./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 c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/queue.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:20:41,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:20:41,725 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:20:41,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:20:41,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:20:41,748 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:20:41,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:20:41,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:20:41,751 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:20:41,751 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:20:41,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:20:41,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:20:41,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:20:41,755 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:20:41,755 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:20:41,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:20:41,756 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:20:41,756 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:20:41,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:20:41,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:20:41,757 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:20:41,758 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:20:41,758 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:20:41,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:20:41,763 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:20:41,764 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:20:41,764 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:20:41,764 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:20:41,764 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:20:41,764 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:20:41,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:20:41,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:20:41,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:20:41,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:20:41,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:20:41,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:20:41,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:20:41,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:20:41,766 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:20:41,766 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:20:41,767 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:20:41,767 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:20:41,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2024-11-09 10:20:41,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:20:42,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:20:42,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:20:42,025 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:20:42,026 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:20:42,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue.i [2024-11-09 10:20:43,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:20:43,809 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:20:43,811 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-11-09 10:20:43,834 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c089ecdf1/30169cc7ac5149d1a08b2d665096c5d5/FLAGe983f5d95 [2024-11-09 10:20:44,117 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c089ecdf1/30169cc7ac5149d1a08b2d665096c5d5 [2024-11-09 10:20:44,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:20:44,121 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:20:44,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:20:44,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:20:44,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:20:44,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eebc3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44, skipping insertion in model container [2024-11-09 10:20:44,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,175 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:20:44,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:20:44,620 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:20:44,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:20:44,818 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:20:44,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44 WrapperNode [2024-11-09 10:20:44,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:20:44,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:20:44,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:20:44,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:20:44,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,883 INFO L138 Inliner]: procedures = 274, calls = 107, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 295 [2024-11-09 10:20:44,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:20:44,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:20:44,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:20:44,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:20:44,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,927 INFO L175 MemorySlicer]: Split 92 memory accesses to 5 slices as follows [2, 8, 5, 23, 54]. 59 percent of accesses are in the largest equivalence class. The 58 initializations are split as follows [2, 8, 5, 20, 23]. The 16 writes are split as follows [0, 0, 0, 2, 14]. [2024-11-09 10:20:44,927 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,949 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,950 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,954 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:20:44,957 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:20:44,957 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:20:44,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:20:44,960 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44" (1/1) ... [2024-11-09 10:20:44,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:20:44,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:20:45,000 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) [2024-11-09 10:20:45,003 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 [2024-11-09 10:20:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 10:20:45,051 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 10:20:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 10:20:45,051 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 10:20:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 10:20:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:20:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:20:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 10:20:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 10:20:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 10:20:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:20:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:20:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 10:20:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 10:20:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 10:20:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 10:20:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:20:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:20:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:20:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 10:20:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 10:20:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 10:20:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:20:45,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:20:45,057 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:20:45,231 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:20:45,233 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:20:45,776 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:20:45,777 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:20:46,150 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:20:46,151 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 10:20:46,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:20:46 BoogieIcfgContainer [2024-11-09 10:20:46,152 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:20:46,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:20:46,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:20:46,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:20:46,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:20:44" (1/3) ... [2024-11-09 10:20:46,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735b84f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:20:46, skipping insertion in model container [2024-11-09 10:20:46,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:44" (2/3) ... [2024-11-09 10:20:46,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735b84f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:20:46, skipping insertion in model container [2024-11-09 10:20:46,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:20:46" (3/3) ... [2024-11-09 10:20:46,161 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-11-09 10:20:46,176 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:20:46,177 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2024-11-09 10:20:46,177 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:20:46,285 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:20:46,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 358 flow [2024-11-09 10:20:46,378 INFO L124 PetriNetUnfolderBase]: 14/170 cut-off events. [2024-11-09 10:20:46,378 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:20:46,384 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. [2024-11-09 10:20:46,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 172 transitions, 358 flow [2024-11-09 10:20:46,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 169 transitions, 350 flow [2024-11-09 10:20:46,397 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:20:46,403 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;@31b16e48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:20:46,404 INFO L334 AbstractCegarLoop]: Starting to check reachability of 134 error locations. [2024-11-09 10:20:46,407 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:20:46,408 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-09 10:20:46,408 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:20:46,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:46,409 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-09 10:20:46,410 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)] === [2024-11-09 10:20:46,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:46,415 INFO L85 PathProgramCache]: Analyzing trace with hash 25066, now seen corresponding path program 1 times [2024-11-09 10:20:46,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:46,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060963123] [2024-11-09 10:20:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:46,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:46,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:46,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060963123] [2024-11-09 10:20:46,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060963123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:46,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:46,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:20:46,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614695529] [2024-11-09 10:20:46,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:46,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:20:46,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:46,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:20:46,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:20:46,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-09 10:20:46,982 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) [2024-11-09 10:20:46,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:46,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-09 10:20:46,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:47,671 INFO L124 PetriNetUnfolderBase]: 1744/4652 cut-off events. [2024-11-09 10:20:47,671 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-09 10:20:47,684 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. [2024-11-09 10:20:47,708 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 57 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2024-11-09 10:20:47,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 153 transitions, 436 flow [2024-11-09 10:20:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:20:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:20:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2024-11-09 10:20:47,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7054263565891473 [2024-11-09 10:20:47,728 INFO L175 Difference]: Start difference. First operand has 162 places, 169 transitions, 350 flow. Second operand 3 states and 364 transitions. [2024-11-09 10:20:47,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 153 transitions, 436 flow [2024-11-09 10:20:47,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 153 transitions, 428 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:20:47,739 INFO L231 Difference]: Finished difference. Result has 150 places, 153 transitions, 314 flow [2024-11-09 10:20:47,741 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} [2024-11-09 10:20:47,744 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -12 predicate places. [2024-11-09 10:20:47,744 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 153 transitions, 314 flow [2024-11-09 10:20:47,745 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) [2024-11-09 10:20:47,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:47,745 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-09 10:20:47,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:20:47,746 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)] === [2024-11-09 10:20:47,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:47,746 INFO L85 PathProgramCache]: Analyzing trace with hash 25067, now seen corresponding path program 1 times [2024-11-09 10:20:47,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:47,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299498067] [2024-11-09 10:20:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:47,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:47,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:47,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299498067] [2024-11-09 10:20:47,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299498067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:47,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:47,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:20:47,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946556768] [2024-11-09 10:20:47,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:47,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:20:47,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:47,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:20:47,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:20:48,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-09 10:20:48,020 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) [2024-11-09 10:20:48,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:48,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-09 10:20:48,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:48,554 INFO L124 PetriNetUnfolderBase]: 1744/4649 cut-off events. [2024-11-09 10:20:48,554 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-09 10:20:48,562 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. [2024-11-09 10:20:48,584 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 57 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2024-11-09 10:20:48,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 150 transitions, 426 flow [2024-11-09 10:20:48,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:20:48,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:20:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2024-11-09 10:20:48,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6957364341085271 [2024-11-09 10:20:48,590 INFO L175 Difference]: Start difference. First operand has 150 places, 153 transitions, 314 flow. Second operand 3 states and 359 transitions. [2024-11-09 10:20:48,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 150 transitions, 426 flow [2024-11-09 10:20:48,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 150 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:20:48,595 INFO L231 Difference]: Finished difference. Result has 147 places, 150 transitions, 308 flow [2024-11-09 10:20:48,596 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} [2024-11-09 10:20:48,596 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -15 predicate places. [2024-11-09 10:20:48,597 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 150 transitions, 308 flow [2024-11-09 10:20:48,597 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) [2024-11-09 10:20:48,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:48,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 10:20:48,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:20:48,598 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)] === [2024-11-09 10:20:48,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:48,599 INFO L85 PathProgramCache]: Analyzing trace with hash 747506238, now seen corresponding path program 1 times [2024-11-09 10:20:48,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:48,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030854430] [2024-11-09 10:20:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:48,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:48,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:48,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030854430] [2024-11-09 10:20:48,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030854430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:48,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:48,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:20:48,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060781494] [2024-11-09 10:20:48,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:48,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:20:48,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:48,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:20:48,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:20:48,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-09 10:20:48,816 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) [2024-11-09 10:20:48,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:48,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-09 10:20:48,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:49,328 INFO L124 PetriNetUnfolderBase]: 1744/4647 cut-off events. [2024-11-09 10:20:49,328 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-09 10:20:49,337 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. [2024-11-09 10:20:49,363 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 56 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2024-11-09 10:20:49,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 148 transitions, 422 flow [2024-11-09 10:20:49,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:20:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:20:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2024-11-09 10:20:49,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6700581395348837 [2024-11-09 10:20:49,368 INFO L175 Difference]: Start difference. First operand has 147 places, 150 transitions, 308 flow. Second operand 4 states and 461 transitions. [2024-11-09 10:20:49,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 148 transitions, 422 flow [2024-11-09 10:20:49,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 148 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:20:49,375 INFO L231 Difference]: Finished difference. Result has 146 places, 148 transitions, 306 flow [2024-11-09 10:20:49,376 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} [2024-11-09 10:20:49,376 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -16 predicate places. [2024-11-09 10:20:49,377 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 148 transitions, 306 flow [2024-11-09 10:20:49,377 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) [2024-11-09 10:20:49,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:49,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 10:20:49,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:20:49,378 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)] === [2024-11-09 10:20:49,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:49,379 INFO L85 PathProgramCache]: Analyzing trace with hash 747506239, now seen corresponding path program 1 times [2024-11-09 10:20:49,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:49,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698742433] [2024-11-09 10:20:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:49,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:49,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:49,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698742433] [2024-11-09 10:20:49,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698742433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:49,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:49,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:20:49,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616172721] [2024-11-09 10:20:49,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:49,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:20:49,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:49,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:20:49,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:20:49,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-09 10:20:49,632 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) [2024-11-09 10:20:49,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:49,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-09 10:20:49,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:50,196 INFO L124 PetriNetUnfolderBase]: 1744/4645 cut-off events. [2024-11-09 10:20:50,196 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-09 10:20:50,204 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. [2024-11-09 10:20:50,232 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 56 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2024-11-09 10:20:50,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 146 transitions, 420 flow [2024-11-09 10:20:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:20:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:20:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2024-11-09 10:20:50,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6700581395348837 [2024-11-09 10:20:50,235 INFO L175 Difference]: Start difference. First operand has 146 places, 148 transitions, 306 flow. Second operand 4 states and 461 transitions. [2024-11-09 10:20:50,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 146 transitions, 420 flow [2024-11-09 10:20:50,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 146 transitions, 414 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:20:50,239 INFO L231 Difference]: Finished difference. Result has 144 places, 146 transitions, 302 flow [2024-11-09 10:20:50,240 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} [2024-11-09 10:20:50,241 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -18 predicate places. [2024-11-09 10:20:50,241 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 146 transitions, 302 flow [2024-11-09 10:20:50,242 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) [2024-11-09 10:20:50,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:50,242 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:20:50,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:20:50,243 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:20:50,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:50,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1029048543, now seen corresponding path program 1 times [2024-11-09 10:20:50,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:50,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849941223] [2024-11-09 10:20:50,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:50,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:50,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:50,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849941223] [2024-11-09 10:20:50,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849941223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:50,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:50,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:20:50,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025182051] [2024-11-09 10:20:50,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:50,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:20:50,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:50,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:20:50,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:20:50,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 172 [2024-11-09 10:20:50,534 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) [2024-11-09 10:20:50,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:50,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 172 [2024-11-09 10:20:50,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:51,046 INFO L124 PetriNetUnfolderBase]: 1703/4144 cut-off events. [2024-11-09 10:20:51,046 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-09 10:20:51,053 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. [2024-11-09 10:20:51,065 INFO L140 encePairwiseOnDemand]: 151/172 looper letters, 73 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2024-11-09 10:20:51,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 149 transitions, 465 flow [2024-11-09 10:20:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:20:51,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:20:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 438 transitions. [2024-11-09 10:20:51,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6366279069767442 [2024-11-09 10:20:51,068 INFO L175 Difference]: Start difference. First operand has 144 places, 146 transitions, 302 flow. Second operand 4 states and 438 transitions. [2024-11-09 10:20:51,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 149 transitions, 465 flow [2024-11-09 10:20:51,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 149 transitions, 459 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:20:51,071 INFO L231 Difference]: Finished difference. Result has 128 places, 130 transitions, 274 flow [2024-11-09 10:20:51,071 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} [2024-11-09 10:20:51,072 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -34 predicate places. [2024-11-09 10:20:51,072 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 130 transitions, 274 flow [2024-11-09 10:20:51,072 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) [2024-11-09 10:20:51,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:51,074 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:20:51,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:20:51,075 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:20:51,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:51,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1029048544, now seen corresponding path program 1 times [2024-11-09 10:20:51,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:51,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125006637] [2024-11-09 10:20:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:51,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:51,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:51,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125006637] [2024-11-09 10:20:51,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125006637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:51,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:51,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:20:51,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75604994] [2024-11-09 10:20:51,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:51,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:20:51,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:51,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:20:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:20:51,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 172 [2024-11-09 10:20:51,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 130 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:20:51,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:51,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 172 [2024-11-09 10:20:51,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:51,794 INFO L124 PetriNetUnfolderBase]: 1703/3675 cut-off events. [2024-11-09 10:20:51,794 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-09 10:20:51,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6545 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 24543 event pairs, 702 based on Foata normal form. 204/3340 useless extension candidates. Maximal degree in co-relation 2518. Up to 1413 conditions per place. [2024-11-09 10:20:51,812 INFO L140 encePairwiseOnDemand]: 153/172 looper letters, 73 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2024-11-09 10:20:51,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 135 transitions, 441 flow [2024-11-09 10:20:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:20:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:20:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2024-11-09 10:20:51,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2024-11-09 10:20:51,814 INFO L175 Difference]: Start difference. First operand has 128 places, 130 transitions, 274 flow. Second operand 4 states and 444 transitions. [2024-11-09 10:20:51,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 135 transitions, 441 flow [2024-11-09 10:20:51,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 135 transitions, 431 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:20:51,819 INFO L231 Difference]: Finished difference. Result has 114 places, 116 transitions, 246 flow [2024-11-09 10:20:51,819 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=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=114, PETRI_TRANSITIONS=116} [2024-11-09 10:20:51,820 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -48 predicate places. [2024-11-09 10:20:51,820 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 116 transitions, 246 flow [2024-11-09 10:20:51,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:20:51,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:51,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:20:51,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:20:51,822 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:20:51,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:51,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1835734632, now seen corresponding path program 1 times [2024-11-09 10:20:51,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:51,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133378774] [2024-11-09 10:20:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:51,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:52,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:52,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133378774] [2024-11-09 10:20:52,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133378774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:52,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:52,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:20:52,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008089684] [2024-11-09 10:20:52,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:52,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:20:52,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:52,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:20:52,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:20:52,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 172 [2024-11-09 10:20:52,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 116 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:20:52,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:52,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 172 [2024-11-09 10:20:52,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:53,531 INFO L124 PetriNetUnfolderBase]: 2502/5391 cut-off events. [2024-11-09 10:20:53,531 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-11-09 10:20:53,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9547 conditions, 5391 events. 2502/5391 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 38764 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. [2024-11-09 10:20:53,558 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 124 selfloop transitions, 11 changer transitions 0/183 dead transitions. [2024-11-09 10:20:53,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 183 transitions, 655 flow [2024-11-09 10:20:53,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:20:53,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:20:53,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 669 transitions. [2024-11-09 10:20:53,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5556478405315615 [2024-11-09 10:20:53,561 INFO L175 Difference]: Start difference. First operand has 114 places, 116 transitions, 246 flow. Second operand 7 states and 669 transitions. [2024-11-09 10:20:53,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 183 transitions, 655 flow [2024-11-09 10:20:53,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 183 transitions, 643 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:20:53,566 INFO L231 Difference]: Finished difference. Result has 121 places, 126 transitions, 310 flow [2024-11-09 10:20:53,567 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} [2024-11-09 10:20:53,567 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -41 predicate places. [2024-11-09 10:20:53,568 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 126 transitions, 310 flow [2024-11-09 10:20:53,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:20:53,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:53,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:20:53,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:20:53,569 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:20:53,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:53,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1409040039, now seen corresponding path program 1 times [2024-11-09 10:20:53,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:53,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368207480] [2024-11-09 10:20:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:53,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:53,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:53,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368207480] [2024-11-09 10:20:53,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368207480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:53,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:53,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:20:53,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874249843] [2024-11-09 10:20:53,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:53,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:20:53,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:53,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:20:53,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:20:53,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-11-09 10:20:53,673 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) [2024-11-09 10:20:53,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:53,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-11-09 10:20:53,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:54,083 INFO L124 PetriNetUnfolderBase]: 1382/3218 cut-off events. [2024-11-09 10:20:54,084 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-09 10:20:54,092 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 19582 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. [2024-11-09 10:20:54,106 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 80 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2024-11-09 10:20:54,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 139 transitions, 476 flow [2024-11-09 10:20:54,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:20:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:20:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2024-11-09 10:20:54,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7558139534883721 [2024-11-09 10:20:54,111 INFO L175 Difference]: Start difference. First operand has 121 places, 126 transitions, 310 flow. Second operand 3 states and 390 transitions. [2024-11-09 10:20:54,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 139 transitions, 476 flow [2024-11-09 10:20:54,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 139 transitions, 451 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-09 10:20:54,117 INFO L231 Difference]: Finished difference. Result has 114 places, 116 transitions, 249 flow [2024-11-09 10:20:54,118 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} [2024-11-09 10:20:54,118 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -48 predicate places. [2024-11-09 10:20:54,122 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 116 transitions, 249 flow [2024-11-09 10:20:54,123 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) [2024-11-09 10:20:54,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:54,123 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] [2024-11-09 10:20:54,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:20:54,123 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:20:54,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1094290775, now seen corresponding path program 1 times [2024-11-09 10:20:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:54,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709521296] [2024-11-09 10:20:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:54,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:54,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709521296] [2024-11-09 10:20:54,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709521296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:54,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:54,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:20:54,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293936802] [2024-11-09 10:20:54,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:54,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:20:54,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:20:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:20:54,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-09 10:20:54,340 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) [2024-11-09 10:20:54,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:54,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-09 10:20:54,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:54,810 INFO L124 PetriNetUnfolderBase]: 1392/3289 cut-off events. [2024-11-09 10:20:54,810 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-09 10:20:54,815 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 20418 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. [2024-11-09 10:20:54,823 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 59 selfloop transitions, 1 changer transitions 0/113 dead transitions. [2024-11-09 10:20:54,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 363 flow [2024-11-09 10:20:54,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:20:54,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:20:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2024-11-09 10:20:54,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6957364341085271 [2024-11-09 10:20:54,825 INFO L175 Difference]: Start difference. First operand has 114 places, 116 transitions, 249 flow. Second operand 3 states and 359 transitions. [2024-11-09 10:20:54,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 363 flow [2024-11-09 10:20:54,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:20:54,828 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 242 flow [2024-11-09 10:20:54,828 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} [2024-11-09 10:20:54,830 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-11-09 10:20:54,830 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 242 flow [2024-11-09 10:20:54,830 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) [2024-11-09 10:20:54,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:54,831 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] [2024-11-09 10:20:54,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:20:54,831 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:20:54,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:54,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1094290776, now seen corresponding path program 1 times [2024-11-09 10:20:54,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:54,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757485288] [2024-11-09 10:20:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:54,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:54,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757485288] [2024-11-09 10:20:54,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757485288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:54,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:54,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:20:54,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357717932] [2024-11-09 10:20:54,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:54,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:20:54,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:54,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:20:54,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:20:55,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-09 10:20:55,073 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) [2024-11-09 10:20:55,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:55,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-09 10:20:55,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:55,345 INFO L124 PetriNetUnfolderBase]: 1392/3277 cut-off events. [2024-11-09 10:20:55,345 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-09 10:20:55,352 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 20341 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. [2024-11-09 10:20:55,361 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 59 selfloop transitions, 1 changer transitions 0/112 dead transitions. [2024-11-09 10:20:55,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 112 transitions, 360 flow [2024-11-09 10:20:55,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:20:55,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:20:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2024-11-09 10:20:55,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7034883720930233 [2024-11-09 10:20:55,363 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 242 flow. Second operand 3 states and 363 transitions. [2024-11-09 10:20:55,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 112 transitions, 360 flow [2024-11-09 10:20:55,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:20:55,365 INFO L231 Difference]: Finished difference. Result has 112 places, 112 transitions, 241 flow [2024-11-09 10:20:55,365 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} [2024-11-09 10:20:55,366 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-11-09 10:20:55,366 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 112 transitions, 241 flow [2024-11-09 10:20:55,367 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) [2024-11-09 10:20:55,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:55,367 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] [2024-11-09 10:20:55,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 10:20:55,367 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:20:55,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:55,368 INFO L85 PathProgramCache]: Analyzing trace with hash -436723347, now seen corresponding path program 1 times [2024-11-09 10:20:55,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:55,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445391904] [2024-11-09 10:20:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:55,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:55,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:55,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445391904] [2024-11-09 10:20:55,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445391904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:55,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:55,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:20:55,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861201380] [2024-11-09 10:20:55,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:55,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:20:55,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:55,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:20:55,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:20:55,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-09 10:20:55,570 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) [2024-11-09 10:20:55,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:55,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-09 10:20:55,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:55,910 INFO L124 PetriNetUnfolderBase]: 1392/3253 cut-off events. [2024-11-09 10:20:55,910 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-09 10:20:55,918 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 20068 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. [2024-11-09 10:20:55,931 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 65 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2024-11-09 10:20:55,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 118 transitions, 390 flow [2024-11-09 10:20:55,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:20:55,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:20:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-11-09 10:20:55,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6816860465116279 [2024-11-09 10:20:55,934 INFO L175 Difference]: Start difference. First operand has 112 places, 112 transitions, 241 flow. Second operand 4 states and 469 transitions. [2024-11-09 10:20:55,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 118 transitions, 390 flow [2024-11-09 10:20:55,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 118 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:20:55,936 INFO L231 Difference]: Finished difference. Result has 112 places, 110 transitions, 242 flow [2024-11-09 10:20:55,936 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} [2024-11-09 10:20:55,937 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-11-09 10:20:55,937 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 110 transitions, 242 flow [2024-11-09 10:20:55,938 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) [2024-11-09 10:20:55,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:55,938 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:20:55,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:20:55,938 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:20:55,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:55,939 INFO L85 PathProgramCache]: Analyzing trace with hash -436723346, now seen corresponding path program 1 times [2024-11-09 10:20:55,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:55,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298236792] [2024-11-09 10:20:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:55,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:56,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:56,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298236792] [2024-11-09 10:20:56,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298236792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:56,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:56,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:20:56,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282414820] [2024-11-09 10:20:56,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:56,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:20:56,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:56,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:20:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:20:56,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-09 10:20:56,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 242 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) [2024-11-09 10:20:56,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:56,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-09 10:20:56,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:56,619 INFO L124 PetriNetUnfolderBase]: 1392/3229 cut-off events. [2024-11-09 10:20:56,620 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-09 10:20:56,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5624 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 19788 event pairs, 1074 based on Foata normal form. 24/2729 useless extension candidates. Maximal degree in co-relation 5619. Up to 2186 conditions per place. [2024-11-09 10:20:56,634 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 65 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2024-11-09 10:20:56,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 116 transitions, 391 flow [2024-11-09 10:20:56,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:20:56,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:20:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-11-09 10:20:56,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6816860465116279 [2024-11-09 10:20:56,636 INFO L175 Difference]: Start difference. First operand has 112 places, 110 transitions, 242 flow. Second operand 4 states and 469 transitions. [2024-11-09 10:20:56,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 116 transitions, 391 flow [2024-11-09 10:20:56,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 116 transitions, 385 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:20:56,639 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 238 flow [2024-11-09 10:20:56,639 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=110, PETRI_TRANSITIONS=108} [2024-11-09 10:20:56,639 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -52 predicate places. [2024-11-09 10:20:56,640 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 238 flow [2024-11-09 10:20:56,640 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) [2024-11-09 10:20:56,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:56,640 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] [2024-11-09 10:20:56,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 10:20:56,641 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:20:56,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:56,641 INFO L85 PathProgramCache]: Analyzing trace with hash -653553668, now seen corresponding path program 1 times [2024-11-09 10:20:56,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:56,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22204631] [2024-11-09 10:20:56,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:56,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:56,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:56,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:56,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22204631] [2024-11-09 10:20:56,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22204631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:56,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:56,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:20:56,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560153242] [2024-11-09 10:20:56,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:56,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:20:56,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:56,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:20:56,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:20:56,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-11-09 10:20:56,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 108 transitions, 238 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) [2024-11-09 10:20:56,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:56,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-11-09 10:20:56,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:56,987 INFO L124 PetriNetUnfolderBase]: 1380/3217 cut-off events. [2024-11-09 10:20:56,988 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-09 10:20:56,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 3217 events. 1380/3217 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 19787 event pairs, 1074 based on Foata normal form. 0/2705 useless extension candidates. Maximal degree in co-relation 5595. Up to 2175 conditions per place. [2024-11-09 10:20:57,004 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 65 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-11-09 10:20:57,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 115 transitions, 387 flow [2024-11-09 10:20:57,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:20:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:20:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2024-11-09 10:20:57,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7228682170542635 [2024-11-09 10:20:57,007 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 238 flow. Second operand 3 states and 373 transitions. [2024-11-09 10:20:57,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 115 transitions, 387 flow [2024-11-09 10:20:57,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 115 transitions, 381 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:20:57,009 INFO L231 Difference]: Finished difference. Result has 109 places, 107 transitions, 234 flow [2024-11-09 10:20:57,010 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} [2024-11-09 10:20:57,010 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -53 predicate places. [2024-11-09 10:20:57,010 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 107 transitions, 234 flow [2024-11-09 10:20:57,011 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) [2024-11-09 10:20:57,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:57,011 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] [2024-11-09 10:20:57,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 10:20:57,011 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:20:57,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:57,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1388772758, now seen corresponding path program 1 times [2024-11-09 10:20:57,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:57,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338323376] [2024-11-09 10:20:57,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:57,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:20:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:20:58,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:20:58,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338323376] [2024-11-09 10:20:58,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338323376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:20:58,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:20:58,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 10:20:58,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060764018] [2024-11-09 10:20:58,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:20:58,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:20:58,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:20:58,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:20:58,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:20:59,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-09 10:20:59,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 234 flow. Second operand has 14 states, 14 states have (on average 94.57142857142857) internal successors, (1324), 14 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:20:59,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:20:59,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-09 10:20:59,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:20:59,853 INFO L124 PetriNetUnfolderBase]: 1847/4004 cut-off events. [2024-11-09 10:20:59,853 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-09 10:20:59,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7252 conditions, 4004 events. 1847/4004 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 24511 event pairs, 382 based on Foata normal form. 0/3520 useless extension candidates. Maximal degree in co-relation 7247. Up to 2245 conditions per place. [2024-11-09 10:20:59,873 INFO L140 encePairwiseOnDemand]: 158/172 looper letters, 143 selfloop transitions, 14 changer transitions 0/196 dead transitions. [2024-11-09 10:20:59,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 196 transitions, 741 flow [2024-11-09 10:20:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:20:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 10:20:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1366 transitions. [2024-11-09 10:20:59,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.610912343470483 [2024-11-09 10:20:59,877 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 234 flow. Second operand 13 states and 1366 transitions. [2024-11-09 10:20:59,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 196 transitions, 741 flow [2024-11-09 10:20:59,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 196 transitions, 733 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:20:59,881 INFO L231 Difference]: Finished difference. Result has 123 places, 113 transitions, 292 flow [2024-11-09 10:20:59,881 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=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=292, PETRI_PLACES=123, PETRI_TRANSITIONS=113} [2024-11-09 10:20:59,882 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -39 predicate places. [2024-11-09 10:20:59,882 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 113 transitions, 292 flow [2024-11-09 10:20:59,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.57142857142857) internal successors, (1324), 14 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:20:59,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:20:59,884 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] [2024-11-09 10:20:59,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 10:20:59,884 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:20:59,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:20:59,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1579885146, now seen corresponding path program 1 times [2024-11-09 10:20:59,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:20:59,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389326146] [2024-11-09 10:20:59,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:20:59,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:20:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:01,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:01,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389326146] [2024-11-09 10:21:01,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389326146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:01,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:01,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 10:21:01,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874266326] [2024-11-09 10:21:01,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:01,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:21:01,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:01,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:21:01,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:21:02,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-09 10:21:02,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 113 transitions, 292 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:02,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:02,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-09 10:21:02,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:02,957 INFO L124 PetriNetUnfolderBase]: 1918/4006 cut-off events. [2024-11-09 10:21:02,957 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2024-11-09 10:21:02,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7615 conditions, 4006 events. 1918/4006 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 23839 event pairs, 434 based on Foata normal form. 0/3604 useless extension candidates. Maximal degree in co-relation 7606. Up to 1950 conditions per place. [2024-11-09 10:21:02,979 INFO L140 encePairwiseOnDemand]: 157/172 looper letters, 127 selfloop transitions, 19 changer transitions 0/182 dead transitions. [2024-11-09 10:21:02,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 732 flow [2024-11-09 10:21:02,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:21:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:21:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1256 transitions. [2024-11-09 10:21:02,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6085271317829457 [2024-11-09 10:21:02,984 INFO L175 Difference]: Start difference. First operand has 123 places, 113 transitions, 292 flow. Second operand 12 states and 1256 transitions. [2024-11-09 10:21:02,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 732 flow [2024-11-09 10:21:02,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 182 transitions, 719 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 10:21:02,989 INFO L231 Difference]: Finished difference. Result has 125 places, 110 transitions, 321 flow [2024-11-09 10:21:02,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=321, PETRI_PLACES=125, PETRI_TRANSITIONS=110} [2024-11-09 10:21:02,990 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -37 predicate places. [2024-11-09 10:21:02,990 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 110 transitions, 321 flow [2024-11-09 10:21:02,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:02,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:02,991 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] [2024-11-09 10:21:02,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 10:21:02,991 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:02,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:02,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1086505305, now seen corresponding path program 1 times [2024-11-09 10:21:02,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:02,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89828695] [2024-11-09 10:21:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:02,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:03,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:03,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89828695] [2024-11-09 10:21:03,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89828695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:03,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:03,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:21:03,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892948182] [2024-11-09 10:21:03,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:03,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:21:03,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:03,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:21:03,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:21:03,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 172 [2024-11-09 10:21:03,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 110 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:03,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:03,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 172 [2024-11-09 10:21:03,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:04,383 INFO L124 PetriNetUnfolderBase]: 3132/6246 cut-off events. [2024-11-09 10:21:04,383 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-11-09 10:21:04,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12286 conditions, 6246 events. 3132/6246 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 39337 event pairs, 536 based on Foata normal form. 80/5731 useless extension candidates. Maximal degree in co-relation 12276. Up to 1657 conditions per place. [2024-11-09 10:21:04,409 INFO L140 encePairwiseOnDemand]: 159/172 looper letters, 167 selfloop transitions, 21 changer transitions 0/226 dead transitions. [2024-11-09 10:21:04,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 226 transitions, 965 flow [2024-11-09 10:21:04,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:21:04,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:21:04,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 818 transitions. [2024-11-09 10:21:04,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5944767441860465 [2024-11-09 10:21:04,412 INFO L175 Difference]: Start difference. First operand has 125 places, 110 transitions, 321 flow. Second operand 8 states and 818 transitions. [2024-11-09 10:21:04,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 226 transitions, 965 flow [2024-11-09 10:21:04,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 226 transitions, 929 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-11-09 10:21:04,422 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 419 flow [2024-11-09 10:21:04,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=419, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2024-11-09 10:21:04,424 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -35 predicate places. [2024-11-09 10:21:04,424 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 419 flow [2024-11-09 10:21:04,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:04,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:04,425 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] [2024-11-09 10:21:04,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 10:21:04,425 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:04,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:04,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1431409847, now seen corresponding path program 1 times [2024-11-09 10:21:04,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:04,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292491040] [2024-11-09 10:21:04,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:04,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:05,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:05,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292491040] [2024-11-09 10:21:05,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292491040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:05,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:05,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 10:21:05,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583831021] [2024-11-09 10:21:05,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:05,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:21:05,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:05,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:21:05,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:21:06,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 172 [2024-11-09 10:21:06,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 419 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) [2024-11-09 10:21:06,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:06,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 172 [2024-11-09 10:21:06,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:06,869 INFO L124 PetriNetUnfolderBase]: 3897/7693 cut-off events. [2024-11-09 10:21:06,869 INFO L125 PetriNetUnfolderBase]: For 1945/1945 co-relation queries the response was YES. [2024-11-09 10:21:06,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16673 conditions, 7693 events. 3897/7693 cut-off events. For 1945/1945 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 49648 event pairs, 651 based on Foata normal form. 12/7066 useless extension candidates. Maximal degree in co-relation 16658. Up to 3967 conditions per place. [2024-11-09 10:21:06,928 INFO L140 encePairwiseOnDemand]: 156/172 looper letters, 169 selfloop transitions, 24 changer transitions 0/230 dead transitions. [2024-11-09 10:21:06,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 230 transitions, 1096 flow [2024-11-09 10:21:06,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:21:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:21:06,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 993 transitions. [2024-11-09 10:21:06,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5248414376321353 [2024-11-09 10:21:06,932 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 419 flow. Second operand 11 states and 993 transitions. [2024-11-09 10:21:06,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 230 transitions, 1096 flow [2024-11-09 10:21:06,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 230 transitions, 1091 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 10:21:06,945 INFO L231 Difference]: Finished difference. Result has 140 places, 136 transitions, 587 flow [2024-11-09 10:21:06,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=587, PETRI_PLACES=140, PETRI_TRANSITIONS=136} [2024-11-09 10:21:06,946 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -22 predicate places. [2024-11-09 10:21:06,946 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 136 transitions, 587 flow [2024-11-09 10:21:06,948 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) [2024-11-09 10:21:06,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:06,948 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] [2024-11-09 10:21:06,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 10:21:06,949 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:06,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:06,949 INFO L85 PathProgramCache]: Analyzing trace with hash 893453218, now seen corresponding path program 1 times [2024-11-09 10:21:06,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:06,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778533544] [2024-11-09 10:21:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:06,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778533544] [2024-11-09 10:21:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778533544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:07,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:07,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:21:07,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048847533] [2024-11-09 10:21:07,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:07,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:21:07,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:07,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:21:07,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:21:07,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-11-09 10:21:07,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 136 transitions, 587 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:07,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:07,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-11-09 10:21:07,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:08,009 INFO L124 PetriNetUnfolderBase]: 5619/12977 cut-off events. [2024-11-09 10:21:08,009 INFO L125 PetriNetUnfolderBase]: For 6849/6937 co-relation queries the response was YES. [2024-11-09 10:21:08,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27320 conditions, 12977 events. 5619/12977 cut-off events. For 6849/6937 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 108059 event pairs, 2755 based on Foata normal form. 261/11396 useless extension candidates. Maximal degree in co-relation 27301. Up to 5399 conditions per place. [2024-11-09 10:21:08,068 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 154 selfloop transitions, 2 changer transitions 0/209 dead transitions. [2024-11-09 10:21:08,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 209 transitions, 1276 flow [2024-11-09 10:21:08,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:21:08,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:21:08,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2024-11-09 10:21:08,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7965116279069767 [2024-11-09 10:21:08,070 INFO L175 Difference]: Start difference. First operand has 140 places, 136 transitions, 587 flow. Second operand 3 states and 411 transitions. [2024-11-09 10:21:08,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 209 transitions, 1276 flow [2024-11-09 10:21:08,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 209 transitions, 1245 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 10:21:08,086 INFO L231 Difference]: Finished difference. Result has 137 places, 137 transitions, 580 flow [2024-11-09 10:21:08,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=137, PETRI_TRANSITIONS=137} [2024-11-09 10:21:08,087 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -25 predicate places. [2024-11-09 10:21:08,087 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 137 transitions, 580 flow [2024-11-09 10:21:08,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:08,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:08,088 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] [2024-11-09 10:21:08,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 10:21:08,088 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:08,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:08,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1367824847, now seen corresponding path program 1 times [2024-11-09 10:21:08,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:08,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258762297] [2024-11-09 10:21:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:08,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:08,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:08,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258762297] [2024-11-09 10:21:08,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258762297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:08,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:08,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:21:08,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442538999] [2024-11-09 10:21:08,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:08,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:21:08,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:08,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:21:08,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:21:08,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-09 10:21:08,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 137 transitions, 580 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:08,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:08,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-09 10:21:08,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:09,698 INFO L124 PetriNetUnfolderBase]: 7016/13981 cut-off events. [2024-11-09 10:21:09,699 INFO L125 PetriNetUnfolderBase]: For 8786/8834 co-relation queries the response was YES. [2024-11-09 10:21:09,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32995 conditions, 13981 events. 7016/13981 cut-off events. For 8786/8834 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 105726 event pairs, 4073 based on Foata normal form. 116/12974 useless extension candidates. Maximal degree in co-relation 32975. Up to 9466 conditions per place. [2024-11-09 10:21:09,768 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 120 selfloop transitions, 3 changer transitions 0/175 dead transitions. [2024-11-09 10:21:09,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 175 transitions, 982 flow [2024-11-09 10:21:09,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:21:09,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:21:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 492 transitions. [2024-11-09 10:21:09,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7151162790697675 [2024-11-09 10:21:09,770 INFO L175 Difference]: Start difference. First operand has 137 places, 137 transitions, 580 flow. Second operand 4 states and 492 transitions. [2024-11-09 10:21:09,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 175 transitions, 982 flow [2024-11-09 10:21:09,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 175 transitions, 978 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:21:09,796 INFO L231 Difference]: Finished difference. Result has 140 places, 138 transitions, 594 flow [2024-11-09 10:21:09,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=594, PETRI_PLACES=140, PETRI_TRANSITIONS=138} [2024-11-09 10:21:09,797 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -22 predicate places. [2024-11-09 10:21:09,797 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 138 transitions, 594 flow [2024-11-09 10:21:09,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:09,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:09,798 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] [2024-11-09 10:21:09,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 10:21:09,798 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:09,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:09,798 INFO L85 PathProgramCache]: Analyzing trace with hash -849156470, now seen corresponding path program 1 times [2024-11-09 10:21:09,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:09,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838456098] [2024-11-09 10:21:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:09,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:09,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838456098] [2024-11-09 10:21:09,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838456098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:09,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:09,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:21:09,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359584792] [2024-11-09 10:21:09,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:09,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:21:09,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:09,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:21:09,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:21:09,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-09 10:21:09,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 138 transitions, 594 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:09,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:09,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-09 10:21:09,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:10,525 INFO L124 PetriNetUnfolderBase]: 3320/7321 cut-off events. [2024-11-09 10:21:10,526 INFO L125 PetriNetUnfolderBase]: For 4026/4032 co-relation queries the response was YES. [2024-11-09 10:21:10,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16233 conditions, 7321 events. 3320/7321 cut-off events. For 4026/4032 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 51656 event pairs, 1646 based on Foata normal form. 168/6786 useless extension candidates. Maximal degree in co-relation 16212. Up to 2910 conditions per place. [2024-11-09 10:21:10,552 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 88 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2024-11-09 10:21:10,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 139 transitions, 707 flow [2024-11-09 10:21:10,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:21:10,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:21:10,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2024-11-09 10:21:10,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7306201550387597 [2024-11-09 10:21:10,553 INFO L175 Difference]: Start difference. First operand has 140 places, 138 transitions, 594 flow. Second operand 3 states and 377 transitions. [2024-11-09 10:21:10,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 139 transitions, 707 flow [2024-11-09 10:21:10,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 139 transitions, 677 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-09 10:21:10,565 INFO L231 Difference]: Finished difference. Result has 136 places, 123 transitions, 466 flow [2024-11-09 10:21:10,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=136, PETRI_TRANSITIONS=123} [2024-11-09 10:21:10,565 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -26 predicate places. [2024-11-09 10:21:10,565 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 123 transitions, 466 flow [2024-11-09 10:21:10,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:10,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:10,566 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] [2024-11-09 10:21:10,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 10:21:10,566 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:10,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:10,567 INFO L85 PathProgramCache]: Analyzing trace with hash -352352858, now seen corresponding path program 1 times [2024-11-09 10:21:10,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:10,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958038104] [2024-11-09 10:21:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:10,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:10,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:10,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958038104] [2024-11-09 10:21:10,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958038104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:10,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:10,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:21:10,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314018346] [2024-11-09 10:21:10,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:10,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:21:10,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:21:10,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:21:10,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-11-09 10:21:10,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 123 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:10,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:10,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-11-09 10:21:10,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:11,142 INFO L124 PetriNetUnfolderBase]: 2059/5095 cut-off events. [2024-11-09 10:21:11,143 INFO L125 PetriNetUnfolderBase]: For 2323/2323 co-relation queries the response was YES. [2024-11-09 10:21:11,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11490 conditions, 5095 events. 2059/5095 cut-off events. For 2323/2323 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 33581 event pairs, 514 based on Foata normal form. 300/4950 useless extension candidates. Maximal degree in co-relation 11470. Up to 2482 conditions per place. [2024-11-09 10:21:11,175 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 80 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2024-11-09 10:21:11,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 136 transitions, 682 flow [2024-11-09 10:21:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:21:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:21:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2024-11-09 10:21:11,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7306201550387597 [2024-11-09 10:21:11,177 INFO L175 Difference]: Start difference. First operand has 136 places, 123 transitions, 466 flow. Second operand 3 states and 377 transitions. [2024-11-09 10:21:11,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 136 transitions, 682 flow [2024-11-09 10:21:11,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 136 transitions, 672 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 10:21:11,187 INFO L231 Difference]: Finished difference. Result has 135 places, 123 transitions, 468 flow [2024-11-09 10:21:11,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=135, PETRI_TRANSITIONS=123} [2024-11-09 10:21:11,188 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -27 predicate places. [2024-11-09 10:21:11,188 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 123 transitions, 468 flow [2024-11-09 10:21:11,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:11,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:11,189 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] [2024-11-09 10:21:11,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 10:21:11,189 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:11,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1469388457, now seen corresponding path program 1 times [2024-11-09 10:21:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:11,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174789625] [2024-11-09 10:21:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:11,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:11,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:11,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174789625] [2024-11-09 10:21:11,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174789625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:11,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:11,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:21:11,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140667492] [2024-11-09 10:21:11,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:11,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:21:11,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:11,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:21:11,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:21:11,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 172 [2024-11-09 10:21:11,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 123 transitions, 468 flow. Second operand has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:11,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:11,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 172 [2024-11-09 10:21:11,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:11,811 INFO L124 PetriNetUnfolderBase]: 2059/4758 cut-off events. [2024-11-09 10:21:11,811 INFO L125 PetriNetUnfolderBase]: For 2543/2545 co-relation queries the response was YES. [2024-11-09 10:21:11,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11541 conditions, 4758 events. 2059/4758 cut-off events. For 2543/2545 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 29755 event pairs, 1435 based on Foata normal form. 142/4675 useless extension candidates. Maximal degree in co-relation 11522. Up to 3087 conditions per place. [2024-11-09 10:21:11,833 INFO L140 encePairwiseOnDemand]: 161/172 looper letters, 75 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-11-09 10:21:11,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 120 transitions, 625 flow [2024-11-09 10:21:11,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:21:11,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:21:11,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 445 transitions. [2024-11-09 10:21:11,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6468023255813954 [2024-11-09 10:21:11,834 INFO L175 Difference]: Start difference. First operand has 135 places, 123 transitions, 468 flow. Second operand 4 states and 445 transitions. [2024-11-09 10:21:11,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 120 transitions, 625 flow [2024-11-09 10:21:11,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 120 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:21:11,843 INFO L231 Difference]: Finished difference. Result has 129 places, 115 transitions, 452 flow [2024-11-09 10:21:11,843 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=452, PETRI_PLACES=129, PETRI_TRANSITIONS=115} [2024-11-09 10:21:11,843 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -33 predicate places. [2024-11-09 10:21:11,844 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 115 transitions, 452 flow [2024-11-09 10:21:11,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:11,844 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:11,844 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] [2024-11-09 10:21:11,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 10:21:11,844 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:11,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash 608441574, now seen corresponding path program 1 times [2024-11-09 10:21:11,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:11,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522113359] [2024-11-09 10:21:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:11,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:12,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:12,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522113359] [2024-11-09 10:21:12,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522113359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:12,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:12,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:21:12,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164852749] [2024-11-09 10:21:12,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:12,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:21:12,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:12,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:21:12,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:21:12,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 172 [2024-11-09 10:21:12,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 115 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:12,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:12,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 172 [2024-11-09 10:21:12,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:12,859 INFO L124 PetriNetUnfolderBase]: 2059/4557 cut-off events. [2024-11-09 10:21:12,859 INFO L125 PetriNetUnfolderBase]: For 2445/2447 co-relation queries the response was YES. [2024-11-09 10:21:12,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11162 conditions, 4557 events. 2059/4557 cut-off events. For 2445/2447 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 27175 event pairs, 1435 based on Foata normal form. 142/4571 useless extension candidates. Maximal degree in co-relation 11142. Up to 3087 conditions per place. [2024-11-09 10:21:12,893 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 75 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2024-11-09 10:21:12,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 113 transitions, 611 flow [2024-11-09 10:21:12,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:21:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:21:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2024-11-09 10:21:12,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2024-11-09 10:21:12,895 INFO L175 Difference]: Start difference. First operand has 129 places, 115 transitions, 452 flow. Second operand 4 states and 448 transitions. [2024-11-09 10:21:12,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 113 transitions, 611 flow [2024-11-09 10:21:12,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 113 transitions, 605 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:21:12,904 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 438 flow [2024-11-09 10:21:12,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=438, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2024-11-09 10:21:12,905 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -40 predicate places. [2024-11-09 10:21:12,905 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 438 flow [2024-11-09 10:21:12,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:12,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:12,906 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:12,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 10:21:12,906 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:12,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:12,907 INFO L85 PathProgramCache]: Analyzing trace with hash 762566596, now seen corresponding path program 1 times [2024-11-09 10:21:12,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:12,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844392446] [2024-11-09 10:21:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:12,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:21:13,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:13,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844392446] [2024-11-09 10:21:13,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844392446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:21:13,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071274327] [2024-11-09 10:21:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:13,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:21:13,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:21:13,019 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) [2024-11-09 10:21:13,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:21:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:13,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 10:21:13,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:21:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:21:13,289 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:21:13,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071274327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:13,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 10:21:13,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-09 10:21:13,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844237243] [2024-11-09 10:21:13,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:13,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:21:13,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:13,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:21:13,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:21:13,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-09 10:21:13,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:13,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:13,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-09 10:21:13,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:13,833 INFO L124 PetriNetUnfolderBase]: 2059/4556 cut-off events. [2024-11-09 10:21:13,834 INFO L125 PetriNetUnfolderBase]: For 2417/2419 co-relation queries the response was YES. [2024-11-09 10:21:13,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11161 conditions, 4556 events. 2059/4556 cut-off events. For 2417/2419 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 27249 event pairs, 1639 based on Foata normal form. 9/4421 useless extension candidates. Maximal degree in co-relation 11141. Up to 3557 conditions per place. [2024-11-09 10:21:13,857 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 71 selfloop transitions, 1 changer transitions 2/107 dead transitions. [2024-11-09 10:21:13,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 107 transitions, 582 flow [2024-11-09 10:21:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:21:13,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:21:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2024-11-09 10:21:13,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6996124031007752 [2024-11-09 10:21:13,859 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 438 flow. Second operand 3 states and 361 transitions. [2024-11-09 10:21:13,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 107 transitions, 582 flow [2024-11-09 10:21:13,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 107 transitions, 576 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:21:13,868 INFO L231 Difference]: Finished difference. Result has 120 places, 105 transitions, 427 flow [2024-11-09 10:21:13,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=427, PETRI_PLACES=120, PETRI_TRANSITIONS=105} [2024-11-09 10:21:13,869 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -42 predicate places. [2024-11-09 10:21:13,869 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 105 transitions, 427 flow [2024-11-09 10:21:13,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:13,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:13,870 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] [2024-11-09 10:21:13,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:21:14,070 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,SelfDestructingSolverStorable23 [2024-11-09 10:21:14,071 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:14,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:14,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1681820546, now seen corresponding path program 1 times [2024-11-09 10:21:14,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:14,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082383130] [2024-11-09 10:21:14,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:14,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:14,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:14,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082383130] [2024-11-09 10:21:14,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082383130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:14,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:14,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 10:21:14,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86585839] [2024-11-09 10:21:14,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:14,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:21:14,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:14,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:21:14,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:21:14,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-09 10:21:14,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 105 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:14,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:14,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-09 10:21:14,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:15,489 INFO L124 PetriNetUnfolderBase]: 2187/4662 cut-off events. [2024-11-09 10:21:15,490 INFO L125 PetriNetUnfolderBase]: For 2259/2259 co-relation queries the response was YES. [2024-11-09 10:21:15,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11566 conditions, 4662 events. 2187/4662 cut-off events. For 2259/2259 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 26948 event pairs, 810 based on Foata normal form. 0/4538 useless extension candidates. Maximal degree in co-relation 11546. Up to 1633 conditions per place. [2024-11-09 10:21:15,510 INFO L140 encePairwiseOnDemand]: 159/172 looper letters, 118 selfloop transitions, 18 changer transitions 2/159 dead transitions. [2024-11-09 10:21:15,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 159 transitions, 873 flow [2024-11-09 10:21:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:21:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:21:15,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 776 transitions. [2024-11-09 10:21:15,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6445182724252492 [2024-11-09 10:21:15,512 INFO L175 Difference]: Start difference. First operand has 120 places, 105 transitions, 427 flow. Second operand 7 states and 776 transitions. [2024-11-09 10:21:15,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 159 transitions, 873 flow [2024-11-09 10:21:15,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 159 transitions, 864 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:21:15,522 INFO L231 Difference]: Finished difference. Result has 124 places, 106 transitions, 473 flow [2024-11-09 10:21:15,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=473, PETRI_PLACES=124, PETRI_TRANSITIONS=106} [2024-11-09 10:21:15,522 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -38 predicate places. [2024-11-09 10:21:15,522 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 106 transitions, 473 flow [2024-11-09 10:21:15,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:15,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:15,523 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] [2024-11-09 10:21:15,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 10:21:15,524 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:15,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash 907794213, now seen corresponding path program 1 times [2024-11-09 10:21:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:15,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509026986] [2024-11-09 10:21:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:15,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:16,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:16,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509026986] [2024-11-09 10:21:16,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509026986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:16,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:16,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 10:21:16,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523879644] [2024-11-09 10:21:16,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:16,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 10:21:16,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:16,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 10:21:16,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:21:16,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-09 10:21:16,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 106 transitions, 473 flow. Second operand has 10 states, 10 states have (on average 97.2) internal successors, (972), 10 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:16,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:16,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-09 10:21:16,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:17,287 INFO L124 PetriNetUnfolderBase]: 1753/3718 cut-off events. [2024-11-09 10:21:17,287 INFO L125 PetriNetUnfolderBase]: For 1791/1791 co-relation queries the response was YES. [2024-11-09 10:21:17,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9180 conditions, 3718 events. 1753/3718 cut-off events. For 1791/1791 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 20034 event pairs, 375 based on Foata normal form. 0/3616 useless extension candidates. Maximal degree in co-relation 9159. Up to 2718 conditions per place. [2024-11-09 10:21:17,301 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 90 selfloop transitions, 9 changer transitions 4/123 dead transitions. [2024-11-09 10:21:17,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 658 flow [2024-11-09 10:21:17,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:21:17,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:21:17,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 834 transitions. [2024-11-09 10:21:17,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6061046511627907 [2024-11-09 10:21:17,303 INFO L175 Difference]: Start difference. First operand has 124 places, 106 transitions, 473 flow. Second operand 8 states and 834 transitions. [2024-11-09 10:21:17,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 658 flow [2024-11-09 10:21:17,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 123 transitions, 604 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-11-09 10:21:17,309 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 318 flow [2024-11-09 10:21:17,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=318, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2024-11-09 10:21:17,309 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -52 predicate places. [2024-11-09 10:21:17,309 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 318 flow [2024-11-09 10:21:17,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.2) internal successors, (972), 10 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:17,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:17,310 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] [2024-11-09 10:21:17,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 10:21:17,311 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:17,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:17,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1473824688, now seen corresponding path program 1 times [2024-11-09 10:21:17,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:17,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843117099] [2024-11-09 10:21:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:17,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:18,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:18,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843117099] [2024-11-09 10:21:18,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843117099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:18,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:18,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 10:21:18,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629185293] [2024-11-09 10:21:18,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:18,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:21:18,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:21:18,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:21:18,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-09 10:21:18,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 318 flow. Second operand has 13 states, 13 states have (on average 95.23076923076923) internal successors, (1238), 13 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:18,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:18,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-09 10:21:18,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:19,490 INFO L124 PetriNetUnfolderBase]: 1467/3134 cut-off events. [2024-11-09 10:21:19,490 INFO L125 PetriNetUnfolderBase]: For 1180/1180 co-relation queries the response was YES. [2024-11-09 10:21:19,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7431 conditions, 3134 events. 1467/3134 cut-off events. For 1180/1180 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 15630 event pairs, 335 based on Foata normal form. 0/3060 useless extension candidates. Maximal degree in co-relation 7417. Up to 1466 conditions per place. [2024-11-09 10:21:19,501 INFO L140 encePairwiseOnDemand]: 155/172 looper letters, 120 selfloop transitions, 16 changer transitions 14/169 dead transitions. [2024-11-09 10:21:19,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 169 transitions, 854 flow [2024-11-09 10:21:19,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:21:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:21:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1241 transitions. [2024-11-09 10:21:19,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6012596899224806 [2024-11-09 10:21:19,503 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 318 flow. Second operand 12 states and 1241 transitions. [2024-11-09 10:21:19,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 169 transitions, 854 flow [2024-11-09 10:21:19,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 169 transitions, 832 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-09 10:21:19,507 INFO L231 Difference]: Finished difference. Result has 116 places, 93 transitions, 334 flow [2024-11-09 10:21:19,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=334, PETRI_PLACES=116, PETRI_TRANSITIONS=93} [2024-11-09 10:21:19,508 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -46 predicate places. [2024-11-09 10:21:19,508 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 93 transitions, 334 flow [2024-11-09 10:21:19,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 95.23076923076923) internal successors, (1238), 13 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:19,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:19,509 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] [2024-11-09 10:21:19,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-09 10:21:19,509 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:19,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:19,509 INFO L85 PathProgramCache]: Analyzing trace with hash -585278985, now seen corresponding path program 1 times [2024-11-09 10:21:19,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:19,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757833809] [2024-11-09 10:21:19,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:19,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:21,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:21,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757833809] [2024-11-09 10:21:21,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757833809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:21,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:21,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-09 10:21:21,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989604635] [2024-11-09 10:21:21,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:21,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:21:21,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:21,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:21:21,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-09 10:21:22,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 172 [2024-11-09 10:21:22,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 93 transitions, 334 flow. Second operand has 19 states, 19 states have (on average 64.26315789473684) internal successors, (1221), 19 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:22,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:22,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 172 [2024-11-09 10:21:22,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:23,787 INFO L124 PetriNetUnfolderBase]: 1625/3435 cut-off events. [2024-11-09 10:21:23,787 INFO L125 PetriNetUnfolderBase]: For 1487/1487 co-relation queries the response was YES. [2024-11-09 10:21:23,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8314 conditions, 3435 events. 1625/3435 cut-off events. For 1487/1487 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 17057 event pairs, 272 based on Foata normal form. 0/3346 useless extension candidates. Maximal degree in co-relation 8298. Up to 1150 conditions per place. [2024-11-09 10:21:23,799 INFO L140 encePairwiseOnDemand]: 151/172 looper letters, 149 selfloop transitions, 20 changer transitions 15/203 dead transitions. [2024-11-09 10:21:23,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 203 transitions, 1056 flow [2024-11-09 10:21:23,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 10:21:23,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 10:21:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1159 transitions. [2024-11-09 10:21:23,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4211482558139535 [2024-11-09 10:21:23,801 INFO L175 Difference]: Start difference. First operand has 116 places, 93 transitions, 334 flow. Second operand 16 states and 1159 transitions. [2024-11-09 10:21:23,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 203 transitions, 1056 flow [2024-11-09 10:21:23,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 203 transitions, 1028 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-09 10:21:23,807 INFO L231 Difference]: Finished difference. Result has 125 places, 99 transitions, 387 flow [2024-11-09 10:21:23,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=387, PETRI_PLACES=125, PETRI_TRANSITIONS=99} [2024-11-09 10:21:23,807 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -37 predicate places. [2024-11-09 10:21:23,808 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 99 transitions, 387 flow [2024-11-09 10:21:23,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 64.26315789473684) internal successors, (1221), 19 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:23,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:23,808 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] [2024-11-09 10:21:23,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-09 10:21:23,809 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:23,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:23,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2085924187, now seen corresponding path program 1 times [2024-11-09 10:21:23,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:23,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608923979] [2024-11-09 10:21:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:23,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:23,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:23,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:23,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608923979] [2024-11-09 10:21:23,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608923979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:23,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:23,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:21:23,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034768287] [2024-11-09 10:21:23,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:23,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:21:23,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:23,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:21:23,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:21:24,080 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-09 10:21:24,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 99 transitions, 387 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) [2024-11-09 10:21:24,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:24,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-09 10:21:24,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:24,362 INFO L124 PetriNetUnfolderBase]: 1494/3316 cut-off events. [2024-11-09 10:21:24,362 INFO L125 PetriNetUnfolderBase]: For 1661/1668 co-relation queries the response was YES. [2024-11-09 10:21:24,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8084 conditions, 3316 events. 1494/3316 cut-off events. For 1661/1668 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 17379 event pairs, 752 based on Foata normal form. 12/3257 useless extension candidates. Maximal degree in co-relation 8064. Up to 1868 conditions per place. [2024-11-09 10:21:24,376 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 116 selfloop transitions, 3 changer transitions 0/151 dead transitions. [2024-11-09 10:21:24,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 151 transitions, 844 flow [2024-11-09 10:21:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:21:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:21:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2024-11-09 10:21:24,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7311046511627907 [2024-11-09 10:21:24,378 INFO L175 Difference]: Start difference. First operand has 125 places, 99 transitions, 387 flow. Second operand 4 states and 503 transitions. [2024-11-09 10:21:24,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 151 transitions, 844 flow [2024-11-09 10:21:24,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 151 transitions, 809 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-09 10:21:24,385 INFO L231 Difference]: Finished difference. Result has 119 places, 99 transitions, 374 flow [2024-11-09 10:21:24,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=115, 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=374, PETRI_PLACES=119, PETRI_TRANSITIONS=99} [2024-11-09 10:21:24,386 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -43 predicate places. [2024-11-09 10:21:24,386 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 99 transitions, 374 flow [2024-11-09 10:21:24,386 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) [2024-11-09 10:21:24,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:24,387 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] [2024-11-09 10:21:24,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-09 10:21:24,387 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:24,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:24,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1440627542, now seen corresponding path program 1 times [2024-11-09 10:21:24,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:24,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73652446] [2024-11-09 10:21:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:24,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:26,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:26,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73652446] [2024-11-09 10:21:26,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73652446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:26,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:26,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-09 10:21:26,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780789229] [2024-11-09 10:21:26,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:26,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 10:21:26,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:26,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 10:21:26,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-09 10:21:28,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-09 10:21:28,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 99 transitions, 374 flow. Second operand has 21 states, 21 states have (on average 94.38095238095238) internal successors, (1982), 21 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:28,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:28,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-09 10:21:28,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:28,966 INFO L124 PetriNetUnfolderBase]: 1597/3387 cut-off events. [2024-11-09 10:21:28,966 INFO L125 PetriNetUnfolderBase]: For 2205/2205 co-relation queries the response was YES. [2024-11-09 10:21:28,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8729 conditions, 3387 events. 1597/3387 cut-off events. For 2205/2205 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 16680 event pairs, 263 based on Foata normal form. 0/3348 useless extension candidates. Maximal degree in co-relation 8708. Up to 1099 conditions per place. [2024-11-09 10:21:28,980 INFO L140 encePairwiseOnDemand]: 148/172 looper letters, 154 selfloop transitions, 23 changer transitions 15/212 dead transitions. [2024-11-09 10:21:28,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 212 transitions, 1181 flow [2024-11-09 10:21:28,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 10:21:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 10:21:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1830 transitions. [2024-11-09 10:21:28,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5910852713178295 [2024-11-09 10:21:28,983 INFO L175 Difference]: Start difference. First operand has 119 places, 99 transitions, 374 flow. Second operand 18 states and 1830 transitions. [2024-11-09 10:21:28,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 212 transitions, 1181 flow [2024-11-09 10:21:28,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 212 transitions, 1135 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 10:21:28,990 INFO L231 Difference]: Finished difference. Result has 136 places, 101 transitions, 432 flow [2024-11-09 10:21:28,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=432, PETRI_PLACES=136, PETRI_TRANSITIONS=101} [2024-11-09 10:21:28,990 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -26 predicate places. [2024-11-09 10:21:28,990 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 101 transitions, 432 flow [2024-11-09 10:21:28,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 94.38095238095238) internal successors, (1982), 21 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:28,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:28,992 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] [2024-11-09 10:21:28,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-09 10:21:28,992 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:28,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:28,993 INFO L85 PathProgramCache]: Analyzing trace with hash 819514334, now seen corresponding path program 1 times [2024-11-09 10:21:28,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:28,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880813208] [2024-11-09 10:21:28,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:28,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:32,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:32,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880813208] [2024-11-09 10:21:32,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880813208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:32,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:32,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2024-11-09 10:21:32,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755342505] [2024-11-09 10:21:32,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:32,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 10:21:32,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:32,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 10:21:32,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2024-11-09 10:21:36,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 172 [2024-11-09 10:21:36,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 101 transitions, 432 flow. Second operand has 28 states, 28 states have (on average 92.85714285714286) internal successors, (2600), 28 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:36,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:36,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 172 [2024-11-09 10:21:36,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:38,904 INFO L124 PetriNetUnfolderBase]: 1889/4023 cut-off events. [2024-11-09 10:21:38,904 INFO L125 PetriNetUnfolderBase]: For 2617/2618 co-relation queries the response was YES. [2024-11-09 10:21:38,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10681 conditions, 4023 events. 1889/4023 cut-off events. For 2617/2618 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 21481 event pairs, 450 based on Foata normal form. 0/3968 useless extension candidates. Maximal degree in co-relation 10657. Up to 2651 conditions per place. [2024-11-09 10:21:38,921 INFO L140 encePairwiseOnDemand]: 142/172 looper letters, 157 selfloop transitions, 51 changer transitions 20/248 dead transitions. [2024-11-09 10:21:38,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 248 transitions, 1477 flow [2024-11-09 10:21:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 10:21:38,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-09 10:21:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2849 transitions. [2024-11-09 10:21:38,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5711708099438653 [2024-11-09 10:21:38,924 INFO L175 Difference]: Start difference. First operand has 136 places, 101 transitions, 432 flow. Second operand 29 states and 2849 transitions. [2024-11-09 10:21:38,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 248 transitions, 1477 flow [2024-11-09 10:21:38,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 248 transitions, 1389 flow, removed 0 selfloop flow, removed 15 redundant places. [2024-11-09 10:21:38,934 INFO L231 Difference]: Finished difference. Result has 167 places, 147 transitions, 852 flow [2024-11-09 10:21:38,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=852, PETRI_PLACES=167, PETRI_TRANSITIONS=147} [2024-11-09 10:21:38,935 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 5 predicate places. [2024-11-09 10:21:38,935 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 147 transitions, 852 flow [2024-11-09 10:21:38,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 92.85714285714286) internal successors, (2600), 28 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:38,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:38,937 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:38,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-09 10:21:38,937 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:38,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:38,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2032170018, now seen corresponding path program 2 times [2024-11-09 10:21:38,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:38,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533399289] [2024-11-09 10:21:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:38,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:42,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:42,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533399289] [2024-11-09 10:21:42,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533399289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:42,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:42,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2024-11-09 10:21:42,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573497864] [2024-11-09 10:21:42,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:42,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 10:21:42,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:42,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 10:21:42,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2024-11-09 10:21:47,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-09 10:21:47,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 147 transitions, 852 flow. Second operand has 28 states, 28 states have (on average 93.82142857142857) internal successors, (2627), 28 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:47,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:47,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-09 10:21:47,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:49,204 INFO L124 PetriNetUnfolderBase]: 2128/4548 cut-off events. [2024-11-09 10:21:49,204 INFO L125 PetriNetUnfolderBase]: For 6808/6808 co-relation queries the response was YES. [2024-11-09 10:21:49,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13776 conditions, 4548 events. 2128/4548 cut-off events. For 6808/6808 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 25399 event pairs, 497 based on Foata normal form. 0/4487 useless extension candidates. Maximal degree in co-relation 13734. Up to 2972 conditions per place. [2024-11-09 10:21:49,232 INFO L140 encePairwiseOnDemand]: 144/172 looper letters, 194 selfloop transitions, 47 changer transitions 22/284 dead transitions. [2024-11-09 10:21:49,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 284 transitions, 2051 flow [2024-11-09 10:21:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 10:21:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-09 10:21:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2775 transitions. [2024-11-09 10:21:49,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5762043189368771 [2024-11-09 10:21:49,235 INFO L175 Difference]: Start difference. First operand has 167 places, 147 transitions, 852 flow. Second operand 28 states and 2775 transitions. [2024-11-09 10:21:49,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 284 transitions, 2051 flow [2024-11-09 10:21:49,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 284 transitions, 2023 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-09 10:21:49,253 INFO L231 Difference]: Finished difference. Result has 207 places, 181 transitions, 1313 flow [2024-11-09 10:21:49,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1313, PETRI_PLACES=207, PETRI_TRANSITIONS=181} [2024-11-09 10:21:49,253 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 45 predicate places. [2024-11-09 10:21:49,253 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 181 transitions, 1313 flow [2024-11-09 10:21:49,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 93.82142857142857) internal successors, (2627), 28 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:21:49,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:49,255 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] [2024-11-09 10:21:49,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-09 10:21:49,255 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:49,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:49,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1530675948, now seen corresponding path program 3 times [2024-11-09 10:21:49,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:49,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99121615] [2024-11-09 10:21:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:49,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:51,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:51,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99121615] [2024-11-09 10:21:51,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99121615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:51,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:51,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-09 10:21:51,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524758430] [2024-11-09 10:21:51,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:51,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 10:21:51,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:51,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 10:21:51,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650