54,407 INFO L124 PetriNetUnfolderBase]: 469/965 cut-off events. [2024-11-22 21:37:54,407 INFO L125 PetriNetUnfolderBase]: For 925/925 co-relation queries the response was YES. [2024-11-22 21:37:54,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 965 events. 469/965 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4663 event pairs, 145 based on Foata normal form. 6/922 useless extension candidates. Maximal degree in co-relation 2872. Up to 502 conditions per place. [2024-11-22 21:37:54,413 INFO L140 encePairwiseOnDemand]: 61/75 looper letters, 91 selfloop transitions, 39 changer transitions 30/169 dead transitions. [2024-11-22 21:37:54,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 169 transitions, 1129 flow [2024-11-22 21:37:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 21:37:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 21:37:54,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 535 transitions. [2024-11-22 21:37:54,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5487179487179488 [2024-11-22 21:37:54,416 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 501 flow. Second operand 13 states and 535 transitions. [2024-11-22 21:37:54,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 169 transitions, 1129 flow [2024-11-22 21:37:54,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 169 transitions, 1043 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-22 21:37:54,425 INFO L231 Difference]: Finished difference. Result has 96 places, 109 transitions, 656 flow [2024-11-22 21:37:54,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=656, PETRI_PLACES=96, PETRI_TRANSITIONS=109} [2024-11-22 21:37:54,426 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 28 predicate places. [2024-11-22 21:37:54,426 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 109 transitions, 656 flow [2024-11-22 21:37:54,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:54,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:54,427 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] [2024-11-22 21:37:54,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 21:37:54,427 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:54,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:54,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1921422159, now seen corresponding path program 3 times [2024-11-22 21:37:54,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:54,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271599914] [2024-11-22 21:37:54,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:37:54,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:54,441 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 21:37:54,441 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:37:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:54,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:54,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271599914] [2024-11-22 21:37:54,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271599914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:54,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:54,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 21:37:54,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629724135] [2024-11-22 21:37:54,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:54,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:37:54,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:54,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:37:54,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:37:55,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 75 [2024-11-22 21:37:55,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 109 transitions, 656 flow. Second operand has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:55,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:55,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 75 [2024-11-22 21:37:55,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:55,824 INFO L124 PetriNetUnfolderBase]: 486/1024 cut-off events. [2024-11-22 21:37:55,824 INFO L125 PetriNetUnfolderBase]: For 1413/1413 co-relation queries the response was YES. [2024-11-22 21:37:55,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 1024 events. 486/1024 cut-off events. For 1413/1413 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5126 event pairs, 178 based on Foata normal form. 16/986 useless extension candidates. Maximal degree in co-relation 3289. Up to 496 conditions per place. [2024-11-22 21:37:55,832 INFO L140 encePairwiseOnDemand]: 59/75 looper letters, 99 selfloop transitions, 54 changer transitions 17/179 dead transitions. [2024-11-22 21:37:55,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 179 transitions, 1344 flow [2024-11-22 21:37:55,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 21:37:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 21:37:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 543 transitions. [2024-11-22 21:37:55,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.556923076923077 [2024-11-22 21:37:55,834 INFO L175 Difference]: Start difference. First operand has 96 places, 109 transitions, 656 flow. Second operand 13 states and 543 transitions. [2024-11-22 21:37:55,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 179 transitions, 1344 flow [2024-11-22 21:37:55,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 179 transitions, 1262 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-11-22 21:37:55,850 INFO L231 Difference]: Finished difference. Result has 102 places, 124 transitions, 890 flow [2024-11-22 21:37:55,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=890, PETRI_PLACES=102, PETRI_TRANSITIONS=124} [2024-11-22 21:37:55,852 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 34 predicate places. [2024-11-22 21:37:55,852 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 124 transitions, 890 flow [2024-11-22 21:37:55,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:55,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:55,853 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] [2024-11-22 21:37:55,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 21:37:55,854 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:55,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:55,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1532111107, now seen corresponding path program 1 times [2024-11-22 21:37:55,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:55,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687522659] [2024-11-22 21:37:55,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:37:55,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:37:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:56,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:56,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687522659] [2024-11-22 21:37:56,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687522659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:56,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:56,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 21:37:56,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127694005] [2024-11-22 21:37:56,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:56,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:37:56,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:56,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:37:56,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:37:56,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 75 [2024-11-22 21:37:56,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 124 transitions, 890 flow. Second operand has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:56,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:56,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 75 [2024-11-22 21:37:56,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:57,451 INFO L124 PetriNetUnfolderBase]: 759/1584 cut-off events. [2024-11-22 21:37:57,451 INFO L125 PetriNetUnfolderBase]: For 2669/2714 co-relation queries the response was YES. [2024-11-22 21:37:57,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 1584 events. 759/1584 cut-off events. For 2669/2714 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 9606 event pairs, 139 based on Foata normal form. 67/1553 useless extension candidates. Maximal degree in co-relation 5296. Up to 495 conditions per place. [2024-11-22 21:37:57,464 INFO L140 encePairwiseOnDemand]: 57/75 looper letters, 192 selfloop transitions, 112 changer transitions 16/332 dead transitions. [2024-11-22 21:37:57,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 332 transitions, 2723 flow [2024-11-22 21:37:57,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 21:37:57,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-22 21:37:57,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1078 transitions. [2024-11-22 21:37:57,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5528205128205128 [2024-11-22 21:37:57,468 INFO L175 Difference]: Start difference. First operand has 102 places, 124 transitions, 890 flow. Second operand 26 states and 1078 transitions. [2024-11-22 21:37:57,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 332 transitions, 2723 flow [2024-11-22 21:37:57,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 332 transitions, 2613 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-22 21:37:57,485 INFO L231 Difference]: Finished difference. Result has 137 places, 199 transitions, 1745 flow [2024-11-22 21:37:57,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1745, PETRI_PLACES=137, PETRI_TRANSITIONS=199} [2024-11-22 21:37:57,486 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 69 predicate places. [2024-11-22 21:37:57,486 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 199 transitions, 1745 flow [2024-11-22 21:37:57,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:57,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:57,487 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] [2024-11-22 21:37:57,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 21:37:57,487 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:57,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:57,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1531096195, now seen corresponding path program 4 times [2024-11-22 21:37:57,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:57,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333365376] [2024-11-22 21:37:57,488 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:37:57,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:57,497 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:37:57,498 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:37:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:57,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:57,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333365376] [2024-11-22 21:37:57,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333365376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:57,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:57,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 21:37:57,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677157225] [2024-11-22 21:37:57,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:57,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:37:57,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:57,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:37:57,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:37:57,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 75 [2024-11-22 21:37:57,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 199 transitions, 1745 flow. Second operand has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:57,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:57,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 75 [2024-11-22 21:37:57,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:58,134 INFO L124 PetriNetUnfolderBase]: 845/1952 cut-off events. [2024-11-22 21:37:58,134 INFO L125 PetriNetUnfolderBase]: For 4930/4964 co-relation queries the response was YES. [2024-11-22 21:37:58,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7385 conditions, 1952 events. 845/1952 cut-off events. For 4930/4964 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13122 event pairs, 81 based on Foata normal form. 78/1918 useless extension candidates. Maximal degree in co-relation 7342. Up to 434 conditions per place. [2024-11-22 21:37:58,151 INFO L140 encePairwiseOnDemand]: 66/75 looper letters, 183 selfloop transitions, 67 changer transitions 3/310 dead transitions. [2024-11-22 21:37:58,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 310 transitions, 2823 flow [2024-11-22 21:37:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:37:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:37:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 330 transitions. [2024-11-22 21:37:58,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-22 21:37:58,154 INFO L175 Difference]: Start difference. First operand has 137 places, 199 transitions, 1745 flow. Second operand 6 states and 330 transitions. [2024-11-22 21:37:58,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 310 transitions, 2823 flow [2024-11-22 21:37:58,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 310 transitions, 2753 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-11-22 21:37:58,185 INFO L231 Difference]: Finished difference. Result has 139 places, 219 transitions, 1955 flow [2024-11-22 21:37:58,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1955, PETRI_PLACES=139, PETRI_TRANSITIONS=219} [2024-11-22 21:37:58,186 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 71 predicate places. [2024-11-22 21:37:58,186 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 219 transitions, 1955 flow [2024-11-22 21:37:58,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:58,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:58,187 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] [2024-11-22 21:37:58,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 21:37:58,187 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:58,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:58,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1282586751, now seen corresponding path program 5 times [2024-11-22 21:37:58,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:58,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048929520] [2024-11-22 21:37:58,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:37:58,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:58,202 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:37:58,202 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:37:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:37:58,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:37:58,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048929520] [2024-11-22 21:37:58,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048929520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:37:58,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:37:58,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 21:37:58,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951989903] [2024-11-22 21:37:58,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:37:58,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:37:58,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:37:58,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:37:58,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:37:58,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-22 21:37:58,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 219 transitions, 1955 flow. Second operand has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:58,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:37:58,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-22 21:37:58,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:37:59,700 INFO L124 PetriNetUnfolderBase]: 972/2161 cut-off events. [2024-11-22 21:37:59,700 INFO L125 PetriNetUnfolderBase]: For 6954/6991 co-relation queries the response was YES. [2024-11-22 21:37:59,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9278 conditions, 2161 events. 972/2161 cut-off events. For 6954/6991 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14461 event pairs, 322 based on Foata normal form. 40/2058 useless extension candidates. Maximal degree in co-relation 9234. Up to 1295 conditions per place. [2024-11-22 21:37:59,722 INFO L140 encePairwiseOnDemand]: 58/75 looper letters, 159 selfloop transitions, 97 changer transitions 11/284 dead transitions. [2024-11-22 21:37:59,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 284 transitions, 2968 flow [2024-11-22 21:37:59,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 21:37:59,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 21:37:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 757 transitions. [2024-11-22 21:37:59,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5607407407407408 [2024-11-22 21:37:59,725 INFO L175 Difference]: Start difference. First operand has 139 places, 219 transitions, 1955 flow. Second operand 18 states and 757 transitions. [2024-11-22 21:37:59,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 284 transitions, 2968 flow [2024-11-22 21:37:59,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 284 transitions, 2938 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-22 21:37:59,771 INFO L231 Difference]: Finished difference. Result has 157 places, 234 transitions, 2337 flow [2024-11-22 21:37:59,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2337, PETRI_PLACES=157, PETRI_TRANSITIONS=234} [2024-11-22 21:37:59,772 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 89 predicate places. [2024-11-22 21:37:59,772 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 234 transitions, 2337 flow [2024-11-22 21:37:59,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:37:59,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:37:59,772 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] [2024-11-22 21:37:59,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 21:37:59,773 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:37:59,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:37:59,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1148536671, now seen corresponding path program 6 times [2024-11-22 21:37:59,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:37:59,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670763117] [2024-11-22 21:37:59,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:37:59,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:37:59,796 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 21:37:59,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:38:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:38:00,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:38:00,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670763117] [2024-11-22 21:38:00,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670763117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:38:00,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:38:00,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 21:38:00,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710628914] [2024-11-22 21:38:00,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:38:00,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:38:00,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:38:00,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:38:00,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:38:00,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-22 21:38:00,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 234 transitions, 2337 flow. Second operand has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:00,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:38:00,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-22 21:38:00,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:38:01,013 INFO L124 PetriNetUnfolderBase]: 563/1261 cut-off events. [2024-11-22 21:38:01,014 INFO L125 PetriNetUnfolderBase]: For 4250/4256 co-relation queries the response was YES. [2024-11-22 21:38:01,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5418 conditions, 1261 events. 563/1261 cut-off events. For 4250/4256 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7266 event pairs, 251 based on Foata normal form. 6/1184 useless extension candidates. Maximal degree in co-relation 5377. Up to 911 conditions per place. [2024-11-22 21:38:01,026 INFO L140 encePairwiseOnDemand]: 61/75 looper letters, 92 selfloop transitions, 38 changer transitions 7/151 dead transitions. [2024-11-22 21:38:01,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 151 transitions, 1524 flow [2024-11-22 21:38:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 21:38:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 21:38:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 521 transitions. [2024-11-22 21:38:01,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5343589743589744 [2024-11-22 21:38:01,028 INFO L175 Difference]: Start difference. First operand has 157 places, 234 transitions, 2337 flow. Second operand 13 states and 521 transitions. [2024-11-22 21:38:01,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 151 transitions, 1524 flow [2024-11-22 21:38:01,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 151 transitions, 1315 flow, removed 50 selfloop flow, removed 19 redundant places. [2024-11-22 21:38:01,048 INFO L231 Difference]: Finished difference. Result has 126 places, 132 transitions, 1028 flow [2024-11-22 21:38:01,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1028, PETRI_PLACES=126, PETRI_TRANSITIONS=132} [2024-11-22 21:38:01,049 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 58 predicate places. [2024-11-22 21:38:01,049 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 132 transitions, 1028 flow [2024-11-22 21:38:01,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:01,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:38:01,050 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] [2024-11-22 21:38:01,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 21:38:01,050 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:38:01,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:38:01,050 INFO L85 PathProgramCache]: Analyzing trace with hash -994499446, now seen corresponding path program 1 times [2024-11-22 21:38:01,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:38:01,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551784944] [2024-11-22 21:38:01,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:38:01,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:38:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:38:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:38:01,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:38:01,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551784944] [2024-11-22 21:38:01,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551784944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:38:01,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:38:01,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 21:38:01,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231137317] [2024-11-22 21:38:01,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:38:01,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:38:01,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:38:01,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:38:01,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:38:01,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-22 21:38:01,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 132 transitions, 1028 flow. Second operand has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 11 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:01,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:38:01,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-22 21:38:01,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:38:02,718 INFO L124 PetriNetUnfolderBase]: 1280/2745 cut-off events. [2024-11-22 21:38:02,718 INFO L125 PetriNetUnfolderBase]: For 6331/6345 co-relation queries the response was YES. [2024-11-22 21:38:02,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10310 conditions, 2745 events. 1280/2745 cut-off events. For 6331/6345 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 16067 event pairs, 383 based on Foata normal form. 28/2603 useless extension candidates. Maximal degree in co-relation 10277. Up to 961 conditions per place. [2024-11-22 21:38:02,744 INFO L140 encePairwiseOnDemand]: 60/75 looper letters, 258 selfloop transitions, 119 changer transitions 0/390 dead transitions. [2024-11-22 21:38:02,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 390 transitions, 3332 flow [2024-11-22 21:38:02,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 21:38:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-22 21:38:02,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 890 transitions. [2024-11-22 21:38:02,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.624561403508772 [2024-11-22 21:38:02,746 INFO L175 Difference]: Start difference. First operand has 126 places, 132 transitions, 1028 flow. Second operand 19 states and 890 transitions. [2024-11-22 21:38:02,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 390 transitions, 3332 flow [2024-11-22 21:38:02,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 390 transitions, 3114 flow, removed 39 selfloop flow, removed 17 redundant places. [2024-11-22 21:38:02,782 INFO L231 Difference]: Finished difference. Result has 136 places, 216 transitions, 1990 flow [2024-11-22 21:38:02,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1990, PETRI_PLACES=136, PETRI_TRANSITIONS=216} [2024-11-22 21:38:02,783 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 68 predicate places. [2024-11-22 21:38:02,784 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 216 transitions, 1990 flow [2024-11-22 21:38:02,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 11 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:02,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:38:02,784 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] [2024-11-22 21:38:02,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 21:38:02,785 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:38:02,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:38:02,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1791352890, now seen corresponding path program 1 times [2024-11-22 21:38:02,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:38:02,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339510031] [2024-11-22 21:38:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:38:02,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:38:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:38:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:38:02,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:38:02,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339510031] [2024-11-22 21:38:02,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339510031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:38:02,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:38:02,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 21:38:02,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152569176] [2024-11-22 21:38:02,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:38:02,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:38:02,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:38:02,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:38:02,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:38:02,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 75 [2024-11-22 21:38:02,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 216 transitions, 1990 flow. Second operand has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:02,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:38:02,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 75 [2024-11-22 21:38:02,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:38:03,448 INFO L124 PetriNetUnfolderBase]: 1540/3254 cut-off events. [2024-11-22 21:38:03,448 INFO L125 PetriNetUnfolderBase]: For 13721/13746 co-relation queries the response was YES. [2024-11-22 21:38:03,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14783 conditions, 3254 events. 1540/3254 cut-off events. For 13721/13746 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 19257 event pairs, 289 based on Foata normal form. 100/3145 useless extension candidates. Maximal degree in co-relation 14745. Up to 1508 conditions per place. [2024-11-22 21:38:03,473 INFO L140 encePairwiseOnDemand]: 61/75 looper letters, 302 selfloop transitions, 72 changer transitions 0/390 dead transitions. [2024-11-22 21:38:03,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 390 transitions, 4457 flow [2024-11-22 21:38:03,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:38:03,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:38:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 319 transitions. [2024-11-22 21:38:03,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6076190476190476 [2024-11-22 21:38:03,475 INFO L175 Difference]: Start difference. First operand has 136 places, 216 transitions, 1990 flow. Second operand 7 states and 319 transitions. [2024-11-22 21:38:03,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 390 transitions, 4457 flow [2024-11-22 21:38:03,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 390 transitions, 4199 flow, removed 128 selfloop flow, removed 1 redundant places. [2024-11-22 21:38:03,526 INFO L231 Difference]: Finished difference. Result has 146 places, 258 transitions, 2554 flow [2024-11-22 21:38:03,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2554, PETRI_PLACES=146, PETRI_TRANSITIONS=258} [2024-11-22 21:38:03,527 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 78 predicate places. [2024-11-22 21:38:03,528 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 258 transitions, 2554 flow [2024-11-22 21:38:03,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:03,528 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:38:03,528 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] [2024-11-22 21:38:03,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 21:38:03,529 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:38:03,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:38:03,529 INFO L85 PathProgramCache]: Analyzing trace with hash 640399930, now seen corresponding path program 2 times [2024-11-22 21:38:03,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:38:03,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605920070] [2024-11-22 21:38:03,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:38:03,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:38:03,539 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:38:03,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:38:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:38:03,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:38:03,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605920070] [2024-11-22 21:38:03,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605920070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:38:03,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:38:03,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 21:38:03,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271249864] [2024-11-22 21:38:03,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:38:03,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:38:03,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:38:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:38:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:38:04,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-22 21:38:04,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 258 transitions, 2554 flow. Second operand has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 11 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:04,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:38:04,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-22 21:38:04,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:38:05,658 INFO L124 PetriNetUnfolderBase]: 2529/5236 cut-off events. [2024-11-22 21:38:05,658 INFO L125 PetriNetUnfolderBase]: For 29756/29804 co-relation queries the response was YES. [2024-11-22 21:38:05,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26330 conditions, 5236 events. 2529/5236 cut-off events. For 29756/29804 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 35333 event pairs, 853 based on Foata normal form. 35/4947 useless extension candidates. Maximal degree in co-relation 26287. Up to 2944 conditions per place. [2024-11-22 21:38:05,704 INFO L140 encePairwiseOnDemand]: 60/75 looper letters, 460 selfloop transitions, 156 changer transitions 0/630 dead transitions. [2024-11-22 21:38:05,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 630 transitions, 7162 flow [2024-11-22 21:38:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 21:38:05,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-22 21:38:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1080 transitions. [2024-11-22 21:38:05,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6260869565217392 [2024-11-22 21:38:05,707 INFO L175 Difference]: Start difference. First operand has 146 places, 258 transitions, 2554 flow. Second operand 23 states and 1080 transitions. [2024-11-22 21:38:05,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 630 transitions, 7162 flow [2024-11-22 21:38:05,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 630 transitions, 6946 flow, removed 107 selfloop flow, removed 1 redundant places. [2024-11-22 21:38:05,814 INFO L231 Difference]: Finished difference. Result has 182 places, 397 transitions, 4618 flow [2024-11-22 21:38:05,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=2490, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4618, PETRI_PLACES=182, PETRI_TRANSITIONS=397} [2024-11-22 21:38:05,815 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 114 predicate places. [2024-11-22 21:38:05,816 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 397 transitions, 4618 flow [2024-11-22 21:38:05,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 11 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:05,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:38:05,816 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] [2024-11-22 21:38:05,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 21:38:05,817 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:38:05,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:38:05,817 INFO L85 PathProgramCache]: Analyzing trace with hash 933593372, now seen corresponding path program 3 times [2024-11-22 21:38:05,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:38:05,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780703450] [2024-11-22 21:38:05,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:38:05,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:38:05,827 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 21:38:05,827 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:38:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:38:06,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:38:06,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780703450] [2024-11-22 21:38:06,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780703450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:38:06,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:38:06,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 21:38:06,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939347349] [2024-11-22 21:38:06,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:38:06,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:38:06,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:38:06,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:38:06,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:38:06,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-22 21:38:06,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 397 transitions, 4618 flow. Second operand has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 11 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:06,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:38:06,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-22 21:38:06,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:38:08,052 INFO L124 PetriNetUnfolderBase]: 3596/7619 cut-off events. [2024-11-22 21:38:08,053 INFO L125 PetriNetUnfolderBase]: For 73558/73622 co-relation queries the response was YES. [2024-11-22 21:38:08,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42701 conditions, 7619 events. 3596/7619 cut-off events. For 73558/73622 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 56380 event pairs, 634 based on Foata normal form. 159/7311 useless extension candidates. Maximal degree in co-relation 42642. Up to 2051 conditions per place. [2024-11-22 21:38:08,129 INFO L140 encePairwiseOnDemand]: 60/75 looper letters, 442 selfloop transitions, 494 changer transitions 2/952 dead transitions. [2024-11-22 21:38:08,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 952 transitions, 12963 flow [2024-11-22 21:38:08,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 21:38:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-22 21:38:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 908 transitions. [2024-11-22 21:38:08,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6053333333333333 [2024-11-22 21:38:08,132 INFO L175 Difference]: Start difference. First operand has 182 places, 397 transitions, 4618 flow. Second operand 20 states and 908 transitions. [2024-11-22 21:38:08,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 952 transitions, 12963 flow [2024-11-22 21:38:08,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 952 transitions, 12443 flow, removed 259 selfloop flow, removed 1 redundant places. [2024-11-22 21:38:08,391 INFO L231 Difference]: Finished difference. Result has 214 places, 691 transitions, 10331 flow [2024-11-22 21:38:08,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=4264, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=10331, PETRI_PLACES=214, PETRI_TRANSITIONS=691} [2024-11-22 21:38:08,392 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 146 predicate places. [2024-11-22 21:38:08,393 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 691 transitions, 10331 flow [2024-11-22 21:38:08,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 11 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:08,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:38:08,393 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] [2024-11-22 21:38:08,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 21:38:08,394 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:38:08,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:38:08,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1729381604, now seen corresponding path program 4 times [2024-11-22 21:38:08,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:38:08,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928132299] [2024-11-22 21:38:08,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:38:08,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:38:08,406 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:38:08,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:38:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:38:08,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:38:08,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928132299] [2024-11-22 21:38:08,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928132299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:38:08,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:38:08,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 21:38:08,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134710863] [2024-11-22 21:38:08,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:38:08,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 21:38:08,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:38:08,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 21:38:08,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-22 21:38:09,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-22 21:38:09,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 691 transitions, 10331 flow. Second operand has 12 states, 12 states have (on average 35.416666666666664) internal successors, (425), 12 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:09,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:38:09,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-22 21:38:09,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:38:11,191 INFO L124 PetriNetUnfolderBase]: 3650/7611 cut-off events. [2024-11-22 21:38:11,191 INFO L125 PetriNetUnfolderBase]: For 103680/103750 co-relation queries the response was YES. [2024-11-22 21:38:11,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48897 conditions, 7611 events. 3650/7611 cut-off events. For 103680/103750 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 56254 event pairs, 1393 based on Foata normal form. 20/7157 useless extension candidates. Maximal degree in co-relation 48823. Up to 6461 conditions per place. [2024-11-22 21:38:11,269 INFO L140 encePairwiseOnDemand]: 60/75 looper letters, 639 selfloop transitions, 73 changer transitions 2/728 dead transitions. [2024-11-22 21:38:11,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 728 transitions, 11865 flow [2024-11-22 21:38:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 21:38:11,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-22 21:38:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 681 transitions. [2024-11-22 21:38:11,272 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675 [2024-11-22 21:38:11,272 INFO L175 Difference]: Start difference. First operand has 214 places, 691 transitions, 10331 flow. Second operand 16 states and 681 transitions. [2024-11-22 21:38:11,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 728 transitions, 11865 flow [2024-11-22 21:38:11,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 728 transitions, 10916 flow, removed 348 selfloop flow, removed 14 redundant places. [2024-11-22 21:38:11,870 INFO L231 Difference]: Finished difference. Result has 219 places, 653 transitions, 9137 flow [2024-11-22 21:38:11,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=8139, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9137, PETRI_PLACES=219, PETRI_TRANSITIONS=653} [2024-11-22 21:38:11,871 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 151 predicate places. [2024-11-22 21:38:11,872 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 653 transitions, 9137 flow [2024-11-22 21:38:11,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.416666666666664) internal successors, (425), 12 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:11,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:38:11,872 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:38:11,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 21:38:11,873 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:38:11,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:38:11,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2052315041, now seen corresponding path program 1 times [2024-11-22 21:38:11,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:38:11,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000725644] [2024-11-22 21:38:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:38:11,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:38:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:38:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:38:12,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:38:12,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000725644] [2024-11-22 21:38:12,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000725644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:38:12,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:38:12,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 21:38:12,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325030420] [2024-11-22 21:38:12,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:38:12,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:38:12,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:38:12,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:38:12,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:38:12,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 75 [2024-11-22 21:38:12,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 653 transitions, 9137 flow. Second operand has 11 states, 11 states have (on average 34.18181818181818) internal successors, (376), 11 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:12,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:38:12,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 75 [2024-11-22 21:38:12,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:38:16,063 INFO L124 PetriNetUnfolderBase]: 5755/11767 cut-off events. [2024-11-22 21:38:16,063 INFO L125 PetriNetUnfolderBase]: For 126370/126443 co-relation queries the response was YES. [2024-11-22 21:38:16,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69925 conditions, 11767 events. 5755/11767 cut-off events. For 126370/126443 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 93047 event pairs, 806 based on Foata normal form. 90/11094 useless extension candidates. Maximal degree in co-relation 69851. Up to 3143 conditions per place. [2024-11-22 21:38:16,173 INFO L140 encePairwiseOnDemand]: 54/75 looper letters, 550 selfloop transitions, 887 changer transitions 0/1447 dead transitions. [2024-11-22 21:38:16,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 1447 transitions, 22487 flow [2024-11-22 21:38:16,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-22 21:38:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-22 21:38:16,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1273 transitions. [2024-11-22 21:38:16,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5657777777777778 [2024-11-22 21:38:16,176 INFO L175 Difference]: Start difference. First operand has 219 places, 653 transitions, 9137 flow. Second operand 30 states and 1273 transitions. [2024-11-22 21:38:16,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 1447 transitions, 22487 flow [2024-11-22 21:38:16,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 1447 transitions, 22013 flow, removed 220 selfloop flow, removed 6 redundant places. [2024-11-22 21:38:16,774 INFO L231 Difference]: Finished difference. Result has 264 places, 1212 transitions, 20590 flow [2024-11-22 21:38:16,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=8875, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=20590, PETRI_PLACES=264, PETRI_TRANSITIONS=1212} [2024-11-22 21:38:16,775 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 196 predicate places. [2024-11-22 21:38:16,775 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 1212 transitions, 20590 flow [2024-11-22 21:38:16,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.18181818181818) internal successors, (376), 11 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:16,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:38:16,776 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:38:16,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 21:38:16,776 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:38:16,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:38:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1487496779, now seen corresponding path program 2 times [2024-11-22 21:38:16,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:38:16,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440437491] [2024-11-22 21:38:16,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:38:16,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:38:16,790 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:38:16,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:38:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:38:17,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:38:17,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440437491] [2024-11-22 21:38:17,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440437491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:38:17,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:38:17,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 21:38:17,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977588468] [2024-11-22 21:38:17,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:38:17,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:38:17,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:38:17,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:38:17,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:38:17,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 75 [2024-11-22 21:38:17,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 1212 transitions, 20590 flow. Second operand has 11 states, 11 states have (on average 34.18181818181818) internal successors, (376), 11 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:17,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:38:17,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 75 [2024-11-22 21:38:17,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:38:23,642 INFO L124 PetriNetUnfolderBase]: 7246/14678 cut-off events. [2024-11-22 21:38:23,642 INFO L125 PetriNetUnfolderBase]: For 222997/223058 co-relation queries the response was YES. [2024-11-22 21:38:23,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102009 conditions, 14678 events. 7246/14678 cut-off events. For 222997/223058 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 120486 event pairs, 1224 based on Foata normal form. 84/13789 useless extension candidates. Maximal degree in co-relation 101913. Up to 4480 conditions per place. [2024-11-22 21:38:23,793 INFO L140 encePairwiseOnDemand]: 54/75 looper letters, 747 selfloop transitions, 1193 changer transitions 0/1950 dead transitions. [2024-11-22 21:38:23,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1950 transitions, 35955 flow [2024-11-22 21:38:23,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-22 21:38:23,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-22 21:38:23,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1210 transitions. [2024-11-22 21:38:23,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2024-11-22 21:38:23,796 INFO L175 Difference]: Start difference. First operand has 264 places, 1212 transitions, 20590 flow. Second operand 28 states and 1210 transitions. [2024-11-22 21:38:23,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1950 transitions, 35955 flow [2024-11-22 21:38:25,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1950 transitions, 34235 flow, removed 859 selfloop flow, removed 1 redundant places. [2024-11-22 21:38:25,487 INFO L231 Difference]: Finished difference. Result has 312 places, 1709 transitions, 32603 flow [2024-11-22 21:38:25,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=19392, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=716, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=32603, PETRI_PLACES=312, PETRI_TRANSITIONS=1709} [2024-11-22 21:38:25,489 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 244 predicate places. [2024-11-22 21:38:25,489 INFO L471 AbstractCegarLoop]: Abstraction has has 312 places, 1709 transitions, 32603 flow [2024-11-22 21:38:25,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.18181818181818) internal successors, (376), 11 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:25,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:38:25,490 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:38:25,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 21:38:25,490 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:38:25,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:38:25,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2058856147, now seen corresponding path program 3 times [2024-11-22 21:38:25,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:38:25,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521704348] [2024-11-22 21:38:25,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:38:25,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:38:25,506 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 21:38:25,507 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:38:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:38:25,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:38:25,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521704348] [2024-11-22 21:38:25,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521704348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:38:25,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:38:25,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 21:38:25,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390400882] [2024-11-22 21:38:25,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:38:25,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:38:25,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:38:25,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:38:25,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:38:26,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 75 [2024-11-22 21:38:26,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 1709 transitions, 32603 flow. Second operand has 10 states, 10 states have (on average 35.2) internal successors, (352), 10 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:26,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:38:26,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 75 [2024-11-22 21:38:26,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:38:33,999 INFO L124 PetriNetUnfolderBase]: 8200/16707 cut-off events. [2024-11-22 21:38:33,999 INFO L125 PetriNetUnfolderBase]: For 313153/313632 co-relation queries the response was YES. [2024-11-22 21:38:34,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126252 conditions, 16707 events. 8200/16707 cut-off events. For 313153/313632 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 142032 event pairs, 1310 based on Foata normal form. 285/15850 useless extension candidates. Maximal degree in co-relation 126134. Up to 5270 conditions per place. [2024-11-22 21:38:34,223 INFO L140 encePairwiseOnDemand]: 57/75 looper letters, 1017 selfloop transitions, 1089 changer transitions 0/2226 dead transitions. [2024-11-22 21:38:34,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 2226 transitions, 46150 flow [2024-11-22 21:38:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 21:38:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-22 21:38:34,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 909 transitions. [2024-11-22 21:38:34,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5771428571428572 [2024-11-22 21:38:34,226 INFO L175 Difference]: Start difference. First operand has 312 places, 1709 transitions, 32603 flow. Second operand 21 states and 909 transitions. [2024-11-22 21:38:34,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 2226 transitions, 46150 flow [2024-11-22 21:38:37,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 2226 transitions, 45368 flow, removed 390 selfloop flow, removed 1 redundant places. [2024-11-22 21:38:37,558 INFO L231 Difference]: Finished difference. Result has 344 places, 1982 transitions, 42039 flow [2024-11-22 21:38:37,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=31917, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=818, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=779, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=42039, PETRI_PLACES=344, PETRI_TRANSITIONS=1982} [2024-11-22 21:38:37,560 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 276 predicate places. [2024-11-22 21:38:37,560 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 1982 transitions, 42039 flow [2024-11-22 21:38:37,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.2) internal successors, (352), 10 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:37,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:38:37,560 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:38:37,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 21:38:37,561 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:38:37,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:38:37,561 INFO L85 PathProgramCache]: Analyzing trace with hash -129888623, now seen corresponding path program 4 times [2024-11-22 21:38:37,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:38:37,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494645550] [2024-11-22 21:38:37,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:38:37,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:38:37,574 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:38:37,575 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:38:37,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:38:37,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:38:37,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494645550] [2024-11-22 21:38:37,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494645550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:38:37,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065442886] [2024-11-22 21:38:37,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:38:37,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:38:37,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:38:37,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:38:37,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:38:37,990 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:38:37,991 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:38:37,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 21:38:37,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:38:38,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-22 21:38:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:38:38,096 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 21:38:38,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065442886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:38:38,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 21:38:38,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2024-11-22 21:38:38,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070132625] [2024-11-22 21:38:38,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:38:38,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:38:38,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:38:38,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:38:38,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:38:38,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 75 [2024-11-22 21:38:38,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 1982 transitions, 42039 flow. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:38,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:38:38,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 75 [2024-11-22 21:38:38,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:38:46,682 INFO L124 PetriNetUnfolderBase]: 8294/17479 cut-off events. [2024-11-22 21:38:46,682 INFO L125 PetriNetUnfolderBase]: For 369352/369891 co-relation queries the response was YES. [2024-11-22 21:38:47,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136377 conditions, 17479 events. 8294/17479 cut-off events. For 369352/369891 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 152115 event pairs, 422 based on Foata normal form. 306/16639 useless extension candidates. Maximal degree in co-relation 136246. Up to 4348 conditions per place. [2024-11-22 21:38:47,272 INFO L140 encePairwiseOnDemand]: 67/75 looper letters, 1488 selfloop transitions, 725 changer transitions 0/2593 dead transitions. [2024-11-22 21:38:47,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 2593 transitions, 57836 flow [2024-11-22 21:38:47,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:38:47,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:38:47,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 382 transitions. [2024-11-22 21:38:47,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7276190476190476 [2024-11-22 21:38:47,274 INFO L175 Difference]: Start difference. First operand has 344 places, 1982 transitions, 42039 flow. Second operand 7 states and 382 transitions. [2024-11-22 21:38:47,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 2593 transitions, 57836 flow [2024-11-22 21:38:52,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 2593 transitions, 57180 flow, removed 327 selfloop flow, removed 1 redundant places. [2024-11-22 21:38:53,010 INFO L231 Difference]: Finished difference. Result has 350 places, 2077 transitions, 45202 flow [2024-11-22 21:38:53,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=41605, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1982, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=631, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=45202, PETRI_PLACES=350, PETRI_TRANSITIONS=2077} [2024-11-22 21:38:53,012 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 282 predicate places. [2024-11-22 21:38:53,013 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 2077 transitions, 45202 flow [2024-11-22 21:38:53,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:53,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:38:53,013 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:38:53,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:38:53,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-22 21:38:53,214 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-22 21:38:53,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:38:53,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1016593183, now seen corresponding path program 5 times [2024-11-22 21:38:53,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:38:53,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837557879] [2024-11-22 21:38:53,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:38:53,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:38:53,235 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:38:53,237 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:38:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:38:53,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:38:53,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837557879] [2024-11-22 21:38:53,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837557879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:38:53,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033560643] [2024-11-22 21:38:53,709 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:38:53,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:38:53,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:38:53,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:38:53,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:38:53,811 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:38:53,812 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:38:53,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 21:38:53,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:38:53,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-22 21:38:54,062 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 21:38:54,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2024-11-22 21:38:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:38:54,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:38:54,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-11-22 21:38:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:38:54,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033560643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:38:54,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:38:54,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 22 [2024-11-22 21:38:54,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443437675] [2024-11-22 21:38:54,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:38:54,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 21:38:54,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:38:54,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 21:38:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-11-22 21:38:55,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 75 [2024-11-22 21:38:55,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 2077 transitions, 45202 flow. Second operand has 23 states, 23 states have (on average 35.69565217391305) internal successors, (821), 23 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:38:55,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:38:55,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 75 [2024-11-22 21:38:55,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand