./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:24:30,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:24:30,535 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:24:30,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:24:30,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:24:30,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:24:30,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:24:30,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:24:30,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:24:30,559 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:24:30,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:24:30,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:24:30,560 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:24:30,560 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:24:30,560 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:24:30,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:24:30,561 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:24:30,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:24:30,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:24:30,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:24:30,562 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:24:30,562 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:24:30,563 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:24:30,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:24:30,563 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:24:30,564 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:24:30,564 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:24:30,564 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:24:30,565 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:24:30,565 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:24:30,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:24:30,565 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:24:30,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:24:30,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:24:30,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:24:30,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:24:30,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:24:30,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:24:30,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:24:30,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:24:30,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:24:30,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:24:30,568 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2024-10-11 19:24:30,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:24:30,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:24:30,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:24:30,801 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:24:30,801 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:24:30,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-10-11 19:24:32,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:24:32,273 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:24:32,274 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-10-11 19:24:32,287 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f99233a64/cb3210583c914c57ae25b73588bcf8ae/FLAGddf46b601 [2024-10-11 19:24:32,644 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f99233a64/cb3210583c914c57ae25b73588bcf8ae [2024-10-11 19:24:32,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:24:32,647 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:24:32,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:24:32,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:24:32,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:24:32,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:24:32" (1/1) ... [2024-10-11 19:24:32,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0a21cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:32, skipping insertion in model container [2024-10-11 19:24:32,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:24:32" (1/1) ... [2024-10-11 19:24:32,703 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:24:33,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:24:33,097 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:24:33,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:24:33,254 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:24:33,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33 WrapperNode [2024-10-11 19:24:33,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:24:33,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:24:33,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:24:33,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:24:33,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33" (1/1) ... [2024-10-11 19:24:33,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33" (1/1) ... [2024-10-11 19:24:33,307 INFO L138 Inliner]: procedures = 274, calls = 64, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 254 [2024-10-11 19:24:33,307 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:24:33,310 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:24:33,310 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:24:33,310 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:24:33,318 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33" (1/1) ... [2024-10-11 19:24:33,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33" (1/1) ... [2024-10-11 19:24:33,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33" (1/1) ... [2024-10-11 19:24:33,352 INFO L175 MemorySlicer]: Split 51 memory accesses to 5 slices as follows [2, 8, 5, 4, 32]. 63 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 8, 5, 0, 0]. The 18 writes are split as follows [0, 0, 0, 3, 15]. [2024-10-11 19:24:33,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33" (1/1) ... [2024-10-11 19:24:33,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33" (1/1) ... [2024-10-11 19:24:33,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33" (1/1) ... [2024-10-11 19:24:33,370 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33" (1/1) ... [2024-10-11 19:24:33,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33" (1/1) ... [2024-10-11 19:24:33,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33" (1/1) ... [2024-10-11 19:24:33,375 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:24:33,376 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:24:33,376 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:24:33,376 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:24:33,377 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33" (1/1) ... [2024-10-11 19:24:33,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:24:33,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:24:33,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:24:33,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:24:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-11 19:24:33,463 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-11 19:24:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-11 19:24:33,464 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-11 19:24:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 19:24:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 19:24:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 19:24:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 19:24:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 19:24:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-11 19:24:33,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 19:24:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 19:24:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 19:24:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 19:24:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-11 19:24:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 19:24:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:24:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:24:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 19:24:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 19:24:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 19:24:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 19:24:33,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:24:33,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:24:33,471 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:24:33,657 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:24:33,658 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:24:34,162 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:24:34,162 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:24:34,356 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:24:34,357 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 19:24:34,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:24:34 BoogieIcfgContainer [2024-10-11 19:24:34,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:24:34,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:24:34,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:24:34,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:24:34,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:24:32" (1/3) ... [2024-10-11 19:24:34,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251e9a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:24:34, skipping insertion in model container [2024-10-11 19:24:34,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:24:33" (2/3) ... [2024-10-11 19:24:34,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251e9a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:24:34, skipping insertion in model container [2024-10-11 19:24:34,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:24:34" (3/3) ... [2024-10-11 19:24:34,365 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-10-11 19:24:34,378 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:24:34,379 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2024-10-11 19:24:34,379 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:24:34,508 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 19:24:34,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 358 flow [2024-10-11 19:24:34,594 INFO L124 PetriNetUnfolderBase]: 14/170 cut-off events. [2024-10-11 19:24:34,595 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:24:34,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 14/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 528 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2024-10-11 19:24:34,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 172 transitions, 358 flow [2024-10-11 19:24:34,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 169 transitions, 350 flow [2024-10-11 19:24:34,617 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:24:34,621 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;@13b3c2e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:24:34,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 134 error locations. [2024-10-11 19:24:34,624 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:24:34,624 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-10-11 19:24:34,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:24:34,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:34,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-11 19:24:34,625 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)] === [2024-10-11 19:24:34,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:34,629 INFO L85 PathProgramCache]: Analyzing trace with hash 22442, now seen corresponding path program 1 times [2024-10-11 19:24:34,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:34,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577270094] [2024-10-11 19:24:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:34,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:34,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:34,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577270094] [2024-10-11 19:24:34,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577270094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:34,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:34,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:24:34,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426933257] [2024-10-11 19:24:34,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:34,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:24:34,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:34,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:24:34,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:24:34,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-10-11 19:24:34,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 169 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:34,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:34,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-10-11 19:24:34,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:35,592 INFO L124 PetriNetUnfolderBase]: 1744/4652 cut-off events. [2024-10-11 19:24:35,592 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-11 19:24:35,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7477 conditions, 4652 events. 1744/4652 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37088 event pairs, 1393 based on Foata normal form. 182/3586 useless extension candidates. Maximal degree in co-relation 7362. Up to 2744 conditions per place. [2024-10-11 19:24:35,620 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 57 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2024-10-11 19:24:35,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 153 transitions, 436 flow [2024-10-11 19:24:35,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:24:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:24:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2024-10-11 19:24:35,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7054263565891473 [2024-10-11 19:24:35,635 INFO L175 Difference]: Start difference. First operand has 162 places, 169 transitions, 350 flow. Second operand 3 states and 364 transitions. [2024-10-11 19:24:35,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 153 transitions, 436 flow [2024-10-11 19:24:35,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 153 transitions, 428 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:24:35,644 INFO L231 Difference]: Finished difference. Result has 150 places, 153 transitions, 314 flow [2024-10-11 19:24:35,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=150, PETRI_TRANSITIONS=153} [2024-10-11 19:24:35,649 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -12 predicate places. [2024-10-11 19:24:35,649 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 153 transitions, 314 flow [2024-10-11 19:24:35,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:35,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:35,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-11 19:24:35,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:24:35,650 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)] === [2024-10-11 19:24:35,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:35,651 INFO L85 PathProgramCache]: Analyzing trace with hash 22443, now seen corresponding path program 1 times [2024-10-11 19:24:35,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:35,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865339646] [2024-10-11 19:24:35,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:35,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:35,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:35,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865339646] [2024-10-11 19:24:35,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865339646] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:35,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:35,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:24:35,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501968758] [2024-10-11 19:24:35,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:35,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:24:35,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:35,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:24:35,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:24:35,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-10-11 19:24:35,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 153 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:35,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:35,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-10-11 19:24:35,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:36,168 INFO L124 PetriNetUnfolderBase]: 1744/4649 cut-off events. [2024-10-11 19:24:36,170 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-11 19:24:36,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7428 conditions, 4649 events. 1744/4649 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37018 event pairs, 1393 based on Foata normal form. 3/3406 useless extension candidates. Maximal degree in co-relation 7417. Up to 2744 conditions per place. [2024-10-11 19:24:36,187 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 57 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2024-10-11 19:24:36,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 150 transitions, 426 flow [2024-10-11 19:24:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:24:36,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:24:36,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2024-10-11 19:24:36,192 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6957364341085271 [2024-10-11 19:24:36,193 INFO L175 Difference]: Start difference. First operand has 150 places, 153 transitions, 314 flow. Second operand 3 states and 359 transitions. [2024-10-11 19:24:36,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 150 transitions, 426 flow [2024-10-11 19:24:36,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 150 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:24:36,196 INFO L231 Difference]: Finished difference. Result has 147 places, 150 transitions, 308 flow [2024-10-11 19:24:36,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=147, PETRI_TRANSITIONS=150} [2024-10-11 19:24:36,198 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -15 predicate places. [2024-10-11 19:24:36,198 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 150 transitions, 308 flow [2024-10-11 19:24:36,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:36,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:36,199 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 19:24:36,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:24:36,199 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)] === [2024-10-11 19:24:36,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:36,200 INFO L85 PathProgramCache]: Analyzing trace with hash 669253228, now seen corresponding path program 1 times [2024-10-11 19:24:36,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:36,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302890746] [2024-10-11 19:24:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:36,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:36,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:36,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302890746] [2024-10-11 19:24:36,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302890746] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:36,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:36,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:24:36,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472128477] [2024-10-11 19:24:36,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:36,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:24:36,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:36,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:24:36,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:24:36,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-10-11 19:24:36,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 150 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:36,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:36,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-10-11 19:24:36,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:36,695 INFO L124 PetriNetUnfolderBase]: 1744/4647 cut-off events. [2024-10-11 19:24:36,695 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-11 19:24:36,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7426 conditions, 4647 events. 1744/4647 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37009 event pairs, 1393 based on Foata normal form. 1/3404 useless extension candidates. Maximal degree in co-relation 7415. Up to 2743 conditions per place. [2024-10-11 19:24:36,717 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 56 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2024-10-11 19:24:36,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 148 transitions, 422 flow [2024-10-11 19:24:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:24:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:24:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2024-10-11 19:24:36,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6700581395348837 [2024-10-11 19:24:36,719 INFO L175 Difference]: Start difference. First operand has 147 places, 150 transitions, 308 flow. Second operand 4 states and 461 transitions. [2024-10-11 19:24:36,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 148 transitions, 422 flow [2024-10-11 19:24:36,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 148 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:24:36,724 INFO L231 Difference]: Finished difference. Result has 146 places, 148 transitions, 306 flow [2024-10-11 19:24:36,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=146, PETRI_TRANSITIONS=148} [2024-10-11 19:24:36,725 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -16 predicate places. [2024-10-11 19:24:36,725 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 148 transitions, 306 flow [2024-10-11 19:24:36,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:36,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:36,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 19:24:36,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:24:36,725 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)] === [2024-10-11 19:24:36,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:36,726 INFO L85 PathProgramCache]: Analyzing trace with hash 669253229, now seen corresponding path program 1 times [2024-10-11 19:24:36,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:36,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558890992] [2024-10-11 19:24:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:36,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:36,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:36,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558890992] [2024-10-11 19:24:36,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558890992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:36,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:36,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:24:36,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915775584] [2024-10-11 19:24:36,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:36,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:24:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:36,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:24:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:24:36,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-10-11 19:24:36,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 148 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:36,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:36,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-10-11 19:24:36,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:37,327 INFO L124 PetriNetUnfolderBase]: 1744/4645 cut-off events. [2024-10-11 19:24:37,327 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-11 19:24:37,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7425 conditions, 4645 events. 1744/4645 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37079 event pairs, 1393 based on Foata normal form. 2/3404 useless extension candidates. Maximal degree in co-relation 7410. Up to 2743 conditions per place. [2024-10-11 19:24:37,347 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 56 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2024-10-11 19:24:37,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 146 transitions, 420 flow [2024-10-11 19:24:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:24:37,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:24:37,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2024-10-11 19:24:37,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6700581395348837 [2024-10-11 19:24:37,349 INFO L175 Difference]: Start difference. First operand has 146 places, 148 transitions, 306 flow. Second operand 4 states and 461 transitions. [2024-10-11 19:24:37,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 146 transitions, 420 flow [2024-10-11 19:24:37,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 146 transitions, 414 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:24:37,351 INFO L231 Difference]: Finished difference. Result has 144 places, 146 transitions, 302 flow [2024-10-11 19:24:37,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=144, PETRI_TRANSITIONS=146} [2024-10-11 19:24:37,352 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -18 predicate places. [2024-10-11 19:24:37,352 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 146 transitions, 302 flow [2024-10-11 19:24:37,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:37,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:37,353 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:37,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:24:37,353 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:37,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:37,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1891288225, now seen corresponding path program 1 times [2024-10-11 19:24:37,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:37,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990606637] [2024-10-11 19:24:37,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:37,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:37,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:37,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990606637] [2024-10-11 19:24:37,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990606637] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:37,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:37,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:24:37,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095757646] [2024-10-11 19:24:37,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:37,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:24:37,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:37,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:24:37,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:24:37,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 172 [2024-10-11 19:24:37,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 146 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:37,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:37,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 172 [2024-10-11 19:24:37,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:37,811 INFO L124 PetriNetUnfolderBase]: 1703/4144 cut-off events. [2024-10-11 19:24:37,811 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-11 19:24:37,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6880 conditions, 4144 events. 1703/4144 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 30735 event pairs, 702 based on Foata normal form. 204/3608 useless extension candidates. Maximal degree in co-relation 6865. Up to 1413 conditions per place. [2024-10-11 19:24:37,824 INFO L140 encePairwiseOnDemand]: 151/172 looper letters, 73 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2024-10-11 19:24:37,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 149 transitions, 465 flow [2024-10-11 19:24:37,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:24:37,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:24:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 438 transitions. [2024-10-11 19:24:37,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6366279069767442 [2024-10-11 19:24:37,826 INFO L175 Difference]: Start difference. First operand has 144 places, 146 transitions, 302 flow. Second operand 4 states and 438 transitions. [2024-10-11 19:24:37,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 149 transitions, 465 flow [2024-10-11 19:24:37,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 149 transitions, 459 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:24:37,828 INFO L231 Difference]: Finished difference. Result has 128 places, 130 transitions, 274 flow [2024-10-11 19:24:37,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=128, PETRI_TRANSITIONS=130} [2024-10-11 19:24:37,828 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -34 predicate places. [2024-10-11 19:24:37,829 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 130 transitions, 274 flow [2024-10-11 19:24:37,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:37,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:37,829 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:37,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:24:37,829 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:37,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:37,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1891288224, now seen corresponding path program 1 times [2024-10-11 19:24:37,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:37,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959169090] [2024-10-11 19:24:37,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:37,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:37,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:37,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959169090] [2024-10-11 19:24:37,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959169090] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:37,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:37,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:24:37,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755102207] [2024-10-11 19:24:37,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:37,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:24:37,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:37,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:24:37,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:24:38,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 172 [2024-10-11 19:24:38,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 130 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:38,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:38,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 172 [2024-10-11 19:24:38,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:38,293 INFO L124 PetriNetUnfolderBase]: 1703/3675 cut-off events. [2024-10-11 19:24:38,294 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-10-11 19:24:38,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6545 conditions, 3675 events. 1703/3675 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 24543 event pairs, 702 based on Foata normal form. 204/3340 useless extension candidates. Maximal degree in co-relation 2518. Up to 1413 conditions per place. [2024-10-11 19:24:38,303 INFO L140 encePairwiseOnDemand]: 153/172 looper letters, 73 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2024-10-11 19:24:38,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 135 transitions, 441 flow [2024-10-11 19:24:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:24:38,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:24:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2024-10-11 19:24:38,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2024-10-11 19:24:38,304 INFO L175 Difference]: Start difference. First operand has 128 places, 130 transitions, 274 flow. Second operand 4 states and 444 transitions. [2024-10-11 19:24:38,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 135 transitions, 441 flow [2024-10-11 19:24:38,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 135 transitions, 431 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:24:38,307 INFO L231 Difference]: Finished difference. Result has 114 places, 116 transitions, 246 flow [2024-10-11 19:24:38,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=114, PETRI_TRANSITIONS=116} [2024-10-11 19:24:38,307 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -48 predicate places. [2024-10-11 19:24:38,308 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 116 transitions, 246 flow [2024-10-11 19:24:38,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:38,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:38,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:38,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 19:24:38,308 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:38,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:38,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1499607958, now seen corresponding path program 1 times [2024-10-11 19:24:38,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:38,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134775416] [2024-10-11 19:24:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:38,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:38,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:38,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134775416] [2024-10-11 19:24:38,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134775416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:38,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:38,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 19:24:38,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816790583] [2024-10-11 19:24:38,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:38,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 19:24:38,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:38,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 19:24:38,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 19:24:39,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 172 [2024-10-11 19:24:39,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 116 transitions, 246 flow. Second operand has 8 states, 8 states have (on average 75.375) internal successors, (603), 8 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:39,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:39,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 172 [2024-10-11 19:24:39,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:39,882 INFO L124 PetriNetUnfolderBase]: 2502/5391 cut-off events. [2024-10-11 19:24:39,882 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-10-11 19:24:39,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9547 conditions, 5391 events. 2502/5391 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 38803 event pairs, 536 based on Foata normal form. 0/4393 useless extension candidates. Maximal degree in co-relation 3717. Up to 3436 conditions per place. [2024-10-11 19:24:39,927 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 123 selfloop transitions, 12 changer transitions 0/183 dead transitions. [2024-10-11 19:24:39,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 183 transitions, 655 flow [2024-10-11 19:24:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 19:24:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 19:24:39,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 729 transitions. [2024-10-11 19:24:39,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.529796511627907 [2024-10-11 19:24:39,933 INFO L175 Difference]: Start difference. First operand has 114 places, 116 transitions, 246 flow. Second operand 8 states and 729 transitions. [2024-10-11 19:24:39,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 183 transitions, 655 flow [2024-10-11 19:24:39,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 183 transitions, 643 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:24:39,938 INFO L231 Difference]: Finished difference. Result has 122 places, 126 transitions, 312 flow [2024-10-11 19:24:39,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=312, PETRI_PLACES=122, PETRI_TRANSITIONS=126} [2024-10-11 19:24:39,939 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -40 predicate places. [2024-10-11 19:24:39,940 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 126 transitions, 312 flow [2024-10-11 19:24:39,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.375) internal successors, (603), 8 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:39,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:39,941 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:39,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 19:24:39,941 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:39,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:39,942 INFO L85 PathProgramCache]: Analyzing trace with hash -572019545, now seen corresponding path program 1 times [2024-10-11 19:24:39,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:39,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165057808] [2024-10-11 19:24:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:39,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:39,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:39,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165057808] [2024-10-11 19:24:39,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165057808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:39,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:39,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:24:39,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491745568] [2024-10-11 19:24:39,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:39,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:24:39,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:39,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:24:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:24:40,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-10-11 19:24:40,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 126 transitions, 312 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) [2024-10-11 19:24:40,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:40,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-10-11 19:24:40,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:40,328 INFO L124 PetriNetUnfolderBase]: 1382/3218 cut-off events. [2024-10-11 19:24:40,329 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-11 19:24:40,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5613 conditions, 3218 events. 1382/3218 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19569 event pairs, 703 based on Foata normal form. 55/2726 useless extension candidates. Maximal degree in co-relation 5606. Up to 1211 conditions per place. [2024-10-11 19:24:40,340 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 80 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2024-10-11 19:24:40,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 139 transitions, 478 flow [2024-10-11 19:24:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:24:40,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:24:40,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2024-10-11 19:24:40,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7558139534883721 [2024-10-11 19:24:40,342 INFO L175 Difference]: Start difference. First operand has 122 places, 126 transitions, 312 flow. Second operand 3 states and 390 transitions. [2024-10-11 19:24:40,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 139 transitions, 478 flow [2024-10-11 19:24:40,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 139 transitions, 451 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-10-11 19:24:40,344 INFO L231 Difference]: Finished difference. Result has 114 places, 116 transitions, 249 flow [2024-10-11 19:24:40,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=114, PETRI_TRANSITIONS=116} [2024-10-11 19:24:40,345 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -48 predicate places. [2024-10-11 19:24:40,345 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 116 transitions, 249 flow [2024-10-11 19:24:40,346 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) [2024-10-11 19:24:40,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:40,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:40,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 19:24:40,346 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:40,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:40,347 INFO L85 PathProgramCache]: Analyzing trace with hash -493300859, now seen corresponding path program 1 times [2024-10-11 19:24:40,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:40,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026061802] [2024-10-11 19:24:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:40,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:40,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:40,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026061802] [2024-10-11 19:24:40,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026061802] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:40,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:40,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:24:40,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471058522] [2024-10-11 19:24:40,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:40,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:24:40,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:40,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:24:40,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:24:40,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-10-11 19:24:40,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 116 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:40,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:40,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-10-11 19:24:40,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:40,778 INFO L124 PetriNetUnfolderBase]: 1392/3289 cut-off events. [2024-10-11 19:24:40,778 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-10-11 19:24:40,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5671 conditions, 3289 events. 1392/3289 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20449 event pairs, 1089 based on Foata normal form. 77/2806 useless extension candidates. Maximal degree in co-relation 5666. Up to 2215 conditions per place. [2024-10-11 19:24:40,787 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 59 selfloop transitions, 1 changer transitions 0/113 dead transitions. [2024-10-11 19:24:40,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 363 flow [2024-10-11 19:24:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:24:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:24:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2024-10-11 19:24:40,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6957364341085271 [2024-10-11 19:24:40,788 INFO L175 Difference]: Start difference. First operand has 114 places, 116 transitions, 249 flow. Second operand 3 states and 359 transitions. [2024-10-11 19:24:40,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 363 flow [2024-10-11 19:24:40,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:24:40,790 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 242 flow [2024-10-11 19:24:40,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=112, PETRI_TRANSITIONS=113} [2024-10-11 19:24:40,791 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-10-11 19:24:40,791 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 242 flow [2024-10-11 19:24:40,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:40,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:40,792 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:40,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 19:24:40,792 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:40,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:40,792 INFO L85 PathProgramCache]: Analyzing trace with hash -493300858, now seen corresponding path program 1 times [2024-10-11 19:24:40,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:40,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362319620] [2024-10-11 19:24:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:40,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:40,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362319620] [2024-10-11 19:24:40,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362319620] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:40,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:40,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:24:40,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598328709] [2024-10-11 19:24:40,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:40,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:24:40,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:40,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:24:40,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:24:40,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-10-11 19:24:40,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:40,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:40,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-10-11 19:24:40,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:41,223 INFO L124 PetriNetUnfolderBase]: 1392/3277 cut-off events. [2024-10-11 19:24:41,224 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-10-11 19:24:41,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 3277 events. 1392/3277 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20320 event pairs, 1089 based on Foata normal form. 0/2717 useless extension candidates. Maximal degree in co-relation 5641. Up to 2215 conditions per place. [2024-10-11 19:24:41,232 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 59 selfloop transitions, 1 changer transitions 0/112 dead transitions. [2024-10-11 19:24:41,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 112 transitions, 360 flow [2024-10-11 19:24:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:24:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:24:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2024-10-11 19:24:41,233 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7034883720930233 [2024-10-11 19:24:41,233 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 242 flow. Second operand 3 states and 363 transitions. [2024-10-11 19:24:41,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 112 transitions, 360 flow [2024-10-11 19:24:41,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:24:41,234 INFO L231 Difference]: Finished difference. Result has 112 places, 112 transitions, 241 flow [2024-10-11 19:24:41,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=112, PETRI_TRANSITIONS=112} [2024-10-11 19:24:41,235 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-10-11 19:24:41,235 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 112 transitions, 241 flow [2024-10-11 19:24:41,235 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) [2024-10-11 19:24:41,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:41,235 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] [2024-10-11 19:24:41,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 19:24:41,236 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:41,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:41,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1887543469, now seen corresponding path program 1 times [2024-10-11 19:24:41,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:41,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562392936] [2024-10-11 19:24:41,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:41,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:41,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:41,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:41,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562392936] [2024-10-11 19:24:41,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562392936] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:41,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:41,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:24:41,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577549231] [2024-10-11 19:24:41,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:41,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:24:41,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:41,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:24:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:24:41,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-10-11 19:24:41,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 112 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:41,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:41,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-10-11 19:24:41,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:41,627 INFO L124 PetriNetUnfolderBase]: 1392/3253 cut-off events. [2024-10-11 19:24:41,628 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-10-11 19:24:41,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5623 conditions, 3253 events. 1392/3253 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20054 event pairs, 1074 based on Foata normal form. 12/2729 useless extension candidates. Maximal degree in co-relation 5618. Up to 2186 conditions per place. [2024-10-11 19:24:41,638 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 65 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2024-10-11 19:24:41,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 118 transitions, 390 flow [2024-10-11 19:24:41,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:24:41,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:24:41,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-10-11 19:24:41,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6816860465116279 [2024-10-11 19:24:41,640 INFO L175 Difference]: Start difference. First operand has 112 places, 112 transitions, 241 flow. Second operand 4 states and 469 transitions. [2024-10-11 19:24:41,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 118 transitions, 390 flow [2024-10-11 19:24:41,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 118 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:24:41,641 INFO L231 Difference]: Finished difference. Result has 112 places, 110 transitions, 242 flow [2024-10-11 19:24:41,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=112, PETRI_TRANSITIONS=110} [2024-10-11 19:24:41,642 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-10-11 19:24:41,642 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 110 transitions, 242 flow [2024-10-11 19:24:41,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:41,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:41,643 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] [2024-10-11 19:24:41,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 19:24:41,643 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:41,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:41,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1887543470, now seen corresponding path program 1 times [2024-10-11 19:24:41,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:41,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244455067] [2024-10-11 19:24:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:41,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:41,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:41,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244455067] [2024-10-11 19:24:41,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244455067] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:41,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:41,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:24:41,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763131082] [2024-10-11 19:24:41,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:41,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:24:41,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:41,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:24:41,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:24:41,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-10-11 19:24:41,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:41,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:41,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-10-11 19:24:41,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:42,094 INFO L124 PetriNetUnfolderBase]: 1392/3229 cut-off events. [2024-10-11 19:24:42,094 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-11 19:24:42,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5624 conditions, 3229 events. 1392/3229 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 19779 event pairs, 1074 based on Foata normal form. 24/2729 useless extension candidates. Maximal degree in co-relation 5619. Up to 2186 conditions per place. [2024-10-11 19:24:42,103 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 65 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2024-10-11 19:24:42,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 116 transitions, 391 flow [2024-10-11 19:24:42,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:24:42,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:24:42,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-10-11 19:24:42,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6816860465116279 [2024-10-11 19:24:42,104 INFO L175 Difference]: Start difference. First operand has 112 places, 110 transitions, 242 flow. Second operand 4 states and 469 transitions. [2024-10-11 19:24:42,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 116 transitions, 391 flow [2024-10-11 19:24:42,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 116 transitions, 385 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:24:42,106 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 238 flow [2024-10-11 19:24:42,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=110, PETRI_TRANSITIONS=108} [2024-10-11 19:24:42,106 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -52 predicate places. [2024-10-11 19:24:42,106 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 238 flow [2024-10-11 19:24:42,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:42,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:42,107 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] [2024-10-11 19:24:42,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 19:24:42,107 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:42,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:42,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1615726486, now seen corresponding path program 1 times [2024-10-11 19:24:42,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:42,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980562044] [2024-10-11 19:24:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:42,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:42,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:42,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980562044] [2024-10-11 19:24:42,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980562044] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:42,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:42,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:24:42,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164320167] [2024-10-11 19:24:42,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:42,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:24:42,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:42,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:24:42,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:24:42,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-10-11 19:24:42,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 108 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:42,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:42,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-10-11 19:24:42,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:42,345 INFO L124 PetriNetUnfolderBase]: 1380/3217 cut-off events. [2024-10-11 19:24:42,345 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-11 19:24:42,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 3217 events. 1380/3217 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 19747 event pairs, 1074 based on Foata normal form. 0/2705 useless extension candidates. Maximal degree in co-relation 5595. Up to 2175 conditions per place. [2024-10-11 19:24:42,355 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 65 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-10-11 19:24:42,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 115 transitions, 387 flow [2024-10-11 19:24:42,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:24:42,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:24:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2024-10-11 19:24:42,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7228682170542635 [2024-10-11 19:24:42,356 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 238 flow. Second operand 3 states and 373 transitions. [2024-10-11 19:24:42,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 115 transitions, 387 flow [2024-10-11 19:24:42,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 115 transitions, 381 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:24:42,358 INFO L231 Difference]: Finished difference. Result has 109 places, 107 transitions, 234 flow [2024-10-11 19:24:42,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=109, PETRI_TRANSITIONS=107} [2024-10-11 19:24:42,359 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -53 predicate places. [2024-10-11 19:24:42,359 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 107 transitions, 234 flow [2024-10-11 19:24:42,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:42,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:42,359 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:42,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 19:24:42,360 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:42,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:42,360 INFO L85 PathProgramCache]: Analyzing trace with hash 367065732, now seen corresponding path program 1 times [2024-10-11 19:24:42,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:42,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582080970] [2024-10-11 19:24:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:42,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:42,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:42,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582080970] [2024-10-11 19:24:42,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582080970] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:42,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:42,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 19:24:42,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381044477] [2024-10-11 19:24:42,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:42,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 19:24:42,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:42,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 19:24:42,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-11 19:24:43,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-10-11 19:24:43,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 234 flow. Second operand has 9 states, 9 states have (on average 95.33333333333333) internal successors, (858), 9 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:43,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:43,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-10-11 19:24:43,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:43,473 INFO L124 PetriNetUnfolderBase]: 1640/3617 cut-off events. [2024-10-11 19:24:43,473 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-10-11 19:24:43,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6488 conditions, 3617 events. 1640/3617 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21834 event pairs, 406 based on Foata normal form. 0/3119 useless extension candidates. Maximal degree in co-relation 6483. Up to 2360 conditions per place. [2024-10-11 19:24:43,483 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 89 selfloop transitions, 9 changer transitions 0/137 dead transitions. [2024-10-11 19:24:43,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 137 transitions, 494 flow [2024-10-11 19:24:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 19:24:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 19:24:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 842 transitions. [2024-10-11 19:24:43,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6119186046511628 [2024-10-11 19:24:43,485 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 234 flow. Second operand 8 states and 842 transitions. [2024-10-11 19:24:43,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 137 transitions, 494 flow [2024-10-11 19:24:43,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 137 transitions, 490 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:24:43,487 INFO L231 Difference]: Finished difference. Result has 113 places, 105 transitions, 244 flow [2024-10-11 19:24:43,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=244, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2024-10-11 19:24:43,488 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -49 predicate places. [2024-10-11 19:24:43,488 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 244 flow [2024-10-11 19:24:43,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.33333333333333) internal successors, (858), 9 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:43,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:43,488 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] [2024-10-11 19:24:43,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 19:24:43,489 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:43,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:43,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1106935334, now seen corresponding path program 1 times [2024-10-11 19:24:43,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:43,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585869655] [2024-10-11 19:24:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:43,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:44,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:44,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585869655] [2024-10-11 19:24:44,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585869655] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:44,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:44,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-11 19:24:44,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644557997] [2024-10-11 19:24:44,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:44,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:24:44,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:44,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:24:44,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:24:45,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-10-11 19:24:45,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 244 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:45,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:45,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-10-11 19:24:45,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:46,022 INFO L124 PetriNetUnfolderBase]: 1634/3474 cut-off events. [2024-10-11 19:24:46,023 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-10-11 19:24:46,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6368 conditions, 3474 events. 1634/3474 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 20438 event pairs, 434 based on Foata normal form. 0/3084 useless extension candidates. Maximal degree in co-relation 6363. Up to 1938 conditions per place. [2024-10-11 19:24:46,033 INFO L140 encePairwiseOnDemand]: 158/172 looper letters, 125 selfloop transitions, 13 changer transitions 0/174 dead transitions. [2024-10-11 19:24:46,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 174 transitions, 668 flow [2024-10-11 19:24:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 19:24:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 19:24:46,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1254 transitions. [2024-10-11 19:24:46,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6075581395348837 [2024-10-11 19:24:46,043 INFO L175 Difference]: Start difference. First operand has 113 places, 105 transitions, 244 flow. Second operand 12 states and 1254 transitions. [2024-10-11 19:24:46,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 174 transitions, 668 flow [2024-10-11 19:24:46,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 174 transitions, 650 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-11 19:24:46,050 INFO L231 Difference]: Finished difference. Result has 114 places, 102 transitions, 252 flow [2024-10-11 19:24:46,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=252, PETRI_PLACES=114, PETRI_TRANSITIONS=102} [2024-10-11 19:24:46,051 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -48 predicate places. [2024-10-11 19:24:46,051 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 102 transitions, 252 flow [2024-10-11 19:24:46,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:46,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:46,055 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:46,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 19:24:46,055 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:46,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:46,055 INFO L85 PathProgramCache]: Analyzing trace with hash 919539447, now seen corresponding path program 1 times [2024-10-11 19:24:46,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:46,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388754979] [2024-10-11 19:24:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:46,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:46,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:46,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388754979] [2024-10-11 19:24:46,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388754979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:46,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:46,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-11 19:24:46,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386024793] [2024-10-11 19:24:46,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:46,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 19:24:46,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:46,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 19:24:46,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-11 19:24:47,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 172 [2024-10-11 19:24:47,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 102 transitions, 252 flow. Second operand has 13 states, 13 states have (on average 75.15384615384616) internal successors, (977), 13 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:47,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:47,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 172 [2024-10-11 19:24:47,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:48,634 INFO L124 PetriNetUnfolderBase]: 2303/4773 cut-off events. [2024-10-11 19:24:48,635 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-10-11 19:24:48,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8966 conditions, 4773 events. 2303/4773 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 30178 event pairs, 196 based on Foata normal form. 56/4342 useless extension candidates. Maximal degree in co-relation 8960. Up to 2057 conditions per place. [2024-10-11 19:24:48,660 INFO L140 encePairwiseOnDemand]: 154/172 looper letters, 155 selfloop transitions, 21 changer transitions 0/212 dead transitions. [2024-10-11 19:24:48,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 212 transitions, 850 flow [2024-10-11 19:24:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 19:24:48,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 19:24:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1124 transitions. [2024-10-11 19:24:48,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5026833631484794 [2024-10-11 19:24:48,663 INFO L175 Difference]: Start difference. First operand has 114 places, 102 transitions, 252 flow. Second operand 13 states and 1124 transitions. [2024-10-11 19:24:48,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 212 transitions, 850 flow [2024-10-11 19:24:48,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 212 transitions, 828 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-11 19:24:48,666 INFO L231 Difference]: Finished difference. Result has 120 places, 111 transitions, 331 flow [2024-10-11 19:24:48,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=331, PETRI_PLACES=120, PETRI_TRANSITIONS=111} [2024-10-11 19:24:48,667 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -42 predicate places. [2024-10-11 19:24:48,667 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 111 transitions, 331 flow [2024-10-11 19:24:48,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 75.15384615384616) internal successors, (977), 13 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:48,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:48,669 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:48,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 19:24:48,670 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:48,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:48,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1806403392, now seen corresponding path program 1 times [2024-10-11 19:24:48,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:48,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607984187] [2024-10-11 19:24:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:48,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:48,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:48,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607984187] [2024-10-11 19:24:48,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607984187] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:48,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:48,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:24:48,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882926621] [2024-10-11 19:24:48,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:48,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:24:48,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:48,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:24:48,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:24:48,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-10-11 19:24:48,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 111 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:48,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:48,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-10-11 19:24:48,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:49,234 INFO L124 PetriNetUnfolderBase]: 3297/7959 cut-off events. [2024-10-11 19:24:49,234 INFO L125 PetriNetUnfolderBase]: For 1435/1435 co-relation queries the response was YES. [2024-10-11 19:24:49,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15014 conditions, 7959 events. 3297/7959 cut-off events. For 1435/1435 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 64883 event pairs, 1489 based on Foata normal form. 117/6769 useless extension candidates. Maximal degree in co-relation 15004. Up to 3184 conditions per place. [2024-10-11 19:24:49,272 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 120 selfloop transitions, 2 changer transitions 0/167 dead transitions. [2024-10-11 19:24:49,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 167 transitions, 771 flow [2024-10-11 19:24:49,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:24:49,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:24:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2024-10-11 19:24:49,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7926356589147286 [2024-10-11 19:24:49,274 INFO L175 Difference]: Start difference. First operand has 120 places, 111 transitions, 331 flow. Second operand 3 states and 409 transitions. [2024-10-11 19:24:49,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 167 transitions, 771 flow [2024-10-11 19:24:49,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 167 transitions, 738 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-10-11 19:24:49,281 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 323 flow [2024-10-11 19:24:49,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2024-10-11 19:24:49,282 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -46 predicate places. [2024-10-11 19:24:49,282 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 323 flow [2024-10-11 19:24:49,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:49,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:49,282 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:49,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 19:24:49,283 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:49,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1745813825, now seen corresponding path program 1 times [2024-10-11 19:24:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:49,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029118574] [2024-10-11 19:24:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:49,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:49,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:49,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029118574] [2024-10-11 19:24:49,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029118574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:49,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:49,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:24:49,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691157525] [2024-10-11 19:24:49,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:49,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:24:49,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:49,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:24:49,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:24:49,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-10-11 19:24:49,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:49,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:49,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-10-11 19:24:49,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:50,122 INFO L124 PetriNetUnfolderBase]: 4169/8583 cut-off events. [2024-10-11 19:24:50,122 INFO L125 PetriNetUnfolderBase]: For 2082/2082 co-relation queries the response was YES. [2024-10-11 19:24:50,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18174 conditions, 8583 events. 4169/8583 cut-off events. For 2082/2082 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 62550 event pairs, 2275 based on Foata normal form. 54/7839 useless extension candidates. Maximal degree in co-relation 18162. Up to 5580 conditions per place. [2024-10-11 19:24:50,160 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 100 selfloop transitions, 3 changer transitions 0/147 dead transitions. [2024-10-11 19:24:50,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 147 transitions, 640 flow [2024-10-11 19:24:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:24:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:24:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 491 transitions. [2024-10-11 19:24:50,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7136627906976745 [2024-10-11 19:24:50,162 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 323 flow. Second operand 4 states and 491 transitions. [2024-10-11 19:24:50,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 147 transitions, 640 flow [2024-10-11 19:24:50,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 147 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:24:50,169 INFO L231 Difference]: Finished difference. Result has 119 places, 113 transitions, 337 flow [2024-10-11 19:24:50,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=119, PETRI_TRANSITIONS=113} [2024-10-11 19:24:50,169 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -43 predicate places. [2024-10-11 19:24:50,170 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 113 transitions, 337 flow [2024-10-11 19:24:50,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:50,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:50,170 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:50,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 19:24:50,170 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:50,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:50,171 INFO L85 PathProgramCache]: Analyzing trace with hash 324355802, now seen corresponding path program 1 times [2024-10-11 19:24:50,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:50,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742939130] [2024-10-11 19:24:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:50,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:50,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:50,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742939130] [2024-10-11 19:24:50,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742939130] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:50,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:50,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:24:50,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94362473] [2024-10-11 19:24:50,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:50,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:24:50,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:50,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:24:50,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:24:50,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-10-11 19:24:50,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 113 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:50,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:50,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-10-11 19:24:50,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:50,564 INFO L124 PetriNetUnfolderBase]: 2462/5567 cut-off events. [2024-10-11 19:24:50,564 INFO L125 PetriNetUnfolderBase]: For 1240/1240 co-relation queries the response was YES. [2024-10-11 19:24:50,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11440 conditions, 5567 events. 2462/5567 cut-off events. For 1240/1240 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 39008 event pairs, 1201 based on Foata normal form. 124/5048 useless extension candidates. Maximal degree in co-relation 11427. Up to 2282 conditions per place. [2024-10-11 19:24:50,585 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 78 selfloop transitions, 3 changer transitions 0/125 dead transitions. [2024-10-11 19:24:50,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 125 transitions, 523 flow [2024-10-11 19:24:50,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:24:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:24:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2024-10-11 19:24:50,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7286821705426356 [2024-10-11 19:24:50,587 INFO L175 Difference]: Start difference. First operand has 119 places, 113 transitions, 337 flow. Second operand 3 states and 376 transitions. [2024-10-11 19:24:50,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 125 transitions, 523 flow [2024-10-11 19:24:50,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 125 transitions, 505 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-10-11 19:24:50,590 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 312 flow [2024-10-11 19:24:50,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=112, 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=312, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2024-10-11 19:24:50,591 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -46 predicate places. [2024-10-11 19:24:50,591 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 312 flow [2024-10-11 19:24:50,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:50,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:50,591 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:50,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 19:24:50,592 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:50,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:50,592 INFO L85 PathProgramCache]: Analyzing trace with hash -557644918, now seen corresponding path program 1 times [2024-10-11 19:24:50,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:50,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535970637] [2024-10-11 19:24:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:50,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:50,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:50,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535970637] [2024-10-11 19:24:50,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535970637] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:50,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:50,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:24:50,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090935783] [2024-10-11 19:24:50,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:50,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:24:50,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:50,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:24:50,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:24:50,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-10-11 19:24:50,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:50,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:50,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-10-11 19:24:50,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:50,888 INFO L124 PetriNetUnfolderBase]: 1502/3796 cut-off events. [2024-10-11 19:24:50,889 INFO L125 PetriNetUnfolderBase]: For 1086/1086 co-relation queries the response was YES. [2024-10-11 19:24:50,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 3796 events. 1502/3796 cut-off events. For 1086/1086 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 24472 event pairs, 368 based on Foata normal form. 216/3627 useless extension candidates. Maximal degree in co-relation 7958. Up to 1831 conditions per place. [2024-10-11 19:24:50,901 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 70 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2024-10-11 19:24:50,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 122 transitions, 508 flow [2024-10-11 19:24:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:24:50,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:24:50,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2024-10-11 19:24:50,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7286821705426356 [2024-10-11 19:24:50,903 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 312 flow. Second operand 3 states and 376 transitions. [2024-10-11 19:24:50,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 122 transitions, 508 flow [2024-10-11 19:24:50,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 122 transitions, 502 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:24:50,906 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 318 flow [2024-10-11 19:24:50,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2024-10-11 19:24:50,907 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -46 predicate places. [2024-10-11 19:24:50,907 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 318 flow [2024-10-11 19:24:50,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:50,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:50,907 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] [2024-10-11 19:24:50,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 19:24:50,907 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:50,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:50,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1945027013, now seen corresponding path program 1 times [2024-10-11 19:24:50,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:50,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293947497] [2024-10-11 19:24:50,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:50,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:50,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:50,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293947497] [2024-10-11 19:24:50,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293947497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:50,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:50,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:24:50,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775406196] [2024-10-11 19:24:50,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:50,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:24:50,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:50,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:24:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:24:51,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 172 [2024-10-11 19:24:51,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:51,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:51,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 172 [2024-10-11 19:24:51,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:51,363 INFO L124 PetriNetUnfolderBase]: 1502/3507 cut-off events. [2024-10-11 19:24:51,364 INFO L125 PetriNetUnfolderBase]: For 1239/1239 co-relation queries the response was YES. [2024-10-11 19:24:51,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7978 conditions, 3507 events. 1502/3507 cut-off events. For 1239/1239 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 21041 event pairs, 1013 based on Foata normal form. 126/3451 useless extension candidates. Maximal degree in co-relation 7966. Up to 2188 conditions per place. [2024-10-11 19:24:51,376 INFO L140 encePairwiseOnDemand]: 161/172 looper letters, 65 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-10-11 19:24:51,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 455 flow [2024-10-11 19:24:51,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:24:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:24:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2024-10-11 19:24:51,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2024-10-11 19:24:51,377 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 318 flow. Second operand 4 states and 444 transitions. [2024-10-11 19:24:51,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 455 flow [2024-10-11 19:24:51,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 106 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:24:51,380 INFO L231 Difference]: Finished difference. Result has 110 places, 101 transitions, 302 flow [2024-10-11 19:24:51,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=107, 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=302, PETRI_PLACES=110, PETRI_TRANSITIONS=101} [2024-10-11 19:24:51,381 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -52 predicate places. [2024-10-11 19:24:51,381 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 101 transitions, 302 flow [2024-10-11 19:24:51,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:51,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:51,381 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] [2024-10-11 19:24:51,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 19:24:51,381 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:51,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:51,382 INFO L85 PathProgramCache]: Analyzing trace with hash 852929480, now seen corresponding path program 1 times [2024-10-11 19:24:51,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:51,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469934828] [2024-10-11 19:24:51,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:51,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:51,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:51,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469934828] [2024-10-11 19:24:51,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469934828] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:51,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:51,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:24:51,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925588760] [2024-10-11 19:24:51,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:51,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:24:51,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:51,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:24:51,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:24:51,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 172 [2024-10-11 19:24:51,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 101 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:51,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:51,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 172 [2024-10-11 19:24:51,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:51,859 INFO L124 PetriNetUnfolderBase]: 1502/3327 cut-off events. [2024-10-11 19:24:51,859 INFO L125 PetriNetUnfolderBase]: For 1188/1188 co-relation queries the response was YES. [2024-10-11 19:24:51,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7682 conditions, 3327 events. 1502/3327 cut-off events. For 1188/1188 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 18679 event pairs, 1013 based on Foata normal form. 126/3361 useless extension candidates. Maximal degree in co-relation 7669. Up to 2188 conditions per place. [2024-10-11 19:24:51,870 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 65 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-10-11 19:24:51,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 99 transitions, 441 flow [2024-10-11 19:24:51,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:24:51,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:24:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 447 transitions. [2024-10-11 19:24:51,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6497093023255814 [2024-10-11 19:24:51,871 INFO L175 Difference]: Start difference. First operand has 110 places, 101 transitions, 302 flow. Second operand 4 states and 447 transitions. [2024-10-11 19:24:51,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 99 transitions, 441 flow [2024-10-11 19:24:51,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 99 transitions, 435 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:24:51,874 INFO L231 Difference]: Finished difference. Result has 103 places, 94 transitions, 288 flow [2024-10-11 19:24:51,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=103, PETRI_TRANSITIONS=94} [2024-10-11 19:24:51,875 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -59 predicate places. [2024-10-11 19:24:51,875 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 94 transitions, 288 flow [2024-10-11 19:24:51,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:51,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:51,875 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] [2024-10-11 19:24:51,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 19:24:51,875 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)] === [2024-10-11 19:24:51,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:51,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1797701178, now seen corresponding path program 1 times [2024-10-11 19:24:51,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:51,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287097082] [2024-10-11 19:24:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:51,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:24:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287097082] [2024-10-11 19:24:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287097082] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:24:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12764760] [2024-10-11 19:24:51,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:51,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:24:51,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:24:51,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:24:51,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:24:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:52,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 19:24:52,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:24:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:24:52,113 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:24:52,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12764760] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:52,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 19:24:52,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-11 19:24:52,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672983039] [2024-10-11 19:24:52,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:52,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:24:52,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:52,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:24:52,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:24:52,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-10-11 19:24:52,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 94 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:52,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:52,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-10-11 19:24:52,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:52,386 INFO L124 PetriNetUnfolderBase]: 1502/3330 cut-off events. [2024-10-11 19:24:52,386 INFO L125 PetriNetUnfolderBase]: For 1164/1164 co-relation queries the response was YES. [2024-10-11 19:24:52,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7685 conditions, 3330 events. 1502/3330 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 18708 event pairs, 1193 based on Foata normal form. 5/3229 useless extension candidates. Maximal degree in co-relation 7672. Up to 2606 conditions per place. [2024-10-11 19:24:52,396 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 61 selfloop transitions, 1 changer transitions 2/93 dead transitions. [2024-10-11 19:24:52,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 412 flow [2024-10-11 19:24:52,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:24:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:24:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2024-10-11 19:24:52,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6976744186046512 [2024-10-11 19:24:52,398 INFO L175 Difference]: Start difference. First operand has 103 places, 94 transitions, 288 flow. Second operand 3 states and 360 transitions. [2024-10-11 19:24:52,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 412 flow [2024-10-11 19:24:52,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 93 transitions, 406 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:24:52,401 INFO L231 Difference]: Finished difference. Result has 101 places, 91 transitions, 277 flow [2024-10-11 19:24:52,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=101, PETRI_TRANSITIONS=91} [2024-10-11 19:24:52,401 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -61 predicate places. [2024-10-11 19:24:52,401 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 91 transitions, 277 flow [2024-10-11 19:24:52,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:52,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:52,402 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] [2024-10-11 19:24:52,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 19:24:52,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-11 19:24:52,603 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:52,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash -25912358, now seen corresponding path program 1 times [2024-10-11 19:24:52,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:52,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111132902] [2024-10-11 19:24:52,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:52,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:53,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:53,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111132902] [2024-10-11 19:24:53,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111132902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:53,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:53,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-11 19:24:53,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819320382] [2024-10-11 19:24:53,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:53,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:24:53,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:53,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:24:53,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:24:54,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-10-11 19:24:54,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 91 transitions, 277 flow. Second operand has 14 states, 14 states have (on average 95.92857142857143) internal successors, (1343), 14 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:54,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:54,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-10-11 19:24:54,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:54,864 INFO L124 PetriNetUnfolderBase]: 1358/2888 cut-off events. [2024-10-11 19:24:54,864 INFO L125 PetriNetUnfolderBase]: For 950/950 co-relation queries the response was YES. [2024-10-11 19:24:54,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6723 conditions, 2888 events. 1358/2888 cut-off events. For 950/950 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 14359 event pairs, 281 based on Foata normal form. 0/2814 useless extension candidates. Maximal degree in co-relation 6710. Up to 1267 conditions per place. [2024-10-11 19:24:54,873 INFO L140 encePairwiseOnDemand]: 152/172 looper letters, 122 selfloop transitions, 19 changer transitions 14/175 dead transitions. [2024-10-11 19:24:54,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 175 transitions, 853 flow [2024-10-11 19:24:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:24:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:24:54,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1445 transitions. [2024-10-11 19:24:54,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6000830564784053 [2024-10-11 19:24:54,877 INFO L175 Difference]: Start difference. First operand has 101 places, 91 transitions, 277 flow. Second operand 14 states and 1445 transitions. [2024-10-11 19:24:54,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 175 transitions, 853 flow [2024-10-11 19:24:54,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 175 transitions, 846 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 19:24:54,881 INFO L231 Difference]: Finished difference. Result has 113 places, 92 transitions, 321 flow [2024-10-11 19:24:54,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=321, PETRI_PLACES=113, PETRI_TRANSITIONS=92} [2024-10-11 19:24:54,881 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -49 predicate places. [2024-10-11 19:24:54,882 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 92 transitions, 321 flow [2024-10-11 19:24:54,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 95.92857142857143) internal successors, (1343), 14 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:54,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:54,883 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] [2024-10-11 19:24:54,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 19:24:54,883 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:54,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:54,884 INFO L85 PathProgramCache]: Analyzing trace with hash -362532025, now seen corresponding path program 1 times [2024-10-11 19:24:54,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:54,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820404523] [2024-10-11 19:24:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:54,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:56,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:56,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820404523] [2024-10-11 19:24:56,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820404523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:56,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:56,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-10-11 19:24:56,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182505062] [2024-10-11 19:24:56,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:56,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:24:56,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:56,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:24:56,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:24:57,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 172 [2024-10-11 19:24:57,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 92 transitions, 321 flow. Second operand has 18 states, 18 states have (on average 64.38888888888889) internal successors, (1159), 18 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:57,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:57,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 172 [2024-10-11 19:24:57,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:58,131 INFO L124 PetriNetUnfolderBase]: 1500/3163 cut-off events. [2024-10-11 19:24:58,131 INFO L125 PetriNetUnfolderBase]: For 1166/1166 co-relation queries the response was YES. [2024-10-11 19:24:58,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7609 conditions, 3163 events. 1500/3163 cut-off events. For 1166/1166 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 15306 event pairs, 216 based on Foata normal form. 0/3077 useless extension candidates. Maximal degree in co-relation 7594. Up to 939 conditions per place. [2024-10-11 19:24:58,142 INFO L140 encePairwiseOnDemand]: 151/172 looper letters, 148 selfloop transitions, 20 changer transitions 15/202 dead transitions. [2024-10-11 19:24:58,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 202 transitions, 1039 flow [2024-10-11 19:24:58,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 19:24:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 19:24:58,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1159 transitions. [2024-10-11 19:24:58,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4211482558139535 [2024-10-11 19:24:58,144 INFO L175 Difference]: Start difference. First operand has 113 places, 92 transitions, 321 flow. Second operand 16 states and 1159 transitions. [2024-10-11 19:24:58,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 202 transitions, 1039 flow [2024-10-11 19:24:58,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 202 transitions, 1013 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-11 19:24:58,149 INFO L231 Difference]: Finished difference. Result has 122 places, 98 transitions, 376 flow [2024-10-11 19:24:58,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=376, PETRI_PLACES=122, PETRI_TRANSITIONS=98} [2024-10-11 19:24:58,149 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -40 predicate places. [2024-10-11 19:24:58,149 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 98 transitions, 376 flow [2024-10-11 19:24:58,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 64.38888888888889) internal successors, (1159), 18 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:58,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:58,150 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] [2024-10-11 19:24:58,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 19:24:58,150 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:58,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:58,151 INFO L85 PathProgramCache]: Analyzing trace with hash -413183879, now seen corresponding path program 1 times [2024-10-11 19:24:58,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:58,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341750287] [2024-10-11 19:24:58,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:58,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:58,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:58,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:58,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341750287] [2024-10-11 19:24:58,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341750287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:24:58,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:24:58,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:24:58,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569706020] [2024-10-11 19:24:58,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:24:58,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:24:58,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:58,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:24:58,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:24:58,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-10-11 19:24:58,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 98 transitions, 376 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:58,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:58,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-10-11 19:24:58,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:58,820 INFO L124 PetriNetUnfolderBase]: 1385/3069 cut-off events. [2024-10-11 19:24:58,821 INFO L125 PetriNetUnfolderBase]: For 1373/1378 co-relation queries the response was YES. [2024-10-11 19:24:58,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7459 conditions, 3069 events. 1385/3069 cut-off events. For 1373/1378 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 15792 event pairs, 682 based on Foata normal form. 12/3010 useless extension candidates. Maximal degree in co-relation 7440. Up to 1704 conditions per place. [2024-10-11 19:24:58,864 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 115 selfloop transitions, 3 changer transitions 0/150 dead transitions. [2024-10-11 19:24:58,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 150 transitions, 824 flow [2024-10-11 19:24:58,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:24:58,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:24:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2024-10-11 19:24:58,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7311046511627907 [2024-10-11 19:24:58,866 INFO L175 Difference]: Start difference. First operand has 122 places, 98 transitions, 376 flow. Second operand 4 states and 503 transitions. [2024-10-11 19:24:58,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 150 transitions, 824 flow [2024-10-11 19:24:58,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 150 transitions, 778 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-11 19:24:58,871 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 357 flow [2024-10-11 19:24:58,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=357, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-10-11 19:24:58,872 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -47 predicate places. [2024-10-11 19:24:58,872 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 357 flow [2024-10-11 19:24:58,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:24:58,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:58,872 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] [2024-10-11 19:24:58,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-11 19:24:58,873 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:24:58,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:58,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1496504280, now seen corresponding path program 1 times [2024-10-11 19:24:58,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:58,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160286131] [2024-10-11 19:24:58,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:58,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:00,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:00,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160286131] [2024-10-11 19:25:00,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160286131] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:00,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:00,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-10-11 19:25:00,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571452674] [2024-10-11 19:25:00,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:00,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 19:25:00,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:00,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 19:25:00,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-10-11 19:25:01,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 172 [2024-10-11 19:25:01,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 357 flow. Second operand has 20 states, 20 states have (on average 93.55) internal successors, (1871), 20 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:01,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:01,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 172 [2024-10-11 19:25:01,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:02,686 INFO L124 PetriNetUnfolderBase]: 1492/3139 cut-off events. [2024-10-11 19:25:02,686 INFO L125 PetriNetUnfolderBase]: For 1915/1915 co-relation queries the response was YES. [2024-10-11 19:25:02,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8051 conditions, 3139 events. 1492/3139 cut-off events. For 1915/1915 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 15018 event pairs, 211 based on Foata normal form. 0/3096 useless extension candidates. Maximal degree in co-relation 8031. Up to 906 conditions per place. [2024-10-11 19:25:02,701 INFO L140 encePairwiseOnDemand]: 147/172 looper letters, 155 selfloop transitions, 24 changer transitions 16/214 dead transitions. [2024-10-11 19:25:02,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 214 transitions, 1184 flow [2024-10-11 19:25:02,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 19:25:02,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 19:25:02,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1815 transitions. [2024-10-11 19:25:02,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862403100775194 [2024-10-11 19:25:02,704 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 357 flow. Second operand 18 states and 1815 transitions. [2024-10-11 19:25:02,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 214 transitions, 1184 flow [2024-10-11 19:25:02,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 214 transitions, 1134 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-11 19:25:02,710 INFO L231 Difference]: Finished difference. Result has 132 places, 101 transitions, 421 flow [2024-10-11 19:25:02,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=421, PETRI_PLACES=132, PETRI_TRANSITIONS=101} [2024-10-11 19:25:02,710 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -30 predicate places. [2024-10-11 19:25:02,711 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 101 transitions, 421 flow [2024-10-11 19:25:02,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 93.55) internal successors, (1871), 20 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:02,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:02,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:25:02,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-11 19:25:02,712 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:25:02,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:02,712 INFO L85 PathProgramCache]: Analyzing trace with hash -230509734, now seen corresponding path program 1 times [2024-10-11 19:25:02,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:02,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022190302] [2024-10-11 19:25:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:02,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:05,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:05,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022190302] [2024-10-11 19:25:05,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022190302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:05,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:05,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-10-11 19:25:05,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875972090] [2024-10-11 19:25:05,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:05,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 19:25:05,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:05,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 19:25:05,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2024-10-11 19:25:09,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-10-11 19:25:09,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 101 transitions, 421 flow. Second operand has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:09,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:09,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-10-11 19:25:09,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:11,364 INFO L124 PetriNetUnfolderBase]: 1772/3777 cut-off events. [2024-10-11 19:25:11,364 INFO L125 PetriNetUnfolderBase]: For 2152/2154 co-relation queries the response was YES. [2024-10-11 19:25:11,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9969 conditions, 3777 events. 1772/3777 cut-off events. For 2152/2154 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 19887 event pairs, 398 based on Foata normal form. 0/3726 useless extension candidates. Maximal degree in co-relation 9946. Up to 2455 conditions per place. [2024-10-11 19:25:11,376 INFO L140 encePairwiseOnDemand]: 145/172 looper letters, 158 selfloop transitions, 49 changer transitions 20/248 dead transitions. [2024-10-11 19:25:11,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 248 transitions, 1449 flow [2024-10-11 19:25:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 19:25:11,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 19:25:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2785 transitions. [2024-10-11 19:25:11,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782807308970099 [2024-10-11 19:25:11,379 INFO L175 Difference]: Start difference. First operand has 132 places, 101 transitions, 421 flow. Second operand 28 states and 2785 transitions. [2024-10-11 19:25:11,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 248 transitions, 1449 flow [2024-10-11 19:25:11,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 248 transitions, 1371 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-10-11 19:25:11,385 INFO L231 Difference]: Finished difference. Result has 163 places, 146 transitions, 819 flow [2024-10-11 19:25:11,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=819, PETRI_PLACES=163, PETRI_TRANSITIONS=146} [2024-10-11 19:25:11,385 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 1 predicate places. [2024-10-11 19:25:11,386 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 146 transitions, 819 flow [2024-10-11 19:25:11,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:11,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:11,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:25:11,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-11 19:25:11,387 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:25:11,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:11,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1838174818, now seen corresponding path program 2 times [2024-10-11 19:25:11,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:11,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300154745] [2024-10-11 19:25:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:11,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:13,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:13,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300154745] [2024-10-11 19:25:13,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300154745] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:13,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:13,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-10-11 19:25:13,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481946529] [2024-10-11 19:25:13,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:13,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 19:25:13,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:13,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 19:25:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2024-10-11 19:25:16,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-10-11 19:25:16,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 146 transitions, 819 flow. Second operand has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:16,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:16,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-10-11 19:25:16,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:18,599 INFO L124 PetriNetUnfolderBase]: 2011/4306 cut-off events. [2024-10-11 19:25:18,600 INFO L125 PetriNetUnfolderBase]: For 6081/6081 co-relation queries the response was YES. [2024-10-11 19:25:18,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12863 conditions, 4306 events. 2011/4306 cut-off events. For 6081/6081 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 23822 event pairs, 450 based on Foata normal form. 0/4253 useless extension candidates. Maximal degree in co-relation 12822. Up to 2776 conditions per place. [2024-10-11 19:25:18,629 INFO L140 encePairwiseOnDemand]: 145/172 looper letters, 193 selfloop transitions, 47 changer transitions 22/283 dead transitions. [2024-10-11 19:25:18,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 283 transitions, 1995 flow [2024-10-11 19:25:18,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 19:25:18,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 19:25:18,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2775 transitions. [2024-10-11 19:25:18,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5762043189368771 [2024-10-11 19:25:18,632 INFO L175 Difference]: Start difference. First operand has 163 places, 146 transitions, 819 flow. Second operand 28 states and 2775 transitions. [2024-10-11 19:25:18,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 283 transitions, 1995 flow [2024-10-11 19:25:18,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 283 transitions, 1987 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 19:25:18,651 INFO L231 Difference]: Finished difference. Result has 208 places, 180 transitions, 1302 flow [2024-10-11 19:25:18,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1302, PETRI_PLACES=208, PETRI_TRANSITIONS=180} [2024-10-11 19:25:18,652 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 46 predicate places. [2024-10-11 19:25:18,652 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 180 transitions, 1302 flow [2024-10-11 19:25:18,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:18,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:18,653 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:25:18,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-11 19:25:18,653 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:25:18,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:18,653 INFO L85 PathProgramCache]: Analyzing trace with hash -673902764, now seen corresponding path program 3 times [2024-10-11 19:25:18,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:18,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468512552] [2024-10-11 19:25:18,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:18,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:20,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:20,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468512552] [2024-10-11 19:25:20,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468512552] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:20,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:20,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-10-11 19:25:20,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493545612] [2024-10-11 19:25:20,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:20,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 19:25:20,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:20,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 19:25:20,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-10-11 19:25:25,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-10-11 19:25:25,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 180 transitions, 1302 flow. Second operand has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:25,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:25,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-10-11 19:25:25,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:27,053 INFO L124 PetriNetUnfolderBase]: 2236/4802 cut-off events. [2024-10-11 19:25:27,054 INFO L125 PetriNetUnfolderBase]: For 18398/18398 co-relation queries the response was YES. [2024-10-11 19:25:27,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17127 conditions, 4802 events. 2236/4802 cut-off events. For 18398/18398 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 27702 event pairs, 479 based on Foata normal form. 0/4743 useless extension candidates. Maximal degree in co-relation 17065. Up to 3194 conditions per place. [2024-10-11 19:25:27,090 INFO L140 encePairwiseOnDemand]: 145/172 looper letters, 227 selfloop transitions, 49 changer transitions 23/320 dead transitions. [2024-10-11 19:25:27,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 320 transitions, 2776 flow [2024-10-11 19:25:27,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 19:25:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 19:25:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2780 transitions. [2024-10-11 19:25:27,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5772425249169435 [2024-10-11 19:25:27,093 INFO L175 Difference]: Start difference. First operand has 208 places, 180 transitions, 1302 flow. Second operand 28 states and 2780 transitions. [2024-10-11 19:25:27,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 320 transitions, 2776 flow [2024-10-11 19:25:27,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 320 transitions, 2647 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-10-11 19:25:27,136 INFO L231 Difference]: Finished difference. Result has 251 places, 214 transitions, 1792 flow [2024-10-11 19:25:27,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1792, PETRI_PLACES=251, PETRI_TRANSITIONS=214} [2024-10-11 19:25:27,137 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 89 predicate places. [2024-10-11 19:25:27,137 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 214 transitions, 1792 flow [2024-10-11 19:25:27,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:27,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:27,138 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] [2024-10-11 19:25:27,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-11 19:25:27,138 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:25:27,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:27,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1438031966, now seen corresponding path program 4 times [2024-10-11 19:25:27,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:27,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139407572] [2024-10-11 19:25:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:27,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:29,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:29,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139407572] [2024-10-11 19:25:29,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139407572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:29,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:29,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-10-11 19:25:29,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850462273] [2024-10-11 19:25:29,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:29,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 19:25:29,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:29,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 19:25:29,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2024-10-11 19:25:33,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-10-11 19:25:33,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 214 transitions, 1792 flow. Second operand has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:33,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:33,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-10-11 19:25:33,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:35,071 INFO L124 PetriNetUnfolderBase]: 2455/5289 cut-off events. [2024-10-11 19:25:35,071 INFO L125 PetriNetUnfolderBase]: For 39506/39506 co-relation queries the response was YES. [2024-10-11 19:25:35,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21342 conditions, 5289 events. 2455/5289 cut-off events. For 39506/39506 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 31586 event pairs, 577 based on Foata normal form. 0/5224 useless extension candidates. Maximal degree in co-relation 21259. Up to 3608 conditions per place. [2024-10-11 19:25:35,117 INFO L140 encePairwiseOnDemand]: 145/172 looper letters, 255 selfloop transitions, 52 changer transitions 24/352 dead transitions. [2024-10-11 19:25:35,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 352 transitions, 3509 flow [2024-10-11 19:25:35,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 19:25:35,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 19:25:35,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2780 transitions. [2024-10-11 19:25:35,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5772425249169435 [2024-10-11 19:25:35,126 INFO L175 Difference]: Start difference. First operand has 251 places, 214 transitions, 1792 flow. Second operand 28 states and 2780 transitions. [2024-10-11 19:25:35,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 352 transitions, 3509 flow [2024-10-11 19:25:35,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 352 transitions, 3274 flow, removed 109 selfloop flow, removed 5 redundant places. [2024-10-11 19:25:35,216 INFO L231 Difference]: Finished difference. Result has 292 places, 245 transitions, 2256 flow [2024-10-11 19:25:35,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2256, PETRI_PLACES=292, PETRI_TRANSITIONS=245} [2024-10-11 19:25:35,219 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 130 predicate places. [2024-10-11 19:25:35,220 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 245 transitions, 2256 flow [2024-10-11 19:25:35,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:35,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:35,220 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] [2024-10-11 19:25:35,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-11 19:25:35,220 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:25:35,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:35,221 INFO L85 PathProgramCache]: Analyzing trace with hash 549123106, now seen corresponding path program 5 times [2024-10-11 19:25:35,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:35,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787481322] [2024-10-11 19:25:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:35,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:37,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:37,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787481322] [2024-10-11 19:25:37,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787481322] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:37,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:37,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-10-11 19:25:37,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087937150] [2024-10-11 19:25:37,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:37,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 19:25:37,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:37,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 19:25:37,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2024-10-11 19:25:40,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-10-11 19:25:40,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 245 transitions, 2256 flow. Second operand has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:40,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:40,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-10-11 19:25:40,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:42,986 INFO L124 PetriNetUnfolderBase]: 2674/5776 cut-off events. [2024-10-11 19:25:42,986 INFO L125 PetriNetUnfolderBase]: For 69930/69930 co-relation queries the response was YES. [2024-10-11 19:25:43,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25582 conditions, 5776 events. 2674/5776 cut-off events. For 69930/69930 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 35687 event pairs, 612 based on Foata normal form. 0/5707 useless extension candidates. Maximal degree in co-relation 25479. Up to 3894 conditions per place. [2024-10-11 19:25:43,031 INFO L140 encePairwiseOnDemand]: 146/172 looper letters, 285 selfloop transitions, 56 changer transitions 25/387 dead transitions. [2024-10-11 19:25:43,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 387 transitions, 4248 flow [2024-10-11 19:25:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 19:25:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 19:25:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2784 transitions. [2024-10-11 19:25:43,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5780730897009967 [2024-10-11 19:25:43,033 INFO L175 Difference]: Start difference. First operand has 292 places, 245 transitions, 2256 flow. Second operand 28 states and 2784 transitions. [2024-10-11 19:25:43,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 387 transitions, 4248 flow [2024-10-11 19:25:43,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 387 transitions, 3905 flow, removed 154 selfloop flow, removed 7 redundant places. [2024-10-11 19:25:43,150 INFO L231 Difference]: Finished difference. Result has 326 places, 275 transitions, 2662 flow [2024-10-11 19:25:43,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2662, PETRI_PLACES=326, PETRI_TRANSITIONS=275} [2024-10-11 19:25:43,150 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 164 predicate places. [2024-10-11 19:25:43,150 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 275 transitions, 2662 flow [2024-10-11 19:25:43,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:43,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:43,151 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] [2024-10-11 19:25:43,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-10-11 19:25:43,152 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:25:43,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:43,152 INFO L85 PathProgramCache]: Analyzing trace with hash -811850018, now seen corresponding path program 6 times [2024-10-11 19:25:43,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:43,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118205272] [2024-10-11 19:25:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:43,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:45,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:45,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:45,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118205272] [2024-10-11 19:25:45,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118205272] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:45,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:45,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-10-11 19:25:45,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643691853] [2024-10-11 19:25:45,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:45,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 19:25:45,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:45,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 19:25:45,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-10-11 19:25:49,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-10-11 19:25:49,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 275 transitions, 2662 flow. Second operand has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:49,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:25:49,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-10-11 19:25:49,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:25:51,810 INFO L124 PetriNetUnfolderBase]: 2942/6358 cut-off events. [2024-10-11 19:25:51,810 INFO L125 PetriNetUnfolderBase]: For 97696/97696 co-relation queries the response was YES. [2024-10-11 19:25:51,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29503 conditions, 6358 events. 2942/6358 cut-off events. For 97696/97696 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 40397 event pairs, 571 based on Foata normal form. 0/6293 useless extension candidates. Maximal degree in co-relation 29385. Up to 3438 conditions per place. [2024-10-11 19:25:51,873 INFO L140 encePairwiseOnDemand]: 145/172 looper letters, 312 selfloop transitions, 80 changer transitions 34/447 dead transitions. [2024-10-11 19:25:51,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 447 transitions, 5193 flow [2024-10-11 19:25:51,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-11 19:25:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-11 19:25:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3090 transitions. [2024-10-11 19:25:51,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5795198799699925 [2024-10-11 19:25:51,876 INFO L175 Difference]: Start difference. First operand has 326 places, 275 transitions, 2662 flow. Second operand 31 states and 3090 transitions. [2024-10-11 19:25:51,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 447 transitions, 5193 flow [2024-10-11 19:25:52,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 447 transitions, 4790 flow, removed 184 selfloop flow, removed 7 redundant places. [2024-10-11 19:25:52,071 INFO L231 Difference]: Finished difference. Result has 364 places, 312 transitions, 3259 flow [2024-10-11 19:25:52,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3259, PETRI_PLACES=364, PETRI_TRANSITIONS=312} [2024-10-11 19:25:52,071 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 202 predicate places. [2024-10-11 19:25:52,071 INFO L471 AbstractCegarLoop]: Abstraction has has 364 places, 312 transitions, 3259 flow [2024-10-11 19:25:52,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:25:52,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:25:52,073 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] [2024-10-11 19:25:52,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-11 19:25:52,073 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-10-11 19:25:52,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:25:52,073 INFO L85 PathProgramCache]: Analyzing trace with hash -87576260, now seen corresponding path program 7 times [2024-10-11 19:25:52,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:25:52,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101672627] [2024-10-11 19:25:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:25:52,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:25:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:25:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:25:53,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:25:53,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101672627] [2024-10-11 19:25:53,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101672627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:25:53,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:25:53,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2024-10-11 19:25:53,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922939383] [2024-10-11 19:25:53,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:25:53,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 19:25:53,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:25:53,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 19:25:53,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756