./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:30:15,611 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:30:15,671 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:30:15,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:30:15,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:30:15,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:30:15,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:30:15,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:30:15,703 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:30:15,703 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:30:15,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:30:15,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:30:15,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:30:15,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:30:15,704 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:30:15,704 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:30:15,704 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:30:15,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:30:15,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:30:15,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:30:15,704 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:30:15,704 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:30:15,704 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:30:15,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:30:15,704 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:30:15,705 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:30:15,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:30:15,705 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2025-03-17 14:30:15,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:30:15,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:30:15,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:30:15,937 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:30:15,937 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:30:15,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2025-03-17 14:30:17,055 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea15778fc/0209fb80505e4f70a5e1aecb3d77308b/FLAGd09156010 [2025-03-17 14:30:17,300 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:30:17,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2025-03-17 14:30:17,314 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea15778fc/0209fb80505e4f70a5e1aecb3d77308b/FLAGd09156010 [2025-03-17 14:30:17,620 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea15778fc/0209fb80505e4f70a5e1aecb3d77308b [2025-03-17 14:30:17,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:30:17,624 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:30:17,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:30:17,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:30:17,629 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:30:17,630 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfb2a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17, skipping insertion in model container [2025-03-17 14:30:17,631 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:30:17,777 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 14:30:17,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:30:17,787 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:30:17,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:30:17,820 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:30:17,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17 WrapperNode [2025-03-17 14:30:17,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:30:17,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:30:17,821 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:30:17,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:30:17,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,845 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 239 [2025-03-17 14:30:17,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:30:17,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:30:17,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:30:17,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:30:17,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,853 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,862 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-17 14:30:17,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,871 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,877 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:30:17,880 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:30:17,880 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:30:17,880 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:30:17,884 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17" (1/1) ... [2025-03-17 14:30:17,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:30:17,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:30:17,905 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) [2025-03-17 14:30:17,906 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 [2025-03-17 14:30:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:30:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 14:30:17,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 14:30:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 14:30:17,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 14:30:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 14:30:17,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 14:30:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 14:30:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 14:30:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 14:30:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 14:30:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 14:30:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 14:30:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 14:30:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:30:17,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:30:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 14:30:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 14:30:17,923 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 14:30:18,003 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:30:18,005 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:30:18,307 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:30:18,307 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:30:18,527 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:30:18,528 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:30:18,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:30:18 BoogieIcfgContainer [2025-03-17 14:30:18,529 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:30:18,530 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:30:18,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:30:18,534 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:30:18,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:30:17" (1/3) ... [2025-03-17 14:30:18,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3709e3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:30:18, skipping insertion in model container [2025-03-17 14:30:18,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:30:17" (2/3) ... [2025-03-17 14:30:18,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3709e3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:30:18, skipping insertion in model container [2025-03-17 14:30:18,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:30:18" (3/3) ... [2025-03-17 14:30:18,536 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2025-03-17 14:30:18,548 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:30:18,549 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-queue-add-3-nl.wvr.c that has 4 procedures, 54 locations, 1 initial locations, 5 loop locations, and 16 error locations. [2025-03-17 14:30:18,549 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:30:18,600 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 14:30:18,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 60 transitions, 141 flow [2025-03-17 14:30:18,656 INFO L124 PetriNetUnfolderBase]: 7/57 cut-off events. [2025-03-17 14:30:18,659 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 14:30:18,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 7/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 142 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2025-03-17 14:30:18,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 60 transitions, 141 flow [2025-03-17 14:30:18,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 56 transitions, 130 flow [2025-03-17 14:30:18,672 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:30:18,679 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;@3cbd125, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:30:18,679 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-17 14:30:18,682 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:30:18,682 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2025-03-17 14:30:18,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:30:18,682 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:18,682 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 14:30:18,682 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:18,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash 668594, now seen corresponding path program 1 times [2025-03-17 14:30:18,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:18,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160084785] [2025-03-17 14:30:18,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:18,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:18,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 14:30:18,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 14:30:18,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:18,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:30:18,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:18,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160084785] [2025-03-17 14:30:18,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160084785] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:18,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:18,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:30:18,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373375317] [2025-03-17 14:30:18,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:18,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:30:18,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:18,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:30:18,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:30:18,925 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:30:18,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2025-03-17 14:30:18,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:18,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:30:18,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:19,520 INFO L124 PetriNetUnfolderBase]: 3952/5920 cut-off events. [2025-03-17 14:30:19,520 INFO L125 PetriNetUnfolderBase]: For 289/289 co-relation queries the response was YES. [2025-03-17 14:30:19,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11621 conditions, 5920 events. 3952/5920 cut-off events. For 289/289 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 32791 event pairs, 3528 based on Foata normal form. 1/3860 useless extension candidates. Maximal degree in co-relation 11101. Up to 5391 conditions per place. [2025-03-17 14:30:19,563 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 40 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2025-03-17 14:30:19,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 202 flow [2025-03-17 14:30:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:30:19,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:30:19,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2025-03-17 14:30:19,572 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2025-03-17 14:30:19,573 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 130 flow. Second operand 3 states and 83 transitions. [2025-03-17 14:30:19,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 202 flow [2025-03-17 14:30:19,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 190 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-17 14:30:19,584 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 110 flow [2025-03-17 14:30:19,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2025-03-17 14:30:19,589 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -8 predicate places. [2025-03-17 14:30:19,589 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 110 flow [2025-03-17 14:30:19,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2025-03-17 14:30:19,590 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:19,590 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 14:30:19,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:30:19,590 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:19,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:19,591 INFO L85 PathProgramCache]: Analyzing trace with hash 668595, now seen corresponding path program 1 times [2025-03-17 14:30:19,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:19,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566229400] [2025-03-17 14:30:19,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:19,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:19,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 14:30:19,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 14:30:19,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:19,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:30:19,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:19,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566229400] [2025-03-17 14:30:19,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566229400] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:19,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:19,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:30:19,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49934851] [2025-03-17 14:30:19,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:19,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:30:19,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:19,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:30:19,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:30:19,858 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:30:19,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:30:19,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:19,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:30:19,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:20,347 INFO L124 PetriNetUnfolderBase]: 3953/5923 cut-off events. [2025-03-17 14:30:20,347 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2025-03-17 14:30:20,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11440 conditions, 5923 events. 3953/5923 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 32826 event pairs, 3528 based on Foata normal form. 0/3860 useless extension candidates. Maximal degree in co-relation 11411. Up to 5400 conditions per place. [2025-03-17 14:30:20,376 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 43 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2025-03-17 14:30:20,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 210 flow [2025-03-17 14:30:20,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:30:20,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:30:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2025-03-17 14:30:20,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4 [2025-03-17 14:30:20,379 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 110 flow. Second operand 4 states and 96 transitions. [2025-03-17 14:30:20,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 210 flow [2025-03-17 14:30:20,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:30:20,381 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 133 flow [2025-03-17 14:30:20,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2025-03-17 14:30:20,382 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2025-03-17 14:30:20,382 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 133 flow [2025-03-17 14:30:20,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:30:20,382 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:20,383 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-17 14:30:20,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:30:20,385 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:20,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash 20728269, now seen corresponding path program 1 times [2025-03-17 14:30:20,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:20,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30333592] [2025-03-17 14:30:20,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:20,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:20,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 14:30:20,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 14:30:20,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:20,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:30:20,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:20,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30333592] [2025-03-17 14:30:20,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30333592] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:20,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:20,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:30:20,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256481888] [2025-03-17 14:30:20,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:20,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:30:20,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:20,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:30:20,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:30:20,585 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:30:20,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:30:20,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:20,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:30:20,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:20,985 INFO L124 PetriNetUnfolderBase]: 3954/5926 cut-off events. [2025-03-17 14:30:20,985 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2025-03-17 14:30:20,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11457 conditions, 5926 events. 3954/5926 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 32794 event pairs, 3528 based on Foata normal form. 0/3862 useless extension candidates. Maximal degree in co-relation 11432. Up to 5399 conditions per place. [2025-03-17 14:30:21,011 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 43 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2025-03-17 14:30:21,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 239 flow [2025-03-17 14:30:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:30:21,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:30:21,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2025-03-17 14:30:21,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37 [2025-03-17 14:30:21,013 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 133 flow. Second operand 5 states and 111 transitions. [2025-03-17 14:30:21,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 239 flow [2025-03-17 14:30:21,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:30:21,014 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 167 flow [2025-03-17 14:30:21,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2025-03-17 14:30:21,015 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2025-03-17 14:30:21,015 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 167 flow [2025-03-17 14:30:21,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:30:21,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:21,015 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2025-03-17 14:30:21,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 14:30:21,015 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:21,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:21,016 INFO L85 PathProgramCache]: Analyzing trace with hash 642540676, now seen corresponding path program 1 times [2025-03-17 14:30:21,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:21,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241438791] [2025-03-17 14:30:21,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:21,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:21,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 14:30:21,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 14:30:21,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:21,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:30:21,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:21,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241438791] [2025-03-17 14:30:21,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241438791] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:30:21,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652089958] [2025-03-17 14:30:21,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:21,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:30:21,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:30:21,193 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) [2025-03-17 14:30:21,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 14:30:21,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 14:30:21,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 14:30:21,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:21,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:21,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 14:30:21,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:30:21,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-17 14:30:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:30:21,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:30:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:30:21,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652089958] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:30:21,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:30:21,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2025-03-17 14:30:21,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753259274] [2025-03-17 14:30:21,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:30:21,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:21,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:21,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:21,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:21,554 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:30:21,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 167 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 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) [2025-03-17 14:30:21,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:21,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:30:21,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:22,053 INFO L124 PetriNetUnfolderBase]: 3954/5925 cut-off events. [2025-03-17 14:30:22,054 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2025-03-17 14:30:22,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11470 conditions, 5925 events. 3954/5925 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 32844 event pairs, 3528 based on Foata normal form. 0/3864 useless extension candidates. Maximal degree in co-relation 11442. Up to 5399 conditions per place. [2025-03-17 14:30:22,077 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 42 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2025-03-17 14:30:22,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 261 flow [2025-03-17 14:30:22,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 14:30:22,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 14:30:22,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2025-03-17 14:30:22,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33055555555555555 [2025-03-17 14:30:22,079 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 167 flow. Second operand 6 states and 119 transitions. [2025-03-17 14:30:22,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 261 flow [2025-03-17 14:30:22,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:30:22,080 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 176 flow [2025-03-17 14:30:22,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2025-03-17 14:30:22,081 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 3 predicate places. [2025-03-17 14:30:22,081 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 176 flow [2025-03-17 14:30:22,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 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) [2025-03-17 14:30:22,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:22,081 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 14:30:22,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 14:30:22,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:30:22,286 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:22,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:22,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1554948369, now seen corresponding path program 1 times [2025-03-17 14:30:22,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:22,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088521383] [2025-03-17 14:30:22,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:22,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:22,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:30:22,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:30:22,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:22,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:30:22,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:22,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088521383] [2025-03-17 14:30:22,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088521383] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:30:22,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924831424] [2025-03-17 14:30:22,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:22,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:30:22,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:30:22,524 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) [2025-03-17 14:30:22,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 14:30:22,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:30:22,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:30:22,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:22,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:22,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-17 14:30:22,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:30:22,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-03-17 14:30:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:30:22,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:30:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:30:22,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924831424] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:30:22,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:30:22,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-03-17 14:30:22,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301907097] [2025-03-17 14:30:22,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:30:22,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 14:30:22,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:22,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 14:30:22,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-03-17 14:30:22,950 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:30:22,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 176 flow. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 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) [2025-03-17 14:30:22,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:22,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:30:22,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:23,565 INFO L124 PetriNetUnfolderBase]: 3954/5924 cut-off events. [2025-03-17 14:30:23,565 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2025-03-17 14:30:23,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11474 conditions, 5924 events. 3954/5924 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 32794 event pairs, 3528 based on Foata normal form. 0/3864 useless extension candidates. Maximal degree in co-relation 11441. Up to 5391 conditions per place. [2025-03-17 14:30:23,584 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 36 selfloop transitions, 12 changer transitions 0/54 dead transitions. [2025-03-17 14:30:23,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 54 transitions, 268 flow [2025-03-17 14:30:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:30:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:30:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2025-03-17 14:30:23,587 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2025-03-17 14:30:23,587 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 176 flow. Second operand 7 states and 133 transitions. [2025-03-17 14:30:23,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 54 transitions, 268 flow [2025-03-17 14:30:23,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 234 flow, removed 3 selfloop flow, removed 8 redundant places. [2025-03-17 14:30:23,589 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 162 flow [2025-03-17 14:30:23,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2025-03-17 14:30:23,589 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2025-03-17 14:30:23,589 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 162 flow [2025-03-17 14:30:23,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 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) [2025-03-17 14:30:23,590 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:23,590 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:23,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 14:30:23,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:30:23,790 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:23,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:23,791 INFO L85 PathProgramCache]: Analyzing trace with hash -955530184, now seen corresponding path program 1 times [2025-03-17 14:30:23,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:23,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412755251] [2025-03-17 14:30:23,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:23,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:23,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 14:30:23,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 14:30:23,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:23,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:30:23,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:23,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412755251] [2025-03-17 14:30:23,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412755251] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:23,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:23,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:30:23,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281193045] [2025-03-17 14:30:23,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:23,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:30:23,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:23,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:30:23,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:30:23,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 60 [2025-03-17 14:30:23,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-03-17 14:30:23,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:23,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 60 [2025-03-17 14:30:23,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:24,187 INFO L124 PetriNetUnfolderBase]: 4114/6204 cut-off events. [2025-03-17 14:30:24,188 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2025-03-17 14:30:24,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12024 conditions, 6204 events. 4114/6204 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 34423 event pairs, 3675 based on Foata normal form. 115/4223 useless extension candidates. Maximal degree in co-relation 11425. Up to 5400 conditions per place. [2025-03-17 14:30:24,207 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 63 selfloop transitions, 5 changer transitions 1/75 dead transitions. [2025-03-17 14:30:24,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 75 transitions, 371 flow [2025-03-17 14:30:24,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:30:24,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:30:24,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2025-03-17 14:30:24,209 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2025-03-17 14:30:24,209 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 162 flow. Second operand 5 states and 145 transitions. [2025-03-17 14:30:24,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 75 transitions, 371 flow [2025-03-17 14:30:24,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 332 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-03-17 14:30:24,213 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 182 flow [2025-03-17 14:30:24,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2025-03-17 14:30:24,214 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 1 predicate places. [2025-03-17 14:30:24,214 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 182 flow [2025-03-17 14:30:24,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-03-17 14:30:24,215 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:24,215 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:24,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 14:30:24,215 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:24,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:24,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1405672311, now seen corresponding path program 1 times [2025-03-17 14:30:24,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:24,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332314782] [2025-03-17 14:30:24,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:24,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:24,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 14:30:24,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 14:30:24,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:24,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:24,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 14:30:24,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:24,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332314782] [2025-03-17 14:30:24,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332314782] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:24,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:24,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:30:24,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684531729] [2025-03-17 14:30:24,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:24,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:30:24,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:24,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:30:24,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:30:24,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:30:24,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:30:24,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:24,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:30:24,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:24,513 INFO L124 PetriNetUnfolderBase]: 3025/4588 cut-off events. [2025-03-17 14:30:24,513 INFO L125 PetriNetUnfolderBase]: For 415/415 co-relation queries the response was YES. [2025-03-17 14:30:24,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9742 conditions, 4588 events. 3025/4588 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 23998 event pairs, 2670 based on Foata normal form. 0/3303 useless extension candidates. Maximal degree in co-relation 9168. Up to 4162 conditions per place. [2025-03-17 14:30:24,526 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 41 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2025-03-17 14:30:24,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 264 flow [2025-03-17 14:30:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:30:24,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:30:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2025-03-17 14:30:24,529 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34 [2025-03-17 14:30:24,529 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 182 flow. Second operand 5 states and 102 transitions. [2025-03-17 14:30:24,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 264 flow [2025-03-17 14:30:24,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 259 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:30:24,531 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 177 flow [2025-03-17 14:30:24,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2025-03-17 14:30:24,532 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2025-03-17 14:30:24,533 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 177 flow [2025-03-17 14:30:24,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:30:24,534 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:24,534 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:24,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 14:30:24,534 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:24,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:24,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1405672310, now seen corresponding path program 1 times [2025-03-17 14:30:24,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:24,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165720119] [2025-03-17 14:30:24,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:24,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:24,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 14:30:24,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 14:30:24,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:24,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:30:24,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:24,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165720119] [2025-03-17 14:30:24,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165720119] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:30:24,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467109713] [2025-03-17 14:30:24,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:24,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:30:24,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:30:24,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:30:24,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 14:30:24,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 14:30:24,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 14:30:24,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:24,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:24,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-17 14:30:24,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:30:24,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 14:30:24,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:30:24,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-03-17 14:30:24,795 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 14:30:24,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2025-03-17 14:30:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:30:24,817 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:30:24,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467109713] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:24,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 14:30:24,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2025-03-17 14:30:24,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429771100] [2025-03-17 14:30:24,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:24,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:30:24,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:24,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:30:24,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 14:30:24,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:30:24,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2025-03-17 14:30:24,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:24,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:30:24,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:24,989 INFO L124 PetriNetUnfolderBase]: 2092/3200 cut-off events. [2025-03-17 14:30:24,989 INFO L125 PetriNetUnfolderBase]: For 375/375 co-relation queries the response was YES. [2025-03-17 14:30:24,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3200 events. 2092/3200 cut-off events. For 375/375 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15469 event pairs, 1813 based on Foata normal form. 0/2579 useless extension candidates. Maximal degree in co-relation 5966. Up to 2904 conditions per place. [2025-03-17 14:30:25,001 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 41 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2025-03-17 14:30:25,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 50 transitions, 253 flow [2025-03-17 14:30:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:30:25,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:30:25,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-03-17 14:30:25,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3625 [2025-03-17 14:30:25,002 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 177 flow. Second operand 4 states and 87 transitions. [2025-03-17 14:30:25,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 50 transitions, 253 flow [2025-03-17 14:30:25,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 50 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:30:25,005 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 162 flow [2025-03-17 14:30:25,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2025-03-17 14:30:25,007 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2025-03-17 14:30:25,007 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 162 flow [2025-03-17 14:30:25,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2025-03-17 14:30:25,008 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:25,008 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:25,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 14:30:25,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:30:25,208 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:25,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash -242297358, now seen corresponding path program 1 times [2025-03-17 14:30:25,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:25,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909537777] [2025-03-17 14:30:25,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:25,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:25,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 14:30:25,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 14:30:25,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:25,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:30:25,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:25,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909537777] [2025-03-17 14:30:25,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909537777] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:25,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:25,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:30:25,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107557420] [2025-03-17 14:30:25,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:25,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:30:25,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:25,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:30:25,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:30:25,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 60 [2025-03-17 14:30:25,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:30:25,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:25,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 60 [2025-03-17 14:30:25,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:25,381 INFO L124 PetriNetUnfolderBase]: 1934/2976 cut-off events. [2025-03-17 14:30:25,381 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2025-03-17 14:30:25,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6234 conditions, 2976 events. 1934/2976 cut-off events. For 416/416 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14223 event pairs, 695 based on Foata normal form. 77/2494 useless extension candidates. Maximal degree in co-relation 5992. Up to 2082 conditions per place. [2025-03-17 14:30:25,393 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 54 selfloop transitions, 2 changer transitions 3/65 dead transitions. [2025-03-17 14:30:25,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 318 flow [2025-03-17 14:30:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:30:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:30:25,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-03-17 14:30:25,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-03-17 14:30:25,395 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 162 flow. Second operand 3 states and 96 transitions. [2025-03-17 14:30:25,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 318 flow [2025-03-17 14:30:25,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:30:25,396 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 152 flow [2025-03-17 14:30:25,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2025-03-17 14:30:25,397 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2025-03-17 14:30:25,397 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 152 flow [2025-03-17 14:30:25,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:30:25,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:25,398 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:25,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 14:30:25,398 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:25,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:25,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2028632106, now seen corresponding path program 1 times [2025-03-17 14:30:25,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:25,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388599153] [2025-03-17 14:30:25,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:25,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:25,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 14:30:25,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 14:30:25,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:25,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 14:30:25,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:25,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388599153] [2025-03-17 14:30:25,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388599153] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:25,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:25,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:30:25,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550723178] [2025-03-17 14:30:25,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:25,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:30:25,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:25,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:30:25,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:30:25,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 60 [2025-03-17 14:30:25,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2025-03-17 14:30:25,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:25,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 60 [2025-03-17 14:30:25,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:25,565 INFO L124 PetriNetUnfolderBase]: 1663/2557 cut-off events. [2025-03-17 14:30:25,565 INFO L125 PetriNetUnfolderBase]: For 502/502 co-relation queries the response was YES. [2025-03-17 14:30:25,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5755 conditions, 2557 events. 1663/2557 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11715 event pairs, 717 based on Foata normal form. 18/2223 useless extension candidates. Maximal degree in co-relation 5729. Up to 2249 conditions per place. [2025-03-17 14:30:25,575 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 49 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2025-03-17 14:30:25,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 282 flow [2025-03-17 14:30:25,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:30:25,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:30:25,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2025-03-17 14:30:25,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49444444444444446 [2025-03-17 14:30:25,576 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 152 flow. Second operand 3 states and 89 transitions. [2025-03-17 14:30:25,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 282 flow [2025-03-17 14:30:25,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 276 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-17 14:30:25,577 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 169 flow [2025-03-17 14:30:25,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2025-03-17 14:30:25,578 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2025-03-17 14:30:25,578 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 169 flow [2025-03-17 14:30:25,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2025-03-17 14:30:25,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:25,579 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:25,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 14:30:25,579 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:25,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:25,579 INFO L85 PathProgramCache]: Analyzing trace with hash -822803216, now seen corresponding path program 1 times [2025-03-17 14:30:25,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:25,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426474334] [2025-03-17 14:30:25,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:25,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:25,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 14:30:25,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 14:30:25,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:25,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:25,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 14:30:25,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:25,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426474334] [2025-03-17 14:30:25,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426474334] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:25,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:25,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:30:25,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327134818] [2025-03-17 14:30:25,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:25,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:30:25,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:25,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:30:25,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:30:25,654 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:30:25,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-17 14:30:25,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:25,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:30:25,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:25,761 INFO L124 PetriNetUnfolderBase]: 1255/1955 cut-off events. [2025-03-17 14:30:25,761 INFO L125 PetriNetUnfolderBase]: For 1004/1004 co-relation queries the response was YES. [2025-03-17 14:30:25,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4719 conditions, 1955 events. 1255/1955 cut-off events. For 1004/1004 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8550 event pairs, 929 based on Foata normal form. 0/1810 useless extension candidates. Maximal degree in co-relation 4692. Up to 1767 conditions per place. [2025-03-17 14:30:25,767 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 39 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2025-03-17 14:30:25,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 247 flow [2025-03-17 14:30:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:30:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:30:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2025-03-17 14:30:25,768 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35 [2025-03-17 14:30:25,768 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 169 flow. Second operand 4 states and 84 transitions. [2025-03-17 14:30:25,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 247 flow [2025-03-17 14:30:25,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 48 transitions, 234 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-03-17 14:30:25,770 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 156 flow [2025-03-17 14:30:25,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2025-03-17 14:30:25,770 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2025-03-17 14:30:25,770 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 156 flow [2025-03-17 14:30:25,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-17 14:30:25,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:25,771 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:25,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 14:30:25,771 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:25,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:25,771 INFO L85 PathProgramCache]: Analyzing trace with hash -586426263, now seen corresponding path program 1 times [2025-03-17 14:30:25,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:25,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703115952] [2025-03-17 14:30:25,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:25,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:25,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 14:30:25,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 14:30:25,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:25,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 14:30:25,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:25,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703115952] [2025-03-17 14:30:25,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703115952] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:25,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:25,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:30:25,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095531788] [2025-03-17 14:30:25,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:25,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:30:25,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:25,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:30:25,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:30:25,838 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 60 [2025-03-17 14:30:25,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-17 14:30:25,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:25,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 60 [2025-03-17 14:30:25,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:25,980 INFO L124 PetriNetUnfolderBase]: 1496/2352 cut-off events. [2025-03-17 14:30:25,981 INFO L125 PetriNetUnfolderBase]: For 490/490 co-relation queries the response was YES. [2025-03-17 14:30:25,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5282 conditions, 2352 events. 1496/2352 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 10462 event pairs, 1131 based on Foata normal form. 64/2273 useless extension candidates. Maximal degree in co-relation 5255. Up to 1775 conditions per place. [2025-03-17 14:30:25,988 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 39 selfloop transitions, 2 changer transitions 19/66 dead transitions. [2025-03-17 14:30:25,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 326 flow [2025-03-17 14:30:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:30:25,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:30:25,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-03-17 14:30:25,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4625 [2025-03-17 14:30:25,989 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 156 flow. Second operand 4 states and 111 transitions. [2025-03-17 14:30:25,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 326 flow [2025-03-17 14:30:25,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:30:25,990 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 154 flow [2025-03-17 14:30:25,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2025-03-17 14:30:25,991 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2025-03-17 14:30:25,991 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 154 flow [2025-03-17 14:30:25,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-17 14:30:25,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:25,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:25,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 14:30:25,992 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:25,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:25,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1118917579, now seen corresponding path program 1 times [2025-03-17 14:30:25,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:25,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748240596] [2025-03-17 14:30:25,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:25,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:25,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:30:26,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:30:26,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:26,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 14:30:26,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:26,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748240596] [2025-03-17 14:30:26,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748240596] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:30:26,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60918198] [2025-03-17 14:30:26,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:26,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:30:26,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:30:26,150 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:30:26,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 14:30:26,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:30:26,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:30:26,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:26,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:26,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 14:30:26,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:30:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 14:30:26,283 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:30:26,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60918198] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:26,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 14:30:26,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-17 14:30:26,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388356109] [2025-03-17 14:30:26,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:26,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:30:26,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:26,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:30:26,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 14:30:26,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 60 [2025-03-17 14:30:26,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2025-03-17 14:30:26,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:26,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 60 [2025-03-17 14:30:26,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:26,393 INFO L124 PetriNetUnfolderBase]: 900/1436 cut-off events. [2025-03-17 14:30:26,393 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2025-03-17 14:30:26,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 1436 events. 900/1436 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6044 event pairs, 653 based on Foata normal form. 97/1457 useless extension candidates. Maximal degree in co-relation 3197. Up to 1270 conditions per place. [2025-03-17 14:30:26,398 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 37 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2025-03-17 14:30:26,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 45 transitions, 224 flow [2025-03-17 14:30:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:30:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:30:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2025-03-17 14:30:26,399 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-03-17 14:30:26,399 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 154 flow. Second operand 4 states and 90 transitions. [2025-03-17 14:30:26,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 45 transitions, 224 flow [2025-03-17 14:30:26,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 220 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-17 14:30:26,400 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 146 flow [2025-03-17 14:30:26,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2025-03-17 14:30:26,401 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2025-03-17 14:30:26,401 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 146 flow [2025-03-17 14:30:26,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2025-03-17 14:30:26,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:26,401 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:26,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 14:30:26,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:30:26,602 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:26,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:26,602 INFO L85 PathProgramCache]: Analyzing trace with hash 782879812, now seen corresponding path program 1 times [2025-03-17 14:30:26,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:26,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709290637] [2025-03-17 14:30:26,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:30:26,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:26,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 14:30:26,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:26,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:26,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:27,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:27,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709290637] [2025-03-17 14:30:27,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709290637] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:27,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:27,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:27,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017671097] [2025-03-17 14:30:27,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:27,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:27,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:27,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:27,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:27,238 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:27,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 146 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:27,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:27,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:27,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:27,695 INFO L124 PetriNetUnfolderBase]: 1302/2119 cut-off events. [2025-03-17 14:30:27,695 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2025-03-17 14:30:27,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4695 conditions, 2119 events. 1302/2119 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 10351 event pairs, 135 based on Foata normal form. 1/2068 useless extension candidates. Maximal degree in co-relation 4667. Up to 1406 conditions per place. [2025-03-17 14:30:27,702 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 103 selfloop transitions, 25 changer transitions 3/136 dead transitions. [2025-03-17 14:30:27,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 136 transitions, 655 flow [2025-03-17 14:30:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 14:30:27,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 14:30:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 283 transitions. [2025-03-17 14:30:27,703 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39305555555555555 [2025-03-17 14:30:27,703 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 146 flow. Second operand 12 states and 283 transitions. [2025-03-17 14:30:27,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 136 transitions, 655 flow [2025-03-17 14:30:27,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 136 transitions, 652 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:30:27,705 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 279 flow [2025-03-17 14:30:27,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=279, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2025-03-17 14:30:27,705 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 10 predicate places. [2025-03-17 14:30:27,706 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 279 flow [2025-03-17 14:30:27,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:27,706 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:27,706 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:27,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 14:30:27,706 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:27,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:27,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1457822364, now seen corresponding path program 2 times [2025-03-17 14:30:27,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:27,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970773346] [2025-03-17 14:30:27,707 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:30:27,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:27,714 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:30:27,741 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:27,741 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:30:27,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:28,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:28,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970773346] [2025-03-17 14:30:28,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970773346] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:28,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:28,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:28,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874729260] [2025-03-17 14:30:28,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:28,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:28,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:28,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:28,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:28,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:28,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 279 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:28,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:28,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:28,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:28,753 INFO L124 PetriNetUnfolderBase]: 1493/2425 cut-off events. [2025-03-17 14:30:28,756 INFO L125 PetriNetUnfolderBase]: For 1536/1536 co-relation queries the response was YES. [2025-03-17 14:30:28,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6622 conditions, 2425 events. 1493/2425 cut-off events. For 1536/1536 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 12056 event pairs, 367 based on Foata normal form. 1/2369 useless extension candidates. Maximal degree in co-relation 6589. Up to 1744 conditions per place. [2025-03-17 14:30:28,766 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 108 selfloop transitions, 35 changer transitions 3/151 dead transitions. [2025-03-17 14:30:28,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 151 transitions, 884 flow [2025-03-17 14:30:28,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 267 transitions. [2025-03-17 14:30:28,768 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40454545454545454 [2025-03-17 14:30:28,768 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 279 flow. Second operand 11 states and 267 transitions. [2025-03-17 14:30:28,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 151 transitions, 884 flow [2025-03-17 14:30:28,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 151 transitions, 879 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:30:28,773 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 522 flow [2025-03-17 14:30:28,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=522, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2025-03-17 14:30:28,773 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 26 predicate places. [2025-03-17 14:30:28,773 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 522 flow [2025-03-17 14:30:28,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:28,774 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:28,774 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:28,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 14:30:28,774 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:28,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1561843278, now seen corresponding path program 3 times [2025-03-17 14:30:28,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:28,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622325452] [2025-03-17 14:30:28,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:30:28,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:28,784 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:30:28,805 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 33 statements. [2025-03-17 14:30:28,805 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 14:30:28,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:29,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:29,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622325452] [2025-03-17 14:30:29,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622325452] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:29,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:29,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:29,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798541799] [2025-03-17 14:30:29,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:29,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:29,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:29,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:29,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:29,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:29,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 522 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:29,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:29,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:29,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:29,810 INFO L124 PetriNetUnfolderBase]: 1660/2738 cut-off events. [2025-03-17 14:30:29,810 INFO L125 PetriNetUnfolderBase]: For 3647/3647 co-relation queries the response was YES. [2025-03-17 14:30:29,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8516 conditions, 2738 events. 1660/2738 cut-off events. For 3647/3647 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14435 event pairs, 302 based on Foata normal form. 1/2661 useless extension candidates. Maximal degree in co-relation 8474. Up to 1784 conditions per place. [2025-03-17 14:30:29,823 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 119 selfloop transitions, 43 changer transitions 3/170 dead transitions. [2025-03-17 14:30:29,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 170 transitions, 1163 flow [2025-03-17 14:30:29,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 14:30:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 14:30:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 287 transitions. [2025-03-17 14:30:29,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39861111111111114 [2025-03-17 14:30:29,825 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 522 flow. Second operand 12 states and 287 transitions. [2025-03-17 14:30:29,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 170 transitions, 1163 flow [2025-03-17 14:30:29,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 170 transitions, 1147 flow, removed 8 selfloop flow, removed 0 redundant places. [2025-03-17 14:30:29,839 INFO L231 Difference]: Finished difference. Result has 99 places, 99 transitions, 680 flow [2025-03-17 14:30:29,839 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=680, PETRI_PLACES=99, PETRI_TRANSITIONS=99} [2025-03-17 14:30:29,840 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 40 predicate places. [2025-03-17 14:30:29,840 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 99 transitions, 680 flow [2025-03-17 14:30:29,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:29,840 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:29,841 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:29,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 14:30:29,841 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:29,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:29,843 INFO L85 PathProgramCache]: Analyzing trace with hash -625841112, now seen corresponding path program 4 times [2025-03-17 14:30:29,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:29,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755583215] [2025-03-17 14:30:29,843 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:30:29,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:29,850 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:30:29,875 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:29,876 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:30:29,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:30,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:30,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755583215] [2025-03-17 14:30:30,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755583215] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:30,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:30,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:30,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953865978] [2025-03-17 14:30:30,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:30,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:30,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:30,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:30,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:30,352 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:30:30,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 680 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:30:30,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:30,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:30:30,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:30,856 INFO L124 PetriNetUnfolderBase]: 1962/3213 cut-off events. [2025-03-17 14:30:30,856 INFO L125 PetriNetUnfolderBase]: For 6237/6237 co-relation queries the response was YES. [2025-03-17 14:30:30,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10631 conditions, 3213 events. 1962/3213 cut-off events. For 6237/6237 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 17413 event pairs, 492 based on Foata normal form. 1/3125 useless extension candidates. Maximal degree in co-relation 10584. Up to 2363 conditions per place. [2025-03-17 14:30:30,871 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 128 selfloop transitions, 39 changer transitions 3/174 dead transitions. [2025-03-17 14:30:30,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 174 transitions, 1329 flow [2025-03-17 14:30:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 14:30:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 14:30:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 273 transitions. [2025-03-17 14:30:30,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665 [2025-03-17 14:30:30,873 INFO L175 Difference]: Start difference. First operand has 99 places, 99 transitions, 680 flow. Second operand 12 states and 273 transitions. [2025-03-17 14:30:30,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 174 transitions, 1329 flow [2025-03-17 14:30:30,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 174 transitions, 1251 flow, removed 18 selfloop flow, removed 6 redundant places. [2025-03-17 14:30:30,886 INFO L231 Difference]: Finished difference. Result has 107 places, 105 transitions, 755 flow [2025-03-17 14:30:30,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=755, PETRI_PLACES=107, PETRI_TRANSITIONS=105} [2025-03-17 14:30:30,887 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 48 predicate places. [2025-03-17 14:30:30,887 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 105 transitions, 755 flow [2025-03-17 14:30:30,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:30:30,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:30,887 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:30,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 14:30:30,888 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:30,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1811766034, now seen corresponding path program 5 times [2025-03-17 14:30:30,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:30,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983839104] [2025-03-17 14:30:30,888 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:30:30,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:30,895 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:30:30,911 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:30,912 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 14:30:30,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:31,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:31,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983839104] [2025-03-17 14:30:31,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983839104] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:31,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:31,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:31,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840954159] [2025-03-17 14:30:31,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:31,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:31,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:31,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:31,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:31,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:31,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 105 transitions, 755 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:31,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:31,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:31,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:31,821 INFO L124 PetriNetUnfolderBase]: 1764/2939 cut-off events. [2025-03-17 14:30:31,822 INFO L125 PetriNetUnfolderBase]: For 7356/7356 co-relation queries the response was YES. [2025-03-17 14:30:31,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10201 conditions, 2939 events. 1764/2939 cut-off events. For 7356/7356 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 16008 event pairs, 420 based on Foata normal form. 1/2857 useless extension candidates. Maximal degree in co-relation 10150. Up to 2205 conditions per place. [2025-03-17 14:30:31,831 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 122 selfloop transitions, 38 changer transitions 3/168 dead transitions. [2025-03-17 14:30:31,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 168 transitions, 1351 flow [2025-03-17 14:30:31,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 14:30:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 14:30:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 274 transitions. [2025-03-17 14:30:31,833 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38055555555555554 [2025-03-17 14:30:31,833 INFO L175 Difference]: Start difference. First operand has 107 places, 105 transitions, 755 flow. Second operand 12 states and 274 transitions. [2025-03-17 14:30:31,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 168 transitions, 1351 flow [2025-03-17 14:30:31,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 168 transitions, 1259 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-03-17 14:30:31,843 INFO L231 Difference]: Finished difference. Result has 113 places, 108 transitions, 784 flow [2025-03-17 14:30:31,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=784, PETRI_PLACES=113, PETRI_TRANSITIONS=108} [2025-03-17 14:30:31,843 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 54 predicate places. [2025-03-17 14:30:31,843 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 108 transitions, 784 flow [2025-03-17 14:30:31,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:31,844 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:31,844 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:31,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 14:30:31,844 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:31,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:31,844 INFO L85 PathProgramCache]: Analyzing trace with hash -483826708, now seen corresponding path program 6 times [2025-03-17 14:30:31,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:31,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897718827] [2025-03-17 14:30:31,845 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:30:31,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:31,851 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:30:31,869 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:31,869 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-17 14:30:31,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:32,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:32,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:32,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897718827] [2025-03-17 14:30:32,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897718827] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:32,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:32,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:32,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995690824] [2025-03-17 14:30:32,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:32,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:32,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:32,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:32,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:32,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:32,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 108 transitions, 784 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:32,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:32,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:32,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:32,702 INFO L124 PetriNetUnfolderBase]: 1886/3161 cut-off events. [2025-03-17 14:30:32,702 INFO L125 PetriNetUnfolderBase]: For 8214/8214 co-relation queries the response was YES. [2025-03-17 14:30:32,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11036 conditions, 3161 events. 1886/3161 cut-off events. For 8214/8214 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 17602 event pairs, 611 based on Foata normal form. 1/3072 useless extension candidates. Maximal degree in co-relation 10982. Up to 2472 conditions per place. [2025-03-17 14:30:32,716 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 129 selfloop transitions, 36 changer transitions 3/173 dead transitions. [2025-03-17 14:30:32,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 173 transitions, 1475 flow [2025-03-17 14:30:32,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 258 transitions. [2025-03-17 14:30:32,718 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2025-03-17 14:30:32,718 INFO L175 Difference]: Start difference. First operand has 113 places, 108 transitions, 784 flow. Second operand 11 states and 258 transitions. [2025-03-17 14:30:32,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 173 transitions, 1475 flow [2025-03-17 14:30:32,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 173 transitions, 1387 flow, removed 7 selfloop flow, removed 9 redundant places. [2025-03-17 14:30:32,732 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 929 flow [2025-03-17 14:30:32,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=929, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2025-03-17 14:30:32,733 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 60 predicate places. [2025-03-17 14:30:32,733 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 929 flow [2025-03-17 14:30:32,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:32,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:32,733 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:32,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 14:30:32,733 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:32,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:32,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1401064102, now seen corresponding path program 7 times [2025-03-17 14:30:32,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:32,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247947714] [2025-03-17 14:30:32,734 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:30:32,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:32,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 14:30:32,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:32,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:32,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:33,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:33,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247947714] [2025-03-17 14:30:33,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247947714] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:33,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:33,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:33,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230168796] [2025-03-17 14:30:33,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:33,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:33,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:33,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:33,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:33,206 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:33,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 929 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:33,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:33,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:33,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:33,655 INFO L124 PetriNetUnfolderBase]: 2026/3401 cut-off events. [2025-03-17 14:30:33,655 INFO L125 PetriNetUnfolderBase]: For 13443/13443 co-relation queries the response was YES. [2025-03-17 14:30:33,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12614 conditions, 3401 events. 2026/3401 cut-off events. For 13443/13443 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19323 event pairs, 600 based on Foata normal form. 1/3305 useless extension candidates. Maximal degree in co-relation 12555. Up to 2677 conditions per place. [2025-03-17 14:30:33,673 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 138 selfloop transitions, 36 changer transitions 3/182 dead transitions. [2025-03-17 14:30:33,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 182 transitions, 1656 flow [2025-03-17 14:30:33,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:33,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:33,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 255 transitions. [2025-03-17 14:30:33,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2025-03-17 14:30:33,674 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 929 flow. Second operand 11 states and 255 transitions. [2025-03-17 14:30:33,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 182 transitions, 1656 flow [2025-03-17 14:30:33,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 182 transitions, 1569 flow, removed 36 selfloop flow, removed 2 redundant places. [2025-03-17 14:30:33,694 INFO L231 Difference]: Finished difference. Result has 131 places, 128 transitions, 1075 flow [2025-03-17 14:30:33,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1075, PETRI_PLACES=131, PETRI_TRANSITIONS=128} [2025-03-17 14:30:33,695 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 72 predicate places. [2025-03-17 14:30:33,695 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 128 transitions, 1075 flow [2025-03-17 14:30:33,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:33,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:33,695 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:33,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 14:30:33,695 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:33,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash 683993482, now seen corresponding path program 8 times [2025-03-17 14:30:33,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:33,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614228695] [2025-03-17 14:30:33,695 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:30:33,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:33,704 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:30:33,718 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:33,719 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:30:33,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:34,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:34,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614228695] [2025-03-17 14:30:34,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614228695] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:34,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:34,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:34,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162097755] [2025-03-17 14:30:34,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:34,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:34,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:34,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:34,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:34,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:34,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 128 transitions, 1075 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:34,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:34,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:34,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:34,614 INFO L124 PetriNetUnfolderBase]: 2208/3732 cut-off events. [2025-03-17 14:30:34,614 INFO L125 PetriNetUnfolderBase]: For 21530/21530 co-relation queries the response was YES. [2025-03-17 14:30:34,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14694 conditions, 3732 events. 2208/3732 cut-off events. For 21530/21530 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 21748 event pairs, 679 based on Foata normal form. 1/3634 useless extension candidates. Maximal degree in co-relation 14630. Up to 2884 conditions per place. [2025-03-17 14:30:34,633 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 156 selfloop transitions, 38 changer transitions 3/202 dead transitions. [2025-03-17 14:30:34,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 202 transitions, 1933 flow [2025-03-17 14:30:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 14:30:34,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 14:30:34,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2025-03-17 14:30:34,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2025-03-17 14:30:34,635 INFO L175 Difference]: Start difference. First operand has 131 places, 128 transitions, 1075 flow. Second operand 10 states and 248 transitions. [2025-03-17 14:30:34,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 202 transitions, 1933 flow [2025-03-17 14:30:34,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 202 transitions, 1805 flow, removed 47 selfloop flow, removed 5 redundant places. [2025-03-17 14:30:34,671 INFO L231 Difference]: Finished difference. Result has 138 places, 139 transitions, 1196 flow [2025-03-17 14:30:34,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1196, PETRI_PLACES=138, PETRI_TRANSITIONS=139} [2025-03-17 14:30:34,672 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 79 predicate places. [2025-03-17 14:30:34,672 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 139 transitions, 1196 flow [2025-03-17 14:30:34,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:34,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:34,672 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:34,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 14:30:34,672 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:34,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:34,672 INFO L85 PathProgramCache]: Analyzing trace with hash -441928992, now seen corresponding path program 9 times [2025-03-17 14:30:34,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:34,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336772423] [2025-03-17 14:30:34,673 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:30:34,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:34,679 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:30:34,698 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 33 statements. [2025-03-17 14:30:34,698 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 14:30:34,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:35,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:35,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336772423] [2025-03-17 14:30:35,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336772423] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:35,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:35,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:35,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430110151] [2025-03-17 14:30:35,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:35,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:35,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:35,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:35,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:35,141 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:35,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 139 transitions, 1196 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:35,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:35,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:35,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:35,710 INFO L124 PetriNetUnfolderBase]: 2395/4040 cut-off events. [2025-03-17 14:30:35,710 INFO L125 PetriNetUnfolderBase]: For 28583/28583 co-relation queries the response was YES. [2025-03-17 14:30:35,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16673 conditions, 4040 events. 2395/4040 cut-off events. For 28583/28583 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24081 event pairs, 760 based on Foata normal form. 1/3930 useless extension candidates. Maximal degree in co-relation 16605. Up to 3184 conditions per place. [2025-03-17 14:30:35,734 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 166 selfloop transitions, 39 changer transitions 3/213 dead transitions. [2025-03-17 14:30:35,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 213 transitions, 2111 flow [2025-03-17 14:30:35,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2025-03-17 14:30:35,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2025-03-17 14:30:35,735 INFO L175 Difference]: Start difference. First operand has 138 places, 139 transitions, 1196 flow. Second operand 11 states and 268 transitions. [2025-03-17 14:30:35,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 213 transitions, 2111 flow [2025-03-17 14:30:35,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 213 transitions, 1991 flow, removed 51 selfloop flow, removed 3 redundant places. [2025-03-17 14:30:35,779 INFO L231 Difference]: Finished difference. Result has 150 places, 149 transitions, 1368 flow [2025-03-17 14:30:35,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1368, PETRI_PLACES=150, PETRI_TRANSITIONS=149} [2025-03-17 14:30:35,779 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 91 predicate places. [2025-03-17 14:30:35,779 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 149 transitions, 1368 flow [2025-03-17 14:30:35,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:35,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:35,780 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:35,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-17 14:30:35,780 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:35,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:35,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1090676652, now seen corresponding path program 10 times [2025-03-17 14:30:35,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:35,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156825481] [2025-03-17 14:30:35,780 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:30:35,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:35,785 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:30:35,804 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:35,804 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:30:35,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:36,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:36,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156825481] [2025-03-17 14:30:36,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156825481] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:36,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:36,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:36,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549374150] [2025-03-17 14:30:36,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:36,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:36,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:36,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:36,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:36,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:30:36,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 149 transitions, 1368 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:30:36,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:36,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:30:36,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:36,651 INFO L124 PetriNetUnfolderBase]: 2654/4420 cut-off events. [2025-03-17 14:30:36,651 INFO L125 PetriNetUnfolderBase]: For 35733/35733 co-relation queries the response was YES. [2025-03-17 14:30:36,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18605 conditions, 4420 events. 2654/4420 cut-off events. For 35733/35733 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 26416 event pairs, 956 based on Foata normal form. 1/4306 useless extension candidates. Maximal degree in co-relation 18531. Up to 3696 conditions per place. [2025-03-17 14:30:36,673 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 158 selfloop transitions, 36 changer transitions 4/202 dead transitions. [2025-03-17 14:30:36,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 202 transitions, 2064 flow [2025-03-17 14:30:36,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 238 transitions. [2025-03-17 14:30:36,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2025-03-17 14:30:36,674 INFO L175 Difference]: Start difference. First operand has 150 places, 149 transitions, 1368 flow. Second operand 11 states and 238 transitions. [2025-03-17 14:30:36,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 202 transitions, 2064 flow [2025-03-17 14:30:36,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 202 transitions, 1928 flow, removed 52 selfloop flow, removed 4 redundant places. [2025-03-17 14:30:36,726 INFO L231 Difference]: Finished difference. Result has 159 places, 155 transitions, 1401 flow [2025-03-17 14:30:36,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1401, PETRI_PLACES=159, PETRI_TRANSITIONS=155} [2025-03-17 14:30:36,727 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 100 predicate places. [2025-03-17 14:30:36,727 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 155 transitions, 1401 flow [2025-03-17 14:30:36,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:30:36,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:36,727 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:36,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-17 14:30:36,727 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:36,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:36,728 INFO L85 PathProgramCache]: Analyzing trace with hash 833233002, now seen corresponding path program 11 times [2025-03-17 14:30:36,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:36,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537387645] [2025-03-17 14:30:36,728 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:30:36,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:36,733 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:30:36,750 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:36,750 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 14:30:36,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:37,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:37,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537387645] [2025-03-17 14:30:37,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537387645] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:37,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:37,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:37,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986519924] [2025-03-17 14:30:37,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:37,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:37,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:37,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:37,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:37,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:37,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 155 transitions, 1401 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:37,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:37,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:37,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:37,734 INFO L124 PetriNetUnfolderBase]: 2607/4392 cut-off events. [2025-03-17 14:30:37,734 INFO L125 PetriNetUnfolderBase]: For 35049/35049 co-relation queries the response was YES. [2025-03-17 14:30:37,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18584 conditions, 4392 events. 2607/4392 cut-off events. For 35049/35049 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 26867 event pairs, 890 based on Foata normal form. 1/4288 useless extension candidates. Maximal degree in co-relation 18505. Up to 3478 conditions per place. [2025-03-17 14:30:37,763 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 167 selfloop transitions, 42 changer transitions 3/217 dead transitions. [2025-03-17 14:30:37,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 217 transitions, 2273 flow [2025-03-17 14:30:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:37,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 258 transitions. [2025-03-17 14:30:37,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2025-03-17 14:30:37,764 INFO L175 Difference]: Start difference. First operand has 159 places, 155 transitions, 1401 flow. Second operand 11 states and 258 transitions. [2025-03-17 14:30:37,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 217 transitions, 2273 flow [2025-03-17 14:30:37,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 217 transitions, 2163 flow, removed 35 selfloop flow, removed 6 redundant places. [2025-03-17 14:30:37,816 INFO L231 Difference]: Finished difference. Result has 166 places, 162 transitions, 1566 flow [2025-03-17 14:30:37,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1566, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2025-03-17 14:30:37,816 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 107 predicate places. [2025-03-17 14:30:37,816 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 1566 flow [2025-03-17 14:30:37,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:37,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:37,816 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:37,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-17 14:30:37,817 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:37,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash -995141562, now seen corresponding path program 12 times [2025-03-17 14:30:37,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:37,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171470304] [2025-03-17 14:30:37,817 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:30:37,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:37,823 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:30:37,848 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:37,849 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-17 14:30:37,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:38,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171470304] [2025-03-17 14:30:38,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171470304] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:38,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:38,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:38,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910663712] [2025-03-17 14:30:38,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:38,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:38,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:38,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:38,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:38,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:38,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 1566 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:38,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:38,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:38,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:38,725 INFO L124 PetriNetUnfolderBase]: 2607/4390 cut-off events. [2025-03-17 14:30:38,726 INFO L125 PetriNetUnfolderBase]: For 41438/41438 co-relation queries the response was YES. [2025-03-17 14:30:38,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19211 conditions, 4390 events. 2607/4390 cut-off events. For 41438/41438 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 26764 event pairs, 900 based on Foata normal form. 1/4286 useless extension candidates. Maximal degree in co-relation 19128. Up to 3516 conditions per place. [2025-03-17 14:30:38,754 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 175 selfloop transitions, 41 changer transitions 5/226 dead transitions. [2025-03-17 14:30:38,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 226 transitions, 2358 flow [2025-03-17 14:30:38,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:38,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:38,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2025-03-17 14:30:38,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2025-03-17 14:30:38,755 INFO L175 Difference]: Start difference. First operand has 166 places, 162 transitions, 1566 flow. Second operand 11 states and 266 transitions. [2025-03-17 14:30:38,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 226 transitions, 2358 flow [2025-03-17 14:30:38,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 226 transitions, 2190 flow, removed 64 selfloop flow, removed 6 redundant places. [2025-03-17 14:30:38,821 INFO L231 Difference]: Finished difference. Result has 172 places, 166 transitions, 1531 flow [2025-03-17 14:30:38,822 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1531, PETRI_PLACES=172, PETRI_TRANSITIONS=166} [2025-03-17 14:30:38,822 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 113 predicate places. [2025-03-17 14:30:38,822 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 166 transitions, 1531 flow [2025-03-17 14:30:38,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:38,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:38,822 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:38,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-17 14:30:38,822 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:38,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:38,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1178571982, now seen corresponding path program 13 times [2025-03-17 14:30:38,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:38,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907037290] [2025-03-17 14:30:38,823 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:30:38,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:38,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 14:30:38,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:38,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:38,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:39,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:39,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907037290] [2025-03-17 14:30:39,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907037290] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:39,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:39,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:39,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660321728] [2025-03-17 14:30:39,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:39,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:39,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:39,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:39,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:39,200 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:39,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 166 transitions, 1531 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:39,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:39,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:39,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:39,720 INFO L124 PetriNetUnfolderBase]: 2643/4457 cut-off events. [2025-03-17 14:30:39,721 INFO L125 PetriNetUnfolderBase]: For 36599/36599 co-relation queries the response was YES. [2025-03-17 14:30:39,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18888 conditions, 4457 events. 2643/4457 cut-off events. For 36599/36599 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 27387 event pairs, 988 based on Foata normal form. 1/4354 useless extension candidates. Maximal degree in co-relation 18802. Up to 3767 conditions per place. [2025-03-17 14:30:39,748 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 170 selfloop transitions, 37 changer transitions 3/215 dead transitions. [2025-03-17 14:30:39,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 215 transitions, 2217 flow [2025-03-17 14:30:39,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 247 transitions. [2025-03-17 14:30:39,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37424242424242427 [2025-03-17 14:30:39,749 INFO L175 Difference]: Start difference. First operand has 172 places, 166 transitions, 1531 flow. Second operand 11 states and 247 transitions. [2025-03-17 14:30:39,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 215 transitions, 2217 flow [2025-03-17 14:30:39,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 215 transitions, 2110 flow, removed 18 selfloop flow, removed 7 redundant places. [2025-03-17 14:30:39,813 INFO L231 Difference]: Finished difference. Result has 177 places, 169 transitions, 1548 flow [2025-03-17 14:30:39,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1548, PETRI_PLACES=177, PETRI_TRANSITIONS=169} [2025-03-17 14:30:39,813 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 118 predicate places. [2025-03-17 14:30:39,813 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 169 transitions, 1548 flow [2025-03-17 14:30:39,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:39,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:39,814 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:39,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-17 14:30:39,814 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:39,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1291909014, now seen corresponding path program 14 times [2025-03-17 14:30:39,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:39,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907020422] [2025-03-17 14:30:39,814 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:30:39,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:39,819 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:30:39,833 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:39,833 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:30:39,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:40,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:40,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:40,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907020422] [2025-03-17 14:30:40,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907020422] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:40,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:40,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:40,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866062587] [2025-03-17 14:30:40,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:40,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:40,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:40,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:40,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:40,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:40,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 169 transitions, 1548 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:40,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:40,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:40,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:40,755 INFO L124 PetriNetUnfolderBase]: 2664/4503 cut-off events. [2025-03-17 14:30:40,755 INFO L125 PetriNetUnfolderBase]: For 36740/36740 co-relation queries the response was YES. [2025-03-17 14:30:40,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18976 conditions, 4503 events. 2664/4503 cut-off events. For 36740/36740 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 27872 event pairs, 915 based on Foata normal form. 1/4393 useless extension candidates. Maximal degree in co-relation 18887. Up to 3549 conditions per place. [2025-03-17 14:30:40,786 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 177 selfloop transitions, 46 changer transitions 5/233 dead transitions. [2025-03-17 14:30:40,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 233 transitions, 2352 flow [2025-03-17 14:30:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 265 transitions. [2025-03-17 14:30:40,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2025-03-17 14:30:40,787 INFO L175 Difference]: Start difference. First operand has 177 places, 169 transitions, 1548 flow. Second operand 11 states and 265 transitions. [2025-03-17 14:30:40,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 233 transitions, 2352 flow [2025-03-17 14:30:40,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 233 transitions, 2248 flow, removed 17 selfloop flow, removed 8 redundant places. [2025-03-17 14:30:40,853 INFO L231 Difference]: Finished difference. Result has 182 places, 175 transitions, 1645 flow [2025-03-17 14:30:40,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1645, PETRI_PLACES=182, PETRI_TRANSITIONS=175} [2025-03-17 14:30:40,854 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 123 predicate places. [2025-03-17 14:30:40,854 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 175 transitions, 1645 flow [2025-03-17 14:30:40,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:40,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:40,854 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:40,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-17 14:30:40,854 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:40,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:40,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2052098386, now seen corresponding path program 15 times [2025-03-17 14:30:40,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:40,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774411125] [2025-03-17 14:30:40,854 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:30:40,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:40,859 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:30:40,869 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 33 statements. [2025-03-17 14:30:40,869 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 14:30:40,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:41,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:41,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774411125] [2025-03-17 14:30:41,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774411125] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:41,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:41,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:41,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112532764] [2025-03-17 14:30:41,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:41,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:41,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:41,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:41,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:41,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:41,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 175 transitions, 1645 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:41,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:41,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:41,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:41,626 INFO L124 PetriNetUnfolderBase]: 2664/4497 cut-off events. [2025-03-17 14:30:41,627 INFO L125 PetriNetUnfolderBase]: For 38590/38590 co-relation queries the response was YES. [2025-03-17 14:30:41,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19255 conditions, 4497 events. 2664/4497 cut-off events. For 38590/38590 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 27743 event pairs, 1009 based on Foata normal form. 1/4389 useless extension candidates. Maximal degree in co-relation 19163. Up to 3813 conditions per place. [2025-03-17 14:30:41,657 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 178 selfloop transitions, 35 changer transitions 3/221 dead transitions. [2025-03-17 14:30:41,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 221 transitions, 2315 flow [2025-03-17 14:30:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 244 transitions. [2025-03-17 14:30:41,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2025-03-17 14:30:41,658 INFO L175 Difference]: Start difference. First operand has 182 places, 175 transitions, 1645 flow. Second operand 11 states and 244 transitions. [2025-03-17 14:30:41,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 221 transitions, 2315 flow [2025-03-17 14:30:41,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 221 transitions, 2188 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-03-17 14:30:41,737 INFO L231 Difference]: Finished difference. Result has 187 places, 177 transitions, 1612 flow [2025-03-17 14:30:41,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1612, PETRI_PLACES=187, PETRI_TRANSITIONS=177} [2025-03-17 14:30:41,738 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 128 predicate places. [2025-03-17 14:30:41,738 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 177 transitions, 1612 flow [2025-03-17 14:30:41,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:41,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:41,738 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:41,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-17 14:30:41,738 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:41,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash 790033540, now seen corresponding path program 16 times [2025-03-17 14:30:41,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:41,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439204689] [2025-03-17 14:30:41,739 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:30:41,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:41,746 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:30:41,757 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:41,757 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:30:41,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:42,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:42,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439204689] [2025-03-17 14:30:42,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439204689] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:42,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:42,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:42,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190312034] [2025-03-17 14:30:42,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:42,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:42,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:42,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:42,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:42,131 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:30:42,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 177 transitions, 1612 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:30:42,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:42,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:30:42,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:42,764 INFO L124 PetriNetUnfolderBase]: 3101/5178 cut-off events. [2025-03-17 14:30:42,764 INFO L125 PetriNetUnfolderBase]: For 52020/52020 co-relation queries the response was YES. [2025-03-17 14:30:42,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22898 conditions, 5178 events. 3101/5178 cut-off events. For 52020/52020 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 32549 event pairs, 1129 based on Foata normal form. 1/5061 useless extension candidates. Maximal degree in co-relation 22803. Up to 4090 conditions per place. [2025-03-17 14:30:42,851 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 207 selfloop transitions, 44 changer transitions 3/258 dead transitions. [2025-03-17 14:30:42,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 258 transitions, 2777 flow [2025-03-17 14:30:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 14:30:42,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 14:30:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 275 transitions. [2025-03-17 14:30:42,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2025-03-17 14:30:42,852 INFO L175 Difference]: Start difference. First operand has 187 places, 177 transitions, 1612 flow. Second operand 12 states and 275 transitions. [2025-03-17 14:30:42,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 258 transitions, 2777 flow [2025-03-17 14:30:42,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 258 transitions, 2709 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-03-17 14:30:43,000 INFO L231 Difference]: Finished difference. Result has 194 places, 189 transitions, 1913 flow [2025-03-17 14:30:43,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1913, PETRI_PLACES=194, PETRI_TRANSITIONS=189} [2025-03-17 14:30:43,001 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 135 predicate places. [2025-03-17 14:30:43,001 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 189 transitions, 1913 flow [2025-03-17 14:30:43,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:30:43,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:43,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:43,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-17 14:30:43,001 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:43,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:43,002 INFO L85 PathProgramCache]: Analyzing trace with hash -419065132, now seen corresponding path program 17 times [2025-03-17 14:30:43,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:43,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022278601] [2025-03-17 14:30:43,002 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:30:43,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:43,006 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:30:43,013 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:43,013 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 14:30:43,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:43,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:43,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022278601] [2025-03-17 14:30:43,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022278601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:43,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:43,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:43,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337135733] [2025-03-17 14:30:43,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:43,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:43,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:43,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:43,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:43,348 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:43,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 189 transitions, 1913 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:43,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:43,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:43,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:44,117 INFO L124 PetriNetUnfolderBase]: 3104/5247 cut-off events. [2025-03-17 14:30:44,117 INFO L125 PetriNetUnfolderBase]: For 66777/66777 co-relation queries the response was YES. [2025-03-17 14:30:44,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24818 conditions, 5247 events. 3104/5247 cut-off events. For 66777/66777 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 33842 event pairs, 1033 based on Foata normal form. 1/5133 useless extension candidates. Maximal degree in co-relation 24719. Up to 4035 conditions per place. [2025-03-17 14:30:44,154 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 203 selfloop transitions, 54 changer transitions 3/265 dead transitions. [2025-03-17 14:30:44,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 265 transitions, 3134 flow [2025-03-17 14:30:44,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 14:30:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 14:30:44,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 284 transitions. [2025-03-17 14:30:44,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2025-03-17 14:30:44,156 INFO L175 Difference]: Start difference. First operand has 194 places, 189 transitions, 1913 flow. Second operand 12 states and 284 transitions. [2025-03-17 14:30:44,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 265 transitions, 3134 flow [2025-03-17 14:30:44,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 265 transitions, 2874 flow, removed 113 selfloop flow, removed 5 redundant places. [2025-03-17 14:30:44,285 INFO L231 Difference]: Finished difference. Result has 204 places, 200 transitions, 2078 flow [2025-03-17 14:30:44,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2078, PETRI_PLACES=204, PETRI_TRANSITIONS=200} [2025-03-17 14:30:44,286 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 145 predicate places. [2025-03-17 14:30:44,286 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 200 transitions, 2078 flow [2025-03-17 14:30:44,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:44,286 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:44,286 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:44,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-17 14:30:44,286 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:44,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:44,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2117940844, now seen corresponding path program 18 times [2025-03-17 14:30:44,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:44,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539893629] [2025-03-17 14:30:44,287 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:30:44,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:44,291 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:30:44,301 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:44,301 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-17 14:30:44,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:44,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:44,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539893629] [2025-03-17 14:30:44,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539893629] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:44,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:44,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:44,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450662286] [2025-03-17 14:30:44,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:44,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:44,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:44,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:44,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:44,623 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:44,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 200 transitions, 2078 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:44,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:44,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:44,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:45,309 INFO L124 PetriNetUnfolderBase]: 3200/5403 cut-off events. [2025-03-17 14:30:45,309 INFO L125 PetriNetUnfolderBase]: For 78652/78652 co-relation queries the response was YES. [2025-03-17 14:30:45,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26264 conditions, 5403 events. 3200/5403 cut-off events. For 78652/78652 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 35118 event pairs, 1138 based on Foata normal form. 1/5293 useless extension candidates. Maximal degree in co-relation 26160. Up to 4307 conditions per place. [2025-03-17 14:30:45,355 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 212 selfloop transitions, 49 changer transitions 3/269 dead transitions. [2025-03-17 14:30:45,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 269 transitions, 3176 flow [2025-03-17 14:30:45,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 14:30:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 14:30:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 281 transitions. [2025-03-17 14:30:45,356 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3902777777777778 [2025-03-17 14:30:45,356 INFO L175 Difference]: Start difference. First operand has 204 places, 200 transitions, 2078 flow. Second operand 12 states and 281 transitions. [2025-03-17 14:30:45,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 269 transitions, 3176 flow [2025-03-17 14:30:45,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 269 transitions, 2959 flow, removed 84 selfloop flow, removed 7 redundant places. [2025-03-17 14:30:45,550 INFO L231 Difference]: Finished difference. Result has 211 places, 206 transitions, 2133 flow [2025-03-17 14:30:45,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2133, PETRI_PLACES=211, PETRI_TRANSITIONS=206} [2025-03-17 14:30:45,551 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 152 predicate places. [2025-03-17 14:30:45,551 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 206 transitions, 2133 flow [2025-03-17 14:30:45,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:45,551 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:45,551 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:45,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-17 14:30:45,551 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:45,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:45,552 INFO L85 PathProgramCache]: Analyzing trace with hash -2147446892, now seen corresponding path program 19 times [2025-03-17 14:30:45,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:45,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569796329] [2025-03-17 14:30:45,553 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:30:45,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:45,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 14:30:45,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:45,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:45,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:45,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:45,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569796329] [2025-03-17 14:30:45,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569796329] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:45,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:45,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:45,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305004904] [2025-03-17 14:30:45,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:45,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:45,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:45,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:45,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:45,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:45,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 206 transitions, 2133 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:45,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:45,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:45,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:46,570 INFO L124 PetriNetUnfolderBase]: 3200/5419 cut-off events. [2025-03-17 14:30:46,571 INFO L125 PetriNetUnfolderBase]: For 78401/78401 co-relation queries the response was YES. [2025-03-17 14:30:46,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26126 conditions, 5419 events. 3200/5419 cut-off events. For 78401/78401 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 35336 event pairs, 1162 based on Foata normal form. 1/5305 useless extension candidates. Maximal degree in co-relation 26019. Up to 4384 conditions per place. [2025-03-17 14:30:46,619 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 209 selfloop transitions, 51 changer transitions 4/269 dead transitions. [2025-03-17 14:30:46,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 269 transitions, 3101 flow [2025-03-17 14:30:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 14:30:46,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 14:30:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 278 transitions. [2025-03-17 14:30:46,620 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2025-03-17 14:30:46,620 INFO L175 Difference]: Start difference. First operand has 211 places, 206 transitions, 2133 flow. Second operand 12 states and 278 transitions. [2025-03-17 14:30:46,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 269 transitions, 3101 flow [2025-03-17 14:30:46,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 269 transitions, 2928 flow, removed 62 selfloop flow, removed 7 redundant places. [2025-03-17 14:30:46,817 INFO L231 Difference]: Finished difference. Result has 217 places, 210 transitions, 2140 flow [2025-03-17 14:30:46,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1960, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2140, PETRI_PLACES=217, PETRI_TRANSITIONS=210} [2025-03-17 14:30:46,818 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 158 predicate places. [2025-03-17 14:30:46,818 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 210 transitions, 2140 flow [2025-03-17 14:30:46,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:46,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:46,818 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:46,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-17 14:30:46,818 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:46,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:46,819 INFO L85 PathProgramCache]: Analyzing trace with hash 48831932, now seen corresponding path program 20 times [2025-03-17 14:30:46,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:46,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793671694] [2025-03-17 14:30:46,819 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:30:46,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:46,823 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:30:46,832 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:46,832 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:30:46,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:47,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:47,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:47,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793671694] [2025-03-17 14:30:47,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793671694] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:47,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:47,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:47,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528394454] [2025-03-17 14:30:47,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:47,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:47,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:47,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:47,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:47,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:47,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 210 transitions, 2140 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:47,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:47,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:47,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:48,066 INFO L124 PetriNetUnfolderBase]: 3427/5788 cut-off events. [2025-03-17 14:30:48,066 INFO L125 PetriNetUnfolderBase]: For 90458/90458 co-relation queries the response was YES. [2025-03-17 14:30:48,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28980 conditions, 5788 events. 3427/5788 cut-off events. For 90458/90458 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 38242 event pairs, 1394 based on Foata normal form. 1/5660 useless extension candidates. Maximal degree in co-relation 28870. Up to 4833 conditions per place. [2025-03-17 14:30:48,118 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 239 selfloop transitions, 39 changer transitions 3/286 dead transitions. [2025-03-17 14:30:48,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 286 transitions, 3489 flow [2025-03-17 14:30:48,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2025-03-17 14:30:48,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4106060606060606 [2025-03-17 14:30:48,119 INFO L175 Difference]: Start difference. First operand has 217 places, 210 transitions, 2140 flow. Second operand 11 states and 271 transitions. [2025-03-17 14:30:48,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 286 transitions, 3489 flow [2025-03-17 14:30:48,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 286 transitions, 3325 flow, removed 31 selfloop flow, removed 10 redundant places. [2025-03-17 14:30:48,249 INFO L231 Difference]: Finished difference. Result has 222 places, 222 transitions, 2412 flow [2025-03-17 14:30:48,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2412, PETRI_PLACES=222, PETRI_TRANSITIONS=222} [2025-03-17 14:30:48,250 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 163 predicate places. [2025-03-17 14:30:48,250 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 222 transitions, 2412 flow [2025-03-17 14:30:48,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:48,250 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:48,250 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:48,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-17 14:30:48,250 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:48,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:48,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1662836632, now seen corresponding path program 21 times [2025-03-17 14:30:48,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:48,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404831572] [2025-03-17 14:30:48,251 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:30:48,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:48,255 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:30:48,264 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 33 statements. [2025-03-17 14:30:48,264 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 14:30:48,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:48,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:48,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404831572] [2025-03-17 14:30:48,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404831572] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:48,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:48,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:48,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995810552] [2025-03-17 14:30:48,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:48,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:48,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:48,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:48,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:48,523 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:48,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 222 transitions, 2412 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:48,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:48,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:48,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:49,272 INFO L124 PetriNetUnfolderBase]: 3488/5896 cut-off events. [2025-03-17 14:30:49,272 INFO L125 PetriNetUnfolderBase]: For 101334/101334 co-relation queries the response was YES. [2025-03-17 14:30:49,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29975 conditions, 5896 events. 3488/5896 cut-off events. For 101334/101334 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 39209 event pairs, 1498 based on Foata normal form. 1/5770 useless extension candidates. Maximal degree in co-relation 29861. Up to 5103 conditions per place. [2025-03-17 14:30:49,326 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 229 selfloop transitions, 36 changer transitions 4/274 dead transitions. [2025-03-17 14:30:49,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 274 transitions, 3398 flow [2025-03-17 14:30:49,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:49,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:49,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 250 transitions. [2025-03-17 14:30:49,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2025-03-17 14:30:49,327 INFO L175 Difference]: Start difference. First operand has 222 places, 222 transitions, 2412 flow. Second operand 11 states and 250 transitions. [2025-03-17 14:30:49,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 274 transitions, 3398 flow [2025-03-17 14:30:49,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 274 transitions, 3146 flow, removed 110 selfloop flow, removed 4 redundant places. [2025-03-17 14:30:49,540 INFO L231 Difference]: Finished difference. Result has 231 places, 228 transitions, 2395 flow [2025-03-17 14:30:49,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2395, PETRI_PLACES=231, PETRI_TRANSITIONS=228} [2025-03-17 14:30:49,540 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 172 predicate places. [2025-03-17 14:30:49,540 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 228 transitions, 2395 flow [2025-03-17 14:30:49,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:49,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:49,541 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:49,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-17 14:30:49,541 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:49,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:49,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1405392982, now seen corresponding path program 22 times [2025-03-17 14:30:49,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:49,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521408904] [2025-03-17 14:30:49,541 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:30:49,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:49,546 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:30:49,556 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:49,556 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:30:49,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:49,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:49,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521408904] [2025-03-17 14:30:49,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521408904] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:49,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:49,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:49,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158452875] [2025-03-17 14:30:49,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:49,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:49,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:49,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:49,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:49,904 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:30:49,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 228 transitions, 2395 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:30:49,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:49,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:30:49,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:50,781 INFO L124 PetriNetUnfolderBase]: 3843/6441 cut-off events. [2025-03-17 14:30:50,781 INFO L125 PetriNetUnfolderBase]: For 97541/97541 co-relation queries the response was YES. [2025-03-17 14:30:50,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31891 conditions, 6441 events. 3843/6441 cut-off events. For 97541/97541 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 43137 event pairs, 1593 based on Foata normal form. 1/6308 useless extension candidates. Maximal degree in co-relation 31772. Up to 5372 conditions per place. [2025-03-17 14:30:50,850 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 249 selfloop transitions, 44 changer transitions 3/300 dead transitions. [2025-03-17 14:30:50,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 300 transitions, 3705 flow [2025-03-17 14:30:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:50,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:50,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 261 transitions. [2025-03-17 14:30:50,851 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2025-03-17 14:30:50,851 INFO L175 Difference]: Start difference. First operand has 231 places, 228 transitions, 2395 flow. Second operand 11 states and 261 transitions. [2025-03-17 14:30:50,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 300 transitions, 3705 flow [2025-03-17 14:30:51,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 300 transitions, 3551 flow, removed 57 selfloop flow, removed 6 redundant places. [2025-03-17 14:30:51,039 INFO L231 Difference]: Finished difference. Result has 239 places, 237 transitions, 2659 flow [2025-03-17 14:30:51,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2659, PETRI_PLACES=239, PETRI_TRANSITIONS=237} [2025-03-17 14:30:51,040 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 180 predicate places. [2025-03-17 14:30:51,040 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 237 transitions, 2659 flow [2025-03-17 14:30:51,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:30:51,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:51,040 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:51,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-03-17 14:30:51,040 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:51,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:51,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1917046114, now seen corresponding path program 23 times [2025-03-17 14:30:51,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:51,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402598474] [2025-03-17 14:30:51,041 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:30:51,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:51,045 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:30:51,053 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:51,053 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 14:30:51,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:51,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:51,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402598474] [2025-03-17 14:30:51,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402598474] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:51,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:51,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:51,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559296576] [2025-03-17 14:30:51,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:51,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:51,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:51,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:51,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:51,451 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:51,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 237 transitions, 2659 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:51,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:51,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:51,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:52,286 INFO L124 PetriNetUnfolderBase]: 3758/6379 cut-off events. [2025-03-17 14:30:52,286 INFO L125 PetriNetUnfolderBase]: For 114396/114396 co-relation queries the response was YES. [2025-03-17 14:30:52,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32798 conditions, 6379 events. 3758/6379 cut-off events. For 114396/114396 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 43449 event pairs, 1612 based on Foata normal form. 1/6244 useless extension candidates. Maximal degree in co-relation 32674. Up to 5468 conditions per place. [2025-03-17 14:30:52,351 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 258 selfloop transitions, 35 changer transitions 3/301 dead transitions. [2025-03-17 14:30:52,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 301 transitions, 3975 flow [2025-03-17 14:30:52,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:52,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2025-03-17 14:30:52,352 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2025-03-17 14:30:52,352 INFO L175 Difference]: Start difference. First operand has 239 places, 237 transitions, 2659 flow. Second operand 11 states and 260 transitions. [2025-03-17 14:30:52,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 301 transitions, 3975 flow [2025-03-17 14:30:52,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 301 transitions, 3727 flow, removed 105 selfloop flow, removed 5 redundant places. [2025-03-17 14:30:52,730 INFO L231 Difference]: Finished difference. Result has 248 places, 244 transitions, 2755 flow [2025-03-17 14:30:52,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2755, PETRI_PLACES=248, PETRI_TRANSITIONS=244} [2025-03-17 14:30:52,730 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 189 predicate places. [2025-03-17 14:30:52,730 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 244 transitions, 2755 flow [2025-03-17 14:30:52,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:52,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:52,731 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:52,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-03-17 14:30:52,731 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:52,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1475082080, now seen corresponding path program 24 times [2025-03-17 14:30:52,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:52,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956036591] [2025-03-17 14:30:52,731 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:30:52,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:52,736 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:30:52,746 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:52,746 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-17 14:30:52,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:53,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:53,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956036591] [2025-03-17 14:30:53,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956036591] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:53,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:53,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:53,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299527988] [2025-03-17 14:30:53,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:53,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:53,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:53,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:53,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:53,073 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:53,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 244 transitions, 2755 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:53,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:53,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:53,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:53,998 INFO L124 PetriNetUnfolderBase]: 3863/6578 cut-off events. [2025-03-17 14:30:53,998 INFO L125 PetriNetUnfolderBase]: For 127210/127210 co-relation queries the response was YES. [2025-03-17 14:30:54,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33840 conditions, 6578 events. 3863/6578 cut-off events. For 127210/127210 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 45246 event pairs, 1669 based on Foata normal form. 1/6434 useless extension candidates. Maximal degree in co-relation 33710. Up to 5646 conditions per place. [2025-03-17 14:30:54,056 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 264 selfloop transitions, 35 changer transitions 3/307 dead transitions. [2025-03-17 14:30:54,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 307 transitions, 4009 flow [2025-03-17 14:30:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:54,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2025-03-17 14:30:54,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2025-03-17 14:30:54,057 INFO L175 Difference]: Start difference. First operand has 248 places, 244 transitions, 2755 flow. Second operand 11 states and 260 transitions. [2025-03-17 14:30:54,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 307 transitions, 4009 flow [2025-03-17 14:30:54,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 307 transitions, 3775 flow, removed 100 selfloop flow, removed 5 redundant places. [2025-03-17 14:30:54,385 INFO L231 Difference]: Finished difference. Result has 256 places, 250 transitions, 2788 flow [2025-03-17 14:30:54,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2788, PETRI_PLACES=256, PETRI_TRANSITIONS=250} [2025-03-17 14:30:54,385 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 197 predicate places. [2025-03-17 14:30:54,386 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 250 transitions, 2788 flow [2025-03-17 14:30:54,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:54,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:54,386 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:54,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-17 14:30:54,386 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:54,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:54,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1453646180, now seen corresponding path program 25 times [2025-03-17 14:30:54,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:54,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703237020] [2025-03-17 14:30:54,387 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:30:54,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:54,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 14:30:54,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:54,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:30:54,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:54,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:54,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:54,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703237020] [2025-03-17 14:30:54,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703237020] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:54,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:54,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:54,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355148622] [2025-03-17 14:30:54,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:54,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:54,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:54,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:54,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:54,703 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:54,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 250 transitions, 2788 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:54,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:54,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:54,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:55,814 INFO L124 PetriNetUnfolderBase]: 3863/6570 cut-off events. [2025-03-17 14:30:55,815 INFO L125 PetriNetUnfolderBase]: For 125295/125295 co-relation queries the response was YES. [2025-03-17 14:30:55,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33493 conditions, 6570 events. 3863/6570 cut-off events. For 125295/125295 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 45148 event pairs, 1693 based on Foata normal form. 1/6430 useless extension candidates. Maximal degree in co-relation 33359. Up to 5723 conditions per place. [2025-03-17 14:30:55,886 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 260 selfloop transitions, 34 changer transitions 3/302 dead transitions. [2025-03-17 14:30:55,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 302 transitions, 3841 flow [2025-03-17 14:30:55,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:55,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 251 transitions. [2025-03-17 14:30:55,888 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3803030303030303 [2025-03-17 14:30:55,888 INFO L175 Difference]: Start difference. First operand has 256 places, 250 transitions, 2788 flow. Second operand 11 states and 251 transitions. [2025-03-17 14:30:55,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 302 transitions, 3841 flow [2025-03-17 14:30:56,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 302 transitions, 3648 flow, removed 78 selfloop flow, removed 6 redundant places. [2025-03-17 14:30:56,148 INFO L231 Difference]: Finished difference. Result has 262 places, 253 transitions, 2728 flow [2025-03-17 14:30:56,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2595, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2728, PETRI_PLACES=262, PETRI_TRANSITIONS=253} [2025-03-17 14:30:56,148 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 203 predicate places. [2025-03-17 14:30:56,148 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 253 transitions, 2728 flow [2025-03-17 14:30:56,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:56,149 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:56,149 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:56,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-03-17 14:30:56,149 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:56,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:56,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1256153462, now seen corresponding path program 26 times [2025-03-17 14:30:56,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:56,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059812133] [2025-03-17 14:30:56,150 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:30:56,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:56,156 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:30:56,168 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:56,168 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:30:56,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:56,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:56,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059812133] [2025-03-17 14:30:56,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059812133] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:56,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:56,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:56,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803141192] [2025-03-17 14:30:56,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:56,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:56,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:56,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:56,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:56,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:56,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 253 transitions, 2728 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:56,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:56,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:56,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:57,525 INFO L124 PetriNetUnfolderBase]: 3980/6783 cut-off events. [2025-03-17 14:30:57,525 INFO L125 PetriNetUnfolderBase]: For 132771/132771 co-relation queries the response was YES. [2025-03-17 14:30:57,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34822 conditions, 6783 events. 3980/6783 cut-off events. For 132771/132771 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 47213 event pairs, 1751 based on Foata normal form. 1/6638 useless extension candidates. Maximal degree in co-relation 34685. Up to 5809 conditions per place. [2025-03-17 14:30:57,592 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 275 selfloop transitions, 38 changer transitions 3/321 dead transitions. [2025-03-17 14:30:57,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 321 transitions, 4101 flow [2025-03-17 14:30:57,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:57,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 263 transitions. [2025-03-17 14:30:57,593 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3984848484848485 [2025-03-17 14:30:57,593 INFO L175 Difference]: Start difference. First operand has 262 places, 253 transitions, 2728 flow. Second operand 11 states and 263 transitions. [2025-03-17 14:30:57,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 321 transitions, 4101 flow [2025-03-17 14:30:57,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 321 transitions, 3973 flow, removed 32 selfloop flow, removed 8 redundant places. [2025-03-17 14:30:57,864 INFO L231 Difference]: Finished difference. Result has 268 places, 261 transitions, 2961 flow [2025-03-17 14:30:57,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2961, PETRI_PLACES=268, PETRI_TRANSITIONS=261} [2025-03-17 14:30:57,865 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 209 predicate places. [2025-03-17 14:30:57,865 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 261 transitions, 2961 flow [2025-03-17 14:30:57,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:57,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:57,865 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:57,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-17 14:30:57,865 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:57,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:57,866 INFO L85 PathProgramCache]: Analyzing trace with hash -955585608, now seen corresponding path program 27 times [2025-03-17 14:30:57,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:57,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571538450] [2025-03-17 14:30:57,866 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:30:57,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:57,870 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:30:57,879 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 33 statements. [2025-03-17 14:30:57,879 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 14:30:57,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:58,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:58,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571538450] [2025-03-17 14:30:58,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571538450] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:58,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:58,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:58,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974990248] [2025-03-17 14:30:58,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:58,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:58,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:58,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:58,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:58,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:30:58,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 261 transitions, 2961 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:58,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:58,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:30:58,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:30:59,089 INFO L124 PetriNetUnfolderBase]: 3980/6786 cut-off events. [2025-03-17 14:30:59,089 INFO L125 PetriNetUnfolderBase]: For 142663/142663 co-relation queries the response was YES. [2025-03-17 14:30:59,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35354 conditions, 6786 events. 3980/6786 cut-off events. For 142663/142663 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 47223 event pairs, 1730 based on Foata normal form. 1/6641 useless extension candidates. Maximal degree in co-relation 35213. Up to 5758 conditions per place. [2025-03-17 14:30:59,147 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 274 selfloop transitions, 41 changer transitions 5/325 dead transitions. [2025-03-17 14:30:59,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 325 transitions, 4113 flow [2025-03-17 14:30:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:30:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:30:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2025-03-17 14:30:59,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4075757575757576 [2025-03-17 14:30:59,148 INFO L175 Difference]: Start difference. First operand has 268 places, 261 transitions, 2961 flow. Second operand 11 states and 269 transitions. [2025-03-17 14:30:59,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 325 transitions, 4113 flow [2025-03-17 14:30:59,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 325 transitions, 3906 flow, removed 91 selfloop flow, removed 5 redundant places. [2025-03-17 14:30:59,393 INFO L231 Difference]: Finished difference. Result has 275 places, 265 transitions, 2909 flow [2025-03-17 14:30:59,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2754, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2909, PETRI_PLACES=275, PETRI_TRANSITIONS=265} [2025-03-17 14:30:59,394 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 216 predicate places. [2025-03-17 14:30:59,394 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 265 transitions, 2909 flow [2025-03-17 14:30:59,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:30:59,394 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:30:59,394 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:30:59,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-03-17 14:30:59,395 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:30:59,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:30:59,395 INFO L85 PathProgramCache]: Analyzing trace with hash -606412002, now seen corresponding path program 28 times [2025-03-17 14:30:59,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:30:59,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423162531] [2025-03-17 14:30:59,395 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:30:59,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:30:59,400 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:30:59,409 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:30:59,410 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:30:59,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:30:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:30:59,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:30:59,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423162531] [2025-03-17 14:30:59,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423162531] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:30:59,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:30:59,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:30:59,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027016179] [2025-03-17 14:30:59,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:30:59,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:30:59,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:30:59,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:30:59,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:30:59,663 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:30:59,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 265 transitions, 2909 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:30:59,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:30:59,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:30:59,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:00,676 INFO L124 PetriNetUnfolderBase]: 4214/7125 cut-off events. [2025-03-17 14:31:00,678 INFO L125 PetriNetUnfolderBase]: For 141937/141937 co-relation queries the response was YES. [2025-03-17 14:31:00,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36446 conditions, 7125 events. 4214/7125 cut-off events. For 141937/141937 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 49421 event pairs, 1906 based on Foata normal form. 1/6975 useless extension candidates. Maximal degree in co-relation 36302. Up to 6251 conditions per place. [2025-03-17 14:31:00,735 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 272 selfloop transitions, 37 changer transitions 3/316 dead transitions. [2025-03-17 14:31:00,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 316 transitions, 3945 flow [2025-03-17 14:31:00,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:00,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 242 transitions. [2025-03-17 14:31:00,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2025-03-17 14:31:00,736 INFO L175 Difference]: Start difference. First operand has 275 places, 265 transitions, 2909 flow. Second operand 11 states and 242 transitions. [2025-03-17 14:31:00,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 316 transitions, 3945 flow [2025-03-17 14:31:01,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 316 transitions, 3810 flow, removed 32 selfloop flow, removed 7 redundant places. [2025-03-17 14:31:01,031 INFO L231 Difference]: Finished difference. Result has 280 places, 268 transitions, 2920 flow [2025-03-17 14:31:01,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2774, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2920, PETRI_PLACES=280, PETRI_TRANSITIONS=268} [2025-03-17 14:31:01,032 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 221 predicate places. [2025-03-17 14:31:01,032 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 268 transitions, 2920 flow [2025-03-17 14:31:01,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:31:01,032 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:01,032 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:01,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2025-03-17 14:31:01,032 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:01,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:01,033 INFO L85 PathProgramCache]: Analyzing trace with hash -719749034, now seen corresponding path program 29 times [2025-03-17 14:31:01,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:01,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767265988] [2025-03-17 14:31:01,033 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:31:01,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:01,038 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:31:01,045 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:31:01,045 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 14:31:01,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:01,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:01,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767265988] [2025-03-17 14:31:01,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767265988] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:01,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:01,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:31:01,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962917417] [2025-03-17 14:31:01,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:01,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:31:01,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:01,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:31:01,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:31:01,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:31:01,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 268 transitions, 2920 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:01,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:01,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:31:01,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:02,175 INFO L124 PetriNetUnfolderBase]: 4016/6865 cut-off events. [2025-03-17 14:31:02,175 INFO L125 PetriNetUnfolderBase]: For 132347/132347 co-relation queries the response was YES. [2025-03-17 14:31:02,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34786 conditions, 6865 events. 4016/6865 cut-off events. For 132347/132347 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 48142 event pairs, 1778 based on Foata normal form. 1/6714 useless extension candidates. Maximal degree in co-relation 34639. Up to 5943 conditions per place. [2025-03-17 14:31:02,253 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 272 selfloop transitions, 41 changer transitions 4/322 dead transitions. [2025-03-17 14:31:02,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 322 transitions, 3989 flow [2025-03-17 14:31:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:02,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 256 transitions. [2025-03-17 14:31:02,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2025-03-17 14:31:02,254 INFO L175 Difference]: Start difference. First operand has 280 places, 268 transitions, 2920 flow. Second operand 11 states and 256 transitions. [2025-03-17 14:31:02,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 322 transitions, 3989 flow [2025-03-17 14:31:02,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 322 transitions, 3865 flow, removed 27 selfloop flow, removed 8 redundant places. [2025-03-17 14:31:02,719 INFO L231 Difference]: Finished difference. Result has 284 places, 272 transitions, 2966 flow [2025-03-17 14:31:02,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2966, PETRI_PLACES=284, PETRI_TRANSITIONS=272} [2025-03-17 14:31:02,720 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 225 predicate places. [2025-03-17 14:31:02,720 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 272 transitions, 2966 flow [2025-03-17 14:31:02,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:02,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:02,720 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:02,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-03-17 14:31:02,720 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:02,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:02,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1479938406, now seen corresponding path program 30 times [2025-03-17 14:31:02,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:02,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617015685] [2025-03-17 14:31:02,721 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:31:02,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:02,726 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:31:02,742 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:31:02,742 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-17 14:31:02,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:03,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617015685] [2025-03-17 14:31:03,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617015685] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:03,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:03,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:31:03,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234101319] [2025-03-17 14:31:03,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:03,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:31:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:03,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:31:03,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:31:03,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:31:03,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 272 transitions, 2966 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:03,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:03,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:31:03,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:04,130 INFO L124 PetriNetUnfolderBase]: 4016/6859 cut-off events. [2025-03-17 14:31:04,130 INFO L125 PetriNetUnfolderBase]: For 132891/132891 co-relation queries the response was YES. [2025-03-17 14:31:04,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34834 conditions, 6859 events. 4016/6859 cut-off events. For 132891/132891 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 47995 event pairs, 1825 based on Foata normal form. 1/6710 useless extension candidates. Maximal degree in co-relation 34685. Up to 6021 conditions per place. [2025-03-17 14:31:04,204 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 275 selfloop transitions, 35 changer transitions 3/318 dead transitions. [2025-03-17 14:31:04,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 318 transitions, 3950 flow [2025-03-17 14:31:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:04,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 247 transitions. [2025-03-17 14:31:04,205 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37424242424242427 [2025-03-17 14:31:04,205 INFO L175 Difference]: Start difference. First operand has 284 places, 272 transitions, 2966 flow. Second operand 11 states and 247 transitions. [2025-03-17 14:31:04,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 318 transitions, 3950 flow [2025-03-17 14:31:04,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 318 transitions, 3796 flow, removed 38 selfloop flow, removed 8 redundant places. [2025-03-17 14:31:04,529 INFO L231 Difference]: Finished difference. Result has 288 places, 274 transitions, 2906 flow [2025-03-17 14:31:04,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2812, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2906, PETRI_PLACES=288, PETRI_TRANSITIONS=274} [2025-03-17 14:31:04,530 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 229 predicate places. [2025-03-17 14:31:04,530 INFO L471 AbstractCegarLoop]: Abstraction has has 288 places, 274 transitions, 2906 flow [2025-03-17 14:31:04,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:04,530 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:04,530 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:04,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2025-03-17 14:31:04,530 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:04,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:04,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1268982918, now seen corresponding path program 31 times [2025-03-17 14:31:04,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:04,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430424822] [2025-03-17 14:31:04,531 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:31:04,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:04,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 14:31:04,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:31:04,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:31:04,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:04,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:04,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430424822] [2025-03-17 14:31:04,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430424822] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:04,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:04,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:31:04,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913109828] [2025-03-17 14:31:04,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:04,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:31:04,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:04,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:31:04,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:31:04,882 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:31:04,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 274 transitions, 2906 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:04,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:04,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:31:04,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:05,893 INFO L124 PetriNetUnfolderBase]: 4147/7081 cut-off events. [2025-03-17 14:31:05,893 INFO L125 PetriNetUnfolderBase]: For 147267/147267 co-relation queries the response was YES. [2025-03-17 14:31:05,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36556 conditions, 7081 events. 4147/7081 cut-off events. For 147267/147267 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 49985 event pairs, 1863 based on Foata normal form. 1/6924 useless extension candidates. Maximal degree in co-relation 36405. Up to 6134 conditions per place. [2025-03-17 14:31:05,968 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 291 selfloop transitions, 35 changer transitions 3/334 dead transitions. [2025-03-17 14:31:05,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 334 transitions, 4431 flow [2025-03-17 14:31:05,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:05,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 257 transitions. [2025-03-17 14:31:05,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3893939393939394 [2025-03-17 14:31:05,969 INFO L175 Difference]: Start difference. First operand has 288 places, 274 transitions, 2906 flow. Second operand 11 states and 257 transitions. [2025-03-17 14:31:05,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 334 transitions, 4431 flow [2025-03-17 14:31:06,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 334 transitions, 4363 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-03-17 14:31:06,322 INFO L231 Difference]: Finished difference. Result has 294 places, 283 transitions, 3335 flow [2025-03-17 14:31:06,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3335, PETRI_PLACES=294, PETRI_TRANSITIONS=283} [2025-03-17 14:31:06,322 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 235 predicate places. [2025-03-17 14:31:06,322 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 283 transitions, 3335 flow [2025-03-17 14:31:06,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:06,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:06,323 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:06,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2025-03-17 14:31:06,323 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:06,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:06,323 INFO L85 PathProgramCache]: Analyzing trace with hash 917004224, now seen corresponding path program 32 times [2025-03-17 14:31:06,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:06,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047106535] [2025-03-17 14:31:06,323 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:31:06,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:06,328 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:31:06,335 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:31:06,335 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:31:06,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:06,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:06,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047106535] [2025-03-17 14:31:06,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047106535] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:06,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:06,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:31:06,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018445816] [2025-03-17 14:31:06,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:06,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:31:06,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:06,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:31:06,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:31:06,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:31:06,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 283 transitions, 3335 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:06,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:06,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:31:06,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:07,830 INFO L124 PetriNetUnfolderBase]: 4330/7386 cut-off events. [2025-03-17 14:31:07,830 INFO L125 PetriNetUnfolderBase]: For 200837/200837 co-relation queries the response was YES. [2025-03-17 14:31:07,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40729 conditions, 7386 events. 4330/7386 cut-off events. For 200837/200837 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 52622 event pairs, 1910 based on Foata normal form. 1/7217 useless extension candidates. Maximal degree in co-relation 40574. Up to 6323 conditions per place. [2025-03-17 14:31:07,893 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 309 selfloop transitions, 38 changer transitions 3/355 dead transitions. [2025-03-17 14:31:07,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 355 transitions, 4986 flow [2025-03-17 14:31:07,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:07,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 270 transitions. [2025-03-17 14:31:07,894 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2025-03-17 14:31:07,894 INFO L175 Difference]: Start difference. First operand has 294 places, 283 transitions, 3335 flow. Second operand 11 states and 270 transitions. [2025-03-17 14:31:07,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 355 transitions, 4986 flow [2025-03-17 14:31:08,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 355 transitions, 4634 flow, removed 160 selfloop flow, removed 5 redundant places. [2025-03-17 14:31:08,353 INFO L231 Difference]: Finished difference. Result has 304 places, 294 transitions, 3513 flow [2025-03-17 14:31:08,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2983, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3513, PETRI_PLACES=304, PETRI_TRANSITIONS=294} [2025-03-17 14:31:08,353 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 245 predicate places. [2025-03-17 14:31:08,353 INFO L471 AbstractCegarLoop]: Abstraction has has 304 places, 294 transitions, 3513 flow [2025-03-17 14:31:08,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:08,353 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:08,353 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:08,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2025-03-17 14:31:08,354 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:08,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:08,354 INFO L85 PathProgramCache]: Analyzing trace with hash 877680422, now seen corresponding path program 33 times [2025-03-17 14:31:08,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:08,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860253875] [2025-03-17 14:31:08,354 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:31:08,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:08,359 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:31:08,366 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 33 statements. [2025-03-17 14:31:08,366 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 14:31:08,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:08,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:08,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860253875] [2025-03-17 14:31:08,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860253875] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:08,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:08,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:31:08,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956453328] [2025-03-17 14:31:08,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:08,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:31:08,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:08,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:31:08,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:31:08,605 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:31:08,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 294 transitions, 3513 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:08,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:08,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:31:08,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:09,591 INFO L124 PetriNetUnfolderBase]: 4391/7494 cut-off events. [2025-03-17 14:31:09,592 INFO L125 PetriNetUnfolderBase]: For 207377/207377 co-relation queries the response was YES. [2025-03-17 14:31:09,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41130 conditions, 7494 events. 4391/7494 cut-off events. For 207377/207377 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 53549 event pairs, 2014 based on Foata normal form. 1/7327 useless extension candidates. Maximal degree in co-relation 40969. Up to 6593 conditions per place. [2025-03-17 14:31:09,683 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 299 selfloop transitions, 35 changer transitions 4/343 dead transitions. [2025-03-17 14:31:09,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 343 transitions, 4687 flow [2025-03-17 14:31:09,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 249 transitions. [2025-03-17 14:31:09,684 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37727272727272726 [2025-03-17 14:31:09,684 INFO L175 Difference]: Start difference. First operand has 304 places, 294 transitions, 3513 flow. Second operand 11 states and 249 transitions. [2025-03-17 14:31:09,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 343 transitions, 4687 flow [2025-03-17 14:31:10,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 343 transitions, 4373 flow, removed 142 selfloop flow, removed 4 redundant places. [2025-03-17 14:31:10,254 INFO L231 Difference]: Finished difference. Result has 313 places, 300 transitions, 3464 flow [2025-03-17 14:31:10,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3464, PETRI_PLACES=313, PETRI_TRANSITIONS=300} [2025-03-17 14:31:10,255 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 254 predicate places. [2025-03-17 14:31:10,255 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 300 transitions, 3464 flow [2025-03-17 14:31:10,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:10,255 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:10,255 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:10,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2025-03-17 14:31:10,255 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:10,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:10,255 INFO L85 PathProgramCache]: Analyzing trace with hash 620236772, now seen corresponding path program 34 times [2025-03-17 14:31:10,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:10,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23681757] [2025-03-17 14:31:10,255 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:31:10,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:10,260 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:31:10,269 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:31:10,269 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:31:10,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:10,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:10,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23681757] [2025-03-17 14:31:10,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23681757] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:10,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:10,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:31:10,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295843031] [2025-03-17 14:31:10,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:10,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:31:10,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:10,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:31:10,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:31:10,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:31:10,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 300 transitions, 3464 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:31:10,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:10,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:31:10,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:11,732 INFO L124 PetriNetUnfolderBase]: 4761/8053 cut-off events. [2025-03-17 14:31:11,732 INFO L125 PetriNetUnfolderBase]: For 223054/223054 co-relation queries the response was YES. [2025-03-17 14:31:11,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43928 conditions, 8053 events. 4761/8053 cut-off events. For 223054/223054 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 57589 event pairs, 2146 based on Foata normal form. 1/7885 useless extension candidates. Maximal degree in co-relation 43762. Up to 6862 conditions per place. [2025-03-17 14:31:11,833 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 320 selfloop transitions, 43 changer transitions 3/370 dead transitions. [2025-03-17 14:31:11,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 370 transitions, 5106 flow [2025-03-17 14:31:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:11,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:11,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 261 transitions. [2025-03-17 14:31:11,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2025-03-17 14:31:11,834 INFO L175 Difference]: Start difference. First operand has 313 places, 300 transitions, 3464 flow. Second operand 11 states and 261 transitions. [2025-03-17 14:31:11,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 370 transitions, 5106 flow [2025-03-17 14:31:12,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 370 transitions, 4880 flow, removed 94 selfloop flow, removed 6 redundant places. [2025-03-17 14:31:12,494 INFO L231 Difference]: Finished difference. Result has 321 places, 309 transitions, 3780 flow [2025-03-17 14:31:12,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3238, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3780, PETRI_PLACES=321, PETRI_TRANSITIONS=309} [2025-03-17 14:31:12,494 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 262 predicate places. [2025-03-17 14:31:12,494 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 309 transitions, 3780 flow [2025-03-17 14:31:12,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:31:12,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:12,494 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:12,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2025-03-17 14:31:12,495 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:12,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:12,495 INFO L85 PathProgramCache]: Analyzing trace with hash -378414132, now seen corresponding path program 35 times [2025-03-17 14:31:12,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:12,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347238360] [2025-03-17 14:31:12,495 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:31:12,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:12,500 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:31:12,507 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:31:12,507 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 14:31:12,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:12,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:12,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347238360] [2025-03-17 14:31:12,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347238360] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:12,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:12,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:31:12,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231791027] [2025-03-17 14:31:12,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:12,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:31:12,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:12,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:31:12,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:31:12,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:31:12,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 309 transitions, 3780 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:12,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:12,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:31:12,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:14,039 INFO L124 PetriNetUnfolderBase]: 4626/7887 cut-off events. [2025-03-17 14:31:14,040 INFO L125 PetriNetUnfolderBase]: For 244584/244584 co-relation queries the response was YES. [2025-03-17 14:31:14,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44208 conditions, 7887 events. 4626/7887 cut-off events. For 244584/244584 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 57027 event pairs, 2142 based on Foata normal form. 1/7723 useless extension candidates. Maximal degree in co-relation 44037. Up to 6884 conditions per place. [2025-03-17 14:31:14,129 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 326 selfloop transitions, 34 changer transitions 3/368 dead transitions. [2025-03-17 14:31:14,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 368 transitions, 5247 flow [2025-03-17 14:31:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 259 transitions. [2025-03-17 14:31:14,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3924242424242424 [2025-03-17 14:31:14,130 INFO L175 Difference]: Start difference. First operand has 321 places, 309 transitions, 3780 flow. Second operand 11 states and 259 transitions. [2025-03-17 14:31:14,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 368 transitions, 5247 flow [2025-03-17 14:31:14,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 368 transitions, 4905 flow, removed 153 selfloop flow, removed 5 redundant places. [2025-03-17 14:31:14,951 INFO L231 Difference]: Finished difference. Result has 329 places, 314 transitions, 3758 flow [2025-03-17 14:31:14,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3442, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3758, PETRI_PLACES=329, PETRI_TRANSITIONS=314} [2025-03-17 14:31:14,951 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 270 predicate places. [2025-03-17 14:31:14,951 INFO L471 AbstractCegarLoop]: Abstraction has has 329 places, 314 transitions, 3758 flow [2025-03-17 14:31:14,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:14,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:14,952 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:14,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2025-03-17 14:31:14,952 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:14,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash 668489970, now seen corresponding path program 36 times [2025-03-17 14:31:14,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:14,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514129489] [2025-03-17 14:31:14,952 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:31:14,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:14,957 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:31:14,965 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:31:14,965 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-17 14:31:14,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:15,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:15,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514129489] [2025-03-17 14:31:15,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514129489] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:15,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:15,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:31:15,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559887849] [2025-03-17 14:31:15,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:15,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:31:15,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:15,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:31:15,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:31:15,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:31:15,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 314 transitions, 3758 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:15,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:15,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:31:15,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:16,477 INFO L124 PetriNetUnfolderBase]: 4626/7881 cut-off events. [2025-03-17 14:31:16,477 INFO L125 PetriNetUnfolderBase]: For 231456/231456 co-relation queries the response was YES. [2025-03-17 14:31:16,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42991 conditions, 7881 events. 4626/7881 cut-off events. For 231456/231456 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 56916 event pairs, 2151 based on Foata normal form. 1/7720 useless extension candidates. Maximal degree in co-relation 42815. Up to 6846 conditions per place. [2025-03-17 14:31:16,560 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 325 selfloop transitions, 37 changer transitions 4/371 dead transitions. [2025-03-17 14:31:16,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 371 transitions, 5006 flow [2025-03-17 14:31:16,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 262 transitions. [2025-03-17 14:31:16,561 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2025-03-17 14:31:16,562 INFO L175 Difference]: Start difference. First operand has 329 places, 314 transitions, 3758 flow. Second operand 11 states and 262 transitions. [2025-03-17 14:31:16,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 371 transitions, 5006 flow [2025-03-17 14:31:17,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 371 transitions, 4753 flow, removed 109 selfloop flow, removed 6 redundant places. [2025-03-17 14:31:17,235 INFO L231 Difference]: Finished difference. Result has 335 places, 317 transitions, 3662 flow [2025-03-17 14:31:17,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3505, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3662, PETRI_PLACES=335, PETRI_TRANSITIONS=317} [2025-03-17 14:31:17,235 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 276 predicate places. [2025-03-17 14:31:17,235 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 317 transitions, 3662 flow [2025-03-17 14:31:17,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:17,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:17,235 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:17,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2025-03-17 14:31:17,236 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:17,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:17,236 INFO L85 PathProgramCache]: Analyzing trace with hash 470997252, now seen corresponding path program 37 times [2025-03-17 14:31:17,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:17,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232242683] [2025-03-17 14:31:17,236 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:31:17,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:17,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 14:31:17,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:31:17,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:31:17,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:17,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:17,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232242683] [2025-03-17 14:31:17,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232242683] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:17,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:17,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:31:17,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310475916] [2025-03-17 14:31:17,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:17,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:31:17,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:17,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:31:17,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:31:17,564 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:31:17,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 317 transitions, 3662 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:17,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:17,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:31:17,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:18,851 INFO L124 PetriNetUnfolderBase]: 4689/7995 cut-off events. [2025-03-17 14:31:18,851 INFO L125 PetriNetUnfolderBase]: For 234183/234183 co-relation queries the response was YES. [2025-03-17 14:31:18,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43505 conditions, 7995 events. 4689/7995 cut-off events. For 234183/234183 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 57895 event pairs, 2212 based on Foata normal form. 1/7832 useless extension candidates. Maximal degree in co-relation 43326. Up to 6976 conditions per place. [2025-03-17 14:31:18,940 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 332 selfloop transitions, 35 changer transitions 3/375 dead transitions. [2025-03-17 14:31:18,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 375 transitions, 5158 flow [2025-03-17 14:31:18,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 259 transitions. [2025-03-17 14:31:18,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3924242424242424 [2025-03-17 14:31:18,941 INFO L175 Difference]: Start difference. First operand has 335 places, 317 transitions, 3662 flow. Second operand 11 states and 259 transitions. [2025-03-17 14:31:18,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 375 transitions, 5158 flow [2025-03-17 14:31:19,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 375 transitions, 5033 flow, removed 31 selfloop flow, removed 7 redundant places. [2025-03-17 14:31:19,612 INFO L231 Difference]: Finished difference. Result has 341 places, 322 transitions, 3867 flow [2025-03-17 14:31:19,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3537, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3867, PETRI_PLACES=341, PETRI_TRANSITIONS=322} [2025-03-17 14:31:19,612 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 282 predicate places. [2025-03-17 14:31:19,612 INFO L471 AbstractCegarLoop]: Abstraction has has 341 places, 322 transitions, 3867 flow [2025-03-17 14:31:19,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:19,612 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:19,613 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:19,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2025-03-17 14:31:19,613 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:19,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:19,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1659342762, now seen corresponding path program 38 times [2025-03-17 14:31:19,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:19,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042231560] [2025-03-17 14:31:19,613 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:31:19,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:19,619 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:31:19,629 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:31:19,630 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:31:19,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:19,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:19,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042231560] [2025-03-17 14:31:19,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042231560] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:19,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:19,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:31:19,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447405124] [2025-03-17 14:31:19,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:19,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:31:19,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:19,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:31:19,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:31:19,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:31:19,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 322 transitions, 3867 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:19,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:19,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:31:19,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:21,414 INFO L124 PetriNetUnfolderBase]: 4689/7998 cut-off events. [2025-03-17 14:31:21,414 INFO L125 PetriNetUnfolderBase]: For 245836/245836 co-relation queries the response was YES. [2025-03-17 14:31:21,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43839 conditions, 7998 events. 4689/7998 cut-off events. For 245836/245836 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 57989 event pairs, 2181 based on Foata normal form. 1/7835 useless extension candidates. Maximal degree in co-relation 43656. Up to 6894 conditions per place. [2025-03-17 14:31:21,533 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 333 selfloop transitions, 40 changer transitions 5/383 dead transitions. [2025-03-17 14:31:21,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 383 transitions, 5167 flow [2025-03-17 14:31:21,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:21,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:21,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2025-03-17 14:31:21,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2025-03-17 14:31:21,534 INFO L175 Difference]: Start difference. First operand has 341 places, 322 transitions, 3867 flow. Second operand 11 states and 268 transitions. [2025-03-17 14:31:21,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 383 transitions, 5167 flow [2025-03-17 14:31:22,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 383 transitions, 4899 flow, removed 116 selfloop flow, removed 6 redundant places. [2025-03-17 14:31:22,155 INFO L231 Difference]: Finished difference. Result has 347 places, 326 transitions, 3772 flow [2025-03-17 14:31:22,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3599, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3772, PETRI_PLACES=347, PETRI_TRANSITIONS=326} [2025-03-17 14:31:22,156 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 288 predicate places. [2025-03-17 14:31:22,156 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 326 transitions, 3772 flow [2025-03-17 14:31:22,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:22,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:22,156 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:22,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2025-03-17 14:31:22,156 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:22,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1504905244, now seen corresponding path program 39 times [2025-03-17 14:31:22,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:22,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047866960] [2025-03-17 14:31:22,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:31:22,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:22,162 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:31:22,174 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 33 statements. [2025-03-17 14:31:22,174 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 14:31:22,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:22,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:22,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047866960] [2025-03-17 14:31:22,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047866960] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:22,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:22,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:31:22,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079294635] [2025-03-17 14:31:22,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:22,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:31:22,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:22,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:31:22,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:31:22,458 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:31:22,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 326 transitions, 3772 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:22,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:22,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:31:22,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:23,821 INFO L124 PetriNetUnfolderBase]: 4689/7996 cut-off events. [2025-03-17 14:31:23,821 INFO L125 PetriNetUnfolderBase]: For 228819/228819 co-relation queries the response was YES. [2025-03-17 14:31:23,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43007 conditions, 7996 events. 4689/7996 cut-off events. For 228819/228819 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 58101 event pairs, 2160 based on Foata normal form. 1/7833 useless extension candidates. Maximal degree in co-relation 42821. Up to 6824 conditions per place. [2025-03-17 14:31:23,900 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 330 selfloop transitions, 45 changer transitions 5/385 dead transitions. [2025-03-17 14:31:23,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 385 transitions, 5002 flow [2025-03-17 14:31:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 267 transitions. [2025-03-17 14:31:23,901 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40454545454545454 [2025-03-17 14:31:23,901 INFO L175 Difference]: Start difference. First operand has 347 places, 326 transitions, 3772 flow. Second operand 11 states and 267 transitions. [2025-03-17 14:31:23,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 385 transitions, 5002 flow [2025-03-17 14:31:24,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 385 transitions, 4837 flow, removed 48 selfloop flow, removed 7 redundant places. [2025-03-17 14:31:24,459 INFO L231 Difference]: Finished difference. Result has 352 places, 330 transitions, 3801 flow [2025-03-17 14:31:24,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3607, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3801, PETRI_PLACES=352, PETRI_TRANSITIONS=330} [2025-03-17 14:31:24,459 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 293 predicate places. [2025-03-17 14:31:24,459 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 330 transitions, 3801 flow [2025-03-17 14:31:24,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:24,460 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:24,460 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:24,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2025-03-17 14:31:24,460 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:24,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:24,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1391568212, now seen corresponding path program 40 times [2025-03-17 14:31:24,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:24,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281592238] [2025-03-17 14:31:24,460 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:31:24,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:24,465 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-03-17 14:31:24,473 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:31:24,473 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:31:24,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:24,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:24,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:24,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281592238] [2025-03-17 14:31:24,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281592238] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:24,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:24,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:31:24,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149376936] [2025-03-17 14:31:24,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:24,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:31:24,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:24,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:31:24,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:31:24,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 60 [2025-03-17 14:31:24,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 330 transitions, 3801 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:31:24,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:24,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 60 [2025-03-17 14:31:24,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:26,104 INFO L124 PetriNetUnfolderBase]: 4923/8344 cut-off events. [2025-03-17 14:31:26,104 INFO L125 PetriNetUnfolderBase]: For 240223/240223 co-relation queries the response was YES. [2025-03-17 14:31:26,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44651 conditions, 8344 events. 4923/8344 cut-off events. For 240223/240223 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 60270 event pairs, 2369 based on Foata normal form. 1/8177 useless extension candidates. Maximal degree in co-relation 44462. Up to 7386 conditions per place. [2025-03-17 14:31:26,224 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 336 selfloop transitions, 36 changer transitions 3/379 dead transitions. [2025-03-17 14:31:26,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 379 transitions, 4981 flow [2025-03-17 14:31:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 242 transitions. [2025-03-17 14:31:26,225 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2025-03-17 14:31:26,225 INFO L175 Difference]: Start difference. First operand has 352 places, 330 transitions, 3801 flow. Second operand 11 states and 242 transitions. [2025-03-17 14:31:26,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 379 transitions, 4981 flow [2025-03-17 14:31:27,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 379 transitions, 4798 flow, removed 53 selfloop flow, removed 7 redundant places. [2025-03-17 14:31:27,133 INFO L231 Difference]: Finished difference. Result has 357 places, 333 transitions, 3784 flow [2025-03-17 14:31:27,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3618, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3784, PETRI_PLACES=357, PETRI_TRANSITIONS=333} [2025-03-17 14:31:27,133 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 298 predicate places. [2025-03-17 14:31:27,133 INFO L471 AbstractCegarLoop]: Abstraction has has 357 places, 333 transitions, 3784 flow [2025-03-17 14:31:27,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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) [2025-03-17 14:31:27,133 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:27,133 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:27,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2025-03-17 14:31:27,133 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:27,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:27,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1509474512, now seen corresponding path program 41 times [2025-03-17 14:31:27,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:27,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592916106] [2025-03-17 14:31:27,134 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:31:27,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:27,139 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-03-17 14:31:27,144 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 14:31:27,144 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 14:31:27,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:27,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:27,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592916106] [2025-03-17 14:31:27,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592916106] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:27,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:27,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 14:31:27,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39342190] [2025-03-17 14:31:27,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:27,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 14:31:27,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:27,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 14:31:27,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:31:27,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 60 [2025-03-17 14:31:27,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 333 transitions, 3784 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:27,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:27,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 60 [2025-03-17 14:31:27,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:28,797 INFO L124 PetriNetUnfolderBase]: 4725/8071 cut-off events. [2025-03-17 14:31:28,797 INFO L125 PetriNetUnfolderBase]: For 220383/220383 co-relation queries the response was YES. [2025-03-17 14:31:28,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42541 conditions, 8071 events. 4725/8071 cut-off events. For 220383/220383 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 58831 event pairs, 2276 based on Foata normal form. 1/7904 useless extension candidates. Maximal degree in co-relation 42349. Up to 7157 conditions per place. [2025-03-17 14:31:28,910 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 334 selfloop transitions, 34 changer transitions 3/376 dead transitions. [2025-03-17 14:31:28,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 376 transitions, 4880 flow [2025-03-17 14:31:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:31:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:31:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 246 transitions. [2025-03-17 14:31:28,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2025-03-17 14:31:28,912 INFO L175 Difference]: Start difference. First operand has 357 places, 333 transitions, 3784 flow. Second operand 11 states and 246 transitions. [2025-03-17 14:31:28,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 376 transitions, 4880 flow [2025-03-17 14:31:29,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 376 transitions, 4712 flow, removed 49 selfloop flow, removed 8 redundant places. [2025-03-17 14:31:29,538 INFO L231 Difference]: Finished difference. Result has 361 places, 335 transitions, 3710 flow [2025-03-17 14:31:29,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3618, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3710, PETRI_PLACES=361, PETRI_TRANSITIONS=335} [2025-03-17 14:31:29,538 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 302 predicate places. [2025-03-17 14:31:29,538 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 335 transitions, 3710 flow [2025-03-17 14:31:29,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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) [2025-03-17 14:31:29,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:29,539 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:29,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2025-03-17 14:31:29,539 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:29,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:29,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1099470015, now seen corresponding path program 1 times [2025-03-17 14:31:29,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:29,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367532137] [2025-03-17 14:31:29,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:31:29,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:29,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 14:31:29,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 14:31:29,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:31:29,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:31:29,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:29,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367532137] [2025-03-17 14:31:29,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367532137] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:31:29,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801168814] [2025-03-17 14:31:29,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:31:29,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:31:29,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:31:29,598 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:31:29,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 14:31:29,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 14:31:29,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 14:31:29,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:31:29,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:29,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 14:31:29,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:31:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:31:29,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:31:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:31:29,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801168814] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:31:29,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:31:29,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 14:31:29,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284109876] [2025-03-17 14:31:29,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:31:29,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 14:31:29,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:29,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 14:31:29,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-03-17 14:31:29,793 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 60 [2025-03-17 14:31:29,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 335 transitions, 3710 flow. Second operand has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:31:29,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:29,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 60 [2025-03-17 14:31:29,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:31,904 INFO L124 PetriNetUnfolderBase]: 8021/14373 cut-off events. [2025-03-17 14:31:31,905 INFO L125 PetriNetUnfolderBase]: For 473941/474229 co-relation queries the response was YES. [2025-03-17 14:31:32,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77830 conditions, 14373 events. 8021/14373 cut-off events. For 473941/474229 co-relation queries the response was YES. Maximal size of possible extension queue 1252. Compared 121288 event pairs, 4876 based on Foata normal form. 292/14230 useless extension candidates. Maximal degree in co-relation 77297. Up to 6516 conditions per place. [2025-03-17 14:31:32,159 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 559 selfloop transitions, 14 changer transitions 12/629 dead transitions. [2025-03-17 14:31:32,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 629 transitions, 8248 flow [2025-03-17 14:31:32,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 14:31:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 14:31:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2025-03-17 14:31:32,160 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2025-03-17 14:31:32,160 INFO L175 Difference]: Start difference. First operand has 361 places, 335 transitions, 3710 flow. Second operand 8 states and 188 transitions. [2025-03-17 14:31:32,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 629 transitions, 8248 flow [2025-03-17 14:31:33,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 629 transitions, 8116 flow, removed 2 selfloop flow, removed 8 redundant places. [2025-03-17 14:31:33,499 INFO L231 Difference]: Finished difference. Result has 364 places, 343 transitions, 3737 flow [2025-03-17 14:31:33,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3737, PETRI_PLACES=364, PETRI_TRANSITIONS=343} [2025-03-17 14:31:33,499 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 305 predicate places. [2025-03-17 14:31:33,499 INFO L471 AbstractCegarLoop]: Abstraction has has 364 places, 343 transitions, 3737 flow [2025-03-17 14:31:33,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:31:33,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:33,500 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:33,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 14:31:33,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2025-03-17 14:31:33,700 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:33,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:33,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2144273931, now seen corresponding path program 1 times [2025-03-17 14:31:33,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:33,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703767974] [2025-03-17 14:31:33,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:31:33,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:33,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 14:31:33,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 14:31:33,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:31:33,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 14:31:33,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:33,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703767974] [2025-03-17 14:31:33,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703767974] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:31:33,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:31:33,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:31:33,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053860854] [2025-03-17 14:31:33,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:31:33,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:31:33,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:33,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:31:33,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:31:33,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 60 [2025-03-17 14:31:33,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 343 transitions, 3737 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2025-03-17 14:31:33,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:33,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 60 [2025-03-17 14:31:33,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:36,332 INFO L124 PetriNetUnfolderBase]: 8662/15786 cut-off events. [2025-03-17 14:31:36,332 INFO L125 PetriNetUnfolderBase]: For 679230/681084 co-relation queries the response was YES. [2025-03-17 14:31:36,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89548 conditions, 15786 events. 8662/15786 cut-off events. For 679230/681084 co-relation queries the response was YES. Maximal size of possible extension queue 1341. Compared 137891 event pairs, 3212 based on Foata normal form. 898/16223 useless extension candidates. Maximal degree in co-relation 88760. Up to 6932 conditions per place. [2025-03-17 14:31:36,535 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 454 selfloop transitions, 34 changer transitions 0/532 dead transitions. [2025-03-17 14:31:36,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 532 transitions, 7112 flow [2025-03-17 14:31:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:31:36,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:31:36,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2025-03-17 14:31:36,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-03-17 14:31:36,536 INFO L175 Difference]: Start difference. First operand has 364 places, 343 transitions, 3737 flow. Second operand 4 states and 128 transitions. [2025-03-17 14:31:36,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 532 transitions, 7112 flow [2025-03-17 14:31:37,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 532 transitions, 7097 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-03-17 14:31:37,711 INFO L231 Difference]: Finished difference. Result has 367 places, 354 transitions, 4105 flow [2025-03-17 14:31:37,711 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3670, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4105, PETRI_PLACES=367, PETRI_TRANSITIONS=354} [2025-03-17 14:31:37,711 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 308 predicate places. [2025-03-17 14:31:37,711 INFO L471 AbstractCegarLoop]: Abstraction has has 367 places, 354 transitions, 4105 flow [2025-03-17 14:31:37,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2025-03-17 14:31:37,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:37,712 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:37,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2025-03-17 14:31:37,712 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-03-17 14:31:37,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:31:37,713 INFO L85 PathProgramCache]: Analyzing trace with hash 756101440, now seen corresponding path program 1 times [2025-03-17 14:31:37,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:31:37,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425386004] [2025-03-17 14:31:37,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:31:37,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:31:37,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 14:31:37,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 14:31:37,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:31:37,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:31:37,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:31:37,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425386004] [2025-03-17 14:31:37,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425386004] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:31:37,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348432703] [2025-03-17 14:31:37,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:31:37,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:31:37,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:31:37,903 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:31:37,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 14:31:37,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 14:31:37,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 14:31:37,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:31:37,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:31:37,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 14:31:37,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:31:38,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:31:38,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:31:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:31:38,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348432703] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:31:38,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:31:38,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2025-03-17 14:31:38,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223760498] [2025-03-17 14:31:38,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:31:38,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 14:31:38,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:31:38,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 14:31:38,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-03-17 14:31:38,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 60 [2025-03-17 14:31:38,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 354 transitions, 4105 flow. Second operand has 13 states, 13 states have (on average 18.53846153846154) internal successors, (241), 13 states have internal predecessors, (241), 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) [2025-03-17 14:31:38,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:31:38,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 60 [2025-03-17 14:31:38,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:31:40,599 INFO L124 PetriNetUnfolderBase]: 6133/11677 cut-off events. [2025-03-17 14:31:40,599 INFO L125 PetriNetUnfolderBase]: For 459368/460374 co-relation queries the response was YES. [2025-03-17 14:31:40,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67382 conditions, 11677 events. 6133/11677 cut-off events. For 459368/460374 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 101563 event pairs, 2907 based on Foata normal form. 438/11697 useless extension candidates. Maximal degree in co-relation 66858. Up to 7765 conditions per place. [2025-03-17 14:31:40,736 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 301 selfloop transitions, 11 changer transitions 131/487 dead transitions. [2025-03-17 14:31:40,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 487 transitions, 6579 flow [2025-03-17 14:31:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 14:31:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 14:31:40,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2025-03-17 14:31:40,737 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37833333333333335 [2025-03-17 14:31:40,737 INFO L175 Difference]: Start difference. First operand has 367 places, 354 transitions, 4105 flow. Second operand 10 states and 227 transitions. [2025-03-17 14:31:40,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 487 transitions, 6579 flow [2025-03-17 14:31:41,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 487 transitions, 6431 flow, removed 50 selfloop flow, removed 6 redundant places. [2025-03-17 14:31:41,853 INFO L231 Difference]: Finished difference. Result has 372 places, 348 transitions, 3977 flow [2025-03-17 14:31:41,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3995, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3977, PETRI_PLACES=372, PETRI_TRANSITIONS=348} [2025-03-17 14:31:41,853 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 313 predicate places. [2025-03-17 14:31:41,853 INFO L471 AbstractCegarLoop]: Abstraction has has 372 places, 348 transitions, 3977 flow [2025-03-17 14:31:41,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.53846153846154) internal successors, (241), 13 states have internal predecessors, (241), 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) [2025-03-17 14:31:41,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:31:41,854 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:31:41,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0