./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 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:17:50,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:17:50,121 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:17:50,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:17:50,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:17:50,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:17:50,157 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:17:50,158 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:17:50,158 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:17:50,158 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:17:50,159 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:17:50,159 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:17:50,159 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:17:50,159 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:17:50,160 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:17:50,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:17:50,164 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:17:50,164 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:17:50,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:17:50,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:17:50,165 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:17:50,166 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:17:50,166 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:17:50,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:17:50,166 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:17:50,166 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:17:50,167 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:17:50,167 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:17:50,167 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:17:50,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:17:50,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:17:50,168 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:17:50,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:17:50,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:17:50,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:17:50,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:17:50,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:17:50,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:17:50,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:17:50,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:17:50,171 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:17:50,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:17:50,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2024-11-22 21:17:50,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:17:50,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:17:50,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:17:50,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:17:50,393 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:17:50,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue.i [2024-11-22 21:17:51,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:17:52,087 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:17:52,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-11-22 21:17:52,111 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1427f3aa/6de91941bb624065b1e7cd9fc4dbe352/FLAG2597409bd [2024-11-22 21:17:52,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1427f3aa/6de91941bb624065b1e7cd9fc4dbe352 [2024-11-22 21:17:52,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:17:52,380 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:17:52,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:17:52,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:17:52,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:17:52,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:52,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b242af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52, skipping insertion in model container [2024-11-22 21:17:52,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:52,431 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:17:52,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:17:52,781 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:17:52,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:17:52,922 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:17:52,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52 WrapperNode [2024-11-22 21:17:52,923 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:17:52,924 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:17:52,924 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:17:52,924 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:17:52,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:52,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:52,966 INFO L138 Inliner]: procedures = 274, calls = 107, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 295 [2024-11-22 21:17:52,967 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:17:52,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:17:52,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:17:52,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:17:52,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:52,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:52,979 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:52,994 INFO L175 MemorySlicer]: Split 92 memory accesses to 5 slices as follows [2, 54, 8, 5, 23]. 59 percent of accesses are in the largest equivalence class. The 58 initializations are split as follows [2, 23, 8, 5, 20]. The 16 writes are split as follows [0, 14, 0, 0, 2]. [2024-11-22 21:17:52,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:52,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:53,001 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:53,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:53,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:53,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:53,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:17:53,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:17:53,010 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:17:53,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:17:53,011 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52" (1/1) ... [2024-11-22 21:17:53,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:17:53,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:17:53,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:17:53,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:17:53,071 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-22 21:17:53,071 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-22 21:17:53,071 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-22 21:17:53,071 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-22 21:17:53,071 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 21:17:53,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:17:53,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:17:53,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 21:17:53,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 21:17:53,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 21:17:53,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:17:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:17:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 21:17:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 21:17:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 21:17:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 21:17:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:17:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:17:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:17:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 21:17:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 21:17:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 21:17:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:17:53,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:17:53,077 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:17:53,210 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:17:53,211 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:17:53,630 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:17:53,630 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:17:54,015 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:17:54,016 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 21:17:54,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:17:54 BoogieIcfgContainer [2024-11-22 21:17:54,017 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:17:54,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:17:54,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:17:54,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:17:54,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:17:52" (1/3) ... [2024-11-22 21:17:54,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e37b24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:17:54, skipping insertion in model container [2024-11-22 21:17:54,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:52" (2/3) ... [2024-11-22 21:17:54,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e37b24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:17:54, skipping insertion in model container [2024-11-22 21:17:54,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:17:54" (3/3) ... [2024-11-22 21:17:54,025 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-11-22 21:17:54,038 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:17:54,039 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2024-11-22 21:17:54,039 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:17:54,147 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 21:17:54,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 358 flow [2024-11-22 21:17:54,238 INFO L124 PetriNetUnfolderBase]: 14/170 cut-off events. [2024-11-22 21:17:54,239 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:17:54,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 14/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 528 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2024-11-22 21:17:54,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 172 transitions, 358 flow [2024-11-22 21:17:54,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 169 transitions, 350 flow [2024-11-22 21:17:54,265 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:17:54,272 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;@417779a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:17:54,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 134 error locations. [2024-11-22 21:17:54,276 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:17:54,276 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-22 21:17:54,276 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:17:54,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:17:54,277 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-22 21:17:54,277 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:17:54,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:17:54,282 INFO L85 PathProgramCache]: Analyzing trace with hash 25066, now seen corresponding path program 1 times [2024-11-22 21:17:54,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:17:54,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697964121] [2024-11-22 21:17:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:17:54,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:17:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:17:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:17:54,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:17:54,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697964121] [2024-11-22 21:17:54,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697964121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:17:54,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:17:54,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:17:54,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764879379] [2024-11-22 21:17:54,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:17:54,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:17:54,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:17:54,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:17:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:17:54,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-22 21:17:54,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 169 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:17:54,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:17:54,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-22 21:17:54,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:17:55,391 INFO L124 PetriNetUnfolderBase]: 1744/4652 cut-off events. [2024-11-22 21:17:55,392 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-22 21:17:55,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7477 conditions, 4652 events. 1744/4652 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37088 event pairs, 1393 based on Foata normal form. 182/3586 useless extension candidates. Maximal degree in co-relation 7362. Up to 2744 conditions per place. [2024-11-22 21:17:55,424 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 57 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2024-11-22 21:17:55,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 153 transitions, 436 flow [2024-11-22 21:17:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:17:55,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:17:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2024-11-22 21:17:55,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7054263565891473 [2024-11-22 21:17:55,438 INFO L175 Difference]: Start difference. First operand has 162 places, 169 transitions, 350 flow. Second operand 3 states and 364 transitions. [2024-11-22 21:17:55,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 153 transitions, 436 flow [2024-11-22 21:17:55,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 153 transitions, 428 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:17:55,445 INFO L231 Difference]: Finished difference. Result has 150 places, 153 transitions, 314 flow [2024-11-22 21:17:55,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=150, PETRI_TRANSITIONS=153} [2024-11-22 21:17:55,454 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -12 predicate places. [2024-11-22 21:17:55,454 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 153 transitions, 314 flow [2024-11-22 21:17:55,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:17:55,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:17:55,454 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-22 21:17:55,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:17:55,455 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:17:55,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:17:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash 25067, now seen corresponding path program 1 times [2024-11-22 21:17:55,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:17:55,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617558578] [2024-11-22 21:17:55,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:17:55,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:17:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:17:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:17:55,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:17:55,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617558578] [2024-11-22 21:17:55,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617558578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:17:55,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:17:55,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:17:55,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696095097] [2024-11-22 21:17:55,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:17:55,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:17:55,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:17:55,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:17:55,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:17:55,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-22 21:17:55,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 153 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:17:55,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:17:55,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-22 21:17:55,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:17:56,060 INFO L124 PetriNetUnfolderBase]: 1744/4649 cut-off events. [2024-11-22 21:17:56,061 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-22 21:17:56,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7428 conditions, 4649 events. 1744/4649 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37018 event pairs, 1393 based on Foata normal form. 3/3406 useless extension candidates. Maximal degree in co-relation 7417. Up to 2744 conditions per place. [2024-11-22 21:17:56,084 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 57 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2024-11-22 21:17:56,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 150 transitions, 426 flow [2024-11-22 21:17:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:17:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:17:56,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2024-11-22 21:17:56,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6957364341085271 [2024-11-22 21:17:56,090 INFO L175 Difference]: Start difference. First operand has 150 places, 153 transitions, 314 flow. Second operand 3 states and 359 transitions. [2024-11-22 21:17:56,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 150 transitions, 426 flow [2024-11-22 21:17:56,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 150 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:17:56,093 INFO L231 Difference]: Finished difference. Result has 147 places, 150 transitions, 308 flow [2024-11-22 21:17:56,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=147, PETRI_TRANSITIONS=150} [2024-11-22 21:17:56,094 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -15 predicate places. [2024-11-22 21:17:56,095 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 150 transitions, 308 flow [2024-11-22 21:17:56,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:17:56,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:17:56,095 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:17:56,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:17:56,096 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:17:56,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:17:56,097 INFO L85 PathProgramCache]: Analyzing trace with hash 747506238, now seen corresponding path program 1 times [2024-11-22 21:17:56,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:17:56,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694673395] [2024-11-22 21:17:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:17:56,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:17:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:17:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:17:56,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:17:56,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694673395] [2024-11-22 21:17:56,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694673395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:17:56,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:17:56,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:17:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618645239] [2024-11-22 21:17:56,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:17:56,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:17:56,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:17:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:17:56,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:17:56,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-22 21:17:56,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 150 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:17:56,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:17:56,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-22 21:17:56,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:17:56,723 INFO L124 PetriNetUnfolderBase]: 1744/4647 cut-off events. [2024-11-22 21:17:56,723 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-22 21:17:56,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7426 conditions, 4647 events. 1744/4647 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37009 event pairs, 1393 based on Foata normal form. 1/3404 useless extension candidates. Maximal degree in co-relation 7415. Up to 2743 conditions per place. [2024-11-22 21:17:56,749 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 56 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2024-11-22 21:17:56,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 148 transitions, 422 flow [2024-11-22 21:17:56,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:17:56,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:17:56,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2024-11-22 21:17:56,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6700581395348837 [2024-11-22 21:17:56,751 INFO L175 Difference]: Start difference. First operand has 147 places, 150 transitions, 308 flow. Second operand 4 states and 461 transitions. [2024-11-22 21:17:56,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 148 transitions, 422 flow [2024-11-22 21:17:56,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 148 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:17:56,753 INFO L231 Difference]: Finished difference. Result has 146 places, 148 transitions, 306 flow [2024-11-22 21:17:56,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=146, PETRI_TRANSITIONS=148} [2024-11-22 21:17:56,754 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -16 predicate places. [2024-11-22 21:17:56,754 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 148 transitions, 306 flow [2024-11-22 21:17:56,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:17:56,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:17:56,755 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:17:56,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:17:56,755 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:17:56,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:17:56,755 INFO L85 PathProgramCache]: Analyzing trace with hash 747506239, now seen corresponding path program 1 times [2024-11-22 21:17:56,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:17:56,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687066055] [2024-11-22 21:17:56,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:17:56,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:17:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:17:56,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:17:56,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:17:56,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687066055] [2024-11-22 21:17:56,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687066055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:17:56,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:17:56,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:17:56,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661281133] [2024-11-22 21:17:56,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:17:56,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:17:56,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:17:56,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:17:56,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:17:56,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-22 21:17:56,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 148 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:17:56,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:17:56,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-22 21:17:56,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:17:57,242 INFO L124 PetriNetUnfolderBase]: 1744/4645 cut-off events. [2024-11-22 21:17:57,243 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-22 21:17:57,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7425 conditions, 4645 events. 1744/4645 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37079 event pairs, 1393 based on Foata normal form. 2/3404 useless extension candidates. Maximal degree in co-relation 7410. Up to 2743 conditions per place. [2024-11-22 21:17:57,265 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 56 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2024-11-22 21:17:57,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 146 transitions, 420 flow [2024-11-22 21:17:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:17:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:17:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2024-11-22 21:17:57,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6700581395348837 [2024-11-22 21:17:57,267 INFO L175 Difference]: Start difference. First operand has 146 places, 148 transitions, 306 flow. Second operand 4 states and 461 transitions. [2024-11-22 21:17:57,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 146 transitions, 420 flow [2024-11-22 21:17:57,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 146 transitions, 414 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:17:57,269 INFO L231 Difference]: Finished difference. Result has 144 places, 146 transitions, 302 flow [2024-11-22 21:17:57,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=144, PETRI_TRANSITIONS=146} [2024-11-22 21:17:57,270 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -18 predicate places. [2024-11-22 21:17:57,270 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 146 transitions, 302 flow [2024-11-22 21:17:57,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:17:57,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:17:57,271 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:17:57,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:17:57,271 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:17:57,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:17:57,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1029048543, now seen corresponding path program 1 times [2024-11-22 21:17:57,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:17:57,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876528866] [2024-11-22 21:17:57,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:17:57,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:17:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:17:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:17:57,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:17:57,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876528866] [2024-11-22 21:17:57,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876528866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:17:57,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:17:57,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:17:57,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382799708] [2024-11-22 21:17:57,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:17:57,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:17:57,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:17:57,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:17:57,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:17:57,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 172 [2024-11-22 21:17:57,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 146 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:17:57,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:17:57,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 172 [2024-11-22 21:17:57,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:17:58,035 INFO L124 PetriNetUnfolderBase]: 1703/4144 cut-off events. [2024-11-22 21:17:58,035 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-22 21:17:58,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6880 conditions, 4144 events. 1703/4144 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 30735 event pairs, 702 based on Foata normal form. 204/3608 useless extension candidates. Maximal degree in co-relation 6865. Up to 1413 conditions per place. [2024-11-22 21:17:58,051 INFO L140 encePairwiseOnDemand]: 151/172 looper letters, 73 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2024-11-22 21:17:58,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 149 transitions, 465 flow [2024-11-22 21:17:58,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:17:58,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:17:58,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 438 transitions. [2024-11-22 21:17:58,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6366279069767442 [2024-11-22 21:17:58,053 INFO L175 Difference]: Start difference. First operand has 144 places, 146 transitions, 302 flow. Second operand 4 states and 438 transitions. [2024-11-22 21:17:58,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 149 transitions, 465 flow [2024-11-22 21:17:58,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 149 transitions, 459 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:17:58,056 INFO L231 Difference]: Finished difference. Result has 128 places, 130 transitions, 274 flow [2024-11-22 21:17:58,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=128, PETRI_TRANSITIONS=130} [2024-11-22 21:17:58,059 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -34 predicate places. [2024-11-22 21:17:58,059 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 130 transitions, 274 flow [2024-11-22 21:17:58,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:17:58,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:17:58,059 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:17:58,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:17:58,059 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:17:58,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:17:58,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1029048544, now seen corresponding path program 1 times [2024-11-22 21:17:58,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:17:58,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763658312] [2024-11-22 21:17:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:17:58,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:17:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:17:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:17:58,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:17:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763658312] [2024-11-22 21:17:58,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763658312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:17:58,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:17:58,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:17:58,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221232163] [2024-11-22 21:17:58,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:17:58,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:17:58,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:17:58,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:17:58,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:17:58,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 172 [2024-11-22 21:17:58,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 130 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:17:58,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:17:58,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 172 [2024-11-22 21:17:58,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:17:59,181 INFO L124 PetriNetUnfolderBase]: 1703/3675 cut-off events. [2024-11-22 21:17:59,182 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-22 21:17:59,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6546 conditions, 3675 events. 1703/3675 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 24520 event pairs, 702 based on Foata normal form. 204/3340 useless extension candidates. Maximal degree in co-relation 2518. Up to 1412 conditions per place. [2024-11-22 21:17:59,210 INFO L140 encePairwiseOnDemand]: 151/172 looper letters, 72 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2024-11-22 21:17:59,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 135 transitions, 443 flow [2024-11-22 21:17:59,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:17:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:17:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 528 transitions. [2024-11-22 21:17:59,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2024-11-22 21:17:59,215 INFO L175 Difference]: Start difference. First operand has 128 places, 130 transitions, 274 flow. Second operand 5 states and 528 transitions. [2024-11-22 21:17:59,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 135 transitions, 443 flow [2024-11-22 21:17:59,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 135 transitions, 433 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:17:59,219 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 250 flow [2024-11-22 21:17:59,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=115, PETRI_TRANSITIONS=116} [2024-11-22 21:17:59,223 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -47 predicate places. [2024-11-22 21:17:59,224 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 250 flow [2024-11-22 21:17:59,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:17:59,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:17:59,224 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:17:59,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:17:59,224 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:17:59,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:17:59,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1835734632, now seen corresponding path program 1 times [2024-11-22 21:17:59,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:17:59,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068488172] [2024-11-22 21:17:59,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:17:59,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:17:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:17:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:17:59,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:17:59,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068488172] [2024-11-22 21:17:59,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068488172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:17:59,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:17:59,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 21:17:59,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402960851] [2024-11-22 21:17:59,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:17:59,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 21:17:59,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:17:59,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 21:17:59,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-22 21:18:00,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 172 [2024-11-22 21:18:00,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 116 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:00,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:00,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 172 [2024-11-22 21:18:00,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:00,846 INFO L124 PetriNetUnfolderBase]: 2502/5391 cut-off events. [2024-11-22 21:18:00,847 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-22 21:18:00,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9549 conditions, 5391 events. 2502/5391 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 38753 event pairs, 536 based on Foata normal form. 0/4393 useless extension candidates. Maximal degree in co-relation 3717. Up to 3436 conditions per place. [2024-11-22 21:18:00,869 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 124 selfloop transitions, 11 changer transitions 0/183 dead transitions. [2024-11-22 21:18:00,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 183 transitions, 659 flow [2024-11-22 21:18:00,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:18:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:18:00,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 669 transitions. [2024-11-22 21:18:00,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5556478405315615 [2024-11-22 21:18:00,871 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 250 flow. Second operand 7 states and 669 transitions. [2024-11-22 21:18:00,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 183 transitions, 659 flow [2024-11-22 21:18:00,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 183 transitions, 643 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:18:00,876 INFO L231 Difference]: Finished difference. Result has 121 places, 126 transitions, 310 flow [2024-11-22 21:18:00,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=121, PETRI_TRANSITIONS=126} [2024-11-22 21:18:00,879 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -41 predicate places. [2024-11-22 21:18:00,879 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 126 transitions, 310 flow [2024-11-22 21:18:00,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:00,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:00,883 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:18:00,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:18:00,883 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:00,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:00,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1409040039, now seen corresponding path program 1 times [2024-11-22 21:18:00,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:00,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154113210] [2024-11-22 21:18:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:00,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:00,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:00,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:00,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154113210] [2024-11-22 21:18:00,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154113210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:00,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:00,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:18:00,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392305284] [2024-11-22 21:18:00,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:00,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:18:00,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:00,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:18:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:18:00,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-11-22 21:18:00,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 126 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:00,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:00,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-11-22 21:18:00,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:01,343 INFO L124 PetriNetUnfolderBase]: 1382/3218 cut-off events. [2024-11-22 21:18:01,343 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-22 21:18:01,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5612 conditions, 3218 events. 1382/3218 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19602 event pairs, 703 based on Foata normal form. 55/2726 useless extension candidates. Maximal degree in co-relation 5605. Up to 1211 conditions per place. [2024-11-22 21:18:01,354 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 80 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2024-11-22 21:18:01,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 139 transitions, 476 flow [2024-11-22 21:18:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:18:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:18:01,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2024-11-22 21:18:01,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7558139534883721 [2024-11-22 21:18:01,356 INFO L175 Difference]: Start difference. First operand has 121 places, 126 transitions, 310 flow. Second operand 3 states and 390 transitions. [2024-11-22 21:18:01,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 139 transitions, 476 flow [2024-11-22 21:18:01,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 139 transitions, 451 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-22 21:18:01,358 INFO L231 Difference]: Finished difference. Result has 114 places, 116 transitions, 249 flow [2024-11-22 21:18:01,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=114, PETRI_TRANSITIONS=116} [2024-11-22 21:18:01,359 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -48 predicate places. [2024-11-22 21:18:01,359 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 116 transitions, 249 flow [2024-11-22 21:18:01,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:01,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:01,360 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:18:01,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:18:01,360 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:01,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:01,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1094290775, now seen corresponding path program 1 times [2024-11-22 21:18:01,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:01,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441771076] [2024-11-22 21:18:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:01,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:01,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:01,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441771076] [2024-11-22 21:18:01,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441771076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:01,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:01,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:18:01,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653204251] [2024-11-22 21:18:01,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:01,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:18:01,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:18:01,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:18:01,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-22 21:18:01,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 116 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:01,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:01,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-22 21:18:01,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:01,775 INFO L124 PetriNetUnfolderBase]: 1392/3289 cut-off events. [2024-11-22 21:18:01,776 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-22 21:18:01,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5671 conditions, 3289 events. 1392/3289 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20466 event pairs, 1089 based on Foata normal form. 77/2806 useless extension candidates. Maximal degree in co-relation 5666. Up to 2215 conditions per place. [2024-11-22 21:18:01,806 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 59 selfloop transitions, 1 changer transitions 0/113 dead transitions. [2024-11-22 21:18:01,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 363 flow [2024-11-22 21:18:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:18:01,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:18:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2024-11-22 21:18:01,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6957364341085271 [2024-11-22 21:18:01,807 INFO L175 Difference]: Start difference. First operand has 114 places, 116 transitions, 249 flow. Second operand 3 states and 359 transitions. [2024-11-22 21:18:01,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 363 flow [2024-11-22 21:18:01,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:18:01,809 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 242 flow [2024-11-22 21:18:01,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=112, PETRI_TRANSITIONS=113} [2024-11-22 21:18:01,810 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-11-22 21:18:01,810 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 242 flow [2024-11-22 21:18:01,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:01,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:01,811 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:18:01,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:18:01,811 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:01,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1094290776, now seen corresponding path program 1 times [2024-11-22 21:18:01,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:01,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782721517] [2024-11-22 21:18:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:01,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:01,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:01,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782721517] [2024-11-22 21:18:01,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782721517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:01,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:01,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:18:01,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181859648] [2024-11-22 21:18:01,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:01,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:18:01,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:01,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:18:01,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:18:01,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-22 21:18:01,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:01,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:01,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-22 21:18:01,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:02,182 INFO L124 PetriNetUnfolderBase]: 1392/3277 cut-off events. [2024-11-22 21:18:02,182 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-22 21:18:02,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 3277 events. 1392/3277 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20315 event pairs, 1089 based on Foata normal form. 0/2717 useless extension candidates. Maximal degree in co-relation 5641. Up to 2215 conditions per place. [2024-11-22 21:18:02,192 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 59 selfloop transitions, 1 changer transitions 0/112 dead transitions. [2024-11-22 21:18:02,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 112 transitions, 360 flow [2024-11-22 21:18:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:18:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:18:02,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2024-11-22 21:18:02,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7034883720930233 [2024-11-22 21:18:02,193 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 242 flow. Second operand 3 states and 363 transitions. [2024-11-22 21:18:02,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 112 transitions, 360 flow [2024-11-22 21:18:02,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:18:02,195 INFO L231 Difference]: Finished difference. Result has 112 places, 112 transitions, 241 flow [2024-11-22 21:18:02,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=112, PETRI_TRANSITIONS=112} [2024-11-22 21:18:02,196 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-11-22 21:18:02,196 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 112 transitions, 241 flow [2024-11-22 21:18:02,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:02,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:02,196 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:18:02,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 21:18:02,197 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:02,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:02,197 INFO L85 PathProgramCache]: Analyzing trace with hash -436723347, now seen corresponding path program 1 times [2024-11-22 21:18:02,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:02,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173669637] [2024-11-22 21:18:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:02,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:02,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:02,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173669637] [2024-11-22 21:18:02,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173669637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:02,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:02,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:18:02,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138620548] [2024-11-22 21:18:02,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:02,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:18:02,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:02,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:18:02,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:18:02,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-22 21:18:02,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 112 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:02,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:02,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-22 21:18:02,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:02,611 INFO L124 PetriNetUnfolderBase]: 1392/3253 cut-off events. [2024-11-22 21:18:02,612 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-22 21:18:02,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5623 conditions, 3253 events. 1392/3253 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20034 event pairs, 1074 based on Foata normal form. 12/2729 useless extension candidates. Maximal degree in co-relation 5618. Up to 2186 conditions per place. [2024-11-22 21:18:02,625 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 65 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2024-11-22 21:18:02,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 118 transitions, 390 flow [2024-11-22 21:18:02,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:18:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:18:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-11-22 21:18:02,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6816860465116279 [2024-11-22 21:18:02,626 INFO L175 Difference]: Start difference. First operand has 112 places, 112 transitions, 241 flow. Second operand 4 states and 469 transitions. [2024-11-22 21:18:02,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 118 transitions, 390 flow [2024-11-22 21:18:02,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 118 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:18:02,628 INFO L231 Difference]: Finished difference. Result has 112 places, 110 transitions, 242 flow [2024-11-22 21:18:02,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=112, PETRI_TRANSITIONS=110} [2024-11-22 21:18:02,629 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-11-22 21:18:02,629 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 110 transitions, 242 flow [2024-11-22 21:18:02,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:02,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:02,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:18:02,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 21:18:02,629 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:02,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:02,630 INFO L85 PathProgramCache]: Analyzing trace with hash -436723346, now seen corresponding path program 1 times [2024-11-22 21:18:02,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:02,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609829761] [2024-11-22 21:18:02,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:02,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:02,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:02,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609829761] [2024-11-22 21:18:02,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609829761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:02,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:02,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:18:02,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109763325] [2024-11-22 21:18:02,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:02,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:18:02,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:02,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:18:02,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:18:03,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-22 21:18:03,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:03,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:03,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-22 21:18:03,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:03,408 INFO L124 PetriNetUnfolderBase]: 1392/3229 cut-off events. [2024-11-22 21:18:03,408 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-22 21:18:03,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5625 conditions, 3229 events. 1392/3229 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 19773 event pairs, 1074 based on Foata normal form. 24/2729 useless extension candidates. Maximal degree in co-relation 5620. Up to 2185 conditions per place. [2024-11-22 21:18:03,417 INFO L140 encePairwiseOnDemand]: 165/172 looper letters, 64 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-11-22 21:18:03,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 393 flow [2024-11-22 21:18:03,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:18:03,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:18:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 565 transitions. [2024-11-22 21:18:03,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6569767441860465 [2024-11-22 21:18:03,419 INFO L175 Difference]: Start difference. First operand has 112 places, 110 transitions, 242 flow. Second operand 5 states and 565 transitions. [2024-11-22 21:18:03,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 393 flow [2024-11-22 21:18:03,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 116 transitions, 387 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:18:03,421 INFO L231 Difference]: Finished difference. Result has 111 places, 108 transitions, 242 flow [2024-11-22 21:18:03,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=111, PETRI_TRANSITIONS=108} [2024-11-22 21:18:03,422 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -51 predicate places. [2024-11-22 21:18:03,422 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 108 transitions, 242 flow [2024-11-22 21:18:03,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:03,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:03,423 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] [2024-11-22 21:18:03,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 21:18:03,423 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:03,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:03,424 INFO L85 PathProgramCache]: Analyzing trace with hash -653553668, now seen corresponding path program 1 times [2024-11-22 21:18:03,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:03,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885080533] [2024-11-22 21:18:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:03,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:03,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:03,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885080533] [2024-11-22 21:18:03,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885080533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:03,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:03,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:18:03,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833486292] [2024-11-22 21:18:03,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:03,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:18:03,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:03,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:18:03,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:18:03,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-11-22 21:18:03,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:03,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:03,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-11-22 21:18:03,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:03,668 INFO L124 PetriNetUnfolderBase]: 1380/3217 cut-off events. [2024-11-22 21:18:03,669 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-22 21:18:03,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5602 conditions, 3217 events. 1380/3217 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 19735 event pairs, 1074 based on Foata normal form. 0/2705 useless extension candidates. Maximal degree in co-relation 5597. Up to 2175 conditions per place. [2024-11-22 21:18:03,680 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 65 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-11-22 21:18:03,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 115 transitions, 391 flow [2024-11-22 21:18:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:18:03,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:18:03,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2024-11-22 21:18:03,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7228682170542635 [2024-11-22 21:18:03,681 INFO L175 Difference]: Start difference. First operand has 111 places, 108 transitions, 242 flow. Second operand 3 states and 373 transitions. [2024-11-22 21:18:03,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 115 transitions, 391 flow [2024-11-22 21:18:03,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 115 transitions, 381 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:18:03,683 INFO L231 Difference]: Finished difference. Result has 109 places, 107 transitions, 234 flow [2024-11-22 21:18:03,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=109, PETRI_TRANSITIONS=107} [2024-11-22 21:18:03,684 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -53 predicate places. [2024-11-22 21:18:03,684 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 107 transitions, 234 flow [2024-11-22 21:18:03,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:03,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:03,685 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] [2024-11-22 21:18:03,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 21:18:03,685 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:03,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:03,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1388772758, now seen corresponding path program 1 times [2024-11-22 21:18:03,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:03,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200659033] [2024-11-22 21:18:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:03,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:04,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:04,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200659033] [2024-11-22 21:18:04,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200659033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:04,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:04,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 21:18:04,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964371756] [2024-11-22 21:18:04,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:04,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:18:04,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:04,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:18:04,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:18:04,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-22 21:18:04,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 234 flow. Second operand has 10 states, 10 states have (on average 95.2) internal successors, (952), 10 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:04,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:04,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-22 21:18:04,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:04,959 INFO L124 PetriNetUnfolderBase]: 1717/3744 cut-off events. [2024-11-22 21:18:04,959 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-22 21:18:04,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6748 conditions, 3744 events. 1717/3744 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 22635 event pairs, 388 based on Foata normal form. 0/3242 useless extension candidates. Maximal degree in co-relation 6743. Up to 2364 conditions per place. [2024-11-22 21:18:04,972 INFO L140 encePairwiseOnDemand]: 159/172 looper letters, 116 selfloop transitions, 12 changer transitions 0/167 dead transitions. [2024-11-22 21:18:04,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 167 transitions, 620 flow [2024-11-22 21:18:04,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 21:18:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 21:18:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 965 transitions. [2024-11-22 21:18:04,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6233850129198967 [2024-11-22 21:18:04,975 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 234 flow. Second operand 9 states and 965 transitions. [2024-11-22 21:18:04,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 167 transitions, 620 flow [2024-11-22 21:18:04,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 167 transitions, 616 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:18:04,977 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 266 flow [2024-11-22 21:18:04,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=266, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-11-22 21:18:04,978 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -47 predicate places. [2024-11-22 21:18:04,978 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 266 flow [2024-11-22 21:18:04,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.2) internal successors, (952), 10 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:04,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:04,978 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] [2024-11-22 21:18:04,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 21:18:04,979 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:04,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:04,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1579885146, now seen corresponding path program 1 times [2024-11-22 21:18:04,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:04,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798359113] [2024-11-22 21:18:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:04,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:05,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:05,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798359113] [2024-11-22 21:18:05,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798359113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:05,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:05,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 21:18:05,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917554510] [2024-11-22 21:18:05,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:05,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 21:18:05,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:05,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 21:18:05,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-22 21:18:07,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-22 21:18:07,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 266 flow. Second operand has 15 states, 15 states have (on average 94.53333333333333) internal successors, (1418), 15 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:07,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:07,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-22 21:18:07,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:07,830 INFO L124 PetriNetUnfolderBase]: 1711/3617 cut-off events. [2024-11-22 21:18:07,831 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2024-11-22 21:18:07,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6914 conditions, 3617 events. 1711/3617 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 21446 event pairs, 438 based on Foata normal form. 0/3215 useless extension candidates. Maximal degree in co-relation 6908. Up to 2065 conditions per place. [2024-11-22 21:18:07,844 INFO L140 encePairwiseOnDemand]: 158/172 looper letters, 128 selfloop transitions, 13 changer transitions 0/177 dead transitions. [2024-11-22 21:18:07,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 177 transitions, 696 flow [2024-11-22 21:18:07,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 21:18:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 21:18:07,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1254 transitions. [2024-11-22 21:18:07,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6075581395348837 [2024-11-22 21:18:07,846 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 266 flow. Second operand 12 states and 1254 transitions. [2024-11-22 21:18:07,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 177 transitions, 696 flow [2024-11-22 21:18:07,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 177 transitions, 676 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-22 21:18:07,849 INFO L231 Difference]: Finished difference. Result has 116 places, 105 transitions, 272 flow [2024-11-22 21:18:07,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=272, PETRI_PLACES=116, PETRI_TRANSITIONS=105} [2024-11-22 21:18:07,850 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -46 predicate places. [2024-11-22 21:18:07,850 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 105 transitions, 272 flow [2024-11-22 21:18:07,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 94.53333333333333) internal successors, (1418), 15 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:07,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:07,851 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] [2024-11-22 21:18:07,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 21:18:07,851 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:07,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:07,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1431409847, now seen corresponding path program 1 times [2024-11-22 21:18:07,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:07,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180916586] [2024-11-22 21:18:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:07,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:08,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:08,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180916586] [2024-11-22 21:18:08,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180916586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:08,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:08,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 21:18:08,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538694268] [2024-11-22 21:18:08,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:08,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:18:08,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:18:08,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:18:09,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 172 [2024-11-22 21:18:09,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 105 transitions, 272 flow. Second operand has 11 states, 11 states have (on average 77.54545454545455) internal successors, (853), 11 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:09,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:09,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 172 [2024-11-22 21:18:09,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:09,851 INFO L124 PetriNetUnfolderBase]: 1766/3722 cut-off events. [2024-11-22 21:18:09,851 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-11-22 21:18:09,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7180 conditions, 3722 events. 1766/3722 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 22273 event pairs, 470 based on Foata normal form. 12/3314 useless extension candidates. Maximal degree in co-relation 7173. Up to 2181 conditions per place. [2024-11-22 21:18:09,863 INFO L140 encePairwiseOnDemand]: 160/172 looper letters, 122 selfloop transitions, 11 changer transitions 0/169 dead transitions. [2024-11-22 21:18:09,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 169 transitions, 675 flow [2024-11-22 21:18:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 21:18:09,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 21:18:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 880 transitions. [2024-11-22 21:18:09,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2024-11-22 21:18:09,865 INFO L175 Difference]: Start difference. First operand has 116 places, 105 transitions, 272 flow. Second operand 10 states and 880 transitions. [2024-11-22 21:18:09,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 169 transitions, 675 flow [2024-11-22 21:18:09,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 169 transitions, 653 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-22 21:18:09,868 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 290 flow [2024-11-22 21:18:09,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2024-11-22 21:18:09,869 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -44 predicate places. [2024-11-22 21:18:09,869 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 290 flow [2024-11-22 21:18:09,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.54545454545455) internal successors, (853), 11 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:09,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:09,869 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] [2024-11-22 21:18:09,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 21:18:09,869 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:09,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:09,870 INFO L85 PathProgramCache]: Analyzing trace with hash 429726208, now seen corresponding path program 1 times [2024-11-22 21:18:09,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:09,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174001612] [2024-11-22 21:18:09,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:09,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:09,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:09,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174001612] [2024-11-22 21:18:09,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174001612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:09,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:09,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:18:09,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268986462] [2024-11-22 21:18:09,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:09,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:18:09,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:09,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:18:09,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:18:09,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-11-22 21:18:09,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:09,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:09,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-11-22 21:18:09,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:10,357 INFO L124 PetriNetUnfolderBase]: 2436/5847 cut-off events. [2024-11-22 21:18:10,357 INFO L125 PetriNetUnfolderBase]: For 580/626 co-relation queries the response was YES. [2024-11-22 21:18:10,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10755 conditions, 5847 events. 2436/5847 cut-off events. For 580/626 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 43380 event pairs, 1149 based on Foata normal form. 134/5082 useless extension candidates. Maximal degree in co-relation 10745. Up to 2365 conditions per place. [2024-11-22 21:18:10,378 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 110 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2024-11-22 21:18:10,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 158 transitions, 665 flow [2024-11-22 21:18:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:18:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:18:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2024-11-22 21:18:10,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7926356589147286 [2024-11-22 21:18:10,380 INFO L175 Difference]: Start difference. First operand has 118 places, 107 transitions, 290 flow. Second operand 3 states and 409 transitions. [2024-11-22 21:18:10,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 158 transitions, 665 flow [2024-11-22 21:18:10,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 158 transitions, 635 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-22 21:18:10,384 INFO L231 Difference]: Finished difference. Result has 114 places, 108 transitions, 284 flow [2024-11-22 21:18:10,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=114, PETRI_TRANSITIONS=108} [2024-11-22 21:18:10,384 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -48 predicate places. [2024-11-22 21:18:10,384 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 108 transitions, 284 flow [2024-11-22 21:18:10,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:10,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:10,385 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] [2024-11-22 21:18:10,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 21:18:10,385 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:10,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:10,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1608969793, now seen corresponding path program 1 times [2024-11-22 21:18:10,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:10,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611420680] [2024-11-22 21:18:10,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:10,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:10,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:10,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611420680] [2024-11-22 21:18:10,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611420680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:10,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:10,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:18:10,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845127001] [2024-11-22 21:18:10,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:10,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:18:10,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:10,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:18:10,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:18:10,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-22 21:18:10,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 108 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:10,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:10,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-22 21:18:10,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:11,031 INFO L124 PetriNetUnfolderBase]: 3110/6180 cut-off events. [2024-11-22 21:18:11,031 INFO L125 PetriNetUnfolderBase]: For 1203/1203 co-relation queries the response was YES. [2024-11-22 21:18:11,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13113 conditions, 6180 events. 3110/6180 cut-off events. For 1203/1203 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 40198 event pairs, 1523 based on Foata normal form. 36/5825 useless extension candidates. Maximal degree in co-relation 13102. Up to 4154 conditions per place. [2024-11-22 21:18:11,048 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 94 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2024-11-22 21:18:11,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 142 transitions, 576 flow [2024-11-22 21:18:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:18:11,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:18:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 491 transitions. [2024-11-22 21:18:11,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7136627906976745 [2024-11-22 21:18:11,050 INFO L175 Difference]: Start difference. First operand has 114 places, 108 transitions, 284 flow. Second operand 4 states and 491 transitions. [2024-11-22 21:18:11,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 142 transitions, 576 flow [2024-11-22 21:18:11,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 142 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:18:11,054 INFO L231 Difference]: Finished difference. Result has 117 places, 109 transitions, 298 flow [2024-11-22 21:18:11,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=117, PETRI_TRANSITIONS=109} [2024-11-22 21:18:11,054 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -45 predicate places. [2024-11-22 21:18:11,054 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 109 transitions, 298 flow [2024-11-22 21:18:11,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:11,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:11,055 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:18:11,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 21:18:11,055 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:11,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:11,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1130291866, now seen corresponding path program 1 times [2024-11-22 21:18:11,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:11,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161218690] [2024-11-22 21:18:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:11,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:11,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:11,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:11,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161218690] [2024-11-22 21:18:11,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161218690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:11,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:11,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:18:11,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524247372] [2024-11-22 21:18:11,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:11,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:18:11,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:11,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:18:11,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:18:11,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-22 21:18:11,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 109 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:11,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:11,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-22 21:18:11,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:11,401 INFO L124 PetriNetUnfolderBase]: 2103/4653 cut-off events. [2024-11-22 21:18:11,401 INFO L125 PetriNetUnfolderBase]: For 880/880 co-relation queries the response was YES. [2024-11-22 21:18:11,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9543 conditions, 4653 events. 2103/4653 cut-off events. For 880/880 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 30042 event pairs, 1116 based on Foata normal form. 94/4284 useless extension candidates. Maximal degree in co-relation 9531. Up to 1766 conditions per place. [2024-11-22 21:18:11,422 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 76 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2024-11-22 21:18:11,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 123 transitions, 496 flow [2024-11-22 21:18:11,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:18:11,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:18:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2024-11-22 21:18:11,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7286821705426356 [2024-11-22 21:18:11,424 INFO L175 Difference]: Start difference. First operand has 117 places, 109 transitions, 298 flow. Second operand 3 states and 376 transitions. [2024-11-22 21:18:11,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 123 transitions, 496 flow [2024-11-22 21:18:11,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 123 transitions, 484 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-22 21:18:11,429 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 295 flow [2024-11-22 21:18:11,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2024-11-22 21:18:11,429 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -44 predicate places. [2024-11-22 21:18:11,429 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 295 flow [2024-11-22 21:18:11,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:11,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:11,430 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] [2024-11-22 21:18:11,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 21:18:11,430 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:11,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:11,430 INFO L85 PathProgramCache]: Analyzing trace with hash 852801930, now seen corresponding path program 1 times [2024-11-22 21:18:11,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:11,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755121731] [2024-11-22 21:18:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:11,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:11,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:11,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755121731] [2024-11-22 21:18:11,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755121731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:11,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:11,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:18:11,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232147594] [2024-11-22 21:18:11,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:11,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:18:11,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:11,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:18:11,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:18:11,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-11-22 21:18:11,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:11,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:11,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-11-22 21:18:11,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:11,758 INFO L124 PetriNetUnfolderBase]: 1272/3141 cut-off events. [2024-11-22 21:18:11,758 INFO L125 PetriNetUnfolderBase]: For 888/888 co-relation queries the response was YES. [2024-11-22 21:18:11,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6604 conditions, 3141 events. 1272/3141 cut-off events. For 888/888 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 18368 event pairs, 291 based on Foata normal form. 190/3036 useless extension candidates. Maximal degree in co-relation 6591. Up to 1595 conditions per place. [2024-11-22 21:18:11,766 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 68 selfloop transitions, 6 changer transitions 0/120 dead transitions. [2024-11-22 21:18:11,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 120 transitions, 487 flow [2024-11-22 21:18:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:18:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:18:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2024-11-22 21:18:11,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7286821705426356 [2024-11-22 21:18:11,767 INFO L175 Difference]: Start difference. First operand has 118 places, 107 transitions, 295 flow. Second operand 3 states and 376 transitions. [2024-11-22 21:18:11,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 120 transitions, 487 flow [2024-11-22 21:18:11,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 120 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:18:11,770 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 301 flow [2024-11-22 21:18:11,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2024-11-22 21:18:11,771 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -44 predicate places. [2024-11-22 21:18:11,771 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 301 flow [2024-11-22 21:18:11,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:11,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:11,771 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] [2024-11-22 21:18:11,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 21:18:11,771 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:11,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash -386843505, now seen corresponding path program 1 times [2024-11-22 21:18:11,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:11,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992585509] [2024-11-22 21:18:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:11,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:11,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:11,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992585509] [2024-11-22 21:18:11,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992585509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:11,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:11,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:18:11,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782817730] [2024-11-22 21:18:11,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:11,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:18:11,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:11,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:18:11,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:18:12,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 172 [2024-11-22 21:18:12,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:12,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:12,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 172 [2024-11-22 21:18:12,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:12,215 INFO L124 PetriNetUnfolderBase]: 1272/2936 cut-off events. [2024-11-22 21:18:12,215 INFO L125 PetriNetUnfolderBase]: For 1003/1003 co-relation queries the response was YES. [2024-11-22 21:18:12,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6632 conditions, 2936 events. 1272/2936 cut-off events. For 1003/1003 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 16217 event pairs, 884 based on Foata normal form. 72/2848 useless extension candidates. Maximal degree in co-relation 6619. Up to 1927 conditions per place. [2024-11-22 21:18:12,231 INFO L140 encePairwiseOnDemand]: 161/172 looper letters, 63 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-11-22 21:18:12,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 104 transitions, 434 flow [2024-11-22 21:18:12,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:18:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:18:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2024-11-22 21:18:12,233 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2024-11-22 21:18:12,233 INFO L175 Difference]: Start difference. First operand has 118 places, 107 transitions, 301 flow. Second operand 4 states and 444 transitions. [2024-11-22 21:18:12,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 104 transitions, 434 flow [2024-11-22 21:18:12,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 104 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:18:12,238 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 285 flow [2024-11-22 21:18:12,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=112, PETRI_TRANSITIONS=99} [2024-11-22 21:18:12,238 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-11-22 21:18:12,238 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 285 flow [2024-11-22 21:18:12,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:12,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:12,239 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] [2024-11-22 21:18:12,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 21:18:12,239 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:12,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:12,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1627108890, now seen corresponding path program 1 times [2024-11-22 21:18:12,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:12,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581593704] [2024-11-22 21:18:12,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:12,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:12,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:12,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581593704] [2024-11-22 21:18:12,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581593704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:12,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:12,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:18:12,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730906934] [2024-11-22 21:18:12,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:12,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:18:12,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:12,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:18:12,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:18:12,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 172 [2024-11-22 21:18:12,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 99 transitions, 285 flow. Second operand has 7 states, 7 states have (on average 99.28571428571429) internal successors, (695), 7 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:12,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:12,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 172 [2024-11-22 21:18:12,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:13,106 INFO L124 PetriNetUnfolderBase]: 1272/2810 cut-off events. [2024-11-22 21:18:13,106 INFO L125 PetriNetUnfolderBase]: For 948/948 co-relation queries the response was YES. [2024-11-22 21:18:13,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6405 conditions, 2810 events. 1272/2810 cut-off events. For 948/948 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 14625 event pairs, 884 based on Foata normal form. 72/2794 useless extension candidates. Maximal degree in co-relation 6391. Up to 1926 conditions per place. [2024-11-22 21:18:13,117 INFO L140 encePairwiseOnDemand]: 160/172 looper letters, 62 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2024-11-22 21:18:13,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 97 transitions, 422 flow [2024-11-22 21:18:13,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:18:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:18:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2024-11-22 21:18:13,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6255813953488372 [2024-11-22 21:18:13,119 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 285 flow. Second operand 5 states and 538 transitions. [2024-11-22 21:18:13,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 97 transitions, 422 flow [2024-11-22 21:18:13,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 97 transitions, 416 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:18:13,123 INFO L231 Difference]: Finished difference. Result has 106 places, 92 transitions, 275 flow [2024-11-22 21:18:13,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=106, PETRI_TRANSITIONS=92} [2024-11-22 21:18:13,123 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -56 predicate places. [2024-11-22 21:18:13,123 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 92 transitions, 275 flow [2024-11-22 21:18:13,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.28571428571429) internal successors, (695), 7 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:13,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:13,124 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] [2024-11-22 21:18:13,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 21:18:13,124 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:13,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1236209336, now seen corresponding path program 1 times [2024-11-22 21:18:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:13,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397785094] [2024-11-22 21:18:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:13,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:18:13,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:13,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397785094] [2024-11-22 21:18:13,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397785094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:18:13,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674596736] [2024-11-22 21:18:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:13,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:18:13,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:18:13,206 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:18:13,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:18:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:13,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 21:18:13,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:18:13,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:18:13,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 21:18:13,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674596736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:13,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 21:18:13,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-22 21:18:13,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730647506] [2024-11-22 21:18:13,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:13,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:18:13,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:13,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:18:13,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:18:13,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-22 21:18:13,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 92 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:13,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:13,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-22 21:18:13,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:13,667 INFO L124 PetriNetUnfolderBase]: 1272/2818 cut-off events. [2024-11-22 21:18:13,667 INFO L125 PetriNetUnfolderBase]: For 934/934 co-relation queries the response was YES. [2024-11-22 21:18:13,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6414 conditions, 2818 events. 1272/2818 cut-off events. For 934/934 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 14707 event pairs, 1010 based on Foata normal form. 4/2724 useless extension candidates. Maximal degree in co-relation 6400. Up to 2207 conditions per place. [2024-11-22 21:18:13,679 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 59 selfloop transitions, 1 changer transitions 2/91 dead transitions. [2024-11-22 21:18:13,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 91 transitions, 395 flow [2024-11-22 21:18:13,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:18:13,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:18:13,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2024-11-22 21:18:13,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6976744186046512 [2024-11-22 21:18:13,681 INFO L175 Difference]: Start difference. First operand has 106 places, 92 transitions, 275 flow. Second operand 3 states and 360 transitions. [2024-11-22 21:18:13,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 91 transitions, 395 flow [2024-11-22 21:18:13,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 91 transitions, 385 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:18:13,684 INFO L231 Difference]: Finished difference. Result has 103 places, 89 transitions, 260 flow [2024-11-22 21:18:13,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=103, PETRI_TRANSITIONS=89} [2024-11-22 21:18:13,684 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -59 predicate places. [2024-11-22 21:18:13,684 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 89 transitions, 260 flow [2024-11-22 21:18:13,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:13,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:13,685 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] [2024-11-22 21:18:13,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:18:13,888 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,SelfDestructingSolverStorable22 [2024-11-22 21:18:13,889 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:13,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:13,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1099231026, now seen corresponding path program 1 times [2024-11-22 21:18:13,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:13,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360815486] [2024-11-22 21:18:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:13,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:14,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:14,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360815486] [2024-11-22 21:18:14,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360815486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:14,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:14,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 21:18:14,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900945772] [2024-11-22 21:18:14,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:14,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:18:14,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:14,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:18:14,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:18:15,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-22 21:18:15,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 89 transitions, 260 flow. Second operand has 13 states, 13 states have (on average 96.15384615384616) internal successors, (1250), 13 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:15,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:15,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-22 21:18:15,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:15,950 INFO L124 PetriNetUnfolderBase]: 1358/2886 cut-off events. [2024-11-22 21:18:15,950 INFO L125 PetriNetUnfolderBase]: For 948/948 co-relation queries the response was YES. [2024-11-22 21:18:15,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 2886 events. 1358/2886 cut-off events. For 948/948 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 14300 event pairs, 289 based on Foata normal form. 0/2812 useless extension candidates. Maximal degree in co-relation 6648. Up to 1285 conditions per place. [2024-11-22 21:18:15,960 INFO L140 encePairwiseOnDemand]: 155/172 looper letters, 118 selfloop transitions, 16 changer transitions 14/168 dead transitions. [2024-11-22 21:18:15,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 168 transitions, 808 flow [2024-11-22 21:18:15,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 21:18:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 21:18:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1252 transitions. [2024-11-22 21:18:15,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6065891472868217 [2024-11-22 21:18:15,962 INFO L175 Difference]: Start difference. First operand has 103 places, 89 transitions, 260 flow. Second operand 12 states and 1252 transitions. [2024-11-22 21:18:15,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 168 transitions, 808 flow [2024-11-22 21:18:15,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 168 transitions, 807 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:18:15,965 INFO L231 Difference]: Finished difference. Result has 113 places, 92 transitions, 315 flow [2024-11-22 21:18:15,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=315, PETRI_PLACES=113, PETRI_TRANSITIONS=92} [2024-11-22 21:18:15,966 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -49 predicate places. [2024-11-22 21:18:15,966 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 92 transitions, 315 flow [2024-11-22 21:18:15,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 96.15384615384616) internal successors, (1250), 13 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:15,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:15,967 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] [2024-11-22 21:18:15,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 21:18:15,967 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:15,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:15,967 INFO L85 PathProgramCache]: Analyzing trace with hash 594541401, now seen corresponding path program 1 times [2024-11-22 21:18:15,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:15,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388583224] [2024-11-22 21:18:15,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:15,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:17,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:17,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388583224] [2024-11-22 21:18:17,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388583224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:17,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:17,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 21:18:17,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518159025] [2024-11-22 21:18:17,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:17,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:18:17,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:18:17,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:18:18,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 172 [2024-11-22 21:18:18,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 92 transitions, 315 flow. Second operand has 18 states, 18 states have (on average 64.38888888888889) internal successors, (1159), 18 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:18,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:18,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 172 [2024-11-22 21:18:18,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:19,111 INFO L124 PetriNetUnfolderBase]: 1500/3163 cut-off events. [2024-11-22 21:18:19,111 INFO L125 PetriNetUnfolderBase]: For 1241/1241 co-relation queries the response was YES. [2024-11-22 21:18:19,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 3163 events. 1500/3163 cut-off events. For 1241/1241 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 15294 event pairs, 216 based on Foata normal form. 0/3077 useless extension candidates. Maximal degree in co-relation 7571. Up to 939 conditions per place. [2024-11-22 21:18:19,123 INFO L140 encePairwiseOnDemand]: 150/172 looper letters, 147 selfloop transitions, 21 changer transitions 15/202 dead transitions. [2024-11-22 21:18:19,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 202 transitions, 1033 flow [2024-11-22 21:18:19,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 21:18:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-22 21:18:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1159 transitions. [2024-11-22 21:18:19,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4211482558139535 [2024-11-22 21:18:19,126 INFO L175 Difference]: Start difference. First operand has 113 places, 92 transitions, 315 flow. Second operand 16 states and 1159 transitions. [2024-11-22 21:18:19,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 202 transitions, 1033 flow [2024-11-22 21:18:19,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 202 transitions, 1011 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-22 21:18:19,130 INFO L231 Difference]: Finished difference. Result has 123 places, 98 transitions, 376 flow [2024-11-22 21:18:19,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=376, PETRI_PLACES=123, PETRI_TRANSITIONS=98} [2024-11-22 21:18:19,131 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -39 predicate places. [2024-11-22 21:18:19,131 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 98 transitions, 376 flow [2024-11-22 21:18:19,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 64.38888888888889) internal successors, (1159), 18 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:19,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:19,132 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] [2024-11-22 21:18:19,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 21:18:19,132 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:19,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:19,132 INFO L85 PathProgramCache]: Analyzing trace with hash 925768121, now seen corresponding path program 1 times [2024-11-22 21:18:19,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:19,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89813538] [2024-11-22 21:18:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:19,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:19,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89813538] [2024-11-22 21:18:19,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89813538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:19,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:19,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:18:19,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483858203] [2024-11-22 21:18:19,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:19,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:18:19,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:19,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:18:19,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:18:19,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-22 21:18:19,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 98 transitions, 376 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:19,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:19,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-22 21:18:19,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:19,660 INFO L124 PetriNetUnfolderBase]: 1385/3067 cut-off events. [2024-11-22 21:18:19,661 INFO L125 PetriNetUnfolderBase]: For 1443/1448 co-relation queries the response was YES. [2024-11-22 21:18:19,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7458 conditions, 3067 events. 1385/3067 cut-off events. For 1443/1448 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 15785 event pairs, 690 based on Foata normal form. 12/3008 useless extension candidates. Maximal degree in co-relation 7438. Up to 1705 conditions per place. [2024-11-22 21:18:19,675 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 115 selfloop transitions, 3 changer transitions 0/150 dead transitions. [2024-11-22 21:18:19,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 150 transitions, 824 flow [2024-11-22 21:18:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:18:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:18:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2024-11-22 21:18:19,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7311046511627907 [2024-11-22 21:18:19,676 INFO L175 Difference]: Start difference. First operand has 123 places, 98 transitions, 376 flow. Second operand 4 states and 503 transitions. [2024-11-22 21:18:19,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 150 transitions, 824 flow [2024-11-22 21:18:19,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 150 transitions, 774 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-11-22 21:18:19,681 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 355 flow [2024-11-22 21:18:19,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=355, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2024-11-22 21:18:19,682 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -46 predicate places. [2024-11-22 21:18:19,682 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 355 flow [2024-11-22 21:18:19,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:19,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:19,682 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] [2024-11-22 21:18:19,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 21:18:19,682 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:19,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:19,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1440627542, now seen corresponding path program 1 times [2024-11-22 21:18:19,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:19,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95170502] [2024-11-22 21:18:19,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:19,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:21,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95170502] [2024-11-22 21:18:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95170502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:21,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:21,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-22 21:18:21,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024420243] [2024-11-22 21:18:21,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:21,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 21:18:21,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:21,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 21:18:21,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2024-11-22 21:18:22,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 172 [2024-11-22 21:18:22,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 355 flow. Second operand has 20 states, 20 states have (on average 93.55) internal successors, (1871), 20 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:22,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:22,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 172 [2024-11-22 21:18:22,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:23,555 INFO L124 PetriNetUnfolderBase]: 1484/3127 cut-off events. [2024-11-22 21:18:23,555 INFO L125 PetriNetUnfolderBase]: For 1963/1963 co-relation queries the response was YES. [2024-11-22 21:18:23,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8007 conditions, 3127 events. 1484/3127 cut-off events. For 1963/1963 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 14996 event pairs, 211 based on Foata normal form. 0/3088 useless extension candidates. Maximal degree in co-relation 7986. Up to 906 conditions per place. [2024-11-22 21:18:23,568 INFO L140 encePairwiseOnDemand]: 149/172 looper letters, 151 selfloop transitions, 22 changer transitions 16/208 dead transitions. [2024-11-22 21:18:23,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 208 transitions, 1151 flow [2024-11-22 21:18:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 21:18:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-22 21:18:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1719 transitions. [2024-11-22 21:18:23,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5878932968536251 [2024-11-22 21:18:23,571 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 355 flow. Second operand 17 states and 1719 transitions. [2024-11-22 21:18:23,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 208 transitions, 1151 flow [2024-11-22 21:18:23,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 208 transitions, 1101 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-22 21:18:23,576 INFO L231 Difference]: Finished difference. Result has 131 places, 99 transitions, 403 flow [2024-11-22 21:18:23,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=403, PETRI_PLACES=131, PETRI_TRANSITIONS=99} [2024-11-22 21:18:23,577 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -31 predicate places. [2024-11-22 21:18:23,577 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 99 transitions, 403 flow [2024-11-22 21:18:23,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 93.55) internal successors, (1871), 20 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:23,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:23,578 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] [2024-11-22 21:18:23,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-22 21:18:23,578 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:23,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:23,578 INFO L85 PathProgramCache]: Analyzing trace with hash -834086596, now seen corresponding path program 1 times [2024-11-22 21:18:23,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:23,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442208391] [2024-11-22 21:18:23,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:23,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:25,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:25,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442208391] [2024-11-22 21:18:25,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442208391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:25,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:25,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-22 21:18:25,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540187297] [2024-11-22 21:18:25,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:25,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 21:18:25,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:25,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 21:18:25,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2024-11-22 21:18:28,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-22 21:18:28,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 99 transitions, 403 flow. Second operand has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:28,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:28,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-22 21:18:28,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:30,133 INFO L124 PetriNetUnfolderBase]: 1764/3762 cut-off events. [2024-11-22 21:18:30,133 INFO L125 PetriNetUnfolderBase]: For 2238/2240 co-relation queries the response was YES. [2024-11-22 21:18:30,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9824 conditions, 3762 events. 1764/3762 cut-off events. For 2238/2240 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 19887 event pairs, 393 based on Foata normal form. 0/3711 useless extension candidates. Maximal degree in co-relation 9801. Up to 2440 conditions per place. [2024-11-22 21:18:30,148 INFO L140 encePairwiseOnDemand]: 144/172 looper letters, 155 selfloop transitions, 50 changer transitions 20/246 dead transitions. [2024-11-22 21:18:30,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 246 transitions, 1420 flow [2024-11-22 21:18:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-22 21:18:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-22 21:18:30,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2785 transitions. [2024-11-22 21:18:30,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782807308970099 [2024-11-22 21:18:30,152 INFO L175 Difference]: Start difference. First operand has 131 places, 99 transitions, 403 flow. Second operand 28 states and 2785 transitions. [2024-11-22 21:18:30,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 246 transitions, 1420 flow [2024-11-22 21:18:30,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 246 transitions, 1340 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-11-22 21:18:30,160 INFO L231 Difference]: Finished difference. Result has 162 places, 145 transitions, 807 flow [2024-11-22 21:18:30,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=807, PETRI_PLACES=162, PETRI_TRANSITIONS=145} [2024-11-22 21:18:30,161 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 0 predicate places. [2024-11-22 21:18:30,161 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 145 transitions, 807 flow [2024-11-22 21:18:30,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:30,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:30,162 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] [2024-11-22 21:18:30,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-22 21:18:30,162 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:30,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:30,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1652023936, now seen corresponding path program 2 times [2024-11-22 21:18:30,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:30,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028063370] [2024-11-22 21:18:30,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:18:30,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:30,194 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:18:30,194 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:18:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:32,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:32,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028063370] [2024-11-22 21:18:32,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028063370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:32,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:32,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-22 21:18:32,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546720036] [2024-11-22 21:18:32,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:32,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 21:18:32,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:32,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 21:18:32,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2024-11-22 21:18:36,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-22 21:18:36,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 145 transitions, 807 flow. Second operand has 26 states, 26 states have (on average 93.96153846153847) internal successors, (2443), 26 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:36,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:36,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-22 21:18:36,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:37,983 INFO L124 PetriNetUnfolderBase]: 2003/4287 cut-off events. [2024-11-22 21:18:37,983 INFO L125 PetriNetUnfolderBase]: For 6149/6149 co-relation queries the response was YES. [2024-11-22 21:18:37,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12704 conditions, 4287 events. 2003/4287 cut-off events. For 6149/6149 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 23709 event pairs, 448 based on Foata normal form. 0/4232 useless extension candidates. Maximal degree in co-relation 12663. Up to 2761 conditions per place. [2024-11-22 21:18:38,003 INFO L140 encePairwiseOnDemand]: 145/172 looper letters, 192 selfloop transitions, 47 changer transitions 22/282 dead transitions. [2024-11-22 21:18:38,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 282 transitions, 1972 flow [2024-11-22 21:18:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-22 21:18:38,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-22 21:18:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2775 transitions. [2024-11-22 21:18:38,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5762043189368771 [2024-11-22 21:18:38,006 INFO L175 Difference]: Start difference. First operand has 162 places, 145 transitions, 807 flow. Second operand 28 states and 2775 transitions. [2024-11-22 21:18:38,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 282 transitions, 1972 flow [2024-11-22 21:18:38,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 282 transitions, 1966 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-22 21:18:38,020 INFO L231 Difference]: Finished difference. Result has 203 places, 179 transitions, 1270 flow [2024-11-22 21:18:38,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1270, PETRI_PLACES=203, PETRI_TRANSITIONS=179} [2024-11-22 21:18:38,020 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 41 predicate places. [2024-11-22 21:18:38,021 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 179 transitions, 1270 flow [2024-11-22 21:18:38,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 93.96153846153847) internal successors, (2443), 26 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:38,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:38,022 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] [2024-11-22 21:18:38,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-22 21:18:38,022 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:38,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:38,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1478671306, now seen corresponding path program 3 times [2024-11-22 21:18:38,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:38,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610242184] [2024-11-22 21:18:38,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:18:38,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:38,046 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 21:18:38,046 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:18:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:40,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:40,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610242184] [2024-11-22 21:18:40,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610242184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:40,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:40,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-22 21:18:40,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137686225] [2024-11-22 21:18:40,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:40,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 21:18:40,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:40,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 21:18:40,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-11-22 21:18:45,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-22 21:18:45,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 179 transitions, 1270 flow. Second operand has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:45,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:45,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-22 21:18:45,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:47,381 INFO L124 PetriNetUnfolderBase]: 2242/4799 cut-off events. [2024-11-22 21:18:47,381 INFO L125 PetriNetUnfolderBase]: For 15157/15157 co-relation queries the response was YES. [2024-11-22 21:18:47,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15969 conditions, 4799 events. 2242/4799 cut-off events. For 15157/15157 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 27670 event pairs, 491 based on Foata normal form. 0/4738 useless extension candidates. Maximal degree in co-relation 15911. Up to 3193 conditions per place. [2024-11-22 21:18:47,421 INFO L140 encePairwiseOnDemand]: 145/172 looper letters, 226 selfloop transitions, 49 changer transitions 23/319 dead transitions. [2024-11-22 21:18:47,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 319 transitions, 2657 flow [2024-11-22 21:18:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-22 21:18:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-22 21:18:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2780 transitions. [2024-11-22 21:18:47,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5772425249169435 [2024-11-22 21:18:47,424 INFO L175 Difference]: Start difference. First operand has 203 places, 179 transitions, 1270 flow. Second operand 28 states and 2780 transitions. [2024-11-22 21:18:47,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 319 transitions, 2657 flow [2024-11-22 21:18:47,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 319 transitions, 2550 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-11-22 21:18:47,453 INFO L231 Difference]: Finished difference. Result has 242 places, 213 transitions, 1740 flow [2024-11-22 21:18:47,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1740, PETRI_PLACES=242, PETRI_TRANSITIONS=213} [2024-11-22 21:18:47,454 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 80 predicate places. [2024-11-22 21:18:47,454 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 213 transitions, 1740 flow [2024-11-22 21:18:47,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:47,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:47,455 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] [2024-11-22 21:18:47,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-22 21:18:47,455 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:47,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:47,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1339628274, now seen corresponding path program 4 times [2024-11-22 21:18:47,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:47,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074936668] [2024-11-22 21:18:47,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:18:47,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:47,516 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:18:47,520 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:18:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:50,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:50,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074936668] [2024-11-22 21:18:50,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074936668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:50,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:50,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-22 21:18:50,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545970356] [2024-11-22 21:18:50,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:50,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 21:18:50,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:50,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 21:18:50,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-22 21:18:54,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 172 [2024-11-22 21:18:54,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 213 transitions, 1740 flow. Second operand has 24 states, 24 states have (on average 75.125) internal successors, (1803), 24 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:54,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:54,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 172 [2024-11-22 21:18:54,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:18:56,597 INFO L124 PetriNetUnfolderBase]: 2485/5313 cut-off events. [2024-11-22 21:18:56,597 INFO L125 PetriNetUnfolderBase]: For 29689/29692 co-relation queries the response was YES. [2024-11-22 21:18:56,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19355 conditions, 5313 events. 2485/5313 cut-off events. For 29689/29692 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 31678 event pairs, 580 based on Foata normal form. 3/5253 useless extension candidates. Maximal degree in co-relation 19280. Up to 3639 conditions per place. [2024-11-22 21:18:56,655 INFO L140 encePairwiseOnDemand]: 142/172 looper letters, 256 selfloop transitions, 54 changer transitions 25/355 dead transitions. [2024-11-22 21:18:56,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 355 transitions, 3329 flow [2024-11-22 21:18:56,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 21:18:56,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-22 21:18:56,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2179 transitions. [2024-11-22 21:18:56,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46920757967269594 [2024-11-22 21:18:56,657 INFO L175 Difference]: Start difference. First operand has 242 places, 213 transitions, 1740 flow. Second operand 27 states and 2179 transitions. [2024-11-22 21:18:56,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 355 transitions, 3329 flow [2024-11-22 21:18:56,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 355 transitions, 3122 flow, removed 95 selfloop flow, removed 5 redundant places. [2024-11-22 21:18:56,715 INFO L231 Difference]: Finished difference. Result has 279 places, 245 transitions, 2174 flow [2024-11-22 21:18:56,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2174, PETRI_PLACES=279, PETRI_TRANSITIONS=245} [2024-11-22 21:18:56,715 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 117 predicate places. [2024-11-22 21:18:56,715 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 245 transitions, 2174 flow [2024-11-22 21:18:56,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 75.125) internal successors, (1803), 24 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:18:56,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:56,716 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] [2024-11-22 21:18:56,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-22 21:18:56,717 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:18:56,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:56,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1756570044, now seen corresponding path program 5 times [2024-11-22 21:18:56,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:56,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15221511] [2024-11-22 21:18:56,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:18:56,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:56,747 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:18:56,747 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:18:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:59,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:59,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15221511] [2024-11-22 21:18:59,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15221511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:59,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:59,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-22 21:18:59,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431889048] [2024-11-22 21:18:59,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:59,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 21:18:59,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:59,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 21:18:59,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-11-22 21:19:02,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-22 21:19:02,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 245 transitions, 2174 flow. Second operand has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:02,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:02,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-22 21:19:02,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:04,934 INFO L124 PetriNetUnfolderBase]: 2776/5977 cut-off events. [2024-11-22 21:19:04,935 INFO L125 PetriNetUnfolderBase]: For 52302/52305 co-relation queries the response was YES. [2024-11-22 21:19:04,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23967 conditions, 5977 events. 2776/5977 cut-off events. For 52302/52305 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 37036 event pairs, 576 based on Foata normal form. 3/5915 useless extension candidates. Maximal degree in co-relation 23875. Up to 3244 conditions per place. [2024-11-22 21:19:05,008 INFO L140 encePairwiseOnDemand]: 145/172 looper letters, 293 selfloop transitions, 59 changer transitions 35/408 dead transitions. [2024-11-22 21:19:05,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 408 transitions, 4236 flow [2024-11-22 21:19:05,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-22 21:19:05,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-22 21:19:05,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2805 transitions. [2024-11-22 21:19:05,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5824335548172758 [2024-11-22 21:19:05,011 INFO L175 Difference]: Start difference. First operand has 279 places, 245 transitions, 2174 flow. Second operand 28 states and 2805 transitions. [2024-11-22 21:19:05,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 408 transitions, 4236 flow [2024-11-22 21:19:05,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 408 transitions, 3928 flow, removed 139 selfloop flow, removed 5 redundant places. [2024-11-22 21:19:05,123 INFO L231 Difference]: Finished difference. Result has 316 places, 279 transitions, 2682 flow [2024-11-22 21:19:05,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2682, PETRI_PLACES=316, PETRI_TRANSITIONS=279} [2024-11-22 21:19:05,124 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 154 predicate places. [2024-11-22 21:19:05,124 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 279 transitions, 2682 flow [2024-11-22 21:19:05,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:05,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:05,125 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] [2024-11-22 21:19:05,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-22 21:19:05,125 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:19:05,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:05,126 INFO L85 PathProgramCache]: Analyzing trace with hash -11172176, now seen corresponding path program 6 times [2024-11-22 21:19:05,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:05,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864926415] [2024-11-22 21:19:05,126 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:19:05,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:05,186 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 21:19:05,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:19:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:07,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:07,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864926415] [2024-11-22 21:19:07,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864926415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:07,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:07,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-22 21:19:07,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759994661] [2024-11-22 21:19:07,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:07,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 21:19:07,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 21:19:07,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2024-11-22 21:19:11,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-22 21:19:11,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 279 transitions, 2682 flow. Second operand has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:11,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:11,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-22 21:19:11,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:14,395 INFO L124 PetriNetUnfolderBase]: 2940/6302 cut-off events. [2024-11-22 21:19:14,395 INFO L125 PetriNetUnfolderBase]: For 78573/78576 co-relation queries the response was YES. [2024-11-22 21:19:14,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26694 conditions, 6302 events. 2940/6302 cut-off events. For 78573/78576 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 39587 event pairs, 592 based on Foata normal form. 3/6246 useless extension candidates. Maximal degree in co-relation 26586. Up to 3463 conditions per place. [2024-11-22 21:19:14,466 INFO L140 encePairwiseOnDemand]: 146/172 looper letters, 318 selfloop transitions, 83 changer transitions 36/458 dead transitions. [2024-11-22 21:19:14,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 458 transitions, 4997 flow [2024-11-22 21:19:14,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-22 21:19:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-22 21:19:14,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3190 transitions. [2024-11-22 21:19:14,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.579578488372093 [2024-11-22 21:19:14,469 INFO L175 Difference]: Start difference. First operand has 316 places, 279 transitions, 2682 flow. Second operand 32 states and 3190 transitions. [2024-11-22 21:19:14,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 458 transitions, 4997 flow [2024-11-22 21:19:14,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 458 transitions, 4562 flow, removed 200 selfloop flow, removed 7 redundant places. [2024-11-22 21:19:14,640 INFO L231 Difference]: Finished difference. Result has 352 places, 311 transitions, 3152 flow [2024-11-22 21:19:14,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3152, PETRI_PLACES=352, PETRI_TRANSITIONS=311} [2024-11-22 21:19:14,641 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 190 predicate places. [2024-11-22 21:19:14,641 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 311 transitions, 3152 flow [2024-11-22 21:19:14,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:14,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:14,642 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] [2024-11-22 21:19:14,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-22 21:19:14,642 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-22 21:19:14,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:14,643 INFO L85 PathProgramCache]: Analyzing trace with hash 633945532, now seen corresponding path program 7 times [2024-11-22 21:19:14,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:14,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195863546] [2024-11-22 21:19:14,643 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:19:14,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:16,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:16,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195863546] [2024-11-22 21:19:16,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195863546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:16,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:16,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-22 21:19:16,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617194157] [2024-11-22 21:19:16,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:16,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 21:19:16,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:16,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 21:19:16,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650