./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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/pthread/queue.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:45:15,142 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:45:15,207 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:45:15,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:45:15,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:45:15,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:45:15,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:45:15,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:45:15,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:45:15,235 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:45:15,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:45:15,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:45:15,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:45:15,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:45:15,236 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:45:15,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:45:15,237 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:45:15,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:45:15,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:45:15,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:45:15,239 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:45:15,241 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:45:15,241 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:45:15,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:45:15,241 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:45:15,241 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:45:15,242 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:45:15,242 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:45:15,242 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:45:15,242 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:45:15,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:45:15,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:45:15,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:45:15,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:45:15,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:45:15,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:45:15,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:45:15,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:45:15,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:45:15,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:45:15,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:45:15,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:45:15,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2024-11-10 17:45:15,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:45:15,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:45:15,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:45:15,434 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:45:15,435 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:45:15,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue.i [2024-11-10 17:45:16,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:45:16,908 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:45:16,908 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-11-10 17:45:16,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee216285/e70d361a59e846beb43e1dfdc4a1758c/FLAGf62e14d7b [2024-11-10 17:45:16,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee216285/e70d361a59e846beb43e1dfdc4a1758c [2024-11-10 17:45:16,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:45:16,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:45:16,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:45:16,942 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:45:16,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:45:16,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2b98ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16, skipping insertion in model container [2024-11-10 17:45:16,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,994 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:45:17,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:45:17,349 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:45:17,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:45:17,457 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:45:17,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17 WrapperNode [2024-11-10 17:45:17,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:45:17,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:45:17,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:45:17,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:45:17,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17" (1/1) ... [2024-11-10 17:45:17,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17" (1/1) ... [2024-11-10 17:45:17,526 INFO L138 Inliner]: procedures = 274, calls = 107, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 293 [2024-11-10 17:45:17,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:45:17,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:45:17,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:45:17,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:45:17,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17" (1/1) ... [2024-11-10 17:45:17,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17" (1/1) ... [2024-11-10 17:45:17,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17" (1/1) ... [2024-11-10 17:45:17,567 INFO L175 MemorySlicer]: Split 92 memory accesses to 5 slices as follows [2, 8, 5, 23, 54]. 59 percent of accesses are in the largest equivalence class. The 58 initializations are split as follows [2, 8, 5, 20, 23]. The 16 writes are split as follows [0, 0, 0, 2, 14]. [2024-11-10 17:45:17,567 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17" (1/1) ... [2024-11-10 17:45:17,567 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17" (1/1) ... [2024-11-10 17:45:17,578 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17" (1/1) ... [2024-11-10 17:45:17,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17" (1/1) ... [2024-11-10 17:45:17,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17" (1/1) ... [2024-11-10 17:45:17,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17" (1/1) ... [2024-11-10 17:45:17,584 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:45:17,584 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:45:17,584 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:45:17,585 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:45:17,585 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17" (1/1) ... [2024-11-10 17:45:17,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:45:17,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:45:17,611 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) [2024-11-10 17:45:17,615 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 [2024-11-10 17:45:17,642 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 17:45:17,642 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 17:45:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 17:45:17,643 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 17:45:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 17:45:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 17:45:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 17:45:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 17:45:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 17:45:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-10 17:45:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 17:45:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 17:45:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 17:45:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 17:45:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-10 17:45:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 17:45:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:45:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:45:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 17:45:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 17:45:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 17:45:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-10 17:45:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:45:17,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:45:17,646 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 17:45:17,757 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:45:17,759 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:45:18,207 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:45:18,208 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:45:18,381 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:45:18,381 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:45:18,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:45:18 BoogieIcfgContainer [2024-11-10 17:45:18,382 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:45:18,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:45:18,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:45:18,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:45:18,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:45:16" (1/3) ... [2024-11-10 17:45:18,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b53dd83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:45:18, skipping insertion in model container [2024-11-10 17:45:18,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:17" (2/3) ... [2024-11-10 17:45:18,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b53dd83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:45:18, skipping insertion in model container [2024-11-10 17:45:18,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:45:18" (3/3) ... [2024-11-10 17:45:18,388 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-11-10 17:45:18,404 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:45:18,404 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2024-11-10 17:45:18,405 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:45:18,484 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 17:45:18,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 178 transitions, 370 flow [2024-11-10 17:45:18,548 INFO L124 PetriNetUnfolderBase]: 16/176 cut-off events. [2024-11-10 17:45:18,549 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 17:45:18,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 176 events. 16/176 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 538 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 148. Up to 2 conditions per place. [2024-11-10 17:45:18,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 178 transitions, 370 flow [2024-11-10 17:45:18,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 175 transitions, 362 flow [2024-11-10 17:45:18,562 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:45:18,566 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;@37fb158c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:45:18,567 INFO L334 AbstractCegarLoop]: Starting to check reachability of 134 error locations. [2024-11-10 17:45:18,569 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:45:18,569 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-10 17:45:18,569 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:45:18,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:18,570 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 17:45:18,570 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:18,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:18,574 INFO L85 PathProgramCache]: Analyzing trace with hash 26928, now seen corresponding path program 1 times [2024-11-10 17:45:18,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:18,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514412753] [2024-11-10 17:45:18,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:18,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:18,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:18,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514412753] [2024-11-10 17:45:18,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514412753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:18,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:18,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:45:18,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695864623] [2024-11-10 17:45:18,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:18,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:18,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:18,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:18,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:18,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2024-11-10 17:45:19,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 175 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:19,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:19,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2024-11-10 17:45:19,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:19,439 INFO L124 PetriNetUnfolderBase]: 1689/4602 cut-off events. [2024-11-10 17:45:19,439 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-11-10 17:45:19,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7331 conditions, 4602 events. 1689/4602 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 36984 event pairs, 1342 based on Foata normal form. 273/3592 useless extension candidates. Maximal degree in co-relation 7215. Up to 2650 conditions per place. [2024-11-10 17:45:19,462 INFO L140 encePairwiseOnDemand]: 166/178 looper letters, 57 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2024-11-10 17:45:19,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 157 transitions, 444 flow [2024-11-10 17:45:19,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:19,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2024-11-10 17:45:19,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7078651685393258 [2024-11-10 17:45:19,474 INFO L175 Difference]: Start difference. First operand has 166 places, 175 transitions, 362 flow. Second operand 3 states and 378 transitions. [2024-11-10 17:45:19,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 157 transitions, 444 flow [2024-11-10 17:45:19,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 157 transitions, 436 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 17:45:19,481 INFO L231 Difference]: Finished difference. Result has 154 places, 157 transitions, 322 flow [2024-11-10 17:45:19,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=154, PETRI_TRANSITIONS=157} [2024-11-10 17:45:19,485 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -12 predicate places. [2024-11-10 17:45:19,485 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 157 transitions, 322 flow [2024-11-10 17:45:19,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:19,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:19,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 17:45:19,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:45:19,486 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:19,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:19,487 INFO L85 PathProgramCache]: Analyzing trace with hash 26929, now seen corresponding path program 1 times [2024-11-10 17:45:19,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:19,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835161850] [2024-11-10 17:45:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:19,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:19,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:19,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835161850] [2024-11-10 17:45:19,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835161850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:19,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:19,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:45:19,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997896964] [2024-11-10 17:45:19,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:19,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:19,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:19,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:19,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:19,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2024-11-10 17:45:19,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 157 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:19,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:19,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2024-11-10 17:45:19,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:20,044 INFO L124 PetriNetUnfolderBase]: 1689/4599 cut-off events. [2024-11-10 17:45:20,044 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-10 17:45:20,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7283 conditions, 4599 events. 1689/4599 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 37032 event pairs, 1342 based on Foata normal form. 3/3321 useless extension candidates. Maximal degree in co-relation 7272. Up to 2650 conditions per place. [2024-11-10 17:45:20,067 INFO L140 encePairwiseOnDemand]: 173/178 looper letters, 57 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2024-11-10 17:45:20,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 154 transitions, 434 flow [2024-11-10 17:45:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:20,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:20,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2024-11-10 17:45:20,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6947565543071161 [2024-11-10 17:45:20,072 INFO L175 Difference]: Start difference. First operand has 154 places, 157 transitions, 322 flow. Second operand 3 states and 371 transitions. [2024-11-10 17:45:20,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 154 transitions, 434 flow [2024-11-10 17:45:20,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 154 transitions, 430 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:45:20,075 INFO L231 Difference]: Finished difference. Result has 151 places, 154 transitions, 316 flow [2024-11-10 17:45:20,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=151, PETRI_TRANSITIONS=154} [2024-11-10 17:45:20,077 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -15 predicate places. [2024-11-10 17:45:20,077 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 154 transitions, 316 flow [2024-11-10 17:45:20,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:20,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:20,078 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 17:45:20,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:45:20,079 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:20,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:20,080 INFO L85 PathProgramCache]: Analyzing trace with hash 802909008, now seen corresponding path program 1 times [2024-11-10 17:45:20,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:20,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350361043] [2024-11-10 17:45:20,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:20,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:20,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:20,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350361043] [2024-11-10 17:45:20,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350361043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:20,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:20,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:20,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139258833] [2024-11-10 17:45:20,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:20,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:45:20,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:20,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:45:20,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:45:20,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2024-11-10 17:45:20,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 154 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:20,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:20,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2024-11-10 17:45:20,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:20,695 INFO L124 PetriNetUnfolderBase]: 1689/4597 cut-off events. [2024-11-10 17:45:20,695 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 17:45:20,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7284 conditions, 4597 events. 1689/4597 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 37011 event pairs, 1342 based on Foata normal form. 0/3319 useless extension candidates. Maximal degree in co-relation 7271. Up to 2649 conditions per place. [2024-11-10 17:45:20,716 INFO L140 encePairwiseOnDemand]: 173/178 looper letters, 59 selfloop transitions, 3 changer transitions 0/152 dead transitions. [2024-11-10 17:45:20,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 152 transitions, 436 flow [2024-11-10 17:45:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:45:20,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:45:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2024-11-10 17:45:20,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6404494382022472 [2024-11-10 17:45:20,718 INFO L175 Difference]: Start difference. First operand has 151 places, 154 transitions, 316 flow. Second operand 4 states and 456 transitions. [2024-11-10 17:45:20,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 152 transitions, 436 flow [2024-11-10 17:45:20,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 152 transitions, 432 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:45:20,723 INFO L231 Difference]: Finished difference. Result has 150 places, 152 transitions, 314 flow [2024-11-10 17:45:20,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=150, PETRI_TRANSITIONS=152} [2024-11-10 17:45:20,725 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -16 predicate places. [2024-11-10 17:45:20,725 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 152 transitions, 314 flow [2024-11-10 17:45:20,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:20,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:20,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 17:45:20,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:45:20,725 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:20,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:20,726 INFO L85 PathProgramCache]: Analyzing trace with hash 802909009, now seen corresponding path program 1 times [2024-11-10 17:45:20,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:20,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762426125] [2024-11-10 17:45:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:20,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:20,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:20,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762426125] [2024-11-10 17:45:20,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762426125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:20,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:20,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:45:20,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901526716] [2024-11-10 17:45:20,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:20,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:45:20,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:20,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:45:20,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:45:21,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 178 [2024-11-10 17:45:21,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 152 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:21,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:21,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 178 [2024-11-10 17:45:21,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:21,339 INFO L124 PetriNetUnfolderBase]: 1689/4595 cut-off events. [2024-11-10 17:45:21,340 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-10 17:45:21,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7280 conditions, 4595 events. 1689/4595 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 36976 event pairs, 1342 based on Foata normal form. 2/3319 useless extension candidates. Maximal degree in co-relation 7265. Up to 2649 conditions per place. [2024-11-10 17:45:21,391 INFO L140 encePairwiseOnDemand]: 173/178 looper letters, 56 selfloop transitions, 3 changer transitions 0/150 dead transitions. [2024-11-10 17:45:21,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 150 transitions, 428 flow [2024-11-10 17:45:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:45:21,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:45:21,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 477 transitions. [2024-11-10 17:45:21,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6699438202247191 [2024-11-10 17:45:21,393 INFO L175 Difference]: Start difference. First operand has 150 places, 152 transitions, 314 flow. Second operand 4 states and 477 transitions. [2024-11-10 17:45:21,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 150 transitions, 428 flow [2024-11-10 17:45:21,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 150 transitions, 422 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 17:45:21,401 INFO L231 Difference]: Finished difference. Result has 148 places, 150 transitions, 310 flow [2024-11-10 17:45:21,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=148, PETRI_TRANSITIONS=150} [2024-11-10 17:45:21,402 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -18 predicate places. [2024-11-10 17:45:21,403 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 150 transitions, 310 flow [2024-11-10 17:45:21,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:21,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:21,403 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:21,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 17:45:21,403 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:21,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:21,404 INFO L85 PathProgramCache]: Analyzing trace with hash -84043900, now seen corresponding path program 1 times [2024-11-10 17:45:21,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:21,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083218106] [2024-11-10 17:45:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:21,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:21,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:21,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083218106] [2024-11-10 17:45:21,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083218106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:21,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:21,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:45:21,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771997606] [2024-11-10 17:45:21,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:21,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:45:21,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:21,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:45:21,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:45:21,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 178 [2024-11-10 17:45:21,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 150 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:21,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:21,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 178 [2024-11-10 17:45:21,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:22,057 INFO L124 PetriNetUnfolderBase]: 1965/4465 cut-off events. [2024-11-10 17:45:22,057 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-10 17:45:22,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7637 conditions, 4465 events. 1965/4465 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 32593 event pairs, 655 based on Foata normal form. 0/3823 useless extension candidates. Maximal degree in co-relation 7620. Up to 1807 conditions per place. [2024-11-10 17:45:22,075 INFO L140 encePairwiseOnDemand]: 156/178 looper letters, 80 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2024-11-10 17:45:22,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 153 transitions, 489 flow [2024-11-10 17:45:22,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:45:22,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 17:45:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 497 transitions. [2024-11-10 17:45:22,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5584269662921348 [2024-11-10 17:45:22,077 INFO L175 Difference]: Start difference. First operand has 148 places, 150 transitions, 310 flow. Second operand 5 states and 497 transitions. [2024-11-10 17:45:22,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 153 transitions, 489 flow [2024-11-10 17:45:22,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 153 transitions, 483 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 17:45:22,080 INFO L231 Difference]: Finished difference. Result has 133 places, 134 transitions, 284 flow [2024-11-10 17:45:22,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=133, PETRI_TRANSITIONS=134} [2024-11-10 17:45:22,081 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -33 predicate places. [2024-11-10 17:45:22,081 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 134 transitions, 284 flow [2024-11-10 17:45:22,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:22,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:22,081 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:22,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 17:45:22,082 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:22,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:22,085 INFO L85 PathProgramCache]: Analyzing trace with hash -84043899, now seen corresponding path program 1 times [2024-11-10 17:45:22,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:22,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202657655] [2024-11-10 17:45:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:22,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:22,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:22,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202657655] [2024-11-10 17:45:22,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202657655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:22,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:22,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:22,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111222373] [2024-11-10 17:45:22,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:22,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:45:22,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:22,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:45:22,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:45:22,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 178 [2024-11-10 17:45:22,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 134 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:22,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:22,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 178 [2024-11-10 17:45:22,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:22,835 INFO L124 PetriNetUnfolderBase]: 1649/3678 cut-off events. [2024-11-10 17:45:22,835 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2024-11-10 17:45:22,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6458 conditions, 3678 events. 1649/3678 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 25319 event pairs, 652 based on Foata normal form. 204/3267 useless extension candidates. Maximal degree in co-relation 2403. Up to 1322 conditions per place. [2024-11-10 17:45:22,845 INFO L140 encePairwiseOnDemand]: 158/178 looper letters, 72 selfloop transitions, 6 changer transitions 0/139 dead transitions. [2024-11-10 17:45:22,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 139 transitions, 451 flow [2024-11-10 17:45:22,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:45:22,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 17:45:22,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2024-11-10 17:45:22,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6202247191011236 [2024-11-10 17:45:22,847 INFO L175 Difference]: Start difference. First operand has 133 places, 134 transitions, 284 flow. Second operand 5 states and 552 transitions. [2024-11-10 17:45:22,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 139 transitions, 451 flow [2024-11-10 17:45:22,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 139 transitions, 439 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 17:45:22,850 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 256 flow [2024-11-10 17:45:22,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2024-11-10 17:45:22,852 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -47 predicate places. [2024-11-10 17:45:22,852 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 256 flow [2024-11-10 17:45:22,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:22,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:22,853 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:22,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 17:45:22,854 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:22,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:22,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1689607205, now seen corresponding path program 1 times [2024-11-10 17:45:22,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:22,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107791361] [2024-11-10 17:45:22,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:22,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:23,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:23,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107791361] [2024-11-10 17:45:23,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107791361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:23,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:23,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:45:23,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420670968] [2024-11-10 17:45:23,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:23,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:45:23,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:23,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:45:23,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:45:23,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 178 [2024-11-10 17:45:23,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:23,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:23,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 178 [2024-11-10 17:45:23,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:23,992 INFO L124 PetriNetUnfolderBase]: 2445/5382 cut-off events. [2024-11-10 17:45:23,993 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-10 17:45:23,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9446 conditions, 5382 events. 2445/5382 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 39608 event pairs, 518 based on Foata normal form. 0/4343 useless extension candidates. Maximal degree in co-relation 3541. Up to 3344 conditions per place. [2024-11-10 17:45:24,010 INFO L140 encePairwiseOnDemand]: 169/178 looper letters, 124 selfloop transitions, 11 changer transitions 0/187 dead transitions. [2024-11-10 17:45:24,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 187 transitions, 665 flow [2024-11-10 17:45:24,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 17:45:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 17:45:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 697 transitions. [2024-11-10 17:45:24,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5593900481540931 [2024-11-10 17:45:24,012 INFO L175 Difference]: Start difference. First operand has 119 places, 120 transitions, 256 flow. Second operand 7 states and 697 transitions. [2024-11-10 17:45:24,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 187 transitions, 665 flow [2024-11-10 17:45:24,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 187 transitions, 651 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 17:45:24,016 INFO L231 Difference]: Finished difference. Result has 125 places, 130 transitions, 318 flow [2024-11-10 17:45:24,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=125, PETRI_TRANSITIONS=130} [2024-11-10 17:45:24,017 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -41 predicate places. [2024-11-10 17:45:24,017 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 130 transitions, 318 flow [2024-11-10 17:45:24,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:24,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:24,018 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:24,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 17:45:24,018 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:24,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:24,018 INFO L85 PathProgramCache]: Analyzing trace with hash 309160118, now seen corresponding path program 1 times [2024-11-10 17:45:24,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:24,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021295316] [2024-11-10 17:45:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:24,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:24,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:24,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021295316] [2024-11-10 17:45:24,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021295316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:24,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:24,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:45:24,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53520045] [2024-11-10 17:45:24,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:24,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:45:24,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:24,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:45:24,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:45:24,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 178 [2024-11-10 17:45:24,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 130 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:24,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:24,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 178 [2024-11-10 17:45:24,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:24,622 INFO L124 PetriNetUnfolderBase]: 2367/4964 cut-off events. [2024-11-10 17:45:24,622 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-11-10 17:45:24,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9207 conditions, 4964 events. 2367/4964 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 34681 event pairs, 880 based on Foata normal form. 85/4536 useless extension candidates. Maximal degree in co-relation 8897. Up to 1971 conditions per place. [2024-11-10 17:45:24,639 INFO L140 encePairwiseOnDemand]: 166/178 looper letters, 107 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2024-11-10 17:45:24,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 160 transitions, 621 flow [2024-11-10 17:45:24,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:45:24,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 17:45:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2024-11-10 17:45:24,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6202247191011236 [2024-11-10 17:45:24,641 INFO L175 Difference]: Start difference. First operand has 125 places, 130 transitions, 318 flow. Second operand 5 states and 552 transitions. [2024-11-10 17:45:24,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 160 transitions, 621 flow [2024-11-10 17:45:24,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 160 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:24,643 INFO L231 Difference]: Finished difference. Result has 120 places, 122 transitions, 308 flow [2024-11-10 17:45:24,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=120, PETRI_TRANSITIONS=122} [2024-11-10 17:45:24,644 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -46 predicate places. [2024-11-10 17:45:24,644 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 122 transitions, 308 flow [2024-11-10 17:45:24,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:24,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:24,645 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:24,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 17:45:24,645 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:24,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:24,645 INFO L85 PathProgramCache]: Analyzing trace with hash 309160119, now seen corresponding path program 1 times [2024-11-10 17:45:24,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:24,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875791005] [2024-11-10 17:45:24,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:24,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:24,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:24,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875791005] [2024-11-10 17:45:24,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875791005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:24,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:24,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:45:24,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455101209] [2024-11-10 17:45:24,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:24,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:24,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:24,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:24,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:24,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 178 [2024-11-10 17:45:24,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 122 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:24,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:24,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 178 [2024-11-10 17:45:24,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:24,933 INFO L124 PetriNetUnfolderBase]: 1308/2993 cut-off events. [2024-11-10 17:45:24,934 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-10 17:45:24,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 2993 events. 1308/2993 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17876 event pairs, 667 based on Foata normal form. 51/2627 useless extension candidates. Maximal degree in co-relation 5301. Up to 1128 conditions per place. [2024-11-10 17:45:24,943 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 80 selfloop transitions, 3 changer transitions 0/135 dead transitions. [2024-11-10 17:45:24,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 135 transitions, 474 flow [2024-11-10 17:45:24,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:24,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2024-11-10 17:45:24,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7528089887640449 [2024-11-10 17:45:24,945 INFO L175 Difference]: Start difference. First operand has 120 places, 122 transitions, 308 flow. Second operand 3 states and 402 transitions. [2024-11-10 17:45:24,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 135 transitions, 474 flow [2024-11-10 17:45:24,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 135 transitions, 443 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-10 17:45:24,948 INFO L231 Difference]: Finished difference. Result has 110 places, 112 transitions, 241 flow [2024-11-10 17:45:24,948 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=110, PETRI_TRANSITIONS=112} [2024-11-10 17:45:24,949 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -56 predicate places. [2024-11-10 17:45:24,949 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 112 transitions, 241 flow [2024-11-10 17:45:24,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:24,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:24,949 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:24,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 17:45:24,950 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:24,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:24,950 INFO L85 PathProgramCache]: Analyzing trace with hash -782874860, now seen corresponding path program 1 times [2024-11-10 17:45:24,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:24,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868718108] [2024-11-10 17:45:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:24,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:25,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:25,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868718108] [2024-11-10 17:45:25,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868718108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:25,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:25,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:45:25,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044106970] [2024-11-10 17:45:25,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:25,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:25,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:25,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:25,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:25,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2024-11-10 17:45:25,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 112 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:25,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:25,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2024-11-10 17:45:25,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:25,307 INFO L124 PetriNetUnfolderBase]: 1318/2998 cut-off events. [2024-11-10 17:45:25,307 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-10 17:45:25,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5256 conditions, 2998 events. 1318/2998 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 17799 event pairs, 1025 based on Foata normal form. 75/2705 useless extension candidates. Maximal degree in co-relation 5251. Up to 2097 conditions per place. [2024-11-10 17:45:25,317 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 59 selfloop transitions, 1 changer transitions 0/109 dead transitions. [2024-11-10 17:45:25,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 109 transitions, 355 flow [2024-11-10 17:45:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2024-11-10 17:45:25,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6947565543071161 [2024-11-10 17:45:25,318 INFO L175 Difference]: Start difference. First operand has 110 places, 112 transitions, 241 flow. Second operand 3 states and 371 transitions. [2024-11-10 17:45:25,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 109 transitions, 355 flow [2024-11-10 17:45:25,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 109 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:25,320 INFO L231 Difference]: Finished difference. Result has 108 places, 109 transitions, 234 flow [2024-11-10 17:45:25,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=108, PETRI_TRANSITIONS=109} [2024-11-10 17:45:25,321 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -58 predicate places. [2024-11-10 17:45:25,321 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 109 transitions, 234 flow [2024-11-10 17:45:25,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:25,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:25,321 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:25,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 17:45:25,321 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:25,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:25,322 INFO L85 PathProgramCache]: Analyzing trace with hash -782874859, now seen corresponding path program 1 times [2024-11-10 17:45:25,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:25,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790590401] [2024-11-10 17:45:25,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:25,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:25,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:25,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790590401] [2024-11-10 17:45:25,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790590401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:25,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:25,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:45:25,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070639270] [2024-11-10 17:45:25,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:25,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:25,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:25,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:25,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:25,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2024-11-10 17:45:25,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:25,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:25,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2024-11-10 17:45:25,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:25,641 INFO L124 PetriNetUnfolderBase]: 1318/2986 cut-off events. [2024-11-10 17:45:25,641 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-10 17:45:25,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5231 conditions, 2986 events. 1318/2986 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 17689 event pairs, 1025 based on Foata normal form. 0/2618 useless extension candidates. Maximal degree in co-relation 5226. Up to 2097 conditions per place. [2024-11-10 17:45:25,648 INFO L140 encePairwiseOnDemand]: 176/178 looper letters, 59 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2024-11-10 17:45:25,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 108 transitions, 352 flow [2024-11-10 17:45:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:25,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2024-11-10 17:45:25,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.702247191011236 [2024-11-10 17:45:25,650 INFO L175 Difference]: Start difference. First operand has 108 places, 109 transitions, 234 flow. Second operand 3 states and 375 transitions. [2024-11-10 17:45:25,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 108 transitions, 352 flow [2024-11-10 17:45:25,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 108 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:25,651 INFO L231 Difference]: Finished difference. Result has 108 places, 108 transitions, 233 flow [2024-11-10 17:45:25,652 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=108, PETRI_TRANSITIONS=108} [2024-11-10 17:45:25,652 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -58 predicate places. [2024-11-10 17:45:25,652 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 108 transitions, 233 flow [2024-11-10 17:45:25,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:25,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:25,653 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:25,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 17:45:25,653 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:25,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1500684051, now seen corresponding path program 1 times [2024-11-10 17:45:25,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:25,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211320716] [2024-11-10 17:45:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:25,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:25,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:25,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211320716] [2024-11-10 17:45:25,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211320716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:25,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:25,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:25,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858165129] [2024-11-10 17:45:25,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:25,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:45:25,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:25,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:45:25,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:45:26,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 178 [2024-11-10 17:45:26,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 108 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:26,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:26,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 178 [2024-11-10 17:45:26,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:26,246 INFO L124 PetriNetUnfolderBase]: 1318/2962 cut-off events. [2024-11-10 17:45:26,246 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-10 17:45:26,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5208 conditions, 2962 events. 1318/2962 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 17433 event pairs, 1010 based on Foata normal form. 12/2630 useless extension candidates. Maximal degree in co-relation 5203. Up to 2067 conditions per place. [2024-11-10 17:45:26,255 INFO L140 encePairwiseOnDemand]: 172/178 looper letters, 64 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2024-11-10 17:45:26,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 114 transitions, 382 flow [2024-11-10 17:45:26,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:45:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 17:45:26,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 589 transitions. [2024-11-10 17:45:26,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6617977528089888 [2024-11-10 17:45:26,258 INFO L175 Difference]: Start difference. First operand has 108 places, 108 transitions, 233 flow. Second operand 5 states and 589 transitions. [2024-11-10 17:45:26,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 114 transitions, 382 flow [2024-11-10 17:45:26,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 114 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:26,259 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 236 flow [2024-11-10 17:45:26,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=109, PETRI_TRANSITIONS=106} [2024-11-10 17:45:26,260 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -57 predicate places. [2024-11-10 17:45:26,260 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 236 flow [2024-11-10 17:45:26,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:26,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:26,261 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:26,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 17:45:26,261 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:26,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:26,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1500684050, now seen corresponding path program 1 times [2024-11-10 17:45:26,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:26,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366648116] [2024-11-10 17:45:26,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:26,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:26,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:26,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366648116] [2024-11-10 17:45:26,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366648116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:26,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:26,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:45:26,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471540188] [2024-11-10 17:45:26,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:26,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:45:26,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:26,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:45:26,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:45:26,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2024-11-10 17:45:26,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:26,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:26,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2024-11-10 17:45:26,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:26,724 INFO L124 PetriNetUnfolderBase]: 1335/2955 cut-off events. [2024-11-10 17:45:26,725 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-10 17:45:26,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5259 conditions, 2955 events. 1335/2955 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 17217 event pairs, 1010 based on Foata normal form. 12/2635 useless extension candidates. Maximal degree in co-relation 5254. Up to 2067 conditions per place. [2024-11-10 17:45:26,734 INFO L140 encePairwiseOnDemand]: 172/178 looper letters, 67 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2024-11-10 17:45:26,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 112 transitions, 391 flow [2024-11-10 17:45:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:45:26,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 17:45:26,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2024-11-10 17:45:26,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6314606741573033 [2024-11-10 17:45:26,735 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 236 flow. Second operand 5 states and 562 transitions. [2024-11-10 17:45:26,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 112 transitions, 391 flow [2024-11-10 17:45:26,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 112 transitions, 383 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 17:45:26,737 INFO L231 Difference]: Finished difference. Result has 107 places, 104 transitions, 232 flow [2024-11-10 17:45:26,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=107, PETRI_TRANSITIONS=104} [2024-11-10 17:45:26,737 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -59 predicate places. [2024-11-10 17:45:26,738 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 104 transitions, 232 flow [2024-11-10 17:45:26,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:26,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:26,738 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:26,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 17:45:26,738 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:26,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:26,739 INFO L85 PathProgramCache]: Analyzing trace with hash -723466566, now seen corresponding path program 1 times [2024-11-10 17:45:26,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:26,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59414342] [2024-11-10 17:45:26,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:26,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:26,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:26,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59414342] [2024-11-10 17:45:26,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59414342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:26,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:26,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:26,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637623676] [2024-11-10 17:45:26,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:26,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:26,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:26,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:26,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:26,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 178 [2024-11-10 17:45:26,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:26,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:26,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 178 [2024-11-10 17:45:26,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:26,967 INFO L124 PetriNetUnfolderBase]: 1306/2926 cut-off events. [2024-11-10 17:45:26,967 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-10 17:45:26,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5186 conditions, 2926 events. 1306/2926 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 17157 event pairs, 1010 based on Foata normal form. 0/2606 useless extension candidates. Maximal degree in co-relation 5181. Up to 2057 conditions per place. [2024-11-10 17:45:26,975 INFO L140 encePairwiseOnDemand]: 175/178 looper letters, 65 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2024-11-10 17:45:26,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 111 transitions, 381 flow [2024-11-10 17:45:26,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:26,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2024-11-10 17:45:26,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7209737827715356 [2024-11-10 17:45:26,977 INFO L175 Difference]: Start difference. First operand has 107 places, 104 transitions, 232 flow. Second operand 3 states and 385 transitions. [2024-11-10 17:45:26,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 111 transitions, 381 flow [2024-11-10 17:45:26,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 111 transitions, 373 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 17:45:26,978 INFO L231 Difference]: Finished difference. Result has 105 places, 103 transitions, 226 flow [2024-11-10 17:45:26,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2024-11-10 17:45:26,979 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -61 predicate places. [2024-11-10 17:45:26,979 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 226 flow [2024-11-10 17:45:26,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:26,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:26,979 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] [2024-11-10 17:45:26,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 17:45:26,980 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:26,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:26,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1599827540, now seen corresponding path program 1 times [2024-11-10 17:45:26,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:26,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9800448] [2024-11-10 17:45:26,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:26,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:27,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:27,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9800448] [2024-11-10 17:45:27,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9800448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:27,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:27,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 17:45:27,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191586524] [2024-11-10 17:45:27,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:27,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 17:45:27,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:27,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 17:45:27,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-10 17:45:27,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 178 [2024-11-10 17:45:27,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 226 flow. Second operand has 8 states, 8 states have (on average 99.625) internal successors, (797), 8 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:27,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:27,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 178 [2024-11-10 17:45:27,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:27,911 INFO L124 PetriNetUnfolderBase]: 1563/3282 cut-off events. [2024-11-10 17:45:27,911 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-10 17:45:27,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6022 conditions, 3282 events. 1563/3282 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 18785 event pairs, 382 based on Foata normal form. 0/3020 useless extension candidates. Maximal degree in co-relation 6017. Up to 2235 conditions per place. [2024-11-10 17:45:27,924 INFO L140 encePairwiseOnDemand]: 169/178 looper letters, 90 selfloop transitions, 8 changer transitions 0/133 dead transitions. [2024-11-10 17:45:27,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 133 transitions, 486 flow [2024-11-10 17:45:27,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 17:45:27,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 17:45:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 777 transitions. [2024-11-10 17:45:27,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6235955056179775 [2024-11-10 17:45:27,930 INFO L175 Difference]: Start difference. First operand has 105 places, 103 transitions, 226 flow. Second operand 7 states and 777 transitions. [2024-11-10 17:45:27,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 133 transitions, 486 flow [2024-11-10 17:45:27,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 133 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:45:27,932 INFO L231 Difference]: Finished difference. Result has 108 places, 101 transitions, 234 flow [2024-11-10 17:45:27,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=234, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2024-11-10 17:45:27,932 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -58 predicate places. [2024-11-10 17:45:27,932 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 234 flow [2024-11-10 17:45:27,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.625) internal successors, (797), 8 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:27,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:27,933 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] [2024-11-10 17:45:27,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 17:45:27,933 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:27,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash 667845708, now seen corresponding path program 1 times [2024-11-10 17:45:27,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:27,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799632806] [2024-11-10 17:45:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:28,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:28,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799632806] [2024-11-10 17:45:28,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799632806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:28,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:28,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-10 17:45:28,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134644151] [2024-11-10 17:45:28,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:28,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 17:45:28,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:28,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 17:45:28,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-10 17:45:29,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 178 [2024-11-10 17:45:29,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 101 transitions, 234 flow. Second operand has 15 states, 15 states have (on average 97.6) internal successors, (1464), 15 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:29,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:29,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 178 [2024-11-10 17:45:29,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:30,028 INFO L124 PetriNetUnfolderBase]: 1545/3211 cut-off events. [2024-11-10 17:45:30,028 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-11-10 17:45:30,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5957 conditions, 3211 events. 1545/3211 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 18497 event pairs, 402 based on Foata normal form. 0/2974 useless extension candidates. Maximal degree in co-relation 5952. Up to 1824 conditions per place. [2024-11-10 17:45:30,038 INFO L140 encePairwiseOnDemand]: 163/178 looper letters, 125 selfloop transitions, 14 changer transitions 0/170 dead transitions. [2024-11-10 17:45:30,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 170 transitions, 660 flow [2024-11-10 17:45:30,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 17:45:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 17:45:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1387 transitions. [2024-11-10 17:45:30,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5993949870354365 [2024-11-10 17:45:30,045 INFO L175 Difference]: Start difference. First operand has 108 places, 101 transitions, 234 flow. Second operand 13 states and 1387 transitions. [2024-11-10 17:45:30,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 170 transitions, 660 flow [2024-11-10 17:45:30,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 170 transitions, 644 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 17:45:30,047 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 246 flow [2024-11-10 17:45:30,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=246, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2024-11-10 17:45:30,048 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -55 predicate places. [2024-11-10 17:45:30,048 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 246 flow [2024-11-10 17:45:30,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.6) internal successors, (1464), 15 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:30,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:30,049 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] [2024-11-10 17:45:30,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 17:45:30,049 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:30,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:30,049 INFO L85 PathProgramCache]: Analyzing trace with hash 161910977, now seen corresponding path program 1 times [2024-11-10 17:45:30,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:30,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441237970] [2024-11-10 17:45:30,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:30,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:31,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:31,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441237970] [2024-11-10 17:45:31,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441237970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:31,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:31,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 17:45:31,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508865845] [2024-11-10 17:45:31,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:31,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 17:45:31,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:31,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 17:45:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-10 17:45:31,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 178 [2024-11-10 17:45:31,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 246 flow. Second operand has 12 states, 12 states have (on average 81.33333333333333) internal successors, (976), 12 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:31,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:31,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 178 [2024-11-10 17:45:31,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:32,548 INFO L124 PetriNetUnfolderBase]: 2186/4476 cut-off events. [2024-11-10 17:45:32,549 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-11-10 17:45:32,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8474 conditions, 4476 events. 2186/4476 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 27973 event pairs, 184 based on Foata normal form. 56/4214 useless extension candidates. Maximal degree in co-relation 8468. Up to 1941 conditions per place. [2024-11-10 17:45:32,560 INFO L140 encePairwiseOnDemand]: 162/178 looper letters, 149 selfloop transitions, 19 changer transitions 0/200 dead transitions. [2024-11-10 17:45:32,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 200 transitions, 811 flow [2024-11-10 17:45:32,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 17:45:32,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 17:45:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1115 transitions. [2024-11-10 17:45:32,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.522003745318352 [2024-11-10 17:45:32,563 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 246 flow. Second operand 12 states and 1115 transitions. [2024-11-10 17:45:32,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 200 transitions, 811 flow [2024-11-10 17:45:32,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 200 transitions, 787 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-10 17:45:32,566 INFO L231 Difference]: Finished difference. Result has 115 places, 107 transitions, 317 flow [2024-11-10 17:45:32,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=317, PETRI_PLACES=115, PETRI_TRANSITIONS=107} [2024-11-10 17:45:32,567 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -51 predicate places. [2024-11-10 17:45:32,567 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 107 transitions, 317 flow [2024-11-10 17:45:32,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.33333333333333) internal successors, (976), 12 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:32,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:32,567 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, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:32,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 17:45:32,567 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:32,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:32,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1574927278, now seen corresponding path program 1 times [2024-11-10 17:45:32,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:32,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804630559] [2024-11-10 17:45:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:32,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:32,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:32,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804630559] [2024-11-10 17:45:32,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804630559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:32,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:32,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:45:32,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173866462] [2024-11-10 17:45:32,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:32,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:45:32,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:32,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:45:32,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:45:32,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2024-11-10 17:45:32,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 107 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:32,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:32,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2024-11-10 17:45:32,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:33,126 INFO L124 PetriNetUnfolderBase]: 2488/5153 cut-off events. [2024-11-10 17:45:33,127 INFO L125 PetriNetUnfolderBase]: For 822/822 co-relation queries the response was YES. [2024-11-10 17:45:33,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10486 conditions, 5153 events. 2488/5153 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 34169 event pairs, 1349 based on Foata normal form. 36/4849 useless extension candidates. Maximal degree in co-relation 10476. Up to 3328 conditions per place. [2024-11-10 17:45:33,145 INFO L140 encePairwiseOnDemand]: 173/178 looper letters, 99 selfloop transitions, 3 changer transitions 0/141 dead transitions. [2024-11-10 17:45:33,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 141 transitions, 620 flow [2024-11-10 17:45:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:45:33,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:45:33,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 504 transitions. [2024-11-10 17:45:33,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7078651685393258 [2024-11-10 17:45:33,147 INFO L175 Difference]: Start difference. First operand has 115 places, 107 transitions, 317 flow. Second operand 4 states and 504 transitions. [2024-11-10 17:45:33,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 141 transitions, 620 flow [2024-11-10 17:45:33,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 141 transitions, 602 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-10 17:45:33,152 INFO L231 Difference]: Finished difference. Result has 113 places, 108 transitions, 315 flow [2024-11-10 17:45:33,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=315, PETRI_PLACES=113, PETRI_TRANSITIONS=108} [2024-11-10 17:45:33,153 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -53 predicate places. [2024-11-10 17:45:33,153 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 108 transitions, 315 flow [2024-11-10 17:45:33,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:33,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:33,153 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:33,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 17:45:33,154 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:33,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:33,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1132108816, now seen corresponding path program 1 times [2024-11-10 17:45:33,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:33,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326299954] [2024-11-10 17:45:33,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:33,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:33,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:33,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326299954] [2024-11-10 17:45:33,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326299954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:33,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:33,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:33,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065838759] [2024-11-10 17:45:33,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:33,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:33,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:33,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:33,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:33,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2024-11-10 17:45:33,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 108 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:33,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:33,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2024-11-10 17:45:33,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:33,428 INFO L124 PetriNetUnfolderBase]: 1394/3127 cut-off events. [2024-11-10 17:45:33,428 INFO L125 PetriNetUnfolderBase]: For 413/413 co-relation queries the response was YES. [2024-11-10 17:45:33,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6205 conditions, 3127 events. 1394/3127 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 19029 event pairs, 694 based on Foata normal form. 74/3027 useless extension candidates. Maximal degree in co-relation 6193. Up to 1168 conditions per place. [2024-11-10 17:45:33,437 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 76 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2024-11-10 17:45:33,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 119 transitions, 485 flow [2024-11-10 17:45:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:33,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:33,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2024-11-10 17:45:33,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7265917602996255 [2024-11-10 17:45:33,439 INFO L175 Difference]: Start difference. First operand has 113 places, 108 transitions, 315 flow. Second operand 3 states and 388 transitions. [2024-11-10 17:45:33,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 119 transitions, 485 flow [2024-11-10 17:45:33,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 119 transitions, 467 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-10 17:45:33,441 INFO L231 Difference]: Finished difference. Result has 110 places, 104 transitions, 290 flow [2024-11-10 17:45:33,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=110, PETRI_TRANSITIONS=104} [2024-11-10 17:45:33,442 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -56 predicate places. [2024-11-10 17:45:33,442 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 104 transitions, 290 flow [2024-11-10 17:45:33,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:33,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:33,442 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:33,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-10 17:45:33,443 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:33,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:33,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1879277380, now seen corresponding path program 1 times [2024-11-10 17:45:33,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:33,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992722366] [2024-11-10 17:45:33,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:33,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 17:45:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992722366] [2024-11-10 17:45:33,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992722366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:33,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:33,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:33,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490012225] [2024-11-10 17:45:33,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:33,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:33,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:33,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:33,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:33,499 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2024-11-10 17:45:33,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 104 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:33,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:33,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2024-11-10 17:45:33,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:33,835 INFO L124 PetriNetUnfolderBase]: 2199/5144 cut-off events. [2024-11-10 17:45:33,835 INFO L125 PetriNetUnfolderBase]: For 761/761 co-relation queries the response was YES. [2024-11-10 17:45:33,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9979 conditions, 5144 events. 2199/5144 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 36414 event pairs, 1169 based on Foata normal form. 87/4971 useless extension candidates. Maximal degree in co-relation 9968. Up to 2409 conditions per place. [2024-11-10 17:45:33,852 INFO L140 encePairwiseOnDemand]: 175/178 looper letters, 112 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2024-11-10 17:45:33,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 155 transitions, 677 flow [2024-11-10 17:45:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:33,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2024-11-10 17:45:33,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7827715355805244 [2024-11-10 17:45:33,854 INFO L175 Difference]: Start difference. First operand has 110 places, 104 transitions, 290 flow. Second operand 3 states and 418 transitions. [2024-11-10 17:45:33,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 155 transitions, 677 flow [2024-11-10 17:45:33,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 155 transitions, 667 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:45:33,857 INFO L231 Difference]: Finished difference. Result has 111 places, 105 transitions, 296 flow [2024-11-10 17:45:33,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=111, PETRI_TRANSITIONS=105} [2024-11-10 17:45:33,858 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -55 predicate places. [2024-11-10 17:45:33,858 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 105 transitions, 296 flow [2024-11-10 17:45:33,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:33,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:33,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:33,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-10 17:45:33,859 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:33,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:33,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1199611317, now seen corresponding path program 1 times [2024-11-10 17:45:33,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:33,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515653111] [2024-11-10 17:45:33,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:33,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:33,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:33,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515653111] [2024-11-10 17:45:33,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515653111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:33,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:33,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:33,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556907990] [2024-11-10 17:45:33,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:33,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:33,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:33,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:33,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:33,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 178 [2024-11-10 17:45:33,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 105 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:33,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:33,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 178 [2024-11-10 17:45:33,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:34,155 INFO L124 PetriNetUnfolderBase]: 1298/3347 cut-off events. [2024-11-10 17:45:34,155 INFO L125 PetriNetUnfolderBase]: For 920/920 co-relation queries the response was YES. [2024-11-10 17:45:34,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6969 conditions, 3347 events. 1298/3347 cut-off events. For 920/920 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 21410 event pairs, 290 based on Foata normal form. 212/3410 useless extension candidates. Maximal degree in co-relation 6957. Up to 1647 conditions per place. [2024-11-10 17:45:34,165 INFO L140 encePairwiseOnDemand]: 172/178 looper letters, 69 selfloop transitions, 6 changer transitions 0/117 dead transitions. [2024-11-10 17:45:34,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 117 transitions, 486 flow [2024-11-10 17:45:34,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:34,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2024-11-10 17:45:34,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7247191011235955 [2024-11-10 17:45:34,167 INFO L175 Difference]: Start difference. First operand has 111 places, 105 transitions, 296 flow. Second operand 3 states and 387 transitions. [2024-11-10 17:45:34,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 117 transitions, 486 flow [2024-11-10 17:45:34,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 117 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:34,169 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 306 flow [2024-11-10 17:45:34,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2024-11-10 17:45:34,170 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -54 predicate places. [2024-11-10 17:45:34,170 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 306 flow [2024-11-10 17:45:34,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:34,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:34,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:34,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-10 17:45:34,170 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:34,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:34,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1258292707, now seen corresponding path program 1 times [2024-11-10 17:45:34,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:34,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292724886] [2024-11-10 17:45:34,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:34,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:34,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:34,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:34,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292724886] [2024-11-10 17:45:34,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292724886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:34,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:34,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:34,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835176380] [2024-11-10 17:45:34,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:34,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:45:34,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:34,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:45:34,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:45:34,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 178 [2024-11-10 17:45:34,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:34,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:34,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 178 [2024-11-10 17:45:34,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:34,821 INFO L124 PetriNetUnfolderBase]: 1298/3270 cut-off events. [2024-11-10 17:45:34,821 INFO L125 PetriNetUnfolderBase]: For 1005/1013 co-relation queries the response was YES. [2024-11-10 17:45:34,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7147 conditions, 3270 events. 1298/3270 cut-off events. For 1005/1013 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 20458 event pairs, 887 based on Foata normal form. 98/3266 useless extension candidates. Maximal degree in co-relation 7135. Up to 1968 conditions per place. [2024-11-10 17:45:34,829 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 63 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-10 17:45:34,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 102 transitions, 439 flow [2024-11-10 17:45:34,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:45:34,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 17:45:34,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 561 transitions. [2024-11-10 17:45:34,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6303370786516854 [2024-11-10 17:45:34,831 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 306 flow. Second operand 5 states and 561 transitions. [2024-11-10 17:45:34,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 102 transitions, 439 flow [2024-11-10 17:45:34,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:34,833 INFO L231 Difference]: Finished difference. Result has 108 places, 98 transitions, 294 flow [2024-11-10 17:45:34,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=108, PETRI_TRANSITIONS=98} [2024-11-10 17:45:34,834 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -58 predicate places. [2024-11-10 17:45:34,834 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 98 transitions, 294 flow [2024-11-10 17:45:34,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:34,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:34,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:34,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 17:45:34,835 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:34,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:34,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1640465055, now seen corresponding path program 1 times [2024-11-10 17:45:34,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:34,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068167541] [2024-11-10 17:45:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:34,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:35,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:35,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068167541] [2024-11-10 17:45:35,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068167541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:35,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:35,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-10 17:45:35,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141324060] [2024-11-10 17:45:35,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:35,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 17:45:35,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:35,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 17:45:35,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-10 17:45:36,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 178 [2024-11-10 17:45:36,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 98 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 100.15384615384616) internal successors, (1302), 13 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:36,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:36,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 178 [2024-11-10 17:45:36,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:36,479 INFO L124 PetriNetUnfolderBase]: 1186/2755 cut-off events. [2024-11-10 17:45:36,479 INFO L125 PetriNetUnfolderBase]: For 753/753 co-relation queries the response was YES. [2024-11-10 17:45:36,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 2755 events. 1186/2755 cut-off events. For 753/753 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 15267 event pairs, 213 based on Foata normal form. 0/2685 useless extension candidates. Maximal degree in co-relation 6073. Up to 1053 conditions per place. [2024-11-10 17:45:36,487 INFO L140 encePairwiseOnDemand]: 161/178 looper letters, 133 selfloop transitions, 16 changer transitions 0/175 dead transitions. [2024-11-10 17:45:36,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 175 transitions, 814 flow [2024-11-10 17:45:36,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 17:45:36,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 17:45:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1302 transitions. [2024-11-10 17:45:36,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6095505617977528 [2024-11-10 17:45:36,488 INFO L175 Difference]: Start difference. First operand has 108 places, 98 transitions, 294 flow. Second operand 12 states and 1302 transitions. [2024-11-10 17:45:36,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 175 transitions, 814 flow [2024-11-10 17:45:36,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 175 transitions, 802 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-10 17:45:36,491 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 323 flow [2024-11-10 17:45:36,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=323, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2024-11-10 17:45:36,492 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -49 predicate places. [2024-11-10 17:45:36,492 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 323 flow [2024-11-10 17:45:36,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 100.15384615384616) internal successors, (1302), 13 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:36,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:36,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:36,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-10 17:45:36,493 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:36,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:36,493 INFO L85 PathProgramCache]: Analyzing trace with hash 215633001, now seen corresponding path program 1 times [2024-11-10 17:45:36,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:36,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784697043] [2024-11-10 17:45:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:36,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:38,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:38,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784697043] [2024-11-10 17:45:38,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784697043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:38,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:38,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-10 17:45:38,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204681420] [2024-11-10 17:45:38,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:38,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 17:45:38,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:38,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 17:45:38,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-10 17:45:39,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 178 [2024-11-10 17:45:39,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 323 flow. Second operand has 19 states, 19 states have (on average 67.3157894736842) internal successors, (1279), 19 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:39,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:39,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 178 [2024-11-10 17:45:39,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:40,346 INFO L124 PetriNetUnfolderBase]: 1278/2967 cut-off events. [2024-11-10 17:45:40,346 INFO L125 PetriNetUnfolderBase]: For 966/966 co-relation queries the response was YES. [2024-11-10 17:45:40,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6748 conditions, 2967 events. 1278/2967 cut-off events. For 966/966 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 16206 event pairs, 174 based on Foata normal form. 0/2895 useless extension candidates. Maximal degree in co-relation 6733. Up to 747 conditions per place. [2024-11-10 17:45:40,356 INFO L140 encePairwiseOnDemand]: 155/178 looper letters, 162 selfloop transitions, 22 changer transitions 0/208 dead transitions. [2024-11-10 17:45:40,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 208 transitions, 1015 flow [2024-11-10 17:45:40,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 17:45:40,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 17:45:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1274 transitions. [2024-11-10 17:45:40,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42101784534038333 [2024-11-10 17:45:40,358 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 323 flow. Second operand 17 states and 1274 transitions. [2024-11-10 17:45:40,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 208 transitions, 1015 flow [2024-11-10 17:45:40,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 208 transitions, 987 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-10 17:45:40,363 INFO L231 Difference]: Finished difference. Result has 127 places, 104 transitions, 378 flow [2024-11-10 17:45:40,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=378, PETRI_PLACES=127, PETRI_TRANSITIONS=104} [2024-11-10 17:45:40,364 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -39 predicate places. [2024-11-10 17:45:40,364 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 104 transitions, 378 flow [2024-11-10 17:45:40,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 67.3157894736842) internal successors, (1279), 19 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:40,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:40,364 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:40,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-10 17:45:40,365 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:40,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:40,365 INFO L85 PathProgramCache]: Analyzing trace with hash 420927554, now seen corresponding path program 1 times [2024-11-10 17:45:40,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:40,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498167918] [2024-11-10 17:45:40,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:40,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 17:45:40,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:40,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498167918] [2024-11-10 17:45:40,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498167918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:45:40,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148087782] [2024-11-10 17:45:40,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:40,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:45:40,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:45:40,419 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) [2024-11-10 17:45:40,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 17:45:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:40,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 17:45:40,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:45:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 17:45:40,603 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:45:40,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148087782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:40,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 17:45:40,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-10 17:45:40,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310586900] [2024-11-10 17:45:40,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:40,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:40,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:40,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:40,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:45:40,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2024-11-10 17:45:40,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 104 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:40,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:40,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2024-11-10 17:45:40,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:40,872 INFO L124 PetriNetUnfolderBase]: 1174/2956 cut-off events. [2024-11-10 17:45:40,872 INFO L125 PetriNetUnfolderBase]: For 1101/1104 co-relation queries the response was YES. [2024-11-10 17:45:40,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6690 conditions, 2956 events. 1174/2956 cut-off events. For 1101/1104 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 16984 event pairs, 923 based on Foata normal form. 7/2867 useless extension candidates. Maximal degree in co-relation 6671. Up to 2057 conditions per place. [2024-11-10 17:45:40,882 INFO L140 encePairwiseOnDemand]: 176/178 looper letters, 62 selfloop transitions, 1 changer transitions 2/103 dead transitions. [2024-11-10 17:45:40,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 103 transitions, 506 flow [2024-11-10 17:45:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:40,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2024-11-10 17:45:40,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6966292134831461 [2024-11-10 17:45:40,883 INFO L175 Difference]: Start difference. First operand has 127 places, 104 transitions, 378 flow. Second operand 3 states and 372 transitions. [2024-11-10 17:45:40,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 103 transitions, 506 flow [2024-11-10 17:45:40,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 103 transitions, 475 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-10 17:45:40,886 INFO L231 Difference]: Finished difference. Result has 116 places, 101 transitions, 342 flow [2024-11-10 17:45:40,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=116, PETRI_TRANSITIONS=101} [2024-11-10 17:45:40,887 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -50 predicate places. [2024-11-10 17:45:40,887 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 101 transitions, 342 flow [2024-11-10 17:45:40,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:40,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:40,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:40,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 17:45:41,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-10 17:45:41,089 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:41,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:41,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1151239357, now seen corresponding path program 1 times [2024-11-10 17:45:41,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:41,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471034871] [2024-11-10 17:45:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:41,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:41,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:41,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471034871] [2024-11-10 17:45:41,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471034871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:41,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:41,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:45:41,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216490694] [2024-11-10 17:45:41,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:41,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:45:41,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:41,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:45:41,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:45:41,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2024-11-10 17:45:41,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 101 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:41,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:41,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2024-11-10 17:45:41,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:41,601 INFO L124 PetriNetUnfolderBase]: 1349/3344 cut-off events. [2024-11-10 17:45:41,601 INFO L125 PetriNetUnfolderBase]: For 1163/1167 co-relation queries the response was YES. [2024-11-10 17:45:41,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7400 conditions, 3344 events. 1349/3344 cut-off events. For 1163/1167 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 19603 event pairs, 716 based on Foata normal form. 7/3271 useless extension candidates. Maximal degree in co-relation 7381. Up to 1750 conditions per place. [2024-11-10 17:45:41,611 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 112 selfloop transitions, 3 changer transitions 0/151 dead transitions. [2024-11-10 17:45:41,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 151 transitions, 751 flow [2024-11-10 17:45:41,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:45:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:45:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 514 transitions. [2024-11-10 17:45:41,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7219101123595506 [2024-11-10 17:45:41,612 INFO L175 Difference]: Start difference. First operand has 116 places, 101 transitions, 342 flow. Second operand 4 states and 514 transitions. [2024-11-10 17:45:41,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 151 transitions, 751 flow [2024-11-10 17:45:41,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 151 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:41,616 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 351 flow [2024-11-10 17:45:41,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-11-10 17:45:41,616 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -49 predicate places. [2024-11-10 17:45:41,616 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 351 flow [2024-11-10 17:45:41,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:41,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:41,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:41,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-10 17:45:41,617 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:41,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:41,617 INFO L85 PathProgramCache]: Analyzing trace with hash 580309717, now seen corresponding path program 1 times [2024-11-10 17:45:41,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:41,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907353281] [2024-11-10 17:45:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:41,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:42,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:42,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907353281] [2024-11-10 17:45:42,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907353281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:42,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:42,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-10 17:45:42,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740125638] [2024-11-10 17:45:42,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:42,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 17:45:42,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:42,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 17:45:42,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-10 17:45:44,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 178 [2024-11-10 17:45:44,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 351 flow. Second operand has 21 states, 21 states have (on average 96.47619047619048) internal successors, (2026), 21 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:44,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:44,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 178 [2024-11-10 17:45:44,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:44,884 INFO L124 PetriNetUnfolderBase]: 1275/2928 cut-off events. [2024-11-10 17:45:44,884 INFO L125 PetriNetUnfolderBase]: For 1602/1602 co-relation queries the response was YES. [2024-11-10 17:45:44,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7079 conditions, 2928 events. 1275/2928 cut-off events. For 1602/1602 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 15730 event pairs, 171 based on Foata normal form. 0/2889 useless extension candidates. Maximal degree in co-relation 7059. Up to 717 conditions per place. [2024-11-10 17:45:44,894 INFO L140 encePairwiseOnDemand]: 154/178 looper letters, 146 selfloop transitions, 23 changer transitions 15/207 dead transitions. [2024-11-10 17:45:44,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 207 transitions, 1099 flow [2024-11-10 17:45:44,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 17:45:44,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 17:45:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1860 transitions. [2024-11-10 17:45:44,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5805243445692884 [2024-11-10 17:45:44,896 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 351 flow. Second operand 18 states and 1860 transitions. [2024-11-10 17:45:44,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 207 transitions, 1099 flow [2024-11-10 17:45:44,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 207 transitions, 1049 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 17:45:44,901 INFO L231 Difference]: Finished difference. Result has 133 places, 102 transitions, 401 flow [2024-11-10 17:45:44,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=401, PETRI_PLACES=133, PETRI_TRANSITIONS=102} [2024-11-10 17:45:44,901 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -33 predicate places. [2024-11-10 17:45:44,902 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 102 transitions, 401 flow [2024-11-10 17:45:44,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 96.47619047619048) internal successors, (2026), 21 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:44,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:44,902 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:44,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-10 17:45:44,903 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:44,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:44,903 INFO L85 PathProgramCache]: Analyzing trace with hash -690651973, now seen corresponding path program 1 times [2024-11-10 17:45:44,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:44,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476118381] [2024-11-10 17:45:44,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:44,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:47,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:47,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476118381] [2024-11-10 17:45:47,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476118381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:47,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:47,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-10 17:45:47,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975797923] [2024-11-10 17:45:47,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:47,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 17:45:47,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:47,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 17:45:47,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2024-11-10 17:45:50,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 178 [2024-11-10 17:45:50,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 102 transitions, 401 flow. Second operand has 26 states, 26 states have (on average 95.0) internal successors, (2470), 26 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:50,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:50,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 178 [2024-11-10 17:45:50,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:51,912 INFO L124 PetriNetUnfolderBase]: 1969/4347 cut-off events. [2024-11-10 17:45:51,912 INFO L125 PetriNetUnfolderBase]: For 2388/2391 co-relation queries the response was YES. [2024-11-10 17:45:51,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10846 conditions, 4347 events. 1969/4347 cut-off events. For 2388/2391 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 25574 event pairs, 461 based on Foata normal form. 0/4281 useless extension candidates. Maximal degree in co-relation 10824. Up to 2732 conditions per place. [2024-11-10 17:45:51,927 INFO L140 encePairwiseOnDemand]: 149/178 looper letters, 155 selfloop transitions, 51 changer transitions 21/250 dead transitions. [2024-11-10 17:45:51,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 250 transitions, 1417 flow [2024-11-10 17:45:51,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-10 17:45:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-10 17:45:51,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2909 transitions. [2024-11-10 17:45:51,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.563541263076327 [2024-11-10 17:45:51,929 INFO L175 Difference]: Start difference. First operand has 133 places, 102 transitions, 401 flow. Second operand 29 states and 2909 transitions. [2024-11-10 17:45:51,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 250 transitions, 1417 flow [2024-11-10 17:45:51,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 250 transitions, 1335 flow, removed 0 selfloop flow, removed 15 redundant places. [2024-11-10 17:45:51,936 INFO L231 Difference]: Finished difference. Result has 164 places, 148 transitions, 804 flow [2024-11-10 17:45:51,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=804, PETRI_PLACES=164, PETRI_TRANSITIONS=148} [2024-11-10 17:45:51,936 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, -2 predicate places. [2024-11-10 17:45:51,936 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 148 transitions, 804 flow [2024-11-10 17:45:51,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 95.0) internal successors, (2470), 26 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:51,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:51,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:51,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-10 17:45:51,937 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:51,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:51,938 INFO L85 PathProgramCache]: Analyzing trace with hash 715150583, now seen corresponding path program 2 times [2024-11-10 17:45:51,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:51,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153698757] [2024-11-10 17:45:51,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:51,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:53,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:53,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153698757] [2024-11-10 17:45:53,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153698757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:53,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:53,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-10 17:45:53,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057462679] [2024-11-10 17:45:53,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:53,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 17:45:53,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:53,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 17:45:53,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2024-11-10 17:45:56,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 178 [2024-11-10 17:45:56,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 148 transitions, 804 flow. Second operand has 27 states, 27 states have (on average 94.92592592592592) internal successors, (2563), 27 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:56,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:56,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 178 [2024-11-10 17:45:56,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:58,174 INFO L124 PetriNetUnfolderBase]: 2208/4916 cut-off events. [2024-11-10 17:45:58,174 INFO L125 PetriNetUnfolderBase]: For 6425/6425 co-relation queries the response was YES. [2024-11-10 17:45:58,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13790 conditions, 4916 events. 2208/4916 cut-off events. For 6425/6425 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 30069 event pairs, 504 based on Foata normal form. 0/4850 useless extension candidates. Maximal degree in co-relation 13750. Up to 3026 conditions per place. [2024-11-10 17:45:58,199 INFO L140 encePairwiseOnDemand]: 150/178 looper letters, 192 selfloop transitions, 48 changer transitions 25/288 dead transitions. [2024-11-10 17:45:58,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 288 transitions, 1978 flow [2024-11-10 17:45:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-10 17:45:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-10 17:45:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2901 transitions. [2024-11-10 17:45:58,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5619914761720264 [2024-11-10 17:45:58,202 INFO L175 Difference]: Start difference. First operand has 164 places, 148 transitions, 804 flow. Second operand 29 states and 2901 transitions. [2024-11-10 17:45:58,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 288 transitions, 1978 flow [2024-11-10 17:45:58,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 288 transitions, 1970 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 17:45:58,220 INFO L231 Difference]: Finished difference. Result has 205 places, 182 transitions, 1266 flow [2024-11-10 17:45:58,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1266, PETRI_PLACES=205, PETRI_TRANSITIONS=182} [2024-11-10 17:45:58,221 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, 39 predicate places. [2024-11-10 17:45:58,221 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 182 transitions, 1266 flow [2024-11-10 17:45:58,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 94.92592592592592) internal successors, (2563), 27 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:58,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:58,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:58,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-10 17:45:58,222 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:45:58,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:58,222 INFO L85 PathProgramCache]: Analyzing trace with hash 447853177, now seen corresponding path program 3 times [2024-11-10 17:45:58,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:58,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088991260] [2024-11-10 17:45:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:58,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:00,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:00,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088991260] [2024-11-10 17:46:00,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088991260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:46:00,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:46:00,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2024-11-10 17:46:00,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551150721] [2024-11-10 17:46:00,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:46:00,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 17:46:00,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:00,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 17:46:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2024-11-10 17:46:04,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 178 [2024-11-10 17:46:04,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 182 transitions, 1266 flow. Second operand has 28 states, 28 states have (on average 94.85714285714286) internal successors, (2656), 28 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:04,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:04,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 178 [2024-11-10 17:46:04,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:05,904 INFO L124 PetriNetUnfolderBase]: 2447/5455 cut-off events. [2024-11-10 17:46:05,904 INFO L125 PetriNetUnfolderBase]: For 15716/15716 co-relation queries the response was YES. [2024-11-10 17:46:05,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17132 conditions, 5455 events. 2447/5455 cut-off events. For 15716/15716 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 34527 event pairs, 540 based on Foata normal form. 0/5385 useless extension candidates. Maximal degree in co-relation 17075. Up to 3458 conditions per place. [2024-11-10 17:46:05,936 INFO L140 encePairwiseOnDemand]: 150/178 looper letters, 226 selfloop transitions, 50 changer transitions 27/326 dead transitions. [2024-11-10 17:46:05,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 326 transitions, 2664 flow [2024-11-10 17:46:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-10 17:46:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-10 17:46:05,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2907 transitions. [2024-11-10 17:46:05,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5631538163502519 [2024-11-10 17:46:05,942 INFO L175 Difference]: Start difference. First operand has 205 places, 182 transitions, 1266 flow. Second operand 29 states and 2907 transitions. [2024-11-10 17:46:05,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 326 transitions, 2664 flow [2024-11-10 17:46:05,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 326 transitions, 2551 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-11-10 17:46:05,973 INFO L231 Difference]: Finished difference. Result has 244 places, 216 transitions, 1729 flow [2024-11-10 17:46:05,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1729, PETRI_PLACES=244, PETRI_TRANSITIONS=216} [2024-11-10 17:46:05,973 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, 78 predicate places. [2024-11-10 17:46:05,973 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 216 transitions, 1729 flow [2024-11-10 17:46:05,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 94.85714285714286) internal successors, (2656), 28 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:05,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:05,974 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:05,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-10 17:46:05,975 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:46:05,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:05,975 INFO L85 PathProgramCache]: Analyzing trace with hash -191392271, now seen corresponding path program 4 times [2024-11-10 17:46:05,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:05,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699527902] [2024-11-10 17:46:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:05,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:07,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:07,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699527902] [2024-11-10 17:46:07,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699527902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:46:07,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:46:07,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-10 17:46:07,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412271287] [2024-11-10 17:46:07,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:46:07,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 17:46:07,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:07,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 17:46:07,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2024-11-10 17:46:10,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 178 [2024-11-10 17:46:10,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 216 transitions, 1729 flow. Second operand has 27 states, 27 states have (on average 94.92592592592592) internal successors, (2563), 27 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:10,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:10,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 178 [2024-11-10 17:46:10,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:12,602 INFO L124 PetriNetUnfolderBase]: 2680/5978 cut-off events. [2024-11-10 17:46:12,602 INFO L125 PetriNetUnfolderBase]: For 30688/30688 co-relation queries the response was YES. [2024-11-10 17:46:12,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20541 conditions, 5978 events. 2680/5978 cut-off events. For 30688/30688 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 39042 event pairs, 658 based on Foata normal form. 0/5902 useless extension candidates. Maximal degree in co-relation 20467. Up to 3886 conditions per place. [2024-11-10 17:46:12,648 INFO L140 encePairwiseOnDemand]: 150/178 looper letters, 254 selfloop transitions, 53 changer transitions 29/359 dead transitions. [2024-11-10 17:46:12,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 359 transitions, 3312 flow [2024-11-10 17:46:12,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-10 17:46:12,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-10 17:46:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2908 transitions. [2024-11-10 17:46:12,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5633475397132894 [2024-11-10 17:46:12,650 INFO L175 Difference]: Start difference. First operand has 244 places, 216 transitions, 1729 flow. Second operand 29 states and 2908 transitions. [2024-11-10 17:46:12,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 359 transitions, 3312 flow [2024-11-10 17:46:12,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 359 transitions, 3099 flow, removed 97 selfloop flow, removed 6 redundant places. [2024-11-10 17:46:12,702 INFO L231 Difference]: Finished difference. Result has 281 places, 247 transitions, 2166 flow [2024-11-10 17:46:12,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2166, PETRI_PLACES=281, PETRI_TRANSITIONS=247} [2024-11-10 17:46:12,702 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, 115 predicate places. [2024-11-10 17:46:12,703 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 247 transitions, 2166 flow [2024-11-10 17:46:12,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 94.92592592592592) internal successors, (2563), 27 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:12,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:12,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:12,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-10 17:46:12,704 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:46:12,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:12,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1115855417, now seen corresponding path program 5 times [2024-11-10 17:46:12,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:12,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557129048] [2024-11-10 17:46:12,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:12,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:14,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:14,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557129048] [2024-11-10 17:46:14,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557129048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:46:14,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:46:14,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-10 17:46:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023424928] [2024-11-10 17:46:14,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:46:14,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 17:46:14,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:14,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 17:46:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2024-11-10 17:46:17,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 178 [2024-11-10 17:46:17,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 247 transitions, 2166 flow. Second operand has 27 states, 27 states have (on average 94.92592592592592) internal successors, (2563), 27 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:17,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:17,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 178 [2024-11-10 17:46:17,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:19,655 INFO L124 PetriNetUnfolderBase]: 2981/6674 cut-off events. [2024-11-10 17:46:19,656 INFO L125 PetriNetUnfolderBase]: For 52887/52887 co-relation queries the response was YES. [2024-11-10 17:46:19,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24548 conditions, 6674 events. 2981/6674 cut-off events. For 52887/52887 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 45148 event pairs, 615 based on Foata normal form. 0/6602 useless extension candidates. Maximal degree in co-relation 24458. Up to 3431 conditions per place. [2024-11-10 17:46:19,703 INFO L140 encePairwiseOnDemand]: 149/178 looper letters, 294 selfloop transitions, 60 changer transitions 41/418 dead transitions. [2024-11-10 17:46:19,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 418 transitions, 4217 flow [2024-11-10 17:46:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-10 17:46:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-10 17:46:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2934 transitions. [2024-11-10 17:46:19,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5683843471522666 [2024-11-10 17:46:19,706 INFO L175 Difference]: Start difference. First operand has 281 places, 247 transitions, 2166 flow. Second operand 29 states and 2934 transitions. [2024-11-10 17:46:19,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 418 transitions, 4217 flow [2024-11-10 17:46:19,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 418 transitions, 3902 flow, removed 139 selfloop flow, removed 8 redundant places. [2024-11-10 17:46:19,789 INFO L231 Difference]: Finished difference. Result has 316 places, 281 transitions, 2657 flow [2024-11-10 17:46:19,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2657, PETRI_PLACES=316, PETRI_TRANSITIONS=281} [2024-11-10 17:46:19,790 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, 150 predicate places. [2024-11-10 17:46:19,790 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 281 transitions, 2657 flow [2024-11-10 17:46:19,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 94.92592592592592) internal successors, (2563), 27 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:19,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:19,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:19,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-10 17:46:19,791 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:46:19,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:19,791 INFO L85 PathProgramCache]: Analyzing trace with hash 455382379, now seen corresponding path program 6 times [2024-11-10 17:46:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:19,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73705883] [2024-11-10 17:46:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:19,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:22,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:22,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73705883] [2024-11-10 17:46:22,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73705883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:46:22,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:46:22,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2024-11-10 17:46:22,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534024492] [2024-11-10 17:46:22,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:46:22,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 17:46:22,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:22,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 17:46:22,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2024-11-10 17:46:27,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 178 [2024-11-10 17:46:27,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 281 transitions, 2657 flow. Second operand has 28 states, 28 states have (on average 94.85714285714286) internal successors, (2656), 28 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:27,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:27,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 178 [2024-11-10 17:46:27,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:30,113 INFO L124 PetriNetUnfolderBase]: 3180/7112 cut-off events. [2024-11-10 17:46:30,115 INFO L125 PetriNetUnfolderBase]: For 79370/79376 co-relation queries the response was YES. [2024-11-10 17:46:30,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27981 conditions, 7112 events. 3180/7112 cut-off events. For 79370/79376 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 48928 event pairs, 640 based on Foata normal form. 6/7050 useless extension candidates. Maximal degree in co-relation 27875. Up to 3642 conditions per place. [2024-11-10 17:46:30,169 INFO L140 encePairwiseOnDemand]: 148/178 looper letters, 320 selfloop transitions, 88 changer transitions 46/477 dead transitions. [2024-11-10 17:46:30,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 477 transitions, 5057 flow [2024-11-10 17:46:30,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-10 17:46:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-10 17:46:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3332 transitions. [2024-11-10 17:46:30,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5672454885938032 [2024-11-10 17:46:30,172 INFO L175 Difference]: Start difference. First operand has 316 places, 281 transitions, 2657 flow. Second operand 33 states and 3332 transitions. [2024-11-10 17:46:30,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 477 transitions, 5057 flow [2024-11-10 17:46:30,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 477 transitions, 4590 flow, removed 215 selfloop flow, removed 8 redundant places. [2024-11-10 17:46:30,406 INFO L231 Difference]: Finished difference. Result has 354 places, 316 transitions, 3198 flow [2024-11-10 17:46:30,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=2236, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3198, PETRI_PLACES=354, PETRI_TRANSITIONS=316} [2024-11-10 17:46:30,407 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, 188 predicate places. [2024-11-10 17:46:30,407 INFO L471 AbstractCegarLoop]: Abstraction has has 354 places, 316 transitions, 3198 flow [2024-11-10 17:46:30,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 94.85714285714286) internal successors, (2656), 28 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:30,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:30,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:30,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-10 17:46:30,408 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:46:30,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:30,408 INFO L85 PathProgramCache]: Analyzing trace with hash -122897303, now seen corresponding path program 7 times [2024-11-10 17:46:30,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:30,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298937535] [2024-11-10 17:46:30,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:30,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:46:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:32,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:46:32,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298937535] [2024-11-10 17:46:32,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298937535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:46:32,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:46:32,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-10 17:46:32,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616479039] [2024-11-10 17:46:32,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:46:32,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 17:46:32,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:32,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 17:46:32,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2024-11-10 17:46:35,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 178 [2024-11-10 17:46:36,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 316 transitions, 3198 flow. Second operand has 27 states, 27 states have (on average 95.88888888888889) internal successors, (2589), 27 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:36,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:46:36,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 178 [2024-11-10 17:46:36,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:46:38,439 INFO L124 PetriNetUnfolderBase]: 3179/7027 cut-off events. [2024-11-10 17:46:38,439 INFO L125 PetriNetUnfolderBase]: For 105017/105023 co-relation queries the response was YES. [2024-11-10 17:46:38,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29515 conditions, 7027 events. 3179/7027 cut-off events. For 105017/105023 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 47924 event pairs, 637 based on Foata normal form. 6/6953 useless extension candidates. Maximal degree in co-relation 29394. Up to 3202 conditions per place. [2024-11-10 17:46:38,500 INFO L140 encePairwiseOnDemand]: 152/178 looper letters, 320 selfloop transitions, 118 changer transitions 38/500 dead transitions. [2024-11-10 17:46:38,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 500 transitions, 5505 flow [2024-11-10 17:46:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-10 17:46:38,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-10 17:46:38,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3364 transitions. [2024-11-10 17:46:38,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5726932243786176 [2024-11-10 17:46:38,502 INFO L175 Difference]: Start difference. First operand has 354 places, 316 transitions, 3198 flow. Second operand 33 states and 3364 transitions. [2024-11-10 17:46:38,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 500 transitions, 5505 flow [2024-11-10 17:46:38,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 500 transitions, 4935 flow, removed 247 selfloop flow, removed 11 redundant places. [2024-11-10 17:46:38,688 INFO L231 Difference]: Finished difference. Result has 384 places, 338 transitions, 3558 flow [2024-11-10 17:46:38,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3558, PETRI_PLACES=384, PETRI_TRANSITIONS=338} [2024-11-10 17:46:38,689 INFO L277 CegarLoopForPetriNet]: 166 programPoint places, 218 predicate places. [2024-11-10 17:46:38,689 INFO L471 AbstractCegarLoop]: Abstraction has has 384 places, 338 transitions, 3558 flow [2024-11-10 17:46:38,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 95.88888888888889) internal successors, (2589), 27 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:46:38,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:46:38,690 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:46:38,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-10 17:46:38,690 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-10 17:46:38,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:46:38,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1575059907, now seen corresponding path program 8 times [2024-11-10 17:46:38,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:46:38,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784226429] [2024-11-10 17:46:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:46:38,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:46:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat