./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 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-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 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:52:11,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:52:11,747 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:52:11,752 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:52:11,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:52:11,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:52:11,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:52:11,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:52:11,786 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:52:11,787 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:52:11,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:52:11,788 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:52:11,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:52:11,791 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:52:11,791 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:52:11,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:52:11,792 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:52:11,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:52:11,792 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:52:11,792 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:52:11,793 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:52:11,795 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:52:11,796 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:52:11,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:52:11,796 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:52:11,796 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:52:11,796 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:52:11,797 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:52:11,797 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:52:11,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:52:11,798 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:52:11,798 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:52:11,799 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:52:11,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:52:11,799 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:52:11,800 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:52:11,800 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:52:11,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:52:11,800 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:52:11,800 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:52:11,800 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:52:11,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:52:11,801 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-19 09:52:12,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:52:12,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:52:12,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:52:12,063 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:52:12,063 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:52:12,064 INFO L431 ainManager$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 [2024-11-19 09:52:13,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:52:13,767 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:52:13,768 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-19 09:52:13,776 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72d6fbf0/a06fc9451b6045d9b16e7b580456d720/FLAGa173ac7ce [2024-11-19 09:52:14,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72d6fbf0/a06fc9451b6045d9b16e7b580456d720 [2024-11-19 09:52:14,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:52:14,137 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:52:14,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:52:14,138 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:52:14,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:52:14,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4adb319c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14, skipping insertion in model container [2024-11-19 09:52:14,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,174 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:52:14,417 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 09:52:14,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:52:14,433 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:52:14,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:52:14,479 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:52:14,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14 WrapperNode [2024-11-19 09:52:14,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:52:14,480 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:52:14,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:52:14,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:52:14,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,526 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 254 [2024-11-19 09:52:14,526 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:52:14,527 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:52:14,527 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:52:14,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:52:14,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,541 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,562 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]. [2024-11-19 09:52:14,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:52:14,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:52:14,617 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:52:14,617 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:52:14,618 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14" (1/1) ... [2024-11-19 09:52:14,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:52:14,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:14,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:52:14,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:52:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:52:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:52:14,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:52:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:52:14,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:52:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 09:52:14,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 09:52:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:52:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:52:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:52:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:52:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:52:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:52:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 09:52:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:52:14,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:52:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:52:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:52:14,695 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:52:14,788 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:52:14,790 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:52:15,246 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:52:15,247 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:52:15,573 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:52:15,574 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-19 09:52:15,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:52:15 BoogieIcfgContainer [2024-11-19 09:52:15,575 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:52:15,577 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:52:15,577 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:52:15,580 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:52:15,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:52:14" (1/3) ... [2024-11-19 09:52:15,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47add9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:52:15, skipping insertion in model container [2024-11-19 09:52:15,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:52:14" (2/3) ... [2024-11-19 09:52:15,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47add9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:52:15, skipping insertion in model container [2024-11-19 09:52:15,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:52:15" (3/3) ... [2024-11-19 09:52:15,583 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-19 09:52:15,601 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:52:15,601 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-19 09:52:15,601 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:52:15,668 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 09:52:15,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 145 flow [2024-11-19 09:52:15,742 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2024-11-19 09:52:15,743 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 09:52:15,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 7/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 149 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-19 09:52:15,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 62 transitions, 145 flow [2024-11-19 09:52:15,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 134 flow [2024-11-19 09:52:15,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:52:15,772 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;@18090d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:52:15,772 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-19 09:52:15,776 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:52:15,776 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-19 09:52:15,777 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:52:15,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:15,777 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:52:15,778 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:15,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:15,787 INFO L85 PathProgramCache]: Analyzing trace with hash 759561, now seen corresponding path program 1 times [2024-11-19 09:52:15,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:15,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27815409] [2024-11-19 09:52:15,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:15,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:16,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:16,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27815409] [2024-11-19 09:52:16,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27815409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:16,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:16,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:52:16,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047015615] [2024-11-19 09:52:16,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:16,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:52:16,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:16,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:52:16,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:52:16,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:52:16,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:16,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:16,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:52:16,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:16,914 INFO L124 PetriNetUnfolderBase]: 4012/6158 cut-off events. [2024-11-19 09:52:16,915 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-19 09:52:16,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11859 conditions, 6158 events. 4012/6158 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37744 event pairs, 3528 based on Foata normal form. 379/4445 useless extension candidates. Maximal degree in co-relation 11339. Up to 5391 conditions per place. [2024-11-19 09:52:16,971 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 40 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-11-19 09:52:16,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 206 flow [2024-11-19 09:52:16,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:52:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:52:16,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-19 09:52:16,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-11-19 09:52:16,986 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 134 flow. Second operand 3 states and 89 transitions. [2024-11-19 09:52:16,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 206 flow [2024-11-19 09:52:16,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 194 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 09:52:17,001 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 114 flow [2024-11-19 09:52:17,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-11-19 09:52:17,010 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2024-11-19 09:52:17,011 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 114 flow [2024-11-19 09:52:17,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:17,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:17,011 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:52:17,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:52:17,012 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:17,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:17,013 INFO L85 PathProgramCache]: Analyzing trace with hash 759562, now seen corresponding path program 1 times [2024-11-19 09:52:17,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:17,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786575930] [2024-11-19 09:52:17,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:17,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:17,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:17,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786575930] [2024-11-19 09:52:17,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786575930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:17,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:17,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:52:17,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980871764] [2024-11-19 09:52:17,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:17,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:52:17,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:17,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:52:17,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:52:17,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:52:17,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:17,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:17,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:52:17,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:18,087 INFO L124 PetriNetUnfolderBase]: 4013/6161 cut-off events. [2024-11-19 09:52:18,088 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-19 09:52:18,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11678 conditions, 6161 events. 4013/6161 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37750 event pairs, 3528 based on Foata normal form. 0/4067 useless extension candidates. Maximal degree in co-relation 11649. Up to 5400 conditions per place. [2024-11-19 09:52:18,129 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-19 09:52:18,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 214 flow [2024-11-19 09:52:18,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:52:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:52:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-19 09:52:18,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-11-19 09:52:18,133 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 114 flow. Second operand 4 states and 104 transitions. [2024-11-19 09:52:18,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 214 flow [2024-11-19 09:52:18,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:18,136 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 137 flow [2024-11-19 09:52:18,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2024-11-19 09:52:18,137 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-11-19 09:52:18,137 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 137 flow [2024-11-19 09:52:18,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:18,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:18,138 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 09:52:18,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:52:18,138 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:18,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:18,140 INFO L85 PathProgramCache]: Analyzing trace with hash 23547245, now seen corresponding path program 1 times [2024-11-19 09:52:18,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:18,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244752822] [2024-11-19 09:52:18,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:18,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:18,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:18,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244752822] [2024-11-19 09:52:18,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244752822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:18,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:18,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:52:18,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847279472] [2024-11-19 09:52:18,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:18,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:52:18,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:18,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:52:18,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:52:18,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:52:18,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:18,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:18,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:52:18,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:18,960 INFO L124 PetriNetUnfolderBase]: 4014/6164 cut-off events. [2024-11-19 09:52:18,961 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-19 09:52:18,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11695 conditions, 6164 events. 4014/6164 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37794 event pairs, 3528 based on Foata normal form. 0/4069 useless extension candidates. Maximal degree in co-relation 11670. Up to 5399 conditions per place. [2024-11-19 09:52:19,005 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 43 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-11-19 09:52:19,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 243 flow [2024-11-19 09:52:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:52:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:52:19,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-19 09:52:19,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-11-19 09:52:19,010 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 137 flow. Second operand 5 states and 121 transitions. [2024-11-19 09:52:19,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 243 flow [2024-11-19 09:52:19,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:52:19,013 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 171 flow [2024-11-19 09:52:19,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-11-19 09:52:19,014 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-19 09:52:19,015 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 171 flow [2024-11-19 09:52:19,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:19,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:19,016 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-19 09:52:19,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:52:19,016 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:19,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:19,017 INFO L85 PathProgramCache]: Analyzing trace with hash 729963479, now seen corresponding path program 1 times [2024-11-19 09:52:19,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:19,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022707944] [2024-11-19 09:52:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:19,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:19,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:19,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022707944] [2024-11-19 09:52:19,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022707944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:52:19,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540135692] [2024-11-19 09:52:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:19,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:19,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:19,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:52:19,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:52:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:19,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 09:52:19,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:52:19,476 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 [2024-11-19 09:52:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:19,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:52:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:19,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540135692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:52:19,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:52:19,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-19 09:52:19,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40331668] [2024-11-19 09:52:19,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:52:19,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:19,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:19,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:19,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:19,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:52:19,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 171 flow. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:19,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:19,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:52:19,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:20,832 INFO L124 PetriNetUnfolderBase]: 4015/6166 cut-off events. [2024-11-19 09:52:20,833 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-19 09:52:20,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11718 conditions, 6166 events. 4015/6166 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37749 event pairs, 3528 based on Foata normal form. 0/4074 useless extension candidates. Maximal degree in co-relation 11680. Up to 5399 conditions per place. [2024-11-19 09:52:20,867 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 41 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2024-11-19 09:52:20,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 60 transitions, 286 flow [2024-11-19 09:52:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:52:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:52:20,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-11-19 09:52:20,870 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-11-19 09:52:20,870 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 171 flow. Second operand 9 states and 177 transitions. [2024-11-19 09:52:20,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 60 transitions, 286 flow [2024-11-19 09:52:20,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:52:20,872 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 203 flow [2024-11-19 09:52:20,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=203, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-11-19 09:52:20,873 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2024-11-19 09:52:20,874 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 203 flow [2024-11-19 09:52:20,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:20,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:20,874 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 09:52:20,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 09:52:21,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:21,079 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:21,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1154089852, now seen corresponding path program 1 times [2024-11-19 09:52:21,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:21,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662774754] [2024-11-19 09:52:21,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:21,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:21,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:21,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662774754] [2024-11-19 09:52:21,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662774754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:52:21,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441234187] [2024-11-19 09:52:21,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:21,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:21,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:21,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:52:21,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:52:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:21,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:52:21,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:52:21,390 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 [2024-11-19 09:52:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:21,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:52:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:21,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441234187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:52:21,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:52:21,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-19 09:52:21,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306433732] [2024-11-19 09:52:21,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:52:21,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:52:21,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:21,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:52:21,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:52:21,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:52:21,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 203 flow. Second operand has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:21,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:21,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:52:21,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:22,415 INFO L124 PetriNetUnfolderBase]: 4016/6168 cut-off events. [2024-11-19 09:52:22,415 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-19 09:52:22,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11734 conditions, 6168 events. 4016/6168 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37825 event pairs, 3528 based on Foata normal form. 2/4078 useless extension candidates. Maximal degree in co-relation 11688. Up to 5392 conditions per place. [2024-11-19 09:52:22,460 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 36 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2024-11-19 09:52:22,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 317 flow [2024-11-19 09:52:22,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:52:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:52:22,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-11-19 09:52:22,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-11-19 09:52:22,463 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 203 flow. Second operand 9 states and 182 transitions. [2024-11-19 09:52:22,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 317 flow [2024-11-19 09:52:22,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 270 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-19 09:52:22,465 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 198 flow [2024-11-19 09:52:22,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-11-19 09:52:22,466 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-11-19 09:52:22,467 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 198 flow [2024-11-19 09:52:22,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:22,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:22,467 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:22,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:52:22,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:22,670 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:22,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:22,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1420350188, now seen corresponding path program 1 times [2024-11-19 09:52:22,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:22,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630958352] [2024-11-19 09:52:22,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:22,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:22,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:22,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630958352] [2024-11-19 09:52:22,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630958352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:22,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:22,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:52:22,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918753579] [2024-11-19 09:52:22,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:22,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:52:22,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:22,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:52:22,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:52:22,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-19 09:52:22,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:22,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:22,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-19 09:52:22,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:23,244 INFO L124 PetriNetUnfolderBase]: 4177/6469 cut-off events. [2024-11-19 09:52:23,245 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-19 09:52:23,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12314 conditions, 6469 events. 4177/6469 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 39384 event pairs, 3675 based on Foata normal form. 112/4483 useless extension candidates. Maximal degree in co-relation 11673. Up to 5406 conditions per place. [2024-11-19 09:52:23,285 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 74 selfloop transitions, 3 changer transitions 1/86 dead transitions. [2024-11-19 09:52:23,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 443 flow [2024-11-19 09:52:23,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:52:23,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:52:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-19 09:52:23,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-19 09:52:23,288 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 198 flow. Second operand 4 states and 136 transitions. [2024-11-19 09:52:23,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 443 flow [2024-11-19 09:52:23,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 390 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-19 09:52:23,292 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 190 flow [2024-11-19 09:52:23,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-11-19 09:52:23,293 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-19 09:52:23,295 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 190 flow [2024-11-19 09:52:23,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:23,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:23,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:23,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:52:23,296 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:23,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:23,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1436128967, now seen corresponding path program 1 times [2024-11-19 09:52:23,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:23,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211093647] [2024-11-19 09:52:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:23,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:23,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:23,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211093647] [2024-11-19 09:52:23,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211093647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:23,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:23,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:52:23,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702674493] [2024-11-19 09:52:23,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:23,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:52:23,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:23,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:52:23,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:52:23,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:52:23,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:23,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:23,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:52:23,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:24,071 INFO L124 PetriNetUnfolderBase]: 3028/4665 cut-off events. [2024-11-19 09:52:24,072 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2024-11-19 09:52:24,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9830 conditions, 4665 events. 3028/4665 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 26635 event pairs, 2670 based on Foata normal form. 0/3354 useless extension candidates. Maximal degree in co-relation 9234. Up to 4179 conditions per place. [2024-11-19 09:52:24,103 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 47 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-11-19 09:52:24,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 280 flow [2024-11-19 09:52:24,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:52:24,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:52:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-19 09:52:24,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-11-19 09:52:24,105 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 190 flow. Second operand 4 states and 98 transitions. [2024-11-19 09:52:24,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 280 flow [2024-11-19 09:52:24,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:24,109 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 181 flow [2024-11-19 09:52:24,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-11-19 09:52:24,111 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-19 09:52:24,111 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 181 flow [2024-11-19 09:52:24,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:24,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:24,112 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:24,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:52:24,112 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:24,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1436128968, now seen corresponding path program 1 times [2024-11-19 09:52:24,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:24,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333398537] [2024-11-19 09:52:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:24,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:24,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:24,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333398537] [2024-11-19 09:52:24,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333398537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:24,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:24,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:52:24,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982311104] [2024-11-19 09:52:24,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:24,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:52:24,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:24,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:52:24,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:52:24,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:52:24,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:24,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:24,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:52:24,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:24,584 INFO L124 PetriNetUnfolderBase]: 2095/3259 cut-off events. [2024-11-19 09:52:24,584 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-11-19 09:52:24,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6641 conditions, 3259 events. 2095/3259 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17152 event pairs, 1813 based on Foata normal form. 0/2622 useless extension candidates. Maximal degree in co-relation 6025. Up to 2896 conditions per place. [2024-11-19 09:52:24,604 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 41 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-11-19 09:52:24,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 265 flow [2024-11-19 09:52:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:52:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:52:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-19 09:52:24,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-11-19 09:52:24,607 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 181 flow. Second operand 5 states and 109 transitions. [2024-11-19 09:52:24,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 265 flow [2024-11-19 09:52:24,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:24,609 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 178 flow [2024-11-19 09:52:24,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-11-19 09:52:24,609 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-19 09:52:24,610 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 178 flow [2024-11-19 09:52:24,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:24,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:24,610 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:24,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:52:24,611 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:24,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:24,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2069279750, now seen corresponding path program 1 times [2024-11-19 09:52:24,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:24,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233599751] [2024-11-19 09:52:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:24,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:52:24,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:24,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233599751] [2024-11-19 09:52:24,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233599751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:24,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:24,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:52:24,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969510934] [2024-11-19 09:52:24,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:24,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:52:24,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:24,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:52:24,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:52:24,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-19 09:52:24,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:24,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:24,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-19 09:52:24,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:24,959 INFO L124 PetriNetUnfolderBase]: 1937/3073 cut-off events. [2024-11-19 09:52:24,959 INFO L125 PetriNetUnfolderBase]: For 424/424 co-relation queries the response was YES. [2024-11-19 09:52:24,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6348 conditions, 3073 events. 1937/3073 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15635 event pairs, 695 based on Foata normal form. 71/2583 useless extension candidates. Maximal degree in co-relation 6070. Up to 2082 conditions per place. [2024-11-19 09:52:24,977 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 60 selfloop transitions, 2 changer transitions 1/71 dead transitions. [2024-11-19 09:52:24,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 342 flow [2024-11-19 09:52:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:52:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:52:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-19 09:52:24,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-19 09:52:24,979 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 178 flow. Second operand 3 states and 102 transitions. [2024-11-19 09:52:24,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 342 flow [2024-11-19 09:52:24,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 331 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:52:24,981 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 178 flow [2024-11-19 09:52:24,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-11-19 09:52:24,982 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-19 09:52:24,983 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 178 flow [2024-11-19 09:52:24,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:24,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:24,983 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:24,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:52:24,984 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:24,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:24,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2085322483, now seen corresponding path program 1 times [2024-11-19 09:52:24,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:24,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369841713] [2024-11-19 09:52:24,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:24,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:25,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:25,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369841713] [2024-11-19 09:52:25,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369841713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:25,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:25,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:52:25,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102056167] [2024-11-19 09:52:25,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:25,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:52:25,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:52:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:52:25,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-19 09:52:25,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:25,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:25,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-19 09:52:25,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:25,260 INFO L124 PetriNetUnfolderBase]: 1665/2611 cut-off events. [2024-11-19 09:52:25,261 INFO L125 PetriNetUnfolderBase]: For 507/512 co-relation queries the response was YES. [2024-11-19 09:52:25,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5820 conditions, 2611 events. 1665/2611 cut-off events. For 507/512 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12397 event pairs, 717 based on Foata normal form. 15/2267 useless extension candidates. Maximal degree in co-relation 5785. Up to 2249 conditions per place. [2024-11-19 09:52:25,275 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 55 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-19 09:52:25,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 320 flow [2024-11-19 09:52:25,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:52:25,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:52:25,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-19 09:52:25,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2024-11-19 09:52:25,277 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 178 flow. Second operand 3 states and 95 transitions. [2024-11-19 09:52:25,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 320 flow [2024-11-19 09:52:25,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:52:25,281 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 199 flow [2024-11-19 09:52:25,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-19 09:52:25,282 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-19 09:52:25,282 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 199 flow [2024-11-19 09:52:25,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:25,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:25,282 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:25,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:52:25,283 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:25,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:25,283 INFO L85 PathProgramCache]: Analyzing trace with hash 372111769, now seen corresponding path program 1 times [2024-11-19 09:52:25,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:25,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533212089] [2024-11-19 09:52:25,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:25,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:25,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:25,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533212089] [2024-11-19 09:52:25,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533212089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:25,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:25,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:52:25,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852966600] [2024-11-19 09:52:25,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:25,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:52:25,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:25,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:52:25,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:52:25,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-19 09:52:25,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:25,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:25,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-19 09:52:25,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:25,729 INFO L124 PetriNetUnfolderBase]: 1906/3090 cut-off events. [2024-11-19 09:52:25,730 INFO L125 PetriNetUnfolderBase]: For 1627/1627 co-relation queries the response was YES. [2024-11-19 09:52:25,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7348 conditions, 3090 events. 1906/3090 cut-off events. For 1627/1627 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 15481 event pairs, 1453 based on Foata normal form. 64/2789 useless extension candidates. Maximal degree in co-relation 7311. Up to 2352 conditions per place. [2024-11-19 09:52:25,744 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 46 selfloop transitions, 3 changer transitions 19/76 dead transitions. [2024-11-19 09:52:25,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 397 flow [2024-11-19 09:52:25,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:52:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:52:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-19 09:52:25,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49193548387096775 [2024-11-19 09:52:25,746 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 199 flow. Second operand 4 states and 122 transitions. [2024-11-19 09:52:25,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 397 flow [2024-11-19 09:52:25,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 372 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:25,750 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 193 flow [2024-11-19 09:52:25,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-11-19 09:52:25,750 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-19 09:52:25,750 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 193 flow [2024-11-19 09:52:25,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:25,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:25,751 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:25,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:52:25,751 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:25,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:25,751 INFO L85 PathProgramCache]: Analyzing trace with hash 699230762, now seen corresponding path program 1 times [2024-11-19 09:52:25,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:25,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777393148] [2024-11-19 09:52:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:25,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:25,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:25,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777393148] [2024-11-19 09:52:25,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777393148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:52:25,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641325817] [2024-11-19 09:52:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:25,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:25,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:52:25,973 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:52:25,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:52:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:26,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 09:52:26,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:52:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:26,159 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:52:26,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641325817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:26,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:52:26,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-19 09:52:26,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647319330] [2024-11-19 09:52:26,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:26,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:52:26,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:26,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:52:26,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:52:26,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-19 09:52:26,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:26,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:26,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-19 09:52:26,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:26,377 INFO L124 PetriNetUnfolderBase]: 1256/2044 cut-off events. [2024-11-19 09:52:26,377 INFO L125 PetriNetUnfolderBase]: For 577/577 co-relation queries the response was YES. [2024-11-19 09:52:26,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4606 conditions, 2044 events. 1256/2044 cut-off events. For 577/577 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9674 event pairs, 929 based on Foata normal form. 0/1890 useless extension candidates. Maximal degree in co-relation 4567. Up to 1767 conditions per place. [2024-11-19 09:52:26,389 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-19 09:52:26,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 279 flow [2024-11-19 09:52:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:52:26,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:52:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-19 09:52:26,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-11-19 09:52:26,390 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 193 flow. Second operand 4 states and 100 transitions. [2024-11-19 09:52:26,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 279 flow [2024-11-19 09:52:26,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 272 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:26,392 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 186 flow [2024-11-19 09:52:26,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-11-19 09:52:26,393 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-19 09:52:26,393 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 186 flow [2024-11-19 09:52:26,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:26,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:26,394 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:26,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 09:52:26,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:52:26,599 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:26,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:26,599 INFO L85 PathProgramCache]: Analyzing trace with hash 699230761, now seen corresponding path program 1 times [2024-11-19 09:52:26,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:26,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128812348] [2024-11-19 09:52:26,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:26,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:52:26,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:26,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128812348] [2024-11-19 09:52:26,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128812348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:26,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:26,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:52:26,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712918488] [2024-11-19 09:52:26,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:26,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:52:26,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:26,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:52:26,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:52:26,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:52:26,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:26,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:26,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:52:26,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:26,809 INFO L124 PetriNetUnfolderBase]: 902/1526 cut-off events. [2024-11-19 09:52:26,809 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2024-11-19 09:52:26,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3299 conditions, 1526 events. 902/1526 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7086 event pairs, 653 based on Foata normal form. 97/1538 useless extension candidates. Maximal degree in co-relation 3259. Up to 1271 conditions per place. [2024-11-19 09:52:26,817 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 42 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-19 09:52:26,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 270 flow [2024-11-19 09:52:26,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:52:26,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:52:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-11-19 09:52:26,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-11-19 09:52:26,819 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 186 flow. Second operand 4 states and 90 transitions. [2024-11-19 09:52:26,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 270 flow [2024-11-19 09:52:26,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:26,820 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 180 flow [2024-11-19 09:52:26,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-11-19 09:52:26,821 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-19 09:52:26,821 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 180 flow [2024-11-19 09:52:26,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:26,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:26,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:26,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 09:52:26,822 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:26,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash -68022964, now seen corresponding path program 1 times [2024-11-19 09:52:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:26,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810568374] [2024-11-19 09:52:26,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:52:26,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:27,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:27,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810568374] [2024-11-19 09:52:27,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810568374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:27,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:27,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:27,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672579233] [2024-11-19 09:52:27,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:27,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:27,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:27,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:27,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:27,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:27,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 180 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:27,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:27,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:27,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:28,197 INFO L124 PetriNetUnfolderBase]: 1304/2220 cut-off events. [2024-11-19 09:52:28,197 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-11-19 09:52:28,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4813 conditions, 2220 events. 1304/2220 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11720 event pairs, 135 based on Foata normal form. 1/2156 useless extension candidates. Maximal degree in co-relation 4774. Up to 1406 conditions per place. [2024-11-19 09:52:28,208 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 108 selfloop transitions, 26 changer transitions 3/144 dead transitions. [2024-11-19 09:52:28,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 144 transitions, 701 flow [2024-11-19 09:52:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:52:28,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:52:28,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2024-11-19 09:52:28,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41263440860215056 [2024-11-19 09:52:28,211 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 180 flow. Second operand 12 states and 307 transitions. [2024-11-19 09:52:28,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 144 transitions, 701 flow [2024-11-19 09:52:28,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 144 transitions, 697 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:28,213 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 314 flow [2024-11-19 09:52:28,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=314, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-11-19 09:52:28,214 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2024-11-19 09:52:28,214 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 314 flow [2024-11-19 09:52:28,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:28,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:28,215 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:28,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:52:28,215 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:28,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:28,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2086380966, now seen corresponding path program 2 times [2024-11-19 09:52:28,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:28,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535295270] [2024-11-19 09:52:28,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:52:28,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:28,244 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:52:28,244 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:28,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:28,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535295270] [2024-11-19 09:52:28,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535295270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:28,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:28,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:28,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545574530] [2024-11-19 09:52:28,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:28,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:28,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:28,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:28,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:29,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:29,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 314 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:29,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:29,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:29,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:29,618 INFO L124 PetriNetUnfolderBase]: 1474/2573 cut-off events. [2024-11-19 09:52:29,618 INFO L125 PetriNetUnfolderBase]: For 1567/1567 co-relation queries the response was YES. [2024-11-19 09:52:29,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6732 conditions, 2573 events. 1474/2573 cut-off events. For 1567/1567 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14243 event pairs, 373 based on Foata normal form. 1/2495 useless extension candidates. Maximal degree in co-relation 6688. Up to 1741 conditions per place. [2024-11-19 09:52:29,630 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 107 selfloop transitions, 34 changer transitions 3/151 dead transitions. [2024-11-19 09:52:29,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 151 transitions, 889 flow [2024-11-19 09:52:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-19 09:52:29,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2024-11-19 09:52:29,633 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 314 flow. Second operand 11 states and 281 transitions. [2024-11-19 09:52:29,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 151 transitions, 889 flow [2024-11-19 09:52:29,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 882 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:29,637 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 539 flow [2024-11-19 09:52:29,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=539, PETRI_PLACES=90, PETRI_TRANSITIONS=96} [2024-11-19 09:52:29,638 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2024-11-19 09:52:29,638 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 539 flow [2024-11-19 09:52:29,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:29,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:29,638 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:29,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 09:52:29,639 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:29,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1511651402, now seen corresponding path program 3 times [2024-11-19 09:52:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:29,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964091631] [2024-11-19 09:52:29,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:52:29,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:29,666 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:52:29,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:30,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:30,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964091631] [2024-11-19 09:52:30,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964091631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:30,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:30,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:30,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129192859] [2024-11-19 09:52:30,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:30,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:30,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:30,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:30,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:30,328 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:30,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 539 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:30,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:30,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:30,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:30,994 INFO L124 PetriNetUnfolderBase]: 1641/2889 cut-off events. [2024-11-19 09:52:30,994 INFO L125 PetriNetUnfolderBase]: For 3634/3646 co-relation queries the response was YES. [2024-11-19 09:52:31,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8524 conditions, 2889 events. 1641/2889 cut-off events. For 3634/3646 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16848 event pairs, 292 based on Foata normal form. 4/2796 useless extension candidates. Maximal degree in co-relation 8472. Up to 1750 conditions per place. [2024-11-19 09:52:31,016 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 122 selfloop transitions, 44 changer transitions 3/176 dead transitions. [2024-11-19 09:52:31,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 176 transitions, 1184 flow [2024-11-19 09:52:31,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:52:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:52:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 311 transitions. [2024-11-19 09:52:31,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41801075268817206 [2024-11-19 09:52:31,018 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 539 flow. Second operand 12 states and 311 transitions. [2024-11-19 09:52:31,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 176 transitions, 1184 flow [2024-11-19 09:52:31,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 176 transitions, 1165 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-19 09:52:31,034 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 692 flow [2024-11-19 09:52:31,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=692, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2024-11-19 09:52:31,035 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2024-11-19 09:52:31,036 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 692 flow [2024-11-19 09:52:31,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:31,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:31,036 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:31,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 09:52:31,037 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:31,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:31,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1990466488, now seen corresponding path program 4 times [2024-11-19 09:52:31,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:31,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052508399] [2024-11-19 09:52:31,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:52:31,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:31,081 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:52:31,081 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:31,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:31,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052508399] [2024-11-19 09:52:31,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052508399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:31,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:31,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:31,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673922375] [2024-11-19 09:52:31,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:31,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:31,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:31,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:31,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:31,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:52:31,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 692 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:31,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:31,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:52:31,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:32,519 INFO L124 PetriNetUnfolderBase]: 1943/3407 cut-off events. [2024-11-19 09:52:32,519 INFO L125 PetriNetUnfolderBase]: For 6196/6208 co-relation queries the response was YES. [2024-11-19 09:52:32,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10674 conditions, 3407 events. 1943/3407 cut-off events. For 6196/6208 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 20388 event pairs, 488 based on Foata normal form. 4/3294 useless extension candidates. Maximal degree in co-relation 10618. Up to 2329 conditions per place. [2024-11-19 09:52:32,541 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 131 selfloop transitions, 40 changer transitions 3/180 dead transitions. [2024-11-19 09:52:32,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 180 transitions, 1349 flow [2024-11-19 09:52:32,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:52:32,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:52:32,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 297 transitions. [2024-11-19 09:52:32,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-11-19 09:52:32,543 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 692 flow. Second operand 12 states and 297 transitions. [2024-11-19 09:52:32,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 180 transitions, 1349 flow [2024-11-19 09:52:32,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 180 transitions, 1273 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-11-19 09:52:32,557 INFO L231 Difference]: Finished difference. Result has 111 places, 111 transitions, 771 flow [2024-11-19 09:52:32,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=97, 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=771, PETRI_PLACES=111, PETRI_TRANSITIONS=111} [2024-11-19 09:52:32,557 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 50 predicate places. [2024-11-19 09:52:32,558 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 111 transitions, 771 flow [2024-11-19 09:52:32,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:32,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:32,558 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:32,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 09:52:32,558 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:32,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:32,559 INFO L85 PathProgramCache]: Analyzing trace with hash 866501786, now seen corresponding path program 5 times [2024-11-19 09:52:32,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:32,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940055026] [2024-11-19 09:52:32,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:52:32,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:32,584 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:52:32,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:33,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:33,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940055026] [2024-11-19 09:52:33,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940055026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:33,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:33,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:33,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223668411] [2024-11-19 09:52:33,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:33,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:33,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:33,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:33,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:33,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 111 transitions, 771 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:33,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:33,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:33,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:33,877 INFO L124 PetriNetUnfolderBase]: 1745/3109 cut-off events. [2024-11-19 09:52:33,880 INFO L125 PetriNetUnfolderBase]: For 7577/7601 co-relation queries the response was YES. [2024-11-19 09:52:33,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10254 conditions, 3109 events. 1745/3109 cut-off events. For 7577/7601 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18661 event pairs, 410 based on Foata normal form. 16/3015 useless extension candidates. Maximal degree in co-relation 10194. Up to 2171 conditions per place. [2024-11-19 09:52:33,899 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 125 selfloop transitions, 39 changer transitions 3/174 dead transitions. [2024-11-19 09:52:33,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 174 transitions, 1375 flow [2024-11-19 09:52:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:52:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:52:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 298 transitions. [2024-11-19 09:52:33,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-11-19 09:52:33,902 INFO L175 Difference]: Start difference. First operand has 111 places, 111 transitions, 771 flow. Second operand 12 states and 298 transitions. [2024-11-19 09:52:33,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 174 transitions, 1375 flow [2024-11-19 09:52:33,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 174 transitions, 1281 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-19 09:52:33,919 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 800 flow [2024-11-19 09:52:33,920 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=800, PETRI_PLACES=117, PETRI_TRANSITIONS=114} [2024-11-19 09:52:33,920 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 56 predicate places. [2024-11-19 09:52:33,920 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 800 flow [2024-11-19 09:52:33,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:33,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:33,921 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:33,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 09:52:33,921 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:33,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash 213937972, now seen corresponding path program 6 times [2024-11-19 09:52:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:33,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886640565] [2024-11-19 09:52:33,922 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:52:33,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:33,956 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 09:52:33,957 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:34,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:34,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886640565] [2024-11-19 09:52:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886640565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:34,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:34,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:34,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625068031] [2024-11-19 09:52:34,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:34,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:34,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:34,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:34,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:34,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:34,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 114 transitions, 800 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:34,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:34,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:34,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:35,088 INFO L124 PetriNetUnfolderBase]: 1867/3349 cut-off events. [2024-11-19 09:52:35,088 INFO L125 PetriNetUnfolderBase]: For 8357/8381 co-relation queries the response was YES. [2024-11-19 09:52:35,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11107 conditions, 3349 events. 1867/3349 cut-off events. For 8357/8381 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20501 event pairs, 614 based on Foata normal form. 7/3232 useless extension candidates. Maximal degree in co-relation 11044. Up to 2438 conditions per place. [2024-11-19 09:52:35,108 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 132 selfloop transitions, 37 changer transitions 3/179 dead transitions. [2024-11-19 09:52:35,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 179 transitions, 1499 flow [2024-11-19 09:52:35,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-11-19 09:52:35,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-11-19 09:52:35,110 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 800 flow. Second operand 11 states and 280 transitions. [2024-11-19 09:52:35,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 179 transitions, 1499 flow [2024-11-19 09:52:35,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 179 transitions, 1409 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-11-19 09:52:35,128 INFO L231 Difference]: Finished difference. Result has 123 places, 125 transitions, 945 flow [2024-11-19 09:52:35,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=945, PETRI_PLACES=123, PETRI_TRANSITIONS=125} [2024-11-19 09:52:35,129 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 62 predicate places. [2024-11-19 09:52:35,129 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 125 transitions, 945 flow [2024-11-19 09:52:35,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:35,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:35,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:35,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 09:52:35,130 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:35,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:35,130 INFO L85 PathProgramCache]: Analyzing trace with hash 709586714, now seen corresponding path program 7 times [2024-11-19 09:52:35,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:35,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143271355] [2024-11-19 09:52:35,130 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:52:35,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:35,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:35,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143271355] [2024-11-19 09:52:35,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143271355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:35,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:35,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:35,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341673959] [2024-11-19 09:52:35,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:35,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:35,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:35,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:35,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:35,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:35,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 125 transitions, 945 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:35,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:35,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:35,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:36,437 INFO L124 PetriNetUnfolderBase]: 2007/3588 cut-off events. [2024-11-19 09:52:36,437 INFO L125 PetriNetUnfolderBase]: For 13903/13939 co-relation queries the response was YES. [2024-11-19 09:52:36,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12684 conditions, 3588 events. 2007/3588 cut-off events. For 13903/13939 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22263 event pairs, 606 based on Foata normal form. 9/3475 useless extension candidates. Maximal degree in co-relation 12616. Up to 2643 conditions per place. [2024-11-19 09:52:36,460 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 141 selfloop transitions, 37 changer transitions 3/188 dead transitions. [2024-11-19 09:52:36,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 188 transitions, 1680 flow [2024-11-19 09:52:36,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:36,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-11-19 09:52:36,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40615835777126097 [2024-11-19 09:52:36,462 INFO L175 Difference]: Start difference. First operand has 123 places, 125 transitions, 945 flow. Second operand 11 states and 277 transitions. [2024-11-19 09:52:36,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 188 transitions, 1680 flow [2024-11-19 09:52:36,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 188 transitions, 1592 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-11-19 09:52:36,496 INFO L231 Difference]: Finished difference. Result has 135 places, 134 transitions, 1092 flow [2024-11-19 09:52:36,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1092, PETRI_PLACES=135, PETRI_TRANSITIONS=134} [2024-11-19 09:52:36,497 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 74 predicate places. [2024-11-19 09:52:36,497 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 134 transitions, 1092 flow [2024-11-19 09:52:36,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:36,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:36,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:36,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 09:52:36,498 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:36,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:36,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1622378782, now seen corresponding path program 8 times [2024-11-19 09:52:36,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:36,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204929891] [2024-11-19 09:52:36,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:52:36,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:36,524 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:52:36,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:37,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:37,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:37,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204929891] [2024-11-19 09:52:37,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204929891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:37,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:37,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:37,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259506800] [2024-11-19 09:52:37,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:37,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:37,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:37,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:37,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:37,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:37,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 134 transitions, 1092 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:37,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:37,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:37,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:37,686 INFO L124 PetriNetUnfolderBase]: 2139/3846 cut-off events. [2024-11-19 09:52:37,686 INFO L125 PetriNetUnfolderBase]: For 22314/22362 co-relation queries the response was YES. [2024-11-19 09:52:37,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14462 conditions, 3846 events. 2139/3846 cut-off events. For 22314/22362 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24558 event pairs, 663 based on Foata normal form. 11/3730 useless extension candidates. Maximal degree in co-relation 14389. Up to 2847 conditions per place. [2024-11-19 09:52:37,712 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 152 selfloop transitions, 37 changer transitions 3/199 dead transitions. [2024-11-19 09:52:37,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 199 transitions, 1881 flow [2024-11-19 09:52:37,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:37,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-19 09:52:37,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-19 09:52:37,714 INFO L175 Difference]: Start difference. First operand has 135 places, 134 transitions, 1092 flow. Second operand 11 states and 279 transitions. [2024-11-19 09:52:37,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 199 transitions, 1881 flow [2024-11-19 09:52:37,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 199 transitions, 1751 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-11-19 09:52:37,747 INFO L231 Difference]: Finished difference. Result has 143 places, 143 transitions, 1178 flow [2024-11-19 09:52:37,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1178, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2024-11-19 09:52:37,748 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 82 predicate places. [2024-11-19 09:52:37,748 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 1178 flow [2024-11-19 09:52:37,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:37,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:37,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:37,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 09:52:37,749 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:37,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:37,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2106684206, now seen corresponding path program 9 times [2024-11-19 09:52:37,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:37,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117076878] [2024-11-19 09:52:37,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:52:37,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:37,772 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:52:37,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:38,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:38,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117076878] [2024-11-19 09:52:38,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117076878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:38,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:38,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:38,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252024887] [2024-11-19 09:52:38,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:38,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:38,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:38,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:38,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:38,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:38,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 1178 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:38,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:38,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:38,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:38,972 INFO L124 PetriNetUnfolderBase]: 2305/4131 cut-off events. [2024-11-19 09:52:38,972 INFO L125 PetriNetUnfolderBase]: For 29056/29136 co-relation queries the response was YES. [2024-11-19 09:52:38,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16260 conditions, 4131 events. 2305/4131 cut-off events. For 29056/29136 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 26811 event pairs, 722 based on Foata normal form. 9/3998 useless extension candidates. Maximal degree in co-relation 16183. Up to 3056 conditions per place. [2024-11-19 09:52:39,006 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 160 selfloop transitions, 38 changer transitions 3/208 dead transitions. [2024-11-19 09:52:39,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 208 transitions, 2018 flow [2024-11-19 09:52:39,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:39,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:39,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-19 09:52:39,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-19 09:52:39,008 INFO L175 Difference]: Start difference. First operand has 143 places, 143 transitions, 1178 flow. Second operand 11 states and 282 transitions. [2024-11-19 09:52:39,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 208 transitions, 2018 flow [2024-11-19 09:52:39,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 208 transitions, 1886 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-11-19 09:52:39,040 INFO L231 Difference]: Finished difference. Result has 151 places, 150 transitions, 1280 flow [2024-11-19 09:52:39,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1280, PETRI_PLACES=151, PETRI_TRANSITIONS=150} [2024-11-19 09:52:39,041 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 90 predicate places. [2024-11-19 09:52:39,041 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 150 transitions, 1280 flow [2024-11-19 09:52:39,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:39,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:39,041 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:39,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 09:52:39,042 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:39,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:39,042 INFO L85 PathProgramCache]: Analyzing trace with hash -788811030, now seen corresponding path program 10 times [2024-11-19 09:52:39,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:39,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576685403] [2024-11-19 09:52:39,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:52:39,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:39,068 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:52:39,069 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:39,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:39,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576685403] [2024-11-19 09:52:39,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576685403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:39,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:39,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:39,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016757327] [2024-11-19 09:52:39,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:39,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:39,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:39,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:39,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:39,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:52:39,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 150 transitions, 1280 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:39,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:39,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:52:39,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:40,168 INFO L124 PetriNetUnfolderBase]: 2564/4531 cut-off events. [2024-11-19 09:52:40,168 INFO L125 PetriNetUnfolderBase]: For 36341/36461 co-relation queries the response was YES. [2024-11-19 09:52:40,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18085 conditions, 4531 events. 2564/4531 cut-off events. For 36341/36461 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 29436 event pairs, 912 based on Foata normal form. 23/4404 useless extension candidates. Maximal degree in co-relation 18004. Up to 3537 conditions per place. [2024-11-19 09:52:40,200 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 156 selfloop transitions, 37 changer transitions 4/203 dead transitions. [2024-11-19 09:52:40,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 203 transitions, 1974 flow [2024-11-19 09:52:40,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:40,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-11-19 09:52:40,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-11-19 09:52:40,201 INFO L175 Difference]: Start difference. First operand has 151 places, 150 transitions, 1280 flow. Second operand 11 states and 260 transitions. [2024-11-19 09:52:40,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 203 transitions, 1974 flow [2024-11-19 09:52:40,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 203 transitions, 1830 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-11-19 09:52:40,244 INFO L231 Difference]: Finished difference. Result has 158 places, 156 transitions, 1307 flow [2024-11-19 09:52:40,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1307, PETRI_PLACES=158, PETRI_TRANSITIONS=156} [2024-11-19 09:52:40,245 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 97 predicate places. [2024-11-19 09:52:40,245 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 156 transitions, 1307 flow [2024-11-19 09:52:40,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:40,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:40,245 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:40,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 09:52:40,245 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:40,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:40,246 INFO L85 PathProgramCache]: Analyzing trace with hash 204087340, now seen corresponding path program 11 times [2024-11-19 09:52:40,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:40,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000142155] [2024-11-19 09:52:40,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:52:40,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:40,273 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:52:40,273 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:40,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:40,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000142155] [2024-11-19 09:52:40,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000142155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:40,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:40,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:40,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472056391] [2024-11-19 09:52:40,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:40,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:40,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:40,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:40,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:40,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:40,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 156 transitions, 1307 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:40,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:40,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:40,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:41,544 INFO L124 PetriNetUnfolderBase]: 2517/4479 cut-off events. [2024-11-19 09:52:41,545 INFO L125 PetriNetUnfolderBase]: For 35209/35289 co-relation queries the response was YES. [2024-11-19 09:52:41,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18050 conditions, 4479 events. 2517/4479 cut-off events. For 35209/35289 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 29593 event pairs, 856 based on Foata normal form. 29/4372 useless extension candidates. Maximal degree in co-relation 17965. Up to 3319 conditions per place. [2024-11-19 09:52:41,573 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 165 selfloop transitions, 43 changer transitions 3/218 dead transitions. [2024-11-19 09:52:41,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 218 transitions, 2177 flow [2024-11-19 09:52:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:41,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-11-19 09:52:41,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-11-19 09:52:41,575 INFO L175 Difference]: Start difference. First operand has 158 places, 156 transitions, 1307 flow. Second operand 11 states and 280 transitions. [2024-11-19 09:52:41,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 218 transitions, 2177 flow [2024-11-19 09:52:41,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 218 transitions, 2065 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-11-19 09:52:41,622 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 1472 flow [2024-11-19 09:52:41,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1472, PETRI_PLACES=165, PETRI_TRANSITIONS=163} [2024-11-19 09:52:41,622 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 104 predicate places. [2024-11-19 09:52:41,623 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 1472 flow [2024-11-19 09:52:41,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:41,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:41,623 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:41,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 09:52:41,623 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:41,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:41,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1217833348, now seen corresponding path program 12 times [2024-11-19 09:52:41,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:41,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967886224] [2024-11-19 09:52:41,624 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:52:41,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:41,643 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 09:52:41,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:42,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:42,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967886224] [2024-11-19 09:52:42,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967886224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:42,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:42,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:42,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880574888] [2024-11-19 09:52:42,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:42,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:42,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:42,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:42,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:42,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 163 transitions, 1472 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:42,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:42,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:42,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:42,787 INFO L124 PetriNetUnfolderBase]: 2517/4483 cut-off events. [2024-11-19 09:52:42,788 INFO L125 PetriNetUnfolderBase]: For 41879/41941 co-relation queries the response was YES. [2024-11-19 09:52:42,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18682 conditions, 4483 events. 2517/4483 cut-off events. For 41879/41941 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 29552 event pairs, 878 based on Foata normal form. 19/4360 useless extension candidates. Maximal degree in co-relation 18593. Up to 3477 conditions per place. [2024-11-19 09:52:42,827 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 170 selfloop transitions, 38 changer transitions 4/219 dead transitions. [2024-11-19 09:52:42,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 219 transitions, 2223 flow [2024-11-19 09:52:42,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-11-19 09:52:42,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-11-19 09:52:42,829 INFO L175 Difference]: Start difference. First operand has 165 places, 163 transitions, 1472 flow. Second operand 11 states and 276 transitions. [2024-11-19 09:52:42,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 219 transitions, 2223 flow [2024-11-19 09:52:42,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 219 transitions, 2053 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-11-19 09:52:42,896 INFO L231 Difference]: Finished difference. Result has 171 places, 167 transitions, 1431 flow [2024-11-19 09:52:42,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1431, PETRI_PLACES=171, PETRI_TRANSITIONS=167} [2024-11-19 09:52:42,896 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 110 predicate places. [2024-11-19 09:52:42,896 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 167 transitions, 1431 flow [2024-11-19 09:52:42,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:42,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:42,897 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:42,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 09:52:42,897 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:42,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:42,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1543040050, now seen corresponding path program 13 times [2024-11-19 09:52:42,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:42,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937816875] [2024-11-19 09:52:42,898 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:52:42,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:43,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:43,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937816875] [2024-11-19 09:52:43,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937816875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:43,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:43,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:43,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503458775] [2024-11-19 09:52:43,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:43,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:43,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:43,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:43,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:43,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:43,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 167 transitions, 1431 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:43,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:43,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:43,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:44,029 INFO L124 PetriNetUnfolderBase]: 2517/4475 cut-off events. [2024-11-19 09:52:44,030 INFO L125 PetriNetUnfolderBase]: For 36810/36894 co-relation queries the response was YES. [2024-11-19 09:52:44,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18143 conditions, 4475 events. 2517/4475 cut-off events. For 36810/36894 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 29470 event pairs, 882 based on Foata normal form. 35/4376 useless extension candidates. Maximal degree in co-relation 18051. Up to 3473 conditions per place. [2024-11-19 09:52:44,063 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 168 selfloop transitions, 42 changer transitions 4/221 dead transitions. [2024-11-19 09:52:44,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 221 transitions, 2150 flow [2024-11-19 09:52:44,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:44,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-11-19 09:52:44,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-11-19 09:52:44,065 INFO L175 Difference]: Start difference. First operand has 171 places, 167 transitions, 1431 flow. Second operand 11 states and 275 transitions. [2024-11-19 09:52:44,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 221 transitions, 2150 flow [2024-11-19 09:52:44,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 221 transitions, 2042 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-19 09:52:44,115 INFO L231 Difference]: Finished difference. Result has 175 places, 171 transitions, 1471 flow [2024-11-19 09:52:44,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1471, PETRI_PLACES=175, PETRI_TRANSITIONS=171} [2024-11-19 09:52:44,115 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 114 predicate places. [2024-11-19 09:52:44,115 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 171 transitions, 1471 flow [2024-11-19 09:52:44,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:44,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:44,116 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:44,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 09:52:44,116 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:44,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:44,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1582921742, now seen corresponding path program 14 times [2024-11-19 09:52:44,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:44,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771480398] [2024-11-19 09:52:44,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:52:44,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:44,135 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:52:44,135 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:44,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:44,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771480398] [2024-11-19 09:52:44,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771480398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:44,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:44,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:44,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649994357] [2024-11-19 09:52:44,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:44,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:44,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:44,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:44,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:44,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:44,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 171 transitions, 1471 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:44,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:44,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:44,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:45,278 INFO L124 PetriNetUnfolderBase]: 2553/4541 cut-off events. [2024-11-19 09:52:45,279 INFO L125 PetriNetUnfolderBase]: For 37056/37140 co-relation queries the response was YES. [2024-11-19 09:52:45,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18317 conditions, 4541 events. 2553/4541 cut-off events. For 37056/37140 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 30142 event pairs, 944 based on Foata normal form. 35/4430 useless extension candidates. Maximal degree in co-relation 18223. Up to 3607 conditions per place. [2024-11-19 09:52:45,314 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 172 selfloop transitions, 38 changer transitions 3/220 dead transitions. [2024-11-19 09:52:45,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 220 transitions, 2165 flow [2024-11-19 09:52:45,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-19 09:52:45,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-19 09:52:45,315 INFO L175 Difference]: Start difference. First operand has 175 places, 171 transitions, 1471 flow. Second operand 11 states and 269 transitions. [2024-11-19 09:52:45,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 220 transitions, 2165 flow [2024-11-19 09:52:45,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 220 transitions, 2039 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-11-19 09:52:45,369 INFO L231 Difference]: Finished difference. Result has 179 places, 174 transitions, 1473 flow [2024-11-19 09:52:45,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1473, PETRI_PLACES=179, PETRI_TRANSITIONS=174} [2024-11-19 09:52:45,369 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 118 predicate places. [2024-11-19 09:52:45,369 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 174 transitions, 1473 flow [2024-11-19 09:52:45,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:45,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:45,370 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:45,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 09:52:45,370 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:45,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:45,370 INFO L85 PathProgramCache]: Analyzing trace with hash 2065942940, now seen corresponding path program 15 times [2024-11-19 09:52:45,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:45,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711791380] [2024-11-19 09:52:45,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:52:45,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:45,395 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:52:45,398 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:45,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:45,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711791380] [2024-11-19 09:52:45,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711791380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:45,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:45,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:45,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173503043] [2024-11-19 09:52:45,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:45,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:45,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:45,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:45,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:45,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 174 transitions, 1473 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:45,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:45,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:45,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:46,465 INFO L124 PetriNetUnfolderBase]: 2553/4554 cut-off events. [2024-11-19 09:52:46,465 INFO L125 PetriNetUnfolderBase]: For 36420/36504 co-relation queries the response was YES. [2024-11-19 09:52:46,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18197 conditions, 4554 events. 2553/4554 cut-off events. For 36420/36504 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 30287 event pairs, 951 based on Foata normal form. 27/4435 useless extension candidates. Maximal degree in co-relation 18101. Up to 3620 conditions per place. [2024-11-19 09:52:46,495 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 174 selfloop transitions, 36 changer transitions 3/220 dead transitions. [2024-11-19 09:52:46,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 220 transitions, 2139 flow [2024-11-19 09:52:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:46,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-11-19 09:52:46,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-11-19 09:52:46,497 INFO L175 Difference]: Start difference. First operand has 179 places, 174 transitions, 1473 flow. Second operand 11 states and 266 transitions. [2024-11-19 09:52:46,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 220 transitions, 2139 flow [2024-11-19 09:52:46,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 220 transitions, 2029 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-19 09:52:46,547 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 1461 flow [2024-11-19 09:52:46,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1461, PETRI_PLACES=183, PETRI_TRANSITIONS=176} [2024-11-19 09:52:46,548 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 122 predicate places. [2024-11-19 09:52:46,548 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 1461 flow [2024-11-19 09:52:46,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:46,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:46,548 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:46,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-19 09:52:46,549 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:46,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:46,549 INFO L85 PathProgramCache]: Analyzing trace with hash 611290964, now seen corresponding path program 16 times [2024-11-19 09:52:46,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:46,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148680707] [2024-11-19 09:52:46,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:52:46,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:46,572 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:52:46,573 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:47,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:47,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148680707] [2024-11-19 09:52:47,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148680707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:47,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:47,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:47,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408825337] [2024-11-19 09:52:47,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:47,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:47,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:47,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:47,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:47,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:52:47,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 176 transitions, 1461 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:47,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:47,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:52:47,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:47,920 INFO L124 PetriNetUnfolderBase]: 2990/5304 cut-off events. [2024-11-19 09:52:47,921 INFO L125 PetriNetUnfolderBase]: For 50548/50608 co-relation queries the response was YES. [2024-11-19 09:52:47,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21910 conditions, 5304 events. 2990/5304 cut-off events. For 50548/50608 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 36225 event pairs, 1062 based on Foata normal form. 13/5150 useless extension candidates. Maximal degree in co-relation 21812. Up to 3897 conditions per place. [2024-11-19 09:52:47,954 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 203 selfloop transitions, 45 changer transitions 3/257 dead transitions. [2024-11-19 09:52:47,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 257 transitions, 2592 flow [2024-11-19 09:52:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:52:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:52:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 299 transitions. [2024-11-19 09:52:47,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4018817204301075 [2024-11-19 09:52:47,955 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 1461 flow. Second operand 12 states and 299 transitions. [2024-11-19 09:52:47,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 257 transitions, 2592 flow [2024-11-19 09:52:48,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 257 transitions, 2522 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-19 09:52:48,027 INFO L231 Difference]: Finished difference. Result has 190 places, 188 transitions, 1734 flow [2024-11-19 09:52:48,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1734, PETRI_PLACES=190, PETRI_TRANSITIONS=188} [2024-11-19 09:52:48,028 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 129 predicate places. [2024-11-19 09:52:48,028 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 188 transitions, 1734 flow [2024-11-19 09:52:48,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:48,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:48,028 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:48,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-19 09:52:48,028 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:48,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:48,029 INFO L85 PathProgramCache]: Analyzing trace with hash -588628244, now seen corresponding path program 17 times [2024-11-19 09:52:48,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:48,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115247508] [2024-11-19 09:52:48,029 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:52:48,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:48,052 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:52:48,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:48,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:48,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115247508] [2024-11-19 09:52:48,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115247508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:48,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:48,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:48,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291480685] [2024-11-19 09:52:48,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:48,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:48,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:48,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:48,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:48,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:48,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 188 transitions, 1734 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:48,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:48,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:48,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:49,551 INFO L124 PetriNetUnfolderBase]: 2993/5377 cut-off events. [2024-11-19 09:52:49,551 INFO L125 PetriNetUnfolderBase]: For 65060/65208 co-relation queries the response was YES. [2024-11-19 09:52:49,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23822 conditions, 5377 events. 2993/5377 cut-off events. For 65060/65208 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 37607 event pairs, 978 based on Foata normal form. 43/5260 useless extension candidates. Maximal degree in co-relation 23720. Up to 3842 conditions per place. [2024-11-19 09:52:49,596 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 199 selfloop transitions, 55 changer transitions 3/264 dead transitions. [2024-11-19 09:52:49,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 264 transitions, 2935 flow [2024-11-19 09:52:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:52:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:52:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 308 transitions. [2024-11-19 09:52:49,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-11-19 09:52:49,598 INFO L175 Difference]: Start difference. First operand has 190 places, 188 transitions, 1734 flow. Second operand 12 states and 308 transitions. [2024-11-19 09:52:49,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 264 transitions, 2935 flow [2024-11-19 09:52:49,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 264 transitions, 2705 flow, removed 97 selfloop flow, removed 5 redundant places. [2024-11-19 09:52:49,706 INFO L231 Difference]: Finished difference. Result has 200 places, 199 transitions, 1917 flow [2024-11-19 09:52:49,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1917, PETRI_PLACES=200, PETRI_TRANSITIONS=199} [2024-11-19 09:52:49,707 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 139 predicate places. [2024-11-19 09:52:49,707 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 199 transitions, 1917 flow [2024-11-19 09:52:49,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:49,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:49,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:49,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-19 09:52:49,708 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:49,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:49,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1297632030, now seen corresponding path program 18 times [2024-11-19 09:52:49,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:49,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183154602] [2024-11-19 09:52:49,709 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:52:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:49,735 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 09:52:49,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:50,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:50,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183154602] [2024-11-19 09:52:50,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183154602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:50,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:50,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:50,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880994196] [2024-11-19 09:52:50,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:50,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:50,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:50,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:50,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:50,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:50,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 199 transitions, 1917 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:50,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:50,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:50,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:51,284 INFO L124 PetriNetUnfolderBase]: 3091/5543 cut-off events. [2024-11-19 09:52:51,285 INFO L125 PetriNetUnfolderBase]: For 77397/77545 co-relation queries the response was YES. [2024-11-19 09:52:51,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25332 conditions, 5543 events. 3091/5543 cut-off events. For 77397/77545 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 39402 event pairs, 1026 based on Foata normal form. 21/5403 useless extension candidates. Maximal degree in co-relation 25225. Up to 4114 conditions per place. [2024-11-19 09:52:51,343 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 208 selfloop transitions, 50 changer transitions 3/268 dead transitions. [2024-11-19 09:52:51,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 268 transitions, 3005 flow [2024-11-19 09:52:51,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:52:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:52:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 305 transitions. [2024-11-19 09:52:51,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4099462365591398 [2024-11-19 09:52:51,345 INFO L175 Difference]: Start difference. First operand has 200 places, 199 transitions, 1917 flow. Second operand 12 states and 305 transitions. [2024-11-19 09:52:51,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 268 transitions, 3005 flow [2024-11-19 09:52:51,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 268 transitions, 2788 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-11-19 09:52:51,466 INFO L231 Difference]: Finished difference. Result has 207 places, 205 transitions, 1970 flow [2024-11-19 09:52:51,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1970, PETRI_PLACES=207, PETRI_TRANSITIONS=205} [2024-11-19 09:52:51,467 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 146 predicate places. [2024-11-19 09:52:51,467 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 205 transitions, 1970 flow [2024-11-19 09:52:51,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:51,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:51,467 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:51,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-19 09:52:51,468 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:51,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:51,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1439786636, now seen corresponding path program 19 times [2024-11-19 09:52:51,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:51,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970012791] [2024-11-19 09:52:51,468 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:52:51,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:52:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:51,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:51,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970012791] [2024-11-19 09:52:51,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970012791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:51,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:51,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545083954] [2024-11-19 09:52:51,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:51,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:51,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:51,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:51,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:51,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:51,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 205 transitions, 1970 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:51,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:51,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:51,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:52,721 INFO L124 PetriNetUnfolderBase]: 3089/5561 cut-off events. [2024-11-19 09:52:52,721 INFO L125 PetriNetUnfolderBase]: For 76342/76426 co-relation queries the response was YES. [2024-11-19 09:52:52,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25156 conditions, 5561 events. 3089/5561 cut-off events. For 76342/76426 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 39399 event pairs, 1096 based on Foata normal form. 35/5433 useless extension candidates. Maximal degree in co-relation 25046. Up to 4191 conditions per place. [2024-11-19 09:52:52,770 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 205 selfloop transitions, 52 changer transitions 4/268 dead transitions. [2024-11-19 09:52:52,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 268 transitions, 2932 flow [2024-11-19 09:52:52,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:52:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:52:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 302 transitions. [2024-11-19 09:52:52,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-11-19 09:52:52,771 INFO L175 Difference]: Start difference. First operand has 207 places, 205 transitions, 1970 flow. Second operand 12 states and 302 transitions. [2024-11-19 09:52:52,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 268 transitions, 2932 flow [2024-11-19 09:52:52,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 268 transitions, 2773 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-11-19 09:52:52,901 INFO L231 Difference]: Finished difference. Result has 212 places, 209 transitions, 1993 flow [2024-11-19 09:52:52,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1993, PETRI_PLACES=212, PETRI_TRANSITIONS=209} [2024-11-19 09:52:52,902 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 151 predicate places. [2024-11-19 09:52:52,902 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 209 transitions, 1993 flow [2024-11-19 09:52:52,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:52,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:52,902 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:52,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-19 09:52:52,903 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:52,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:52,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1877101970, now seen corresponding path program 20 times [2024-11-19 09:52:52,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:52,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492975046] [2024-11-19 09:52:52,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:52:52,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:52,922 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:52:52,922 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:53,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:53,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492975046] [2024-11-19 09:52:53,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492975046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:53,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:53,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:53,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168711761] [2024-11-19 09:52:53,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:53,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:53,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:53,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:53,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:53,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:53,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 209 transitions, 1993 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:53,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:53,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:53,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:54,316 INFO L124 PetriNetUnfolderBase]: 3295/5909 cut-off events. [2024-11-19 09:52:54,316 INFO L125 PetriNetUnfolderBase]: For 89120/89388 co-relation queries the response was YES. [2024-11-19 09:52:54,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27795 conditions, 5909 events. 3295/5909 cut-off events. For 89120/89388 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 42288 event pairs, 1328 based on Foata normal form. 41/5761 useless extension candidates. Maximal degree in co-relation 27683. Up to 4637 conditions per place. [2024-11-19 09:52:54,369 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 229 selfloop transitions, 38 changer transitions 3/277 dead transitions. [2024-11-19 09:52:54,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 277 transitions, 3242 flow [2024-11-19 09:52:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:54,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2024-11-19 09:52:54,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4178885630498534 [2024-11-19 09:52:54,370 INFO L175 Difference]: Start difference. First operand has 212 places, 209 transitions, 1993 flow. Second operand 11 states and 285 transitions. [2024-11-19 09:52:54,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 277 transitions, 3242 flow [2024-11-19 09:52:54,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 277 transitions, 3082 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-11-19 09:52:54,502 INFO L231 Difference]: Finished difference. Result has 217 places, 219 transitions, 2200 flow [2024-11-19 09:52:54,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2200, PETRI_PLACES=217, PETRI_TRANSITIONS=219} [2024-11-19 09:52:54,503 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 156 predicate places. [2024-11-19 09:52:54,503 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 219 transitions, 2200 flow [2024-11-19 09:52:54,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:54,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:54,503 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:54,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-19 09:52:54,504 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:54,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:54,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1290559708, now seen corresponding path program 21 times [2024-11-19 09:52:54,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:54,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040696707] [2024-11-19 09:52:54,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:52:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:54,522 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:52:54,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:54,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:54,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040696707] [2024-11-19 09:52:54,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040696707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:54,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:54,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:54,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678200277] [2024-11-19 09:52:54,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:54,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:54,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:54,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:54,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:54,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:54,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 219 transitions, 2200 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:54,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:54,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:54,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:55,776 INFO L124 PetriNetUnfolderBase]: 3356/6019 cut-off events. [2024-11-19 09:52:55,776 INFO L125 PetriNetUnfolderBase]: For 106236/106640 co-relation queries the response was YES. [2024-11-19 09:52:55,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28688 conditions, 6019 events. 3356/6019 cut-off events. For 106236/106640 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 43324 event pairs, 1418 based on Foata normal form. 55/5881 useless extension candidates. Maximal degree in co-relation 28572. Up to 4876 conditions per place. [2024-11-19 09:52:55,826 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 223 selfloop transitions, 37 changer transitions 4/271 dead transitions. [2024-11-19 09:52:55,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 271 transitions, 3166 flow [2024-11-19 09:52:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:55,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:55,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-19 09:52:55,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-19 09:52:55,827 INFO L175 Difference]: Start difference. First operand has 217 places, 219 transitions, 2200 flow. Second operand 11 states and 272 transitions. [2024-11-19 09:52:55,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 271 transitions, 3166 flow [2024-11-19 09:52:55,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 271 transitions, 2924 flow, removed 103 selfloop flow, removed 5 redundant places. [2024-11-19 09:52:55,937 INFO L231 Difference]: Finished difference. Result has 225 places, 225 transitions, 2185 flow [2024-11-19 09:52:55,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2185, PETRI_PLACES=225, PETRI_TRANSITIONS=225} [2024-11-19 09:52:55,938 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 164 predicate places. [2024-11-19 09:52:55,938 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 225 transitions, 2185 flow [2024-11-19 09:52:55,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:55,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:55,938 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:55,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-19 09:52:55,938 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:55,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:55,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1685242390, now seen corresponding path program 22 times [2024-11-19 09:52:55,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:55,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623470671] [2024-11-19 09:52:55,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:52:55,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:55,957 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:52:55,958 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:56,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:56,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623470671] [2024-11-19 09:52:56,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623470671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:56,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:56,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:56,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922029438] [2024-11-19 09:52:56,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:56,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:56,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:56,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:56,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:56,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:52:56,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 225 transitions, 2185 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:56,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:56,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:52:56,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:57,538 INFO L124 PetriNetUnfolderBase]: 3711/6593 cut-off events. [2024-11-19 09:52:57,538 INFO L125 PetriNetUnfolderBase]: For 96421/96641 co-relation queries the response was YES. [2024-11-19 09:52:57,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30513 conditions, 6593 events. 3711/6593 cut-off events. For 96421/96641 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 47638 event pairs, 1523 based on Foata normal form. 61/6445 useless extension candidates. Maximal degree in co-relation 30393. Up to 5145 conditions per place. [2024-11-19 09:52:57,589 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 243 selfloop transitions, 45 changer transitions 3/297 dead transitions. [2024-11-19 09:52:57,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 297 transitions, 3459 flow [2024-11-19 09:52:57,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:57,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-11-19 09:52:57,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4149560117302053 [2024-11-19 09:52:57,591 INFO L175 Difference]: Start difference. First operand has 225 places, 225 transitions, 2185 flow. Second operand 11 states and 283 transitions. [2024-11-19 09:52:57,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 297 transitions, 3459 flow [2024-11-19 09:52:57,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 297 transitions, 3313 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-11-19 09:52:57,716 INFO L231 Difference]: Finished difference. Result has 233 places, 234 transitions, 2434 flow [2024-11-19 09:52:57,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2434, PETRI_PLACES=233, PETRI_TRANSITIONS=234} [2024-11-19 09:52:57,717 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 172 predicate places. [2024-11-19 09:52:57,717 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 234 transitions, 2434 flow [2024-11-19 09:52:57,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:57,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:57,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:57,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-19 09:52:57,717 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:57,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:57,718 INFO L85 PathProgramCache]: Analyzing trace with hash -619889824, now seen corresponding path program 23 times [2024-11-19 09:52:57,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:57,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259838809] [2024-11-19 09:52:57,718 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:52:57,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:57,735 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:52:57,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:52:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:52:58,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:52:58,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259838809] [2024-11-19 09:52:58,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259838809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:52:58,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:52:58,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:52:58,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197824719] [2024-11-19 09:52:58,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:52:58,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:52:58,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:52:58,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:52:58,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:52:58,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:52:58,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 234 transitions, 2434 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:58,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:52:58,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:52:58,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:52:59,372 INFO L124 PetriNetUnfolderBase]: 3626/6513 cut-off events. [2024-11-19 09:52:59,372 INFO L125 PetriNetUnfolderBase]: For 115966/116197 co-relation queries the response was YES. [2024-11-19 09:52:59,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31450 conditions, 6513 events. 3626/6513 cut-off events. For 115966/116197 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 47758 event pairs, 1521 based on Foata normal form. 51/6350 useless extension candidates. Maximal degree in co-relation 31325. Up to 5241 conditions per place. [2024-11-19 09:52:59,433 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 252 selfloop transitions, 36 changer transitions 3/298 dead transitions. [2024-11-19 09:52:59,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 298 transitions, 3728 flow [2024-11-19 09:52:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:52:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:52:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-19 09:52:59,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-19 09:52:59,436 INFO L175 Difference]: Start difference. First operand has 233 places, 234 transitions, 2434 flow. Second operand 11 states and 282 transitions. [2024-11-19 09:52:59,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 298 transitions, 3728 flow [2024-11-19 09:52:59,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 298 transitions, 3493 flow, removed 98 selfloop flow, removed 5 redundant places. [2024-11-19 09:52:59,657 INFO L231 Difference]: Finished difference. Result has 242 places, 241 transitions, 2533 flow [2024-11-19 09:52:59,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2205, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2533, PETRI_PLACES=242, PETRI_TRANSITIONS=241} [2024-11-19 09:52:59,658 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 181 predicate places. [2024-11-19 09:52:59,658 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 241 transitions, 2533 flow [2024-11-19 09:52:59,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:52:59,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:52:59,658 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:52:59,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-19 09:52:59,658 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:52:59,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:52:59,659 INFO L85 PathProgramCache]: Analyzing trace with hash -756549974, now seen corresponding path program 24 times [2024-11-19 09:52:59,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:52:59,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457403235] [2024-11-19 09:52:59,659 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:52:59,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:52:59,676 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 09:52:59,676 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:53:00,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:00,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457403235] [2024-11-19 09:53:00,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457403235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:00,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:00,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:53:00,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031361094] [2024-11-19 09:53:00,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:00,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:53:00,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:00,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:53:00,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:53:00,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:53:00,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 241 transitions, 2533 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:00,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:00,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:53:00,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:01,467 INFO L124 PetriNetUnfolderBase]: 3731/6732 cut-off events. [2024-11-19 09:53:01,467 INFO L125 PetriNetUnfolderBase]: For 132015/132254 co-relation queries the response was YES. [2024-11-19 09:53:01,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32559 conditions, 6732 events. 3731/6732 cut-off events. For 132015/132254 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 50091 event pairs, 1578 based on Foata normal form. 53/6565 useless extension candidates. Maximal degree in co-relation 32428. Up to 5419 conditions per place. [2024-11-19 09:53:01,538 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 258 selfloop transitions, 36 changer transitions 3/304 dead transitions. [2024-11-19 09:53:01,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 304 transitions, 3769 flow [2024-11-19 09:53:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:53:01,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:53:01,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-19 09:53:01,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-19 09:53:01,540 INFO L175 Difference]: Start difference. First operand has 242 places, 241 transitions, 2533 flow. Second operand 11 states and 282 transitions. [2024-11-19 09:53:01,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 304 transitions, 3769 flow [2024-11-19 09:53:01,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 304 transitions, 3545 flow, removed 94 selfloop flow, removed 5 redundant places. [2024-11-19 09:53:01,710 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 2570 flow [2024-11-19 09:53:01,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2309, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2570, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2024-11-19 09:53:01,710 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 189 predicate places. [2024-11-19 09:53:01,711 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 2570 flow [2024-11-19 09:53:01,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:01,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:01,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:01,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-19 09:53:01,711 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:53:01,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:01,712 INFO L85 PathProgramCache]: Analyzing trace with hash -959475268, now seen corresponding path program 25 times [2024-11-19 09:53:01,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:01,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651581470] [2024-11-19 09:53:01,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:53:01,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:53:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:53:02,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:02,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651581470] [2024-11-19 09:53:02,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651581470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:02,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:02,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:53:02,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516203605] [2024-11-19 09:53:02,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:02,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:53:02,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:02,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:53:02,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:53:02,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:53:02,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 2570 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:02,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:02,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:53:02,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:03,109 INFO L124 PetriNetUnfolderBase]: 3731/6723 cut-off events. [2024-11-19 09:53:03,109 INFO L125 PetriNetUnfolderBase]: For 129992/130226 co-relation queries the response was YES. [2024-11-19 09:53:03,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32258 conditions, 6723 events. 3731/6723 cut-off events. For 129992/130226 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 49861 event pairs, 1626 based on Foata normal form. 59/6557 useless extension candidates. Maximal degree in co-relation 32123. Up to 5496 conditions per place. [2024-11-19 09:53:03,185 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 254 selfloop transitions, 35 changer transitions 3/299 dead transitions. [2024-11-19 09:53:03,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 299 transitions, 3613 flow [2024-11-19 09:53:03,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:53:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:53:03,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-11-19 09:53:03,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4002932551319648 [2024-11-19 09:53:03,186 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 2570 flow. Second operand 11 states and 273 transitions. [2024-11-19 09:53:03,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 299 transitions, 3613 flow [2024-11-19 09:53:03,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 299 transitions, 3426 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-11-19 09:53:03,420 INFO L231 Difference]: Finished difference. Result has 256 places, 250 transitions, 2518 flow [2024-11-19 09:53:03,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2518, PETRI_PLACES=256, PETRI_TRANSITIONS=250} [2024-11-19 09:53:03,421 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 195 predicate places. [2024-11-19 09:53:03,421 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 250 transitions, 2518 flow [2024-11-19 09:53:03,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:03,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:03,421 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:03,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-19 09:53:03,421 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:53:03,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1867535554, now seen corresponding path program 26 times [2024-11-19 09:53:03,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:03,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768002871] [2024-11-19 09:53:03,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:53:03,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:03,435 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:53:03,435 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:03,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:53:03,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:03,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768002871] [2024-11-19 09:53:03,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768002871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:03,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:03,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:53:03,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136917465] [2024-11-19 09:53:03,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:03,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:53:03,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:03,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:53:03,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:53:03,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:53:03,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 250 transitions, 2518 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:03,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:03,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:53:03,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:05,099 INFO L124 PetriNetUnfolderBase]: 3827/6917 cut-off events. [2024-11-19 09:53:05,100 INFO L125 PetriNetUnfolderBase]: For 134817/135031 co-relation queries the response was YES. [2024-11-19 09:53:05,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33359 conditions, 6917 events. 3827/6917 cut-off events. For 134817/135031 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 51831 event pairs, 1684 based on Foata normal form. 48/6737 useless extension candidates. Maximal degree in co-relation 33221. Up to 5579 conditions per place. [2024-11-19 09:53:05,164 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 265 selfloop transitions, 37 changer transitions 3/312 dead transitions. [2024-11-19 09:53:05,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 312 transitions, 3793 flow [2024-11-19 09:53:05,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:53:05,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:53:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-19 09:53:05,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-19 09:53:05,166 INFO L175 Difference]: Start difference. First operand has 256 places, 250 transitions, 2518 flow. Second operand 11 states and 282 transitions. [2024-11-19 09:53:05,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 312 transitions, 3793 flow [2024-11-19 09:53:05,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 312 transitions, 3663 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-19 09:53:05,333 INFO L231 Difference]: Finished difference. Result has 261 places, 256 transitions, 2665 flow [2024-11-19 09:53:05,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2665, PETRI_PLACES=261, PETRI_TRANSITIONS=256} [2024-11-19 09:53:05,334 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 200 predicate places. [2024-11-19 09:53:05,334 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 256 transitions, 2665 flow [2024-11-19 09:53:05,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:05,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:05,334 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:05,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-19 09:53:05,334 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:53:05,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:05,335 INFO L85 PathProgramCache]: Analyzing trace with hash -689333314, now seen corresponding path program 27 times [2024-11-19 09:53:05,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:05,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893572712] [2024-11-19 09:53:05,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:53:05,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:05,347 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:53:05,347 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:53:05,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:05,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893572712] [2024-11-19 09:53:05,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893572712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:05,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:05,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:53:05,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811516084] [2024-11-19 09:53:05,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:05,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:53:05,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:53:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:53:05,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:53:05,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 256 transitions, 2665 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:05,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:05,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:53:05,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:06,696 INFO L124 PetriNetUnfolderBase]: 3827/6911 cut-off events. [2024-11-19 09:53:06,696 INFO L125 PetriNetUnfolderBase]: For 144195/144412 co-relation queries the response was YES. [2024-11-19 09:53:06,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33735 conditions, 6911 events. 3827/6911 cut-off events. For 144195/144412 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 52047 event pairs, 1659 based on Foata normal form. 54/6731 useless extension candidates. Maximal degree in co-relation 33594. Up to 5617 conditions per place. [2024-11-19 09:53:06,776 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 263 selfloop transitions, 38 changer transitions 4/312 dead transitions. [2024-11-19 09:53:06,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 312 transitions, 3764 flow [2024-11-19 09:53:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:53:06,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:53:06,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-19 09:53:06,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-19 09:53:06,778 INFO L175 Difference]: Start difference. First operand has 261 places, 256 transitions, 2665 flow. Second operand 11 states and 279 transitions. [2024-11-19 09:53:06,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 312 transitions, 3764 flow [2024-11-19 09:53:07,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 312 transitions, 3562 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-11-19 09:53:07,004 INFO L231 Difference]: Finished difference. Result has 267 places, 260 transitions, 2614 flow [2024-11-19 09:53:07,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2614, PETRI_PLACES=267, PETRI_TRANSITIONS=260} [2024-11-19 09:53:07,005 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 206 predicate places. [2024-11-19 09:53:07,005 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 260 transitions, 2614 flow [2024-11-19 09:53:07,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:07,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:07,005 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:07,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-19 09:53:07,006 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:53:07,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:07,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1391138282, now seen corresponding path program 28 times [2024-11-19 09:53:07,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:07,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134916652] [2024-11-19 09:53:07,007 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:53:07,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:07,024 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:53:07,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:53:07,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:07,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134916652] [2024-11-19 09:53:07,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134916652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:07,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:07,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:53:07,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544570825] [2024-11-19 09:53:07,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:07,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:53:07,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:07,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:53:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:53:07,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:53:07,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 260 transitions, 2614 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:07,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:07,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:53:07,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:08,563 INFO L124 PetriNetUnfolderBase]: 4025/7219 cut-off events. [2024-11-19 09:53:08,564 INFO L125 PetriNetUnfolderBase]: For 145032/145270 co-relation queries the response was YES. [2024-11-19 09:53:08,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34645 conditions, 7219 events. 4025/7219 cut-off events. For 145032/145270 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 54034 event pairs, 1716 based on Foata normal form. 70/7052 useless extension candidates. Maximal degree in co-relation 34501. Up to 5669 conditions per place. [2024-11-19 09:53:08,652 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 266 selfloop transitions, 47 changer transitions 5/324 dead transitions. [2024-11-19 09:53:08,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 324 transitions, 3710 flow [2024-11-19 09:53:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:53:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:53:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-19 09:53:08,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-19 09:53:08,657 INFO L175 Difference]: Start difference. First operand has 267 places, 260 transitions, 2614 flow. Second operand 11 states and 282 transitions. [2024-11-19 09:53:08,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 324 transitions, 3710 flow [2024-11-19 09:53:08,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 324 transitions, 3574 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-19 09:53:08,909 INFO L231 Difference]: Finished difference. Result has 271 places, 264 transitions, 2656 flow [2024-11-19 09:53:08,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2478, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2656, PETRI_PLACES=271, PETRI_TRANSITIONS=264} [2024-11-19 09:53:08,910 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 210 predicate places. [2024-11-19 09:53:08,910 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 264 transitions, 2656 flow [2024-11-19 09:53:08,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:08,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:08,910 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:08,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-19 09:53:08,910 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:53:08,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:08,911 INFO L85 PathProgramCache]: Analyzing trace with hash 832534706, now seen corresponding path program 29 times [2024-11-19 09:53:08,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:08,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438991611] [2024-11-19 09:53:08,911 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:53:08,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:08,929 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:53:08,929 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:53:09,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:09,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438991611] [2024-11-19 09:53:09,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438991611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:09,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:09,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:53:09,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572235138] [2024-11-19 09:53:09,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:09,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:53:09,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:09,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:53:09,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:53:09,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:53:09,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 264 transitions, 2656 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:09,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:09,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:53:09,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:10,506 INFO L124 PetriNetUnfolderBase]: 3863/6975 cut-off events. [2024-11-19 09:53:10,506 INFO L125 PetriNetUnfolderBase]: For 136450/136691 co-relation queries the response was YES. [2024-11-19 09:53:10,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33308 conditions, 6975 events. 3863/6975 cut-off events. For 136450/136691 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 52684 event pairs, 1717 based on Foata normal form. 70/6801 useless extension candidates. Maximal degree in co-relation 33162. Up to 5747 conditions per place. [2024-11-19 09:53:10,579 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 265 selfloop transitions, 38 changer transitions 3/313 dead transitions. [2024-11-19 09:53:10,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 313 transitions, 3678 flow [2024-11-19 09:53:10,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:53:10,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:53:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-19 09:53:10,581 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-19 09:53:10,581 INFO L175 Difference]: Start difference. First operand has 271 places, 264 transitions, 2656 flow. Second operand 11 states and 272 transitions. [2024-11-19 09:53:10,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 313 transitions, 3678 flow [2024-11-19 09:53:10,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 313 transitions, 3524 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-11-19 09:53:10,815 INFO L231 Difference]: Finished difference. Result has 276 places, 267 transitions, 2652 flow [2024-11-19 09:53:10,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2502, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2652, PETRI_PLACES=276, PETRI_TRANSITIONS=267} [2024-11-19 09:53:10,816 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 215 predicate places. [2024-11-19 09:53:10,816 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 267 transitions, 2652 flow [2024-11-19 09:53:10,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:10,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:10,816 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:10,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-19 09:53:10,816 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:53:10,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:10,817 INFO L85 PathProgramCache]: Analyzing trace with hash 176613210, now seen corresponding path program 30 times [2024-11-19 09:53:10,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:10,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914689160] [2024-11-19 09:53:10,817 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:53:10,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:10,829 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 09:53:10,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:53:11,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:11,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914689160] [2024-11-19 09:53:11,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914689160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:11,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:11,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:53:11,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934299428] [2024-11-19 09:53:11,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:11,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:53:11,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:11,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:53:11,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:53:11,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:53:11,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 267 transitions, 2652 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:11,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:11,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:53:11,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:12,416 INFO L124 PetriNetUnfolderBase]: 3863/7002 cut-off events. [2024-11-19 09:53:12,416 INFO L125 PetriNetUnfolderBase]: For 134030/134268 co-relation queries the response was YES. [2024-11-19 09:53:12,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33065 conditions, 7002 events. 3863/7002 cut-off events. For 134030/134268 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 52876 event pairs, 1744 based on Foata normal form. 62/6825 useless extension candidates. Maximal degree in co-relation 32916. Up to 5760 conditions per place. [2024-11-19 09:53:12,481 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 267 selfloop transitions, 36 changer transitions 3/313 dead transitions. [2024-11-19 09:53:12,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 313 transitions, 3624 flow [2024-11-19 09:53:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:53:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:53:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-19 09:53:12,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-19 09:53:12,482 INFO L175 Difference]: Start difference. First operand has 276 places, 267 transitions, 2652 flow. Second operand 11 states and 269 transitions. [2024-11-19 09:53:12,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 313 transitions, 3624 flow [2024-11-19 09:53:12,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 313 transitions, 3494 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-11-19 09:53:12,695 INFO L231 Difference]: Finished difference. Result has 280 places, 269 transitions, 2620 flow [2024-11-19 09:53:12,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2620, PETRI_PLACES=280, PETRI_TRANSITIONS=269} [2024-11-19 09:53:12,696 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 219 predicate places. [2024-11-19 09:53:12,696 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 269 transitions, 2620 flow [2024-11-19 09:53:12,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:12,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:12,697 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:12,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-19 09:53:12,697 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:53:12,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:12,697 INFO L85 PathProgramCache]: Analyzing trace with hash -940478890, now seen corresponding path program 31 times [2024-11-19 09:53:12,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:12,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719147302] [2024-11-19 09:53:12,698 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:53:12,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:53:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:53:13,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:13,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719147302] [2024-11-19 09:53:13,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719147302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:13,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:13,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:53:13,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937390670] [2024-11-19 09:53:13,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:13,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:53:13,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:13,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:53:13,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:53:13,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:53:13,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 269 transitions, 2620 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:13,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:13,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:53:13,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:14,265 INFO L124 PetriNetUnfolderBase]: 3994/7237 cut-off events. [2024-11-19 09:53:14,266 INFO L125 PetriNetUnfolderBase]: For 150298/150567 co-relation queries the response was YES. [2024-11-19 09:53:14,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34985 conditions, 7237 events. 3994/7237 cut-off events. For 150298/150567 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 55060 event pairs, 1764 based on Foata normal form. 54/7048 useless extension candidates. Maximal degree in co-relation 34834. Up to 5873 conditions per place. [2024-11-19 09:53:14,360 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 283 selfloop transitions, 36 changer transitions 3/329 dead transitions. [2024-11-19 09:53:14,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 329 transitions, 4113 flow [2024-11-19 09:53:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:53:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:53:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-19 09:53:14,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-19 09:53:14,362 INFO L175 Difference]: Start difference. First operand has 280 places, 269 transitions, 2620 flow. Second operand 11 states and 279 transitions. [2024-11-19 09:53:14,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 329 transitions, 4113 flow [2024-11-19 09:53:14,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 329 transitions, 4043 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-19 09:53:14,644 INFO L231 Difference]: Finished difference. Result has 286 places, 278 transitions, 3031 flow [2024-11-19 09:53:14,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3031, PETRI_PLACES=286, PETRI_TRANSITIONS=278} [2024-11-19 09:53:14,644 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 225 predicate places. [2024-11-19 09:53:14,645 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 278 transitions, 3031 flow [2024-11-19 09:53:14,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:14,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:14,645 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:14,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-19 09:53:14,645 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:53:14,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:14,645 INFO L85 PathProgramCache]: Analyzing trace with hash 804109904, now seen corresponding path program 32 times [2024-11-19 09:53:14,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:14,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207257838] [2024-11-19 09:53:14,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:53:14,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:14,661 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:53:14,661 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:53:15,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:15,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207257838] [2024-11-19 09:53:15,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207257838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:15,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:15,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:53:15,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586858765] [2024-11-19 09:53:15,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:15,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:53:15,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:15,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:53:15,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:53:15,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:53:15,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 278 transitions, 3031 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:15,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:15,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:53:15,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:16,792 INFO L124 PetriNetUnfolderBase]: 4156/7521 cut-off events. [2024-11-19 09:53:16,792 INFO L125 PetriNetUnfolderBase]: For 208852/209340 co-relation queries the response was YES. [2024-11-19 09:53:16,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38843 conditions, 7521 events. 4156/7521 cut-off events. For 208852/209340 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 57715 event pairs, 1805 based on Foata normal form. 54/7320 useless extension candidates. Maximal degree in co-relation 38688. Up to 6059 conditions per place. [2024-11-19 09:53:16,910 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 295 selfloop transitions, 37 changer transitions 3/342 dead transitions. [2024-11-19 09:53:16,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 342 transitions, 4558 flow [2024-11-19 09:53:16,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:53:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:53:16,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-11-19 09:53:16,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-11-19 09:53:16,912 INFO L175 Difference]: Start difference. First operand has 286 places, 278 transitions, 3031 flow. Second operand 11 states and 284 transitions. [2024-11-19 09:53:16,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 342 transitions, 4558 flow [2024-11-19 09:53:17,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 342 transitions, 4222 flow, removed 151 selfloop flow, removed 5 redundant places. [2024-11-19 09:53:17,276 INFO L231 Difference]: Finished difference. Result has 295 places, 287 transitions, 3140 flow [2024-11-19 09:53:17,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3140, PETRI_PLACES=295, PETRI_TRANSITIONS=287} [2024-11-19 09:53:17,277 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 234 predicate places. [2024-11-19 09:53:17,277 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 287 transitions, 3140 flow [2024-11-19 09:53:17,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:17,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:17,278 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:17,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-19 09:53:17,278 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:53:17,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:17,278 INFO L85 PathProgramCache]: Analyzing trace with hash 460103358, now seen corresponding path program 33 times [2024-11-19 09:53:17,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:17,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747735604] [2024-11-19 09:53:17,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:53:17,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:17,295 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:53:17,296 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:53:17,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:17,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747735604] [2024-11-19 09:53:17,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747735604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:17,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:17,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:53:17,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571455078] [2024-11-19 09:53:17,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:17,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:53:17,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:17,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:53:17,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:53:17,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:53:17,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 287 transitions, 3140 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:17,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:17,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:53:17,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:18,967 INFO L124 PetriNetUnfolderBase]: 4217/7584 cut-off events. [2024-11-19 09:53:18,967 INFO L125 PetriNetUnfolderBase]: For 217424/217936 co-relation queries the response was YES. [2024-11-19 09:53:19,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39149 conditions, 7584 events. 4217/7584 cut-off events. For 217424/217936 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 57884 event pairs, 1963 based on Foata normal form. 68/7406 useless extension candidates. Maximal degree in co-relation 38989. Up to 6298 conditions per place. [2024-11-19 09:53:19,072 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 289 selfloop transitions, 36 changer transitions 4/336 dead transitions. [2024-11-19 09:53:19,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 336 transitions, 4286 flow [2024-11-19 09:53:19,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:53:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:53:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-11-19 09:53:19,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3973607038123167 [2024-11-19 09:53:19,073 INFO L175 Difference]: Start difference. First operand has 295 places, 287 transitions, 3140 flow. Second operand 11 states and 271 transitions. [2024-11-19 09:53:19,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 336 transitions, 4286 flow [2024-11-19 09:53:19,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 336 transitions, 3984 flow, removed 134 selfloop flow, removed 5 redundant places. [2024-11-19 09:53:19,448 INFO L231 Difference]: Finished difference. Result has 303 places, 293 transitions, 3095 flow [2024-11-19 09:53:19,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3095, PETRI_PLACES=303, PETRI_TRANSITIONS=293} [2024-11-19 09:53:19,449 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 242 predicate places. [2024-11-19 09:53:19,449 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 293 transitions, 3095 flow [2024-11-19 09:53:19,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:19,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:19,459 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:19,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-19 09:53:19,459 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:53:19,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:19,460 INFO L85 PathProgramCache]: Analyzing trace with hash -518750330, now seen corresponding path program 34 times [2024-11-19 09:53:19,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:19,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015124919] [2024-11-19 09:53:19,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:53:19,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:19,480 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:53:19,480 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:53:19,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:19,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015124919] [2024-11-19 09:53:19,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015124919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:19,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:19,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:53:19,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740369791] [2024-11-19 09:53:19,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:19,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:53:19,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:19,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:53:19,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:53:19,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-19 09:53:19,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 293 transitions, 3095 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:19,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:19,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-19 09:53:19,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:21,625 INFO L124 PetriNetUnfolderBase]: 4587/8216 cut-off events. [2024-11-19 09:53:21,625 INFO L125 PetriNetUnfolderBase]: For 230007/230295 co-relation queries the response was YES. [2024-11-19 09:53:21,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41871 conditions, 8216 events. 4587/8216 cut-off events. For 230007/230295 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 63212 event pairs, 2027 based on Foata normal form. 74/8021 useless extension candidates. Maximal degree in co-relation 41707. Up to 6567 conditions per place. [2024-11-19 09:53:21,739 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 310 selfloop transitions, 44 changer transitions 3/363 dead transitions. [2024-11-19 09:53:21,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 363 transitions, 4689 flow [2024-11-19 09:53:21,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:53:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:53:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-11-19 09:53:21,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4149560117302053 [2024-11-19 09:53:21,740 INFO L175 Difference]: Start difference. First operand has 303 places, 293 transitions, 3095 flow. Second operand 11 states and 283 transitions. [2024-11-19 09:53:21,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 363 transitions, 4689 flow [2024-11-19 09:53:22,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 363 transitions, 4471 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-11-19 09:53:22,173 INFO L231 Difference]: Finished difference. Result has 311 places, 302 transitions, 3392 flow [2024-11-19 09:53:22,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2877, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3392, PETRI_PLACES=311, PETRI_TRANSITIONS=302} [2024-11-19 09:53:22,173 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 250 predicate places. [2024-11-19 09:53:22,173 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 302 transitions, 3392 flow [2024-11-19 09:53:22,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:22,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:22,174 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:22,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-19 09:53:22,174 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:53:22,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:22,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1693780828, now seen corresponding path program 35 times [2024-11-19 09:53:22,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:22,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157148485] [2024-11-19 09:53:22,174 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:53:22,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:22,188 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:53:22,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:53:22,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:22,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157148485] [2024-11-19 09:53:22,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157148485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:22,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:22,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:53:22,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758565228] [2024-11-19 09:53:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:22,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:53:22,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:22,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:53:22,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:53:22,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:53:22,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 302 transitions, 3392 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:22,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:22,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:53:22,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:23,971 INFO L124 PetriNetUnfolderBase]: 4452/8036 cut-off events. [2024-11-19 09:53:23,971 INFO L125 PetriNetUnfolderBase]: For 254973/255271 co-relation queries the response was YES. [2024-11-19 09:53:24,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42231 conditions, 8036 events. 4452/8036 cut-off events. For 254973/255271 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 62544 event pairs, 2023 based on Foata normal form. 63/7835 useless extension candidates. Maximal degree in co-relation 42062. Up to 6589 conditions per place. [2024-11-19 09:53:24,065 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 316 selfloop transitions, 35 changer transitions 3/361 dead transitions. [2024-11-19 09:53:24,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 361 transitions, 4833 flow [2024-11-19 09:53:24,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:53:24,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:53:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-19 09:53:24,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2024-11-19 09:53:24,066 INFO L175 Difference]: Start difference. First operand has 311 places, 302 transitions, 3392 flow. Second operand 11 states and 281 transitions. [2024-11-19 09:53:24,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 361 transitions, 4833 flow [2024-11-19 09:53:24,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 361 transitions, 4506 flow, removed 145 selfloop flow, removed 5 redundant places. [2024-11-19 09:53:24,521 INFO L231 Difference]: Finished difference. Result has 319 places, 307 transitions, 3379 flow [2024-11-19 09:53:24,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3069, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3379, PETRI_PLACES=319, PETRI_TRANSITIONS=307} [2024-11-19 09:53:24,522 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 258 predicate places. [2024-11-19 09:53:24,522 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 307 transitions, 3379 flow [2024-11-19 09:53:24,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:24,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:24,522 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:24,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-19 09:53:24,522 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:53:24,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:24,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1039826156, now seen corresponding path program 36 times [2024-11-19 09:53:24,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:24,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207373728] [2024-11-19 09:53:24,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:53:24,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:24,541 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 09:53:24,541 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:53:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:53:24,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:53:24,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207373728] [2024-11-19 09:53:24,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207373728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:53:24,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:53:24,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:53:24,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389458669] [2024-11-19 09:53:24,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:53:24,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:53:24,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:53:24,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:53:24,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:53:24,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-19 09:53:24,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 307 transitions, 3379 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:24,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:53:24,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-19 09:53:24,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:53:26,224 INFO L124 PetriNetUnfolderBase]: 4452/8025 cut-off events. [2024-11-19 09:53:26,224 INFO L125 PetriNetUnfolderBase]: For 244697/244987 co-relation queries the response was YES. [2024-11-19 09:53:26,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41087 conditions, 8025 events. 4452/8025 cut-off events. For 244697/244987 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 62340 event pairs, 2047 based on Foata normal form. 69/7826 useless extension candidates. Maximal degree in co-relation 40913. Up to 6666 conditions per place. [2024-11-19 09:53:26,341 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 312 selfloop transitions, 34 changer transitions 3/356 dead transitions. [2024-11-19 09:53:26,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 356 transitions, 4570 flow [2024-11-19 09:53:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:53:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:53:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-19 09:53:26,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-19 09:53:26,342 INFO L175 Difference]: Start difference. First operand has 319 places, 307 transitions, 3379 flow. Second operand 11 states and 272 transitions. [2024-11-19 09:53:26,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 356 transitions, 4570 flow [2024-11-19 09:53:26,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 356 transitions, 4323 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-11-19 09:53:26,768 INFO L231 Difference]: Finished difference. Result has 325 places, 310 transitions, 3285 flow [2024-11-19 09:53:26,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3132, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3285, PETRI_PLACES=325, PETRI_TRANSITIONS=310} [2024-11-19 09:53:26,769 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 264 predicate places. [2024-11-19 09:53:26,769 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 310 transitions, 3285 flow [2024-11-19 09:53:26,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:53:26,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:53:26,770 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:53:26,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-19 09:53:26,770 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 09:53:26,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:53:26,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1509578040, now seen corresponding path program 37 times [2024-11-19 09:53:26,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:53:26,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472605383] [2024-11-19 09:53:26,770 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:53:26,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:53:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat