./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/queue_longer.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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:18:56,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:18:56,272 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:18:56,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:18:56,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:18:56,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:18:56,315 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:18:56,317 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:18:56,318 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:18:56,318 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:18:56,318 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:18:56,318 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:18:56,319 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:18:56,319 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:18:56,319 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:18:56,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:18:56,320 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:18:56,320 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:18:56,320 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:18:56,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:18:56,321 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:18:56,324 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:18:56,324 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:18:56,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:18:56,325 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:18:56,325 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:18:56,325 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:18:56,325 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:18:56,326 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:18:56,326 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:18:56,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:18:56,330 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:18:56,330 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:18:56,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:18:56,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:18:56,331 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:18:56,331 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:18:56,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:18:56,331 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:18:56,331 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:18:56,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:18:56,332 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:18:56,332 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2024-11-19 09:18:56,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:18:56,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:18:56,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:18:56,600 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:18:56,600 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:18:56,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_longer.i [2024-11-19 09:18:57,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:18:58,210 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:18:58,211 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longer.i [2024-11-19 09:18:58,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39470a82a/ae6e46af78154c458a435ce3030cf8ab/FLAG2fc8ead6f [2024-11-19 09:18:58,250 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39470a82a/ae6e46af78154c458a435ce3030cf8ab [2024-11-19 09:18:58,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:18:58,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:18:58,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:18:58,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:18:58,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:18:58,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:58,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1544ddea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58, skipping insertion in model container [2024-11-19 09:18:58,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:58,312 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:18:58,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:18:58,707 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:18:58,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:18:58,840 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:18:58,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58 WrapperNode [2024-11-19 09:18:58,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:18:58,841 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:18:58,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:18:58,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:18:58,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:58,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:58,916 INFO L138 Inliner]: procedures = 274, calls = 859, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1046 [2024-11-19 09:18:58,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:18:58,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:18:58,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:18:58,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:18:58,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:58,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:58,937 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:58,957 INFO L175 MemorySlicer]: Split 844 memory accesses to 4 slices as follows [2, 5, 434, 403]. 51 percent of accesses are in the largest equivalence class. The 810 initializations are split as follows [2, 5, 403, 400]. The 16 writes are split as follows [0, 0, 14, 2]. [2024-11-19 09:18:58,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:58,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:58,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:58,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:58,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:59,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:59,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:18:59,018 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:18:59,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:18:59,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:18:59,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:59,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:18:59,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:18:59,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:18:59,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:18:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 09:18:59,159 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 09:18:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 09:18:59,159 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 09:18:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 09:18:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:18:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:18:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 09:18:59,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 09:18:59,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:18:59,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:18:59,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 09:18:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 09:18:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 09:18:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:18:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:18:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:18:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 09:18:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 09:18:59,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:18:59,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:18:59,186 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:18:59,341 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:18:59,342 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:19:00,409 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:19:00,410 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:19:06,073 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:19:06,073 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:19:06,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:19:06 BoogieIcfgContainer [2024-11-19 09:19:06,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:19:06,075 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:19:06,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:19:06,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:19:06,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:18:58" (1/3) ... [2024-11-19 09:19:06,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759a2c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:19:06, skipping insertion in model container [2024-11-19 09:19:06,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58" (2/3) ... [2024-11-19 09:19:06,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759a2c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:19:06, skipping insertion in model container [2024-11-19 09:19:06,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:19:06" (3/3) ... [2024-11-19 09:19:06,081 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2024-11-19 09:19:06,095 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:19:06,095 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2024-11-19 09:19:06,096 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:19:06,202 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 09:19:06,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 358 flow [2024-11-19 09:19:06,314 INFO L124 PetriNetUnfolderBase]: 14/170 cut-off events. [2024-11-19 09:19:06,314 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:19:06,320 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 524 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. [2024-11-19 09:19:06,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 172 transitions, 358 flow [2024-11-19 09:19:06,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 169 transitions, 350 flow [2024-11-19 09:19:06,337 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:19:06,343 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;@209c0657, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:19:06,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 134 error locations. [2024-11-19 09:19:06,371 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:19:06,372 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-19 09:19:06,372 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:19:06,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:06,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-19 09:19:06,374 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)] === [2024-11-19 09:19:06,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash 73258, now seen corresponding path program 1 times [2024-11-19 09:19:06,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:06,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563851284] [2024-11-19 09:19:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:06,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:06,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:06,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563851284] [2024-11-19 09:19:06,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563851284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:06,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:06,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:19:06,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517242179] [2024-11-19 09:19:06,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:06,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:06,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:07,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:07,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:07,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-19 09:19:07,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 169 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:07,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:07,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-19 09:19:07,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:07,709 INFO L124 PetriNetUnfolderBase]: 1744/4653 cut-off events. [2024-11-19 09:19:07,709 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-19 09:19:07,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7479 conditions, 4653 events. 1744/4653 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37036 event pairs, 1393 based on Foata normal form. 182/3587 useless extension candidates. Maximal degree in co-relation 7362. Up to 2745 conditions per place. [2024-11-19 09:19:07,739 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 58 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2024-11-19 09:19:07,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 154 transitions, 440 flow [2024-11-19 09:19:07,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:07,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2024-11-19 09:19:07,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7015503875968992 [2024-11-19 09:19:07,752 INFO L175 Difference]: Start difference. First operand has 162 places, 169 transitions, 350 flow. Second operand 3 states and 362 transitions. [2024-11-19 09:19:07,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 154 transitions, 440 flow [2024-11-19 09:19:07,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 154 transitions, 432 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:19:07,759 INFO L231 Difference]: Finished difference. Result has 151 places, 154 transitions, 316 flow [2024-11-19 09:19:07,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=151, PETRI_TRANSITIONS=154} [2024-11-19 09:19:07,763 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -11 predicate places. [2024-11-19 09:19:07,763 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 154 transitions, 316 flow [2024-11-19 09:19:07,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:07,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:07,764 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-19 09:19:07,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:19:07,764 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)] === [2024-11-19 09:19:07,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:07,765 INFO L85 PathProgramCache]: Analyzing trace with hash 73259, now seen corresponding path program 1 times [2024-11-19 09:19:07,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:07,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527172460] [2024-11-19 09:19:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:07,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:08,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:08,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527172460] [2024-11-19 09:19:08,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527172460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:08,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:08,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:19:08,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625851866] [2024-11-19 09:19:08,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:08,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:08,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:08,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:08,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:08,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-19 09:19:08,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 154 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:08,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:08,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-19 09:19:08,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:08,562 INFO L124 PetriNetUnfolderBase]: 1744/4650 cut-off events. [2024-11-19 09:19:08,563 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-19 09:19:08,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7430 conditions, 4650 events. 1744/4650 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37031 event pairs, 1393 based on Foata normal form. 3/3407 useless extension candidates. Maximal degree in co-relation 7419. Up to 2745 conditions per place. [2024-11-19 09:19:08,588 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 58 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2024-11-19 09:19:08,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 151 transitions, 430 flow [2024-11-19 09:19:08,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:08,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2024-11-19 09:19:08,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6918604651162791 [2024-11-19 09:19:08,590 INFO L175 Difference]: Start difference. First operand has 151 places, 154 transitions, 316 flow. Second operand 3 states and 357 transitions. [2024-11-19 09:19:08,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 151 transitions, 430 flow [2024-11-19 09:19:08,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 151 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:08,595 INFO L231 Difference]: Finished difference. Result has 148 places, 151 transitions, 310 flow [2024-11-19 09:19:08,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=148, PETRI_TRANSITIONS=151} [2024-11-19 09:19:08,596 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -14 predicate places. [2024-11-19 09:19:08,596 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 151 transitions, 310 flow [2024-11-19 09:19:08,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:08,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:08,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:19:08,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:19:08,596 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)] === [2024-11-19 09:19:08,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:08,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2110278690, now seen corresponding path program 1 times [2024-11-19 09:19:08,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:08,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233204650] [2024-11-19 09:19:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:08,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:09,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:09,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233204650] [2024-11-19 09:19:09,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233204650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:09,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:09,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:09,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535281683] [2024-11-19 09:19:09,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:09,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:09,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:09,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:09,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:09,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-19 09:19:09,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 151 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:09,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:09,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-19 09:19:09,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:09,884 INFO L124 PetriNetUnfolderBase]: 1744/4648 cut-off events. [2024-11-19 09:19:09,884 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-19 09:19:09,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7428 conditions, 4648 events. 1744/4648 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 36988 event pairs, 1393 based on Foata normal form. 1/3405 useless extension candidates. Maximal degree in co-relation 7417. Up to 2744 conditions per place. [2024-11-19 09:19:09,907 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 57 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2024-11-19 09:19:09,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 149 transitions, 426 flow [2024-11-19 09:19:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:09,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2024-11-19 09:19:09,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6656976744186046 [2024-11-19 09:19:09,910 INFO L175 Difference]: Start difference. First operand has 148 places, 151 transitions, 310 flow. Second operand 4 states and 458 transitions. [2024-11-19 09:19:09,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 149 transitions, 426 flow [2024-11-19 09:19:09,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 149 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:09,912 INFO L231 Difference]: Finished difference. Result has 147 places, 149 transitions, 308 flow [2024-11-19 09:19:09,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=147, PETRI_TRANSITIONS=149} [2024-11-19 09:19:09,916 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -15 predicate places. [2024-11-19 09:19:09,916 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 149 transitions, 308 flow [2024-11-19 09:19:09,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:09,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:09,917 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:19:09,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:19:09,917 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)] === [2024-11-19 09:19:09,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:09,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2110278689, now seen corresponding path program 1 times [2024-11-19 09:19:09,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:09,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053981554] [2024-11-19 09:19:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:09,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:10,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:10,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053981554] [2024-11-19 09:19:10,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053981554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:10,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:10,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:10,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81223475] [2024-11-19 09:19:10,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:10,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:10,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:10,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:10,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:10,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-19 09:19:10,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 149 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:10,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:10,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-19 09:19:10,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:10,999 INFO L124 PetriNetUnfolderBase]: 1744/4646 cut-off events. [2024-11-19 09:19:10,999 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-19 09:19:11,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7427 conditions, 4646 events. 1744/4646 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 36986 event pairs, 1393 based on Foata normal form. 2/3405 useless extension candidates. Maximal degree in co-relation 7412. Up to 2744 conditions per place. [2024-11-19 09:19:11,022 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 57 selfloop transitions, 3 changer transitions 0/147 dead transitions. [2024-11-19 09:19:11,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 147 transitions, 424 flow [2024-11-19 09:19:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:11,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2024-11-19 09:19:11,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6656976744186046 [2024-11-19 09:19:11,024 INFO L175 Difference]: Start difference. First operand has 147 places, 149 transitions, 308 flow. Second operand 4 states and 458 transitions. [2024-11-19 09:19:11,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 147 transitions, 424 flow [2024-11-19 09:19:11,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 147 transitions, 418 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:11,028 INFO L231 Difference]: Finished difference. Result has 145 places, 147 transitions, 304 flow [2024-11-19 09:19:11,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=145, PETRI_TRANSITIONS=147} [2024-11-19 09:19:11,029 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -17 predicate places. [2024-11-19 09:19:11,030 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 147 transitions, 304 flow [2024-11-19 09:19:11,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:11,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:11,031 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:11,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:19:11,031 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:11,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:11,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1491928031, now seen corresponding path program 1 times [2024-11-19 09:19:11,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:11,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834229006] [2024-11-19 09:19:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:11,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:11,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:11,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834229006] [2024-11-19 09:19:11,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834229006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:11,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:11,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:11,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085014405] [2024-11-19 09:19:11,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:11,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:11,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:11,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:11,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:11,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 172 [2024-11-19 09:19:11,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 147 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:11,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:11,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 172 [2024-11-19 09:19:11,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:11,841 INFO L124 PetriNetUnfolderBase]: 1703/4145 cut-off events. [2024-11-19 09:19:11,842 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-19 09:19:11,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6882 conditions, 4145 events. 1703/4145 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 30733 event pairs, 702 based on Foata normal form. 204/3609 useless extension candidates. Maximal degree in co-relation 6867. Up to 1414 conditions per place. [2024-11-19 09:19:11,865 INFO L140 encePairwiseOnDemand]: 151/172 looper letters, 74 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2024-11-19 09:19:11,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 150 transitions, 469 flow [2024-11-19 09:19:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 435 transitions. [2024-11-19 09:19:11,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6322674418604651 [2024-11-19 09:19:11,868 INFO L175 Difference]: Start difference. First operand has 145 places, 147 transitions, 304 flow. Second operand 4 states and 435 transitions. [2024-11-19 09:19:11,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 150 transitions, 469 flow [2024-11-19 09:19:11,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 150 transitions, 463 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:11,870 INFO L231 Difference]: Finished difference. Result has 129 places, 131 transitions, 276 flow [2024-11-19 09:19:11,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=129, PETRI_TRANSITIONS=131} [2024-11-19 09:19:11,871 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -33 predicate places. [2024-11-19 09:19:11,871 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 131 transitions, 276 flow [2024-11-19 09:19:11,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:11,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:11,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:11,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:19:11,872 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:11,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:11,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1491928032, now seen corresponding path program 1 times [2024-11-19 09:19:11,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:11,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829571984] [2024-11-19 09:19:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:11,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:12,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:12,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829571984] [2024-11-19 09:19:12,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829571984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:12,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:12,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:12,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414773790] [2024-11-19 09:19:12,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:12,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:12,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:12,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:12,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:12,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 172 [2024-11-19 09:19:12,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 131 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:12,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:12,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 172 [2024-11-19 09:19:12,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:12,753 INFO L124 PetriNetUnfolderBase]: 1703/3676 cut-off events. [2024-11-19 09:19:12,753 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-19 09:19:12,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6547 conditions, 3676 events. 1703/3676 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 24522 event pairs, 702 based on Foata normal form. 204/3341 useless extension candidates. Maximal degree in co-relation 2518. Up to 1414 conditions per place. [2024-11-19 09:19:12,769 INFO L140 encePairwiseOnDemand]: 153/172 looper letters, 74 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2024-11-19 09:19:12,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 136 transitions, 445 flow [2024-11-19 09:19:12,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2024-11-19 09:19:12,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6409883720930233 [2024-11-19 09:19:12,771 INFO L175 Difference]: Start difference. First operand has 129 places, 131 transitions, 276 flow. Second operand 4 states and 441 transitions. [2024-11-19 09:19:12,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 136 transitions, 445 flow [2024-11-19 09:19:12,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 136 transitions, 435 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:12,774 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 248 flow [2024-11-19 09:19:12,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2024-11-19 09:19:12,774 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -47 predicate places. [2024-11-19 09:19:12,775 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 248 flow [2024-11-19 09:19:12,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:12,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:12,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:12,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:19:12,775 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:12,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:12,776 INFO L85 PathProgramCache]: Analyzing trace with hash -994868919, now seen corresponding path program 1 times [2024-11-19 09:19:12,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:12,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993596147] [2024-11-19 09:19:12,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:12,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:13,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:13,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993596147] [2024-11-19 09:19:13,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993596147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:13,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:13,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:19:13,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386499757] [2024-11-19 09:19:13,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:13,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:19:13,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:13,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:19:13,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:19:14,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 172 [2024-11-19 09:19:14,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:14,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:14,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 172 [2024-11-19 09:19:14,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:14,898 INFO L124 PetriNetUnfolderBase]: 2502/5392 cut-off events. [2024-11-19 09:19:14,898 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-11-19 09:19:14,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9549 conditions, 5392 events. 2502/5392 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 38771 event pairs, 536 based on Foata normal form. 0/4394 useless extension candidates. Maximal degree in co-relation 3717. Up to 3436 conditions per place. [2024-11-19 09:19:14,919 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 125 selfloop transitions, 11 changer transitions 0/184 dead transitions. [2024-11-19 09:19:14,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 184 transitions, 659 flow [2024-11-19 09:19:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:19:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:19:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 663 transitions. [2024-11-19 09:19:14,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5506644518272426 [2024-11-19 09:19:14,922 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 248 flow. Second operand 7 states and 663 transitions. [2024-11-19 09:19:14,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 184 transitions, 659 flow [2024-11-19 09:19:14,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 184 transitions, 647 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:14,933 INFO L231 Difference]: Finished difference. Result has 122 places, 127 transitions, 312 flow [2024-11-19 09:19:14,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=312, PETRI_PLACES=122, PETRI_TRANSITIONS=127} [2024-11-19 09:19:14,933 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -40 predicate places. [2024-11-19 09:19:14,934 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 127 transitions, 312 flow [2024-11-19 09:19:14,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:14,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:14,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:14,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:19:14,934 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:14,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:14,935 INFO L85 PathProgramCache]: Analyzing trace with hash 739158375, now seen corresponding path program 1 times [2024-11-19 09:19:14,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:14,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683020312] [2024-11-19 09:19:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:14,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:15,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:15,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683020312] [2024-11-19 09:19:15,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683020312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:15,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:15,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:15,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8158226] [2024-11-19 09:19:15,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:15,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:15,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:15,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:15,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:15,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-19 09:19:15,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 127 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:15,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:15,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-19 09:19:15,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:15,856 INFO L124 PetriNetUnfolderBase]: 2073/4641 cut-off events. [2024-11-19 09:19:15,857 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2024-11-19 09:19:15,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8317 conditions, 4641 events. 2073/4641 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 33387 event pairs, 892 based on Foata normal form. 375/4320 useless extension candidates. Maximal degree in co-relation 8044. Up to 1823 conditions per place. [2024-11-19 09:19:15,875 INFO L140 encePairwiseOnDemand]: 161/172 looper letters, 104 selfloop transitions, 3 changer transitions 0/158 dead transitions. [2024-11-19 09:19:15,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 158 transitions, 609 flow [2024-11-19 09:19:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:15,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:15,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2024-11-19 09:19:15,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.690406976744186 [2024-11-19 09:19:15,879 INFO L175 Difference]: Start difference. First operand has 122 places, 127 transitions, 312 flow. Second operand 4 states and 475 transitions. [2024-11-19 09:19:15,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 158 transitions, 609 flow [2024-11-19 09:19:15,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 158 transitions, 607 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:15,882 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 300 flow [2024-11-19 09:19:15,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2024-11-19 09:19:15,883 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -46 predicate places. [2024-11-19 09:19:15,883 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 300 flow [2024-11-19 09:19:15,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:15,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:15,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:15,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:19:15,884 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:15,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:15,885 INFO L85 PathProgramCache]: Analyzing trace with hash 739158376, now seen corresponding path program 1 times [2024-11-19 09:19:15,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:15,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798924039] [2024-11-19 09:19:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:15,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:16,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:16,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:16,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798924039] [2024-11-19 09:19:16,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798924039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:16,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:16,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:16,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454258440] [2024-11-19 09:19:16,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:16,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:16,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:16,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:16,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:16,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-19 09:19:16,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:16,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:16,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-19 09:19:16,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:16,404 INFO L124 PetriNetUnfolderBase]: 1382/3055 cut-off events. [2024-11-19 09:19:16,405 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-11-19 09:19:16,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 3055 events. 1382/3055 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17518 event pairs, 703 based on Foata normal form. 55/2727 useless extension candidates. Maximal degree in co-relation 5503. Up to 1211 conditions per place. [2024-11-19 09:19:16,416 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 81 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2024-11-19 09:19:16,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 132 transitions, 468 flow [2024-11-19 09:19:16,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:16,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:16,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2024-11-19 09:19:16,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.751937984496124 [2024-11-19 09:19:16,418 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 300 flow. Second operand 3 states and 388 transitions. [2024-11-19 09:19:16,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 132 transitions, 468 flow [2024-11-19 09:19:16,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 132 transitions, 439 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-11-19 09:19:16,421 INFO L231 Difference]: Finished difference. Result has 107 places, 109 transitions, 235 flow [2024-11-19 09:19:16,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=107, PETRI_TRANSITIONS=109} [2024-11-19 09:19:16,422 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -55 predicate places. [2024-11-19 09:19:16,422 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 109 transitions, 235 flow [2024-11-19 09:19:16,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:16,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:16,424 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] [2024-11-19 09:19:16,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:19:16,424 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:16,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:16,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2068756551, now seen corresponding path program 1 times [2024-11-19 09:19:16,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:16,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299076050] [2024-11-19 09:19:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:16,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:16,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:16,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299076050] [2024-11-19 09:19:16,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299076050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:16,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:16,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:19:16,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110962897] [2024-11-19 09:19:16,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:16,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:16,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:16,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:16,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:16,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-19 09:19:16,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 109 transitions, 235 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) [2024-11-19 09:19:16,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:16,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-19 09:19:16,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:17,070 INFO L124 PetriNetUnfolderBase]: 1392/3119 cut-off events. [2024-11-19 09:19:17,071 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-19 09:19:17,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 3119 events. 1392/3119 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18160 event pairs, 1089 based on Foata normal form. 0/2730 useless extension candidates. Maximal degree in co-relation 5497. Up to 2216 conditions per place. [2024-11-19 09:19:17,084 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 60 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2024-11-19 09:19:17,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 108 transitions, 355 flow [2024-11-19 09:19:17,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:17,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:17,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2024-11-19 09:19:17,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6996124031007752 [2024-11-19 09:19:17,086 INFO L175 Difference]: Start difference. First operand has 107 places, 109 transitions, 235 flow. Second operand 3 states and 361 transitions. [2024-11-19 09:19:17,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 108 transitions, 355 flow [2024-11-19 09:19:17,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 108 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:17,088 INFO L231 Difference]: Finished difference. Result has 107 places, 108 transitions, 232 flow [2024-11-19 09:19:17,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=107, PETRI_TRANSITIONS=108} [2024-11-19 09:19:17,090 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -55 predicate places. [2024-11-19 09:19:17,090 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 108 transitions, 232 flow [2024-11-19 09:19:17,091 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) [2024-11-19 09:19:17,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:17,091 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] [2024-11-19 09:19:17,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:19:17,091 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:17,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:17,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2068756552, now seen corresponding path program 1 times [2024-11-19 09:19:17,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:17,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798272007] [2024-11-19 09:19:17,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:17,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:17,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:17,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798272007] [2024-11-19 09:19:17,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798272007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:17,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:17,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:19:17,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422883293] [2024-11-19 09:19:17,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:17,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:17,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:17,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:17,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:17,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-19 09:19:17,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 108 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:17,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:17,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-19 09:19:17,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:17,702 INFO L124 PetriNetUnfolderBase]: 1392/3052 cut-off events. [2024-11-19 09:19:17,702 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-19 09:19:17,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5422 conditions, 3052 events. 1392/3052 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17365 event pairs, 1089 based on Foata normal form. 77/2795 useless extension candidates. Maximal degree in co-relation 5417. Up to 2216 conditions per place. [2024-11-19 09:19:17,711 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 60 selfloop transitions, 1 changer transitions 0/105 dead transitions. [2024-11-19 09:19:17,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 348 flow [2024-11-19 09:19:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2024-11-19 09:19:17,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6918604651162791 [2024-11-19 09:19:17,713 INFO L175 Difference]: Start difference. First operand has 107 places, 108 transitions, 232 flow. Second operand 3 states and 357 transitions. [2024-11-19 09:19:17,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 348 flow [2024-11-19 09:19:17,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:17,714 INFO L231 Difference]: Finished difference. Result has 105 places, 105 transitions, 227 flow [2024-11-19 09:19:17,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=105, PETRI_TRANSITIONS=105} [2024-11-19 09:19:17,715 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -57 predicate places. [2024-11-19 09:19:17,715 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 105 transitions, 227 flow [2024-11-19 09:19:17,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:17,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:17,719 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] [2024-11-19 09:19:17,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:19:17,719 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:17,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:17,720 INFO L85 PathProgramCache]: Analyzing trace with hash 293058829, now seen corresponding path program 1 times [2024-11-19 09:19:17,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:17,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280614303] [2024-11-19 09:19:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:17,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:17,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:17,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280614303] [2024-11-19 09:19:17,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280614303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:17,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:17,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:17,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688979621] [2024-11-19 09:19:17,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:17,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:17,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:17,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:17,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:18,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-19 09:19:18,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 105 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:18,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:18,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-19 09:19:18,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:18,349 INFO L124 PetriNetUnfolderBase]: 1392/3028 cut-off events. [2024-11-19 09:19:18,349 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-19 09:19:18,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5399 conditions, 3028 events. 1392/3028 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17063 event pairs, 1074 based on Foata normal form. 12/2730 useless extension candidates. Maximal degree in co-relation 5394. Up to 2187 conditions per place. [2024-11-19 09:19:18,359 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 66 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-11-19 09:19:18,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 111 transitions, 378 flow [2024-11-19 09:19:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2024-11-19 09:19:18,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-19 09:19:18,361 INFO L175 Difference]: Start difference. First operand has 105 places, 105 transitions, 227 flow. Second operand 4 states and 466 transitions. [2024-11-19 09:19:18,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 111 transitions, 378 flow [2024-11-19 09:19:18,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 111 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:18,363 INFO L231 Difference]: Finished difference. Result has 105 places, 103 transitions, 228 flow [2024-11-19 09:19:18,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2024-11-19 09:19:18,365 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -57 predicate places. [2024-11-19 09:19:18,365 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 228 flow [2024-11-19 09:19:18,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:18,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:18,366 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] [2024-11-19 09:19:18,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:19:18,366 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:18,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:18,366 INFO L85 PathProgramCache]: Analyzing trace with hash 293058830, now seen corresponding path program 1 times [2024-11-19 09:19:18,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:18,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869751024] [2024-11-19 09:19:18,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:18,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:18,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:18,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869751024] [2024-11-19 09:19:18,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869751024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:18,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:18,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:18,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708533538] [2024-11-19 09:19:18,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:18,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:18,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:18,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:18,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:18,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-19 09:19:18,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:18,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:18,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-19 09:19:18,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:19,109 INFO L124 PetriNetUnfolderBase]: 1392/3004 cut-off events. [2024-11-19 09:19:19,109 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-19 09:19:19,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5400 conditions, 3004 events. 1392/3004 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16841 event pairs, 1074 based on Foata normal form. 24/2730 useless extension candidates. Maximal degree in co-relation 5395. Up to 2187 conditions per place. [2024-11-19 09:19:19,119 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 66 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2024-11-19 09:19:19,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 109 transitions, 379 flow [2024-11-19 09:19:19,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:19,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2024-11-19 09:19:19,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-19 09:19:19,121 INFO L175 Difference]: Start difference. First operand has 105 places, 103 transitions, 228 flow. Second operand 4 states and 466 transitions. [2024-11-19 09:19:19,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 109 transitions, 379 flow [2024-11-19 09:19:19,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 109 transitions, 373 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:19,123 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 224 flow [2024-11-19 09:19:19,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2024-11-19 09:19:19,124 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -59 predicate places. [2024-11-19 09:19:19,124 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 224 flow [2024-11-19 09:19:19,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:19,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:19,125 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:19,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 09:19:19,125 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:19,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:19,125 INFO L85 PathProgramCache]: Analyzing trace with hash 494858813, now seen corresponding path program 1 times [2024-11-19 09:19:19,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:19,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581023775] [2024-11-19 09:19:19,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:19,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:19,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:19,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581023775] [2024-11-19 09:19:19,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581023775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:19,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:19,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:19:19,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561835291] [2024-11-19 09:19:19,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:19,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:19,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:19,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:19,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:19,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-19 09:19:19,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 224 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) [2024-11-19 09:19:19,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:19,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-19 09:19:19,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:19,463 INFO L124 PetriNetUnfolderBase]: 1380/2992 cut-off events. [2024-11-19 09:19:19,467 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-19 09:19:19,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5376 conditions, 2992 events. 1380/2992 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16810 event pairs, 1074 based on Foata normal form. 0/2706 useless extension candidates. Maximal degree in co-relation 5371. Up to 2176 conditions per place. [2024-11-19 09:19:19,485 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 66 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2024-11-19 09:19:19,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 108 transitions, 375 flow [2024-11-19 09:19:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:19,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2024-11-19 09:19:19,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7189922480620154 [2024-11-19 09:19:19,490 INFO L175 Difference]: Start difference. First operand has 103 places, 101 transitions, 224 flow. Second operand 3 states and 371 transitions. [2024-11-19 09:19:19,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 108 transitions, 375 flow [2024-11-19 09:19:19,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 369 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:19,493 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 220 flow [2024-11-19 09:19:19,494 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2024-11-19 09:19:19,495 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -60 predicate places. [2024-11-19 09:19:19,495 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 220 flow [2024-11-19 09:19:19,496 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) [2024-11-19 09:19:19,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:19,496 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] [2024-11-19 09:19:19,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:19:19,499 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:19,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:19,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1861204073, now seen corresponding path program 1 times [2024-11-19 09:19:19,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:19,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063071594] [2024-11-19 09:19:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:19,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:20,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:20,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063071594] [2024-11-19 09:19:20,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063071594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:20,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:20,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:19:20,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362368176] [2024-11-19 09:19:20,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:20,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:19:20,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:20,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:19:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:19:21,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-19 09:19:21,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 220 flow. Second operand has 11 states, 11 states have (on average 94.0909090909091) internal successors, (1035), 11 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:21,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:21,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-19 09:19:21,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:21,986 INFO L124 PetriNetUnfolderBase]: 1717/3481 cut-off events. [2024-11-19 09:19:21,986 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-19 09:19:21,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6486 conditions, 3481 events. 1717/3481 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 19053 event pairs, 388 based on Foata normal form. 0/3243 useless extension candidates. Maximal degree in co-relation 6481. Up to 2364 conditions per place. [2024-11-19 09:19:22,000 INFO L140 encePairwiseOnDemand]: 158/172 looper letters, 116 selfloop transitions, 13 changer transitions 0/160 dead transitions. [2024-11-19 09:19:22,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 160 transitions, 608 flow [2024-11-19 09:19:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:19:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:19:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1049 transitions. [2024-11-19 09:19:22,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6098837209302326 [2024-11-19 09:19:22,003 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 220 flow. Second operand 10 states and 1049 transitions. [2024-11-19 09:19:22,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 160 transitions, 608 flow [2024-11-19 09:19:22,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 160 transitions, 604 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:22,006 INFO L231 Difference]: Finished difference. Result has 109 places, 101 transitions, 254 flow [2024-11-19 09:19:22,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=254, PETRI_PLACES=109, PETRI_TRANSITIONS=101} [2024-11-19 09:19:22,006 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -53 predicate places. [2024-11-19 09:19:22,006 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 101 transitions, 254 flow [2024-11-19 09:19:22,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 94.0909090909091) internal successors, (1035), 11 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:22,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:22,007 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] [2024-11-19 09:19:22,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 09:19:22,008 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:22,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash 750049702, now seen corresponding path program 1 times [2024-11-19 09:19:22,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:22,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163532128] [2024-11-19 09:19:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:22,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:24,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:24,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163532128] [2024-11-19 09:19:24,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163532128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:24,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:24,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 09:19:24,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241004458] [2024-11-19 09:19:24,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:24,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 09:19:24,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:24,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 09:19:24,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-19 09:19:25,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 172 [2024-11-19 09:19:25,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 101 transitions, 254 flow. Second operand has 15 states, 15 states have (on average 92.66666666666667) internal successors, (1390), 15 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:25,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:25,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 172 [2024-11-19 09:19:25,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:25,969 INFO L124 PetriNetUnfolderBase]: 1711/3420 cut-off events. [2024-11-19 09:19:25,969 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2024-11-19 09:19:25,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6720 conditions, 3420 events. 1711/3420 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 18717 event pairs, 438 based on Foata normal form. 0/3216 useless extension candidates. Maximal degree in co-relation 6714. Up to 2065 conditions per place. [2024-11-19 09:19:25,981 INFO L140 encePairwiseOnDemand]: 157/172 looper letters, 129 selfloop transitions, 14 changer transitions 0/170 dead transitions. [2024-11-19 09:19:25,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 170 transitions, 688 flow [2024-11-19 09:19:25,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 09:19:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 09:19:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1323 transitions. [2024-11-19 09:19:25,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5916815742397138 [2024-11-19 09:19:25,984 INFO L175 Difference]: Start difference. First operand has 109 places, 101 transitions, 254 flow. Second operand 13 states and 1323 transitions. [2024-11-19 09:19:25,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 170 transitions, 688 flow [2024-11-19 09:19:25,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 170 transitions, 666 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-19 09:19:25,987 INFO L231 Difference]: Finished difference. Result has 110 places, 98 transitions, 260 flow [2024-11-19 09:19:25,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=260, PETRI_PLACES=110, PETRI_TRANSITIONS=98} [2024-11-19 09:19:25,988 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -52 predicate places. [2024-11-19 09:19:25,988 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 98 transitions, 260 flow [2024-11-19 09:19:25,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.66666666666667) internal successors, (1390), 15 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:25,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:25,989 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:25,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 09:19:25,989 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:25,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:25,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1845955818, now seen corresponding path program 1 times [2024-11-19 09:19:25,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:25,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409571448] [2024-11-19 09:19:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:25,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:27,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:27,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409571448] [2024-11-19 09:19:27,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409571448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:27,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:27,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:19:27,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737568996] [2024-11-19 09:19:27,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:27,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 09:19:27,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 09:19:27,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-19 09:19:28,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 172 [2024-11-19 09:19:28,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 98 transitions, 260 flow. Second operand has 12 states, 12 states have (on average 76.41666666666667) internal successors, (917), 12 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:28,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:28,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 172 [2024-11-19 09:19:28,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:29,276 INFO L124 PetriNetUnfolderBase]: 2375/4664 cut-off events. [2024-11-19 09:19:29,276 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-11-19 09:19:29,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9286 conditions, 4664 events. 2375/4664 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 27647 event pairs, 226 based on Foata normal form. 56/4467 useless extension candidates. Maximal degree in co-relation 9279. Up to 2173 conditions per place. [2024-11-19 09:19:29,292 INFO L140 encePairwiseOnDemand]: 157/172 looper letters, 154 selfloop transitions, 19 changer transitions 0/201 dead transitions. [2024-11-19 09:19:29,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 201 transitions, 851 flow [2024-11-19 09:19:29,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:19:29,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:19:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 982 transitions. [2024-11-19 09:19:29,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5190274841437632 [2024-11-19 09:19:29,295 INFO L175 Difference]: Start difference. First operand has 110 places, 98 transitions, 260 flow. Second operand 11 states and 982 transitions. [2024-11-19 09:19:29,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 201 transitions, 851 flow [2024-11-19 09:19:29,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 201 transitions, 827 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-19 09:19:29,300 INFO L231 Difference]: Finished difference. Result has 113 places, 108 transitions, 346 flow [2024-11-19 09:19:29,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=346, PETRI_PLACES=113, PETRI_TRANSITIONS=108} [2024-11-19 09:19:29,301 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -49 predicate places. [2024-11-19 09:19:29,301 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 108 transitions, 346 flow [2024-11-19 09:19:29,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 76.41666666666667) internal successors, (917), 12 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:29,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:29,301 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] [2024-11-19 09:19:29,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 09:19:29,302 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)] === [2024-11-19 09:19:29,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:29,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1672722119, now seen corresponding path program 1 times [2024-11-19 09:19:29,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:29,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626718421] [2024-11-19 09:19:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:29,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:29,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:29,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626718421] [2024-11-19 09:19:29,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626718421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:29,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:29,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:19:29,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129718521] [2024-11-19 09:19:29,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:29,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:29,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:29,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:29,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:29,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-19 09:19:29,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 108 transitions, 346 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) [2024-11-19 09:19:29,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:29,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-19 09:19:29,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:29,990 INFO L124 PetriNetUnfolderBase]: 3330/7329 cut-off events. [2024-11-19 09:19:29,990 INFO L125 PetriNetUnfolderBase]: For 1674/1740 co-relation queries the response was YES. [2024-11-19 09:19:30,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14796 conditions, 7329 events. 3330/7329 cut-off events. For 1674/1740 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 54318 event pairs, 1490 based on Foata normal form. 183/6957 useless extension candidates. Maximal degree in co-relation 14785. Up to 3220 conditions per place. [2024-11-19 09:19:30,034 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 127 selfloop transitions, 2 changer transitions 0/167 dead transitions. [2024-11-19 09:19:30,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 167 transitions, 823 flow [2024-11-19 09:19:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2024-11-19 09:19:30,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7887596899224806 [2024-11-19 09:19:30,036 INFO L175 Difference]: Start difference. First operand has 113 places, 108 transitions, 346 flow. Second operand 3 states and 407 transitions. [2024-11-19 09:19:30,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 167 transitions, 823 flow [2024-11-19 09:19:30,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 167 transitions, 788 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-19 09:19:30,044 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 338 flow [2024-11-19 09:19:30,045 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2024-11-19 09:19:30,046 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -51 predicate places. [2024-11-19 09:19:30,046 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 338 flow [2024-11-19 09:19:30,046 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) [2024-11-19 09:19:30,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:30,046 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:30,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 09:19:30,046 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:30,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:30,047 INFO L85 PathProgramCache]: Analyzing trace with hash -156280063, now seen corresponding path program 1 times [2024-11-19 09:19:30,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:30,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834846695] [2024-11-19 09:19:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:30,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:30,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834846695] [2024-11-19 09:19:30,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834846695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:30,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:30,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:30,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130630456] [2024-11-19 09:19:30,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:30,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:30,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:30,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:30,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:30,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-19 09:19:30,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:30,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:30,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-19 09:19:30,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:30,928 INFO L124 PetriNetUnfolderBase]: 4187/8368 cut-off events. [2024-11-19 09:19:30,928 INFO L125 PetriNetUnfolderBase]: For 2332/2370 co-relation queries the response was YES. [2024-11-19 09:19:30,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18423 conditions, 8368 events. 4187/8368 cut-off events. For 2332/2370 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 59028 event pairs, 2277 based on Foata normal form. 92/7986 useless extension candidates. Maximal degree in co-relation 18410. Up to 5629 conditions per place. [2024-11-19 09:19:30,968 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 104 selfloop transitions, 3 changer transitions 0/144 dead transitions. [2024-11-19 09:19:30,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 144 transitions, 667 flow [2024-11-19 09:19:30,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:30,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 488 transitions. [2024-11-19 09:19:30,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7093023255813954 [2024-11-19 09:19:30,970 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 338 flow. Second operand 4 states and 488 transitions. [2024-11-19 09:19:30,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 144 transitions, 667 flow [2024-11-19 09:19:30,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 144 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:30,976 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 352 flow [2024-11-19 09:19:30,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2024-11-19 09:19:30,977 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -48 predicate places. [2024-11-19 09:19:30,977 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 352 flow [2024-11-19 09:19:30,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:30,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:30,978 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:30,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 09:19:30,978 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:30,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:30,978 INFO L85 PathProgramCache]: Analyzing trace with hash -811902022, now seen corresponding path program 1 times [2024-11-19 09:19:30,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:30,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388897512] [2024-11-19 09:19:30,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:30,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:31,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:31,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:31,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388897512] [2024-11-19 09:19:31,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388897512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:31,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:31,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:19:31,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656117339] [2024-11-19 09:19:31,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:31,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:31,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:31,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:31,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:31,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-19 09:19:31,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 352 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) [2024-11-19 09:19:31,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:31,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-19 09:19:31,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:31,465 INFO L124 PetriNetUnfolderBase]: 2481/5241 cut-off events. [2024-11-19 09:19:31,466 INFO L125 PetriNetUnfolderBase]: For 1240/1240 co-relation queries the response was YES. [2024-11-19 09:19:31,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11257 conditions, 5241 events. 2481/5241 cut-off events. For 1240/1240 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 33847 event pairs, 1218 based on Foata normal form. 124/5112 useless extension candidates. Maximal degree in co-relation 11243. Up to 2282 conditions per place. [2024-11-19 09:19:31,488 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 80 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2024-11-19 09:19:31,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 119 transitions, 523 flow [2024-11-19 09:19:31,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:31,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:31,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2024-11-19 09:19:31,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7248062015503876 [2024-11-19 09:19:31,490 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 352 flow. Second operand 3 states and 374 transitions. [2024-11-19 09:19:31,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 119 transitions, 523 flow [2024-11-19 09:19:31,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 119 transitions, 501 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-19 09:19:31,494 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 304 flow [2024-11-19 09:19:31,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=111, PETRI_TRANSITIONS=103} [2024-11-19 09:19:31,495 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -51 predicate places. [2024-11-19 09:19:31,495 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 304 flow [2024-11-19 09:19:31,495 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) [2024-11-19 09:19:31,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:31,496 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] [2024-11-19 09:19:31,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 09:19:31,496 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:31,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:31,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1619008948, now seen corresponding path program 1 times [2024-11-19 09:19:31,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:31,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498363974] [2024-11-19 09:19:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:31,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:31,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:31,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498363974] [2024-11-19 09:19:31,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498363974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:31,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:31,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:19:31,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134862576] [2024-11-19 09:19:31,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:31,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:31,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:31,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:31,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:31,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-19 09:19:31,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 103 transitions, 304 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) [2024-11-19 09:19:31,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:31,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-19 09:19:31,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:31,937 INFO L124 PetriNetUnfolderBase]: 1512/3599 cut-off events. [2024-11-19 09:19:31,938 INFO L125 PetriNetUnfolderBase]: For 1078/1078 co-relation queries the response was YES. [2024-11-19 09:19:31,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7823 conditions, 3599 events. 1512/3599 cut-off events. For 1078/1078 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 21547 event pairs, 368 based on Foata normal form. 218/3648 useless extension candidates. Maximal degree in co-relation 7810. Up to 1849 conditions per place. [2024-11-19 09:19:31,951 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 72 selfloop transitions, 6 changer transitions 0/116 dead transitions. [2024-11-19 09:19:31,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 116 transitions, 504 flow [2024-11-19 09:19:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:31,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2024-11-19 09:19:31,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7248062015503876 [2024-11-19 09:19:31,953 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 304 flow. Second operand 3 states and 374 transitions. [2024-11-19 09:19:31,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 116 transitions, 504 flow [2024-11-19 09:19:31,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 116 transitions, 498 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:31,956 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 310 flow [2024-11-19 09:19:31,957 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=111, PETRI_TRANSITIONS=103} [2024-11-19 09:19:31,957 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -51 predicate places. [2024-11-19 09:19:31,957 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 310 flow [2024-11-19 09:19:31,957 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) [2024-11-19 09:19:31,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:31,958 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] [2024-11-19 09:19:31,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 09:19:31,958 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:31,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:31,958 INFO L85 PathProgramCache]: Analyzing trace with hash 296432080, now seen corresponding path program 1 times [2024-11-19 09:19:31,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:31,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918191382] [2024-11-19 09:19:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:31,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:32,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:32,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918191382] [2024-11-19 09:19:32,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918191382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:32,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:32,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:32,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887829947] [2024-11-19 09:19:32,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:32,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:32,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:32,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:32,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:32,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 172 [2024-11-19 09:19:32,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 103 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:32,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:32,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 172 [2024-11-19 09:19:32,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:32,676 INFO L124 PetriNetUnfolderBase]: 1512/3346 cut-off events. [2024-11-19 09:19:32,677 INFO L125 PetriNetUnfolderBase]: For 1231/1231 co-relation queries the response was YES. [2024-11-19 09:19:32,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7867 conditions, 3346 events. 1512/3346 cut-off events. For 1231/1231 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 18748 event pairs, 1021 based on Foata normal form. 126/3380 useless extension candidates. Maximal degree in co-relation 7854. Up to 2207 conditions per place. [2024-11-19 09:19:32,690 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 67 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-11-19 09:19:32,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 453 flow [2024-11-19 09:19:32,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2024-11-19 09:19:32,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2024-11-19 09:19:32,692 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 310 flow. Second operand 4 states and 444 transitions. [2024-11-19 09:19:32,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 453 flow [2024-11-19 09:19:32,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 101 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:32,697 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 296 flow [2024-11-19 09:19:32,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=106, PETRI_TRANSITIONS=96} [2024-11-19 09:19:32,697 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -56 predicate places. [2024-11-19 09:19:32,697 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 296 flow [2024-11-19 09:19:32,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:32,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:32,698 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] [2024-11-19 09:19:32,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 09:19:32,698 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:32,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:32,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1884135743, now seen corresponding path program 1 times [2024-11-19 09:19:32,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:32,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320308828] [2024-11-19 09:19:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:32,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:32,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:19:32,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:32,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320308828] [2024-11-19 09:19:32,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320308828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:19:32,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151744862] [2024-11-19 09:19:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:32,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:19:32,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:19:32,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:19:32,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:19:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:33,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 09:19:33,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:19:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:19:33,149 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:19:33,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151744862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:33,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:19:33,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-19 09:19:33,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485563975] [2024-11-19 09:19:33,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:33,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:33,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:33,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:33,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:19:33,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-19 09:19:33,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 96 transitions, 296 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) [2024-11-19 09:19:33,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:33,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-19 09:19:33,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:33,484 INFO L124 PetriNetUnfolderBase]: 1512/3349 cut-off events. [2024-11-19 09:19:33,485 INFO L125 PetriNetUnfolderBase]: For 1156/1156 co-relation queries the response was YES. [2024-11-19 09:19:33,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 3349 events. 1512/3349 cut-off events. For 1156/1156 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 18803 event pairs, 1201 based on Foata normal form. 5/3248 useless extension candidates. Maximal degree in co-relation 7740. Up to 2625 conditions per place. [2024-11-19 09:19:33,496 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 63 selfloop transitions, 1 changer transitions 2/95 dead transitions. [2024-11-19 09:19:33,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 95 transitions, 424 flow [2024-11-19 09:19:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2024-11-19 09:19:33,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6937984496124031 [2024-11-19 09:19:33,498 INFO L175 Difference]: Start difference. First operand has 106 places, 96 transitions, 296 flow. Second operand 3 states and 358 transitions. [2024-11-19 09:19:33,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 95 transitions, 424 flow [2024-11-19 09:19:33,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 95 transitions, 418 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:33,501 INFO L231 Difference]: Finished difference. Result has 104 places, 93 transitions, 285 flow [2024-11-19 09:19:33,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=104, PETRI_TRANSITIONS=93} [2024-11-19 09:19:33,502 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -58 predicate places. [2024-11-19 09:19:33,502 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 93 transitions, 285 flow [2024-11-19 09:19:33,502 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) [2024-11-19 09:19:33,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:33,502 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] [2024-11-19 09:19:33,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 09:19:33,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 09:19:33,707 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:33,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:33,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2089446213, now seen corresponding path program 1 times [2024-11-19 09:19:33,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:33,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099090973] [2024-11-19 09:19:33,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:33,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:36,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:36,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099090973] [2024-11-19 09:19:36,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099090973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:36,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:36,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-19 09:19:36,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561301674] [2024-11-19 09:19:36,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:36,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 09:19:36,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:36,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 09:19:36,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-19 09:19:38,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 172 [2024-11-19 09:19:38,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 93 transitions, 285 flow. Second operand has 20 states, 20 states have (on average 61.3) internal successors, (1226), 20 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:38,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:38,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 172 [2024-11-19 09:19:38,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:39,207 INFO L124 PetriNetUnfolderBase]: 1826/3747 cut-off events. [2024-11-19 09:19:39,207 INFO L125 PetriNetUnfolderBase]: For 1228/1228 co-relation queries the response was YES. [2024-11-19 09:19:39,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8842 conditions, 3747 events. 1826/3747 cut-off events. For 1228/1228 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 20050 event pairs, 248 based on Foata normal form. 0/3619 useless extension candidates. Maximal degree in co-relation 8828. Up to 1419 conditions per place. [2024-11-19 09:19:39,220 INFO L140 encePairwiseOnDemand]: 146/172 looper letters, 149 selfloop transitions, 25 changer transitions 10/200 dead transitions. [2024-11-19 09:19:39,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 200 transitions, 991 flow [2024-11-19 09:19:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 09:19:39,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 09:19:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1172 transitions. [2024-11-19 09:19:39,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4008207934336525 [2024-11-19 09:19:39,224 INFO L175 Difference]: Start difference. First operand has 104 places, 93 transitions, 285 flow. Second operand 17 states and 1172 transitions. [2024-11-19 09:19:39,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 200 transitions, 991 flow [2024-11-19 09:19:39,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 200 transitions, 990 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:39,229 INFO L231 Difference]: Finished difference. Result has 123 places, 102 transitions, 398 flow [2024-11-19 09:19:39,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=398, PETRI_PLACES=123, PETRI_TRANSITIONS=102} [2024-11-19 09:19:39,230 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -39 predicate places. [2024-11-19 09:19:39,230 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 102 transitions, 398 flow [2024-11-19 09:19:39,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 61.3) internal successors, (1226), 20 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:39,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:39,232 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:39,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 09:19:39,232 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:39,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash 92429497, now seen corresponding path program 1 times [2024-11-19 09:19:39,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:39,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590212965] [2024-11-19 09:19:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:39,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:41,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:41,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590212965] [2024-11-19 09:19:41,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590212965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:41,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:41,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 09:19:41,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251885713] [2024-11-19 09:19:41,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:41,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 09:19:41,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:41,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 09:19:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-19 09:19:43,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 172 [2024-11-19 09:19:43,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 102 transitions, 398 flow. Second operand has 18 states, 18 states have (on average 63.44444444444444) internal successors, (1142), 18 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:43,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:43,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 172 [2024-11-19 09:19:43,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:43,975 INFO L124 PetriNetUnfolderBase]: 1914/3970 cut-off events. [2024-11-19 09:19:43,976 INFO L125 PetriNetUnfolderBase]: For 1663/1663 co-relation queries the response was YES. [2024-11-19 09:19:43,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9965 conditions, 3970 events. 1914/3970 cut-off events. For 1663/1663 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 20969 event pairs, 226 based on Foata normal form. 0/3862 useless extension candidates. Maximal degree in co-relation 9945. Up to 975 conditions per place. [2024-11-19 09:19:43,993 INFO L140 encePairwiseOnDemand]: 150/172 looper letters, 171 selfloop transitions, 27 changer transitions 10/227 dead transitions. [2024-11-19 09:19:43,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 227 transitions, 1225 flow [2024-11-19 09:19:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 09:19:43,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-19 09:19:43,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1288 transitions. [2024-11-19 09:19:43,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4160206718346253 [2024-11-19 09:19:43,996 INFO L175 Difference]: Start difference. First operand has 123 places, 102 transitions, 398 flow. Second operand 18 states and 1288 transitions. [2024-11-19 09:19:43,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 227 transitions, 1225 flow [2024-11-19 09:19:44,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 227 transitions, 1203 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-19 09:19:44,003 INFO L231 Difference]: Finished difference. Result has 135 places, 108 transitions, 482 flow [2024-11-19 09:19:44,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=482, PETRI_PLACES=135, PETRI_TRANSITIONS=108} [2024-11-19 09:19:44,004 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -27 predicate places. [2024-11-19 09:19:44,004 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 108 transitions, 482 flow [2024-11-19 09:19:44,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.44444444444444) internal successors, (1142), 18 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:44,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:44,005 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:44,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 09:19:44,005 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:44,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:44,005 INFO L85 PathProgramCache]: Analyzing trace with hash 427777124, now seen corresponding path program 1 times [2024-11-19 09:19:44,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:44,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989062908] [2024-11-19 09:19:44,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:44,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:44,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:44,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989062908] [2024-11-19 09:19:44,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989062908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:44,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:44,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:44,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484311211] [2024-11-19 09:19:44,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:44,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:44,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:44,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:44,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:44,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-19 09:19:44,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 108 transitions, 482 flow. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:44,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:44,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-19 09:19:44,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:44,732 INFO L124 PetriNetUnfolderBase]: 1761/3848 cut-off events. [2024-11-19 09:19:44,732 INFO L125 PetriNetUnfolderBase]: For 2307/2316 co-relation queries the response was YES. [2024-11-19 09:19:44,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9765 conditions, 3848 events. 1761/3848 cut-off events. For 2307/2316 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 21555 event pairs, 845 based on Foata normal form. 15/3770 useless extension candidates. Maximal degree in co-relation 9741. Up to 2068 conditions per place. [2024-11-19 09:19:44,752 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 126 selfloop transitions, 3 changer transitions 0/165 dead transitions. [2024-11-19 09:19:44,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 165 transitions, 1007 flow [2024-11-19 09:19:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:44,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2024-11-19 09:19:44,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7267441860465116 [2024-11-19 09:19:44,753 INFO L175 Difference]: Start difference. First operand has 135 places, 108 transitions, 482 flow. Second operand 4 states and 500 transitions. [2024-11-19 09:19:44,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 165 transitions, 1007 flow [2024-11-19 09:19:44,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 165 transitions, 910 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-11-19 09:19:44,760 INFO L231 Difference]: Finished difference. Result has 125 places, 108 transitions, 431 flow [2024-11-19 09:19:44,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=121, 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=431, PETRI_PLACES=125, PETRI_TRANSITIONS=108} [2024-11-19 09:19:44,761 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -37 predicate places. [2024-11-19 09:19:44,761 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 108 transitions, 431 flow [2024-11-19 09:19:44,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:44,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:44,762 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] [2024-11-19 09:19:44,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 09:19:44,762 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:44,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:44,762 INFO L85 PathProgramCache]: Analyzing trace with hash -266577620, now seen corresponding path program 1 times [2024-11-19 09:19:44,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:44,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833036631] [2024-11-19 09:19:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:44,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:46,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:46,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833036631] [2024-11-19 09:19:46,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833036631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:46,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:46,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 09:19:46,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400474684] [2024-11-19 09:19:46,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:46,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:19:46,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:46,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:19:46,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:19:46,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 172 [2024-11-19 09:19:46,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 108 transitions, 431 flow. Second operand has 13 states, 13 states have (on average 94.84615384615384) internal successors, (1233), 13 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:46,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:46,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 172 [2024-11-19 09:19:46,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:47,563 INFO L124 PetriNetUnfolderBase]: 1496/3149 cut-off events. [2024-11-19 09:19:47,564 INFO L125 PetriNetUnfolderBase]: For 2014/2016 co-relation queries the response was YES. [2024-11-19 09:19:47,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 3149 events. 1496/3149 cut-off events. For 2014/2016 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 15368 event pairs, 351 based on Foata normal form. 14/3096 useless extension candidates. Maximal degree in co-relation 8083. Up to 1515 conditions per place. [2024-11-19 09:19:47,578 INFO L140 encePairwiseOnDemand]: 155/172 looper letters, 125 selfloop transitions, 16 changer transitions 14/175 dead transitions. [2024-11-19 09:19:47,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 175 transitions, 983 flow [2024-11-19 09:19:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:19:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:19:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1230 transitions. [2024-11-19 09:19:47,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5959302325581395 [2024-11-19 09:19:47,580 INFO L175 Difference]: Start difference. First operand has 125 places, 108 transitions, 431 flow. Second operand 12 states and 1230 transitions. [2024-11-19 09:19:47,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 175 transitions, 983 flow [2024-11-19 09:19:47,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 175 transitions, 917 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-11-19 09:19:47,586 INFO L231 Difference]: Finished difference. Result has 125 places, 99 transitions, 375 flow [2024-11-19 09:19:47,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=375, PETRI_PLACES=125, PETRI_TRANSITIONS=99} [2024-11-19 09:19:47,587 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -37 predicate places. [2024-11-19 09:19:47,587 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 99 transitions, 375 flow [2024-11-19 09:19:47,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 94.84615384615384) internal successors, (1233), 13 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:47,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:47,588 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] [2024-11-19 09:19:47,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 09:19:47,588 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:47,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:47,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1492614836, now seen corresponding path program 1 times [2024-11-19 09:19:47,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:47,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677644336] [2024-11-19 09:19:47,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:47,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:50,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:50,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677644336] [2024-11-19 09:19:50,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677644336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:50,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:50,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-19 09:19:50,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336372110] [2024-11-19 09:19:50,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:50,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 09:19:50,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:50,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 09:19:50,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-19 09:19:52,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 172 [2024-11-19 09:19:52,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 99 transitions, 375 flow. Second operand has 20 states, 20 states have (on average 92.6) internal successors, (1852), 20 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:52,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:52,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 172 [2024-11-19 09:19:52,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:53,564 INFO L124 PetriNetUnfolderBase]: 1484/3128 cut-off events. [2024-11-19 09:19:53,565 INFO L125 PetriNetUnfolderBase]: For 1469/1469 co-relation queries the response was YES. [2024-11-19 09:19:53,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7927 conditions, 3128 events. 1484/3128 cut-off events. For 1469/1469 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 14988 event pairs, 211 based on Foata normal form. 0/3089 useless extension candidates. Maximal degree in co-relation 7906. Up to 906 conditions per place. [2024-11-19 09:19:53,580 INFO L140 encePairwiseOnDemand]: 149/172 looper letters, 152 selfloop transitions, 22 changer transitions 16/209 dead transitions. [2024-11-19 09:19:53,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 209 transitions, 1131 flow [2024-11-19 09:19:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 09:19:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 09:19:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1703 transitions. [2024-11-19 09:19:53,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.582421340629275 [2024-11-19 09:19:53,584 INFO L175 Difference]: Start difference. First operand has 125 places, 99 transitions, 375 flow. Second operand 17 states and 1703 transitions. [2024-11-19 09:19:53,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 209 transitions, 1131 flow [2024-11-19 09:19:53,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 209 transitions, 1097 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-19 09:19:53,591 INFO L231 Difference]: Finished difference. Result has 132 places, 100 transitions, 397 flow [2024-11-19 09:19:53,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=397, PETRI_PLACES=132, PETRI_TRANSITIONS=100} [2024-11-19 09:19:53,591 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -30 predicate places. [2024-11-19 09:19:53,591 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 100 transitions, 397 flow [2024-11-19 09:19:53,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 92.6) internal successors, (1852), 20 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:53,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:53,592 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:53,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-19 09:19:53,593 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:53,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:53,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1664376581, now seen corresponding path program 1 times [2024-11-19 09:19:53,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:53,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374884397] [2024-11-19 09:19:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:53,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:58,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:58,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:58,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374884397] [2024-11-19 09:19:58,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374884397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:58,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:58,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-19 09:19:58,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20429231] [2024-11-19 09:19:58,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:58,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 09:19:58,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:58,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 09:19:58,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2024-11-19 09:20:04,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 172 [2024-11-19 09:20:04,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 100 transitions, 397 flow. Second operand has 27 states, 27 states have (on average 73.92592592592592) internal successors, (1996), 27 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:04,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:04,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 172 [2024-11-19 09:20:04,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:06,589 INFO L124 PetriNetUnfolderBase]: 1764/3763 cut-off events. [2024-11-19 09:20:06,589 INFO L125 PetriNetUnfolderBase]: For 2072/2074 co-relation queries the response was YES. [2024-11-19 09:20:06,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9756 conditions, 3763 events. 1764/3763 cut-off events. For 2072/2074 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 19835 event pairs, 393 based on Foata normal form. 0/3712 useless extension candidates. Maximal degree in co-relation 9733. Up to 2440 conditions per place. [2024-11-19 09:20:06,605 INFO L140 encePairwiseOnDemand]: 145/172 looper letters, 157 selfloop transitions, 49 changer transitions 20/247 dead transitions. [2024-11-19 09:20:06,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 247 transitions, 1404 flow [2024-11-19 09:20:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 09:20:06,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 09:20:06,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2226 transitions. [2024-11-19 09:20:06,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4622093023255814 [2024-11-19 09:20:06,608 INFO L175 Difference]: Start difference. First operand has 132 places, 100 transitions, 397 flow. Second operand 28 states and 2226 transitions. [2024-11-19 09:20:06,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 247 transitions, 1404 flow [2024-11-19 09:20:06,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 247 transitions, 1324 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-11-19 09:20:06,615 INFO L231 Difference]: Finished difference. Result has 163 places, 145 transitions, 783 flow [2024-11-19 09:20:06,615 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=783, PETRI_PLACES=163, PETRI_TRANSITIONS=145} [2024-11-19 09:20:06,616 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 1 predicate places. [2024-11-19 09:20:06,616 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 145 transitions, 783 flow [2024-11-19 09:20:06,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 73.92592592592592) internal successors, (1996), 27 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:06,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:06,617 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:06,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-19 09:20:06,617 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:20:06,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1022925631, now seen corresponding path program 2 times [2024-11-19 09:20:06,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:06,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776959277] [2024-11-19 09:20:06,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:20:06,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:06,747 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:20:06,747 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:11,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:11,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776959277] [2024-11-19 09:20:11,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776959277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:11,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:11,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-19 09:20:11,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422423565] [2024-11-19 09:20:11,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:11,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 09:20:11,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:11,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 09:20:11,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2024-11-19 09:20:14,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 172 [2024-11-19 09:20:14,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 145 transitions, 783 flow. Second operand has 26 states, 26 states have (on average 92.03846153846153) internal successors, (2393), 26 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:14,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:14,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 172 [2024-11-19 09:20:14,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:16,520 INFO L124 PetriNetUnfolderBase]: 2003/4290 cut-off events. [2024-11-19 09:20:16,520 INFO L125 PetriNetUnfolderBase]: For 5955/5955 co-relation queries the response was YES. [2024-11-19 09:20:16,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12595 conditions, 4290 events. 2003/4290 cut-off events. For 5955/5955 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 23700 event pairs, 442 based on Foata normal form. 0/4237 useless extension candidates. Maximal degree in co-relation 12554. Up to 2761 conditions per place. [2024-11-19 09:20:16,545 INFO L140 encePairwiseOnDemand]: 143/172 looper letters, 192 selfloop transitions, 48 changer transitions 22/282 dead transitions. [2024-11-19 09:20:16,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 282 transitions, 1939 flow [2024-11-19 09:20:16,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 09:20:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-19 09:20:16,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2811 transitions. [2024-11-19 09:20:16,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5635525260625501 [2024-11-19 09:20:16,548 INFO L175 Difference]: Start difference. First operand has 163 places, 145 transitions, 783 flow. Second operand 29 states and 2811 transitions. [2024-11-19 09:20:16,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 282 transitions, 1939 flow [2024-11-19 09:20:16,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 282 transitions, 1933 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 09:20:16,563 INFO L231 Difference]: Finished difference. Result has 205 places, 179 transitions, 1238 flow [2024-11-19 09:20:16,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1238, PETRI_PLACES=205, PETRI_TRANSITIONS=179} [2024-11-19 09:20:16,563 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 43 predicate places. [2024-11-19 09:20:16,563 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 179 transitions, 1238 flow [2024-11-19 09:20:16,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 92.03846153846153) internal successors, (2393), 26 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:16,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:16,564 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:16,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-19 09:20:16,565 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:20:16,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:16,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2107769611, now seen corresponding path program 3 times [2024-11-19 09:20:16,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:16,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681079549] [2024-11-19 09:20:16,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:20:16,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:16,703 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:20:16,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:20,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:20,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681079549] [2024-11-19 09:20:20,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681079549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:20,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:20,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-19 09:20:20,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668122578] [2024-11-19 09:20:20,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:20,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 09:20:20,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:20,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 09:20:20,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650