./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix016.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix016.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix016.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix016.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:19:43,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:19:43,565 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:19:43,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:19:43,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:19:43,594 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:19:43,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:19:43,595 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:19:43,596 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:19:43,598 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:19:43,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:19:43,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:19:43,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:19:43,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:19:43,601 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:19:43,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:19:43,601 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:19:43,601 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:19:43,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:19:43,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:19:43,602 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:19:43,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:19:43,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:19:43,603 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:19:43,603 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:19:43,603 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:19:43,603 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:19:43,604 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:19:43,604 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:19:43,604 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:19:43,605 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:19:43,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:19:43,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:19:43,605 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:19:43,605 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:19:43,606 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:19:43,606 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:19:43,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:19:43,606 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:19:43,606 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:19:43,606 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:19:43,606 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:19:43,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:19:43,607 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:19:43,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:19:43,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:19:43,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:19:43,831 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:19:43,832 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:19:43,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix016.oepc.yml/witness.yml [2024-06-27 18:19:43,989 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:19:43,990 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:19:43,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix016.oepc.i [2024-06-27 18:19:45,023 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:19:45,241 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:19:45,241 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016.oepc.i [2024-06-27 18:19:45,254 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e9377662/5982934c44b949cdb17286577001a881/FLAG7f62882ae [2024-06-27 18:19:45,265 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e9377662/5982934c44b949cdb17286577001a881 [2024-06-27 18:19:45,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:19:45,267 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:19:45,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:19:45,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:19:45,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:19:45,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:19:43" (1/2) ... [2024-06-27 18:19:45,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de7cf68 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:19:45, skipping insertion in model container [2024-06-27 18:19:45,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:19:43" (1/2) ... [2024-06-27 18:19:45,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4be19b21 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:19:45, skipping insertion in model container [2024-06-27 18:19:45,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:19:45" (2/2) ... [2024-06-27 18:19:45,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de7cf68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45, skipping insertion in model container [2024-06-27 18:19:45,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:19:45" (2/2) ... [2024-06-27 18:19:45,276 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:19:45,356 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:19:45,357 INFO L97 edCorrectnessWitness]: Location invariant before [L845-L845] (((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0) [2024-06-27 18:19:45,357 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0) [2024-06-27 18:19:45,357 INFO L97 edCorrectnessWitness]: Location invariant before [L843-L843] (((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0) [2024-06-27 18:19:45,357 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:19:45,357 INFO L106 edCorrectnessWitness]: ghost_update [L841-L841] multithreaded = 1; [2024-06-27 18:19:45,393 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:19:45,539 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016.oepc.i[945,958] [2024-06-27 18:19:45,688 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:19:45,701 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:19:45,734 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:19:45,802 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:19:45,827 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:19:45,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45 WrapperNode [2024-06-27 18:19:45,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:19:45,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:19:45,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:19:45,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:19:45,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45" (1/1) ... [2024-06-27 18:19:45,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45" (1/1) ... [2024-06-27 18:19:45,883 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 123 [2024-06-27 18:19:45,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:19:45,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:19:45,888 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:19:45,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:19:45,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45" (1/1) ... [2024-06-27 18:19:45,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45" (1/1) ... [2024-06-27 18:19:45,899 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45" (1/1) ... [2024-06-27 18:19:45,923 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:19:45,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45" (1/1) ... [2024-06-27 18:19:45,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45" (1/1) ... [2024-06-27 18:19:45,930 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45" (1/1) ... [2024-06-27 18:19:45,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45" (1/1) ... [2024-06-27 18:19:45,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45" (1/1) ... [2024-06-27 18:19:45,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45" (1/1) ... [2024-06-27 18:19:45,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:19:45,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:19:45,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:19:45,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:19:45,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45" (1/1) ... [2024-06-27 18:19:45,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:19:45,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:19:45,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:19:45,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:19:45,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:19:45,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:19:45,998 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:19:45,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:19:45,998 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:19:45,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:19:45,999 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:19:45,999 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:19:45,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:19:45,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:19:45,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:19:45,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:19:46,001 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:19:46,120 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:19:46,122 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:19:46,462 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:19:46,462 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:19:46,600 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:19:46,600 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:19:46,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:19:46 BoogieIcfgContainer [2024-06-27 18:19:46,601 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:19:46,603 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:19:46,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:19:46,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:19:46,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:19:43" (1/4) ... [2024-06-27 18:19:46,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7768ed31 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:19:46, skipping insertion in model container [2024-06-27 18:19:46,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:19:45" (2/4) ... [2024-06-27 18:19:46,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7768ed31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:19:46, skipping insertion in model container [2024-06-27 18:19:46,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:19:45" (3/4) ... [2024-06-27 18:19:46,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7768ed31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:19:46, skipping insertion in model container [2024-06-27 18:19:46,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:19:46" (4/4) ... [2024-06-27 18:19:46,610 INFO L112 eAbstractionObserver]: Analyzing ICFG mix016.oepc.i [2024-06-27 18:19:46,624 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:19:46,624 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:19:46,624 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:19:46,660 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:19:46,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:19:46,717 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 18:19:46,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:19:46,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 18:19:46,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:19:46,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 18:19:46,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:19:46,743 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@35b94226, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:19:46,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:19:46,748 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:19:46,748 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:19:46,748 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:19:46,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:46,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:19:46,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:46,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:46,795 INFO L85 PathProgramCache]: Analyzing trace with hash 358158408, now seen corresponding path program 1 times [2024-06-27 18:19:46,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:46,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765395430] [2024-06-27 18:19:46,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:46,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:47,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:47,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765395430] [2024-06-27 18:19:47,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765395430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:47,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:47,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:19:47,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206221781] [2024-06-27 18:19:47,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:47,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:19:47,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:47,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:19:47,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:19:47,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 18:19:47,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:47,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:47,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 18:19:47,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:48,295 INFO L124 PetriNetUnfolderBase]: 3136/5236 cut-off events. [2024-06-27 18:19:48,295 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-27 18:19:48,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9853 conditions, 5236 events. 3136/5236 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 33659 event pairs, 2366 based on Foata normal form. 151/4923 useless extension candidates. Maximal degree in co-relation 9841. Up to 4526 conditions per place. [2024-06-27 18:19:48,362 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 40 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 18:19:48,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 221 flow [2024-06-27 18:19:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:19:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:19:48,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-27 18:19:48,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6950354609929078 [2024-06-27 18:19:48,373 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 98 transitions. [2024-06-27 18:19:48,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 221 flow [2024-06-27 18:19:48,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:19:48,380 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-27 18:19:48,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-27 18:19:48,385 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 18:19:48,385 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-27 18:19:48,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:48,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:48,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:19:48,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:19:48,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:48,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:48,387 INFO L85 PathProgramCache]: Analyzing trace with hash 358159564, now seen corresponding path program 1 times [2024-06-27 18:19:48,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:48,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797850179] [2024-06-27 18:19:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:48,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:48,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:48,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797850179] [2024-06-27 18:19:48,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797850179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:48,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:48,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:19:48,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184826720] [2024-06-27 18:19:48,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:48,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:19:48,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:48,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:19:48,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:19:48,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2024-06-27 18:19:48,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:48,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:48,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2024-06-27 18:19:48,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:48,718 INFO L124 PetriNetUnfolderBase]: 950/1800 cut-off events. [2024-06-27 18:19:48,718 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-27 18:19:48,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 1800 events. 950/1800 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11902 event pairs, 463 based on Foata normal form. 0/1695 useless extension candidates. Maximal degree in co-relation 3490. Up to 1207 conditions per place. [2024-06-27 18:19:48,726 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 35 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2024-06-27 18:19:48,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 232 flow [2024-06-27 18:19:48,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:19:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:19:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-06-27 18:19:48,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7801418439716312 [2024-06-27 18:19:48,728 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 3 states and 110 transitions. [2024-06-27 18:19:48,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 232 flow [2024-06-27 18:19:48,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:19:48,731 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 122 flow [2024-06-27 18:19:48,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-27 18:19:48,731 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 18:19:48,732 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 122 flow [2024-06-27 18:19:48,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:48,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:48,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:48,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:19:48,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:48,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:48,733 INFO L85 PathProgramCache]: Analyzing trace with hash 592895110, now seen corresponding path program 1 times [2024-06-27 18:19:48,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:48,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067052306] [2024-06-27 18:19:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:49,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:49,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067052306] [2024-06-27 18:19:49,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067052306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:49,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:49,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:19:49,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405184716] [2024-06-27 18:19:49,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:49,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:19:49,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:49,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:19:49,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:19:49,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 18:19:49,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:49,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:49,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 18:19:49,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:49,627 INFO L124 PetriNetUnfolderBase]: 2578/4273 cut-off events. [2024-06-27 18:19:49,628 INFO L125 PetriNetUnfolderBase]: For 1094/1094 co-relation queries the response was YES. [2024-06-27 18:19:49,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9128 conditions, 4273 events. 2578/4273 cut-off events. For 1094/1094 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 26210 event pairs, 1575 based on Foata normal form. 3/4105 useless extension candidates. Maximal degree in co-relation 9115. Up to 3717 conditions per place. [2024-06-27 18:19:49,646 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 48 selfloop transitions, 8 changer transitions 2/71 dead transitions. [2024-06-27 18:19:49,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 310 flow [2024-06-27 18:19:49,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:19:49,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:19:49,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-27 18:19:49,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.648936170212766 [2024-06-27 18:19:49,648 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 122 flow. Second operand 4 states and 122 transitions. [2024-06-27 18:19:49,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 310 flow [2024-06-27 18:19:49,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:19:49,650 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 183 flow [2024-06-27 18:19:49,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-27 18:19:49,651 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-27 18:19:49,651 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 183 flow [2024-06-27 18:19:49,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:49,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:49,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:49,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:19:49,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:49,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:49,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1458398011, now seen corresponding path program 1 times [2024-06-27 18:19:49,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:49,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823280396] [2024-06-27 18:19:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:49,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:50,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:50,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823280396] [2024-06-27 18:19:50,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823280396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:50,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:50,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:19:50,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250332114] [2024-06-27 18:19:50,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:50,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:19:50,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:50,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:19:50,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:19:50,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 18:19:50,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:50,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:50,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 18:19:50,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:50,884 INFO L124 PetriNetUnfolderBase]: 2687/4170 cut-off events. [2024-06-27 18:19:50,884 INFO L125 PetriNetUnfolderBase]: For 1946/1946 co-relation queries the response was YES. [2024-06-27 18:19:50,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10047 conditions, 4170 events. 2687/4170 cut-off events. For 1946/1946 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23916 event pairs, 1060 based on Foata normal form. 3/4117 useless extension candidates. Maximal degree in co-relation 10032. Up to 3824 conditions per place. [2024-06-27 18:19:50,907 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 68 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-27 18:19:50,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 101 transitions, 519 flow [2024-06-27 18:19:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:19:50,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:19:50,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-06-27 18:19:50,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-06-27 18:19:50,909 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 183 flow. Second operand 6 states and 174 transitions. [2024-06-27 18:19:50,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 101 transitions, 519 flow [2024-06-27 18:19:50,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 502 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 18:19:50,912 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 301 flow [2024-06-27 18:19:50,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-06-27 18:19:50,913 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-06-27 18:19:50,913 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 301 flow [2024-06-27 18:19:50,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:50,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:50,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:50,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:19:50,914 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:50,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:50,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2034303590, now seen corresponding path program 1 times [2024-06-27 18:19:50,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:50,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094465070] [2024-06-27 18:19:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:50,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:51,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:51,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094465070] [2024-06-27 18:19:51,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094465070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:51,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:51,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:19:51,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877422041] [2024-06-27 18:19:51,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:51,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:19:51,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:19:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:19:51,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 18:19:51,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 301 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:51,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:51,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 18:19:51,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:52,403 INFO L124 PetriNetUnfolderBase]: 2678/4157 cut-off events. [2024-06-27 18:19:52,403 INFO L125 PetriNetUnfolderBase]: For 4056/4056 co-relation queries the response was YES. [2024-06-27 18:19:52,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11236 conditions, 4157 events. 2678/4157 cut-off events. For 4056/4056 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23910 event pairs, 774 based on Foata normal form. 6/4106 useless extension candidates. Maximal degree in co-relation 11217. Up to 3767 conditions per place. [2024-06-27 18:19:52,427 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 75 selfloop transitions, 23 changer transitions 0/110 dead transitions. [2024-06-27 18:19:52,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 110 transitions, 625 flow [2024-06-27 18:19:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:19:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:19:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-27 18:19:52,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601823708206687 [2024-06-27 18:19:52,430 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 301 flow. Second operand 7 states and 198 transitions. [2024-06-27 18:19:52,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 110 transitions, 625 flow [2024-06-27 18:19:52,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 110 transitions, 602 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 18:19:52,439 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 343 flow [2024-06-27 18:19:52,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-27 18:19:52,440 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-06-27 18:19:52,444 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 343 flow [2024-06-27 18:19:52,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:52,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:52,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:52,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:19:52,445 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:52,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:52,446 INFO L85 PathProgramCache]: Analyzing trace with hash 963647835, now seen corresponding path program 1 times [2024-06-27 18:19:52,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:52,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894391940] [2024-06-27 18:19:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:52,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:52,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:52,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894391940] [2024-06-27 18:19:52,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894391940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:52,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:52,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:19:52,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054740351] [2024-06-27 18:19:52,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:52,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:19:52,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:52,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:19:52,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:19:52,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:19:52,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:52,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:52,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:19:52,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:53,623 INFO L124 PetriNetUnfolderBase]: 3112/5288 cut-off events. [2024-06-27 18:19:53,623 INFO L125 PetriNetUnfolderBase]: For 6693/6693 co-relation queries the response was YES. [2024-06-27 18:19:53,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14026 conditions, 5288 events. 3112/5288 cut-off events. For 6693/6693 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 33818 event pairs, 1299 based on Foata normal form. 4/5140 useless extension candidates. Maximal degree in co-relation 14004. Up to 4453 conditions per place. [2024-06-27 18:19:53,651 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 64 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2024-06-27 18:19:53,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 555 flow [2024-06-27 18:19:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:19:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:19:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 18:19:53,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-27 18:19:53,656 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 343 flow. Second operand 5 states and 123 transitions. [2024-06-27 18:19:53,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 555 flow [2024-06-27 18:19:53,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 500 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:53,662 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 341 flow [2024-06-27 18:19:53,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-27 18:19:53,665 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-06-27 18:19:53,665 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 341 flow [2024-06-27 18:19:53,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:53,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:53,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:53,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:19:53,666 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:53,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:53,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1159839837, now seen corresponding path program 1 times [2024-06-27 18:19:53,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:53,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992686614] [2024-06-27 18:19:53,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:53,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:54,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:54,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:54,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992686614] [2024-06-27 18:19:54,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992686614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:54,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:54,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:19:54,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212600421] [2024-06-27 18:19:54,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:54,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:19:54,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:54,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:19:54,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:19:54,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:19:54,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:54,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:54,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:19:54,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:54,930 INFO L124 PetriNetUnfolderBase]: 3191/5305 cut-off events. [2024-06-27 18:19:54,931 INFO L125 PetriNetUnfolderBase]: For 8637/8637 co-relation queries the response was YES. [2024-06-27 18:19:54,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15017 conditions, 5305 events. 3191/5305 cut-off events. For 8637/8637 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 32968 event pairs, 1084 based on Foata normal form. 4/5154 useless extension candidates. Maximal degree in co-relation 14993. Up to 4493 conditions per place. [2024-06-27 18:19:54,962 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 81 selfloop transitions, 18 changer transitions 0/109 dead transitions. [2024-06-27 18:19:54,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 109 transitions, 709 flow [2024-06-27 18:19:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:19:54,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:19:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 18:19:54,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-27 18:19:54,964 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 341 flow. Second operand 6 states and 154 transitions. [2024-06-27 18:19:54,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 109 transitions, 709 flow [2024-06-27 18:19:54,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 109 transitions, 670 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:19:54,970 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 450 flow [2024-06-27 18:19:54,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=450, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2024-06-27 18:19:54,971 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2024-06-27 18:19:54,971 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 450 flow [2024-06-27 18:19:54,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:54,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:54,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:54,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:19:54,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:54,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:54,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1245848499, now seen corresponding path program 2 times [2024-06-27 18:19:54,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:54,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59899531] [2024-06-27 18:19:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:54,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:55,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:55,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59899531] [2024-06-27 18:19:55,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59899531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:55,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:55,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:19:55,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849766943] [2024-06-27 18:19:55,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:55,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:19:55,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:55,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:19:55,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:19:55,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:19:55,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 450 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:55,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:55,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:19:55,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:56,178 INFO L124 PetriNetUnfolderBase]: 3181/5394 cut-off events. [2024-06-27 18:19:56,178 INFO L125 PetriNetUnfolderBase]: For 11894/11894 co-relation queries the response was YES. [2024-06-27 18:19:56,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16508 conditions, 5394 events. 3181/5394 cut-off events. For 11894/11894 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 34597 event pairs, 1267 based on Foata normal form. 4/5243 useless extension candidates. Maximal degree in co-relation 16481. Up to 4540 conditions per place. [2024-06-27 18:19:56,204 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 78 selfloop transitions, 13 changer transitions 0/101 dead transitions. [2024-06-27 18:19:56,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 101 transitions, 694 flow [2024-06-27 18:19:56,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:19:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:19:56,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:19:56,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-27 18:19:56,205 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 450 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:19:56,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 101 transitions, 694 flow [2024-06-27 18:19:56,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 670 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-27 18:19:56,213 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 460 flow [2024-06-27 18:19:56,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=460, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2024-06-27 18:19:56,213 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2024-06-27 18:19:56,213 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 460 flow [2024-06-27 18:19:56,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:56,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:56,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:56,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:19:56,214 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:56,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:56,215 INFO L85 PathProgramCache]: Analyzing trace with hash 464893706, now seen corresponding path program 1 times [2024-06-27 18:19:56,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:56,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888324697] [2024-06-27 18:19:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:56,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:56,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:56,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888324697] [2024-06-27 18:19:56,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888324697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:56,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:56,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:19:56,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98264469] [2024-06-27 18:19:56,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:56,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:19:56,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:56,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:19:56,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:19:57,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:19:57,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 460 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:57,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:57,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:19:57,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:57,754 INFO L124 PetriNetUnfolderBase]: 3227/5346 cut-off events. [2024-06-27 18:19:57,754 INFO L125 PetriNetUnfolderBase]: For 13185/13185 co-relation queries the response was YES. [2024-06-27 18:19:57,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16849 conditions, 5346 events. 3227/5346 cut-off events. For 13185/13185 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 33138 event pairs, 1096 based on Foata normal form. 4/5195 useless extension candidates. Maximal degree in co-relation 16819. Up to 4571 conditions per place. [2024-06-27 18:19:57,777 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 95 selfloop transitions, 15 changer transitions 0/120 dead transitions. [2024-06-27 18:19:57,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 120 transitions, 814 flow [2024-06-27 18:19:57,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:19:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:19:57,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:19:57,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 18:19:57,779 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 460 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:19:57,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 120 transitions, 814 flow [2024-06-27 18:19:57,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 120 transitions, 781 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:19:57,786 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 497 flow [2024-06-27 18:19:57,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=497, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2024-06-27 18:19:57,787 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 27 predicate places. [2024-06-27 18:19:57,787 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 497 flow [2024-06-27 18:19:57,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:57,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:57,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:57,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:19:57,788 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:57,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:57,788 INFO L85 PathProgramCache]: Analyzing trace with hash -201820702, now seen corresponding path program 2 times [2024-06-27 18:19:57,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:57,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563558135] [2024-06-27 18:19:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:57,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:58,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:58,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563558135] [2024-06-27 18:19:58,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563558135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:58,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:58,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:19:58,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290262796] [2024-06-27 18:19:58,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:58,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:19:58,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:58,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:19:58,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:19:58,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:19:58,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 497 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:58,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:58,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:19:58,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:59,233 INFO L124 PetriNetUnfolderBase]: 3306/5459 cut-off events. [2024-06-27 18:19:59,233 INFO L125 PetriNetUnfolderBase]: For 17056/17056 co-relation queries the response was YES. [2024-06-27 18:19:59,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18281 conditions, 5459 events. 3306/5459 cut-off events. For 17056/17056 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 33777 event pairs, 1042 based on Foata normal form. 4/5307 useless extension candidates. Maximal degree in co-relation 18251. Up to 4510 conditions per place. [2024-06-27 18:19:59,269 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 89 selfloop transitions, 28 changer transitions 0/127 dead transitions. [2024-06-27 18:19:59,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 127 transitions, 939 flow [2024-06-27 18:19:59,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:19:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:19:59,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 18:19:59,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501519756838906 [2024-06-27 18:19:59,271 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 497 flow. Second operand 7 states and 181 transitions. [2024-06-27 18:19:59,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 127 transitions, 939 flow [2024-06-27 18:19:59,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 127 transitions, 887 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:59,283 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 579 flow [2024-06-27 18:19:59,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=579, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2024-06-27 18:19:59,284 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-06-27 18:19:59,284 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 579 flow [2024-06-27 18:19:59,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:59,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:59,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:59,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:19:59,285 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:59,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:59,285 INFO L85 PathProgramCache]: Analyzing trace with hash 33403268, now seen corresponding path program 3 times [2024-06-27 18:19:59,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:59,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981805697] [2024-06-27 18:19:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:59,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:59,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:59,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981805697] [2024-06-27 18:19:59,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981805697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:59,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:59,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:19:59,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886511964] [2024-06-27 18:19:59,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:59,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:19:59,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:59,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:19:59,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:00,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:00,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 579 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:00,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:00,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:00,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:00,648 INFO L124 PetriNetUnfolderBase]: 3296/5554 cut-off events. [2024-06-27 18:20:00,648 INFO L125 PetriNetUnfolderBase]: For 21239/21239 co-relation queries the response was YES. [2024-06-27 18:20:00,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19161 conditions, 5554 events. 3296/5554 cut-off events. For 21239/21239 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 35432 event pairs, 1265 based on Foata normal form. 4/5400 useless extension candidates. Maximal degree in co-relation 19130. Up to 4657 conditions per place. [2024-06-27 18:20:00,680 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 93 selfloop transitions, 16 changer transitions 0/119 dead transitions. [2024-06-27 18:20:00,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 885 flow [2024-06-27 18:20:00,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:20:00,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167173252279635 [2024-06-27 18:20:00,681 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 579 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:20:00,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 885 flow [2024-06-27 18:20:00,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 119 transitions, 827 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:00,700 INFO L231 Difference]: Finished difference. Result has 86 places, 86 transitions, 561 flow [2024-06-27 18:20:00,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=561, PETRI_PLACES=86, PETRI_TRANSITIONS=86} [2024-06-27 18:20:00,701 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 33 predicate places. [2024-06-27 18:20:00,701 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 561 flow [2024-06-27 18:20:00,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:00,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:00,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:00,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:20:00,702 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:00,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:00,702 INFO L85 PathProgramCache]: Analyzing trace with hash -388161237, now seen corresponding path program 1 times [2024-06-27 18:20:00,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:00,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120806503] [2024-06-27 18:20:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:00,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:01,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:01,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120806503] [2024-06-27 18:20:01,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120806503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:01,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:01,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:01,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798568082] [2024-06-27 18:20:01,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:01,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:01,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:01,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:01,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:01,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:01,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 561 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:01,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:01,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:01,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:02,602 INFO L124 PetriNetUnfolderBase]: 4032/6713 cut-off events. [2024-06-27 18:20:02,603 INFO L125 PetriNetUnfolderBase]: For 26053/26053 co-relation queries the response was YES. [2024-06-27 18:20:02,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22683 conditions, 6713 events. 4032/6713 cut-off events. For 26053/26053 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 42804 event pairs, 1571 based on Foata normal form. 4/6522 useless extension candidates. Maximal degree in co-relation 22650. Up to 5691 conditions per place. [2024-06-27 18:20:02,640 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 100 selfloop transitions, 20 changer transitions 0/129 dead transitions. [2024-06-27 18:20:02,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 959 flow [2024-06-27 18:20:02,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 18:20:02,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-06-27 18:20:02,651 INFO L175 Difference]: Start difference. First operand has 86 places, 86 transitions, 561 flow. Second operand 7 states and 165 transitions. [2024-06-27 18:20:02,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 959 flow [2024-06-27 18:20:02,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 129 transitions, 900 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:02,671 INFO L231 Difference]: Finished difference. Result has 88 places, 93 transitions, 624 flow [2024-06-27 18:20:02,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=624, PETRI_PLACES=88, PETRI_TRANSITIONS=93} [2024-06-27 18:20:02,672 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2024-06-27 18:20:02,672 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 93 transitions, 624 flow [2024-06-27 18:20:02,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:02,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:02,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:02,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:20:02,673 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:02,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:02,673 INFO L85 PathProgramCache]: Analyzing trace with hash -286157397, now seen corresponding path program 1 times [2024-06-27 18:20:02,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:02,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078878021] [2024-06-27 18:20:02,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:02,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:03,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:03,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078878021] [2024-06-27 18:20:03,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078878021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:03,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:03,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:20:03,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570127496] [2024-06-27 18:20:03,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:03,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:20:03,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:03,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:20:03,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:20:03,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:03,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 93 transitions, 624 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:03,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:03,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:03,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:03,963 INFO L124 PetriNetUnfolderBase]: 4312/7154 cut-off events. [2024-06-27 18:20:03,964 INFO L125 PetriNetUnfolderBase]: For 32783/32787 co-relation queries the response was YES. [2024-06-27 18:20:03,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24873 conditions, 7154 events. 4312/7154 cut-off events. For 32783/32787 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 46131 event pairs, 1853 based on Foata normal form. 5/6909 useless extension candidates. Maximal degree in co-relation 24838. Up to 6180 conditions per place. [2024-06-27 18:20:04,000 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 87 selfloop transitions, 11 changer transitions 0/111 dead transitions. [2024-06-27 18:20:04,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 111 transitions, 878 flow [2024-06-27 18:20:04,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:20:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:20:04,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-27 18:20:04,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-06-27 18:20:04,002 INFO L175 Difference]: Start difference. First operand has 88 places, 93 transitions, 624 flow. Second operand 5 states and 114 transitions. [2024-06-27 18:20:04,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 111 transitions, 878 flow [2024-06-27 18:20:04,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 111 transitions, 823 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:04,018 INFO L231 Difference]: Finished difference. Result has 89 places, 96 transitions, 624 flow [2024-06-27 18:20:04,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=624, PETRI_PLACES=89, PETRI_TRANSITIONS=96} [2024-06-27 18:20:04,019 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2024-06-27 18:20:04,019 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 96 transitions, 624 flow [2024-06-27 18:20:04,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:04,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:04,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:04,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:20:04,020 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:04,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:04,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2089188516, now seen corresponding path program 1 times [2024-06-27 18:20:04,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:04,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901870267] [2024-06-27 18:20:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:04,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:04,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:04,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901870267] [2024-06-27 18:20:04,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901870267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:04,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:04,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:04,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446244341] [2024-06-27 18:20:04,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:04,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:04,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:04,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:05,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:05,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 96 transitions, 624 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:05,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:05,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:05,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:06,028 INFO L124 PetriNetUnfolderBase]: 4185/6443 cut-off events. [2024-06-27 18:20:06,028 INFO L125 PetriNetUnfolderBase]: For 36914/36916 co-relation queries the response was YES. [2024-06-27 18:20:06,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25076 conditions, 6443 events. 4185/6443 cut-off events. For 36914/36916 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 38113 event pairs, 1159 based on Foata normal form. 4/6364 useless extension candidates. Maximal degree in co-relation 25040. Up to 5734 conditions per place. [2024-06-27 18:20:06,067 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 122 selfloop transitions, 35 changer transitions 0/169 dead transitions. [2024-06-27 18:20:06,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 169 transitions, 1266 flow [2024-06-27 18:20:06,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 18:20:06,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-06-27 18:20:06,069 INFO L175 Difference]: Start difference. First operand has 89 places, 96 transitions, 624 flow. Second operand 9 states and 233 transitions. [2024-06-27 18:20:06,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 169 transitions, 1266 flow [2024-06-27 18:20:06,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 169 transitions, 1235 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:06,096 INFO L231 Difference]: Finished difference. Result has 96 places, 105 transitions, 795 flow [2024-06-27 18:20:06,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=795, PETRI_PLACES=96, PETRI_TRANSITIONS=105} [2024-06-27 18:20:06,097 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2024-06-27 18:20:06,097 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 105 transitions, 795 flow [2024-06-27 18:20:06,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:06,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:06,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:06,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:20:06,098 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:06,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:06,098 INFO L85 PathProgramCache]: Analyzing trace with hash -2089098306, now seen corresponding path program 2 times [2024-06-27 18:20:06,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:06,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315000126] [2024-06-27 18:20:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:06,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:06,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:06,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315000126] [2024-06-27 18:20:06,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315000126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:06,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:06,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:06,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658612359] [2024-06-27 18:20:06,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:06,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:06,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:06,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:07,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:07,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 105 transitions, 795 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:07,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:07,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:07,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:08,017 INFO L124 PetriNetUnfolderBase]: 4208/6846 cut-off events. [2024-06-27 18:20:08,017 INFO L125 PetriNetUnfolderBase]: For 44384/44390 co-relation queries the response was YES. [2024-06-27 18:20:08,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27023 conditions, 6846 events. 4208/6846 cut-off events. For 44384/44390 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 43389 event pairs, 1309 based on Foata normal form. 4/6632 useless extension candidates. Maximal degree in co-relation 26985. Up to 5855 conditions per place. [2024-06-27 18:20:08,053 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 127 selfloop transitions, 18 changer transitions 0/157 dead transitions. [2024-06-27 18:20:08,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 157 transitions, 1259 flow [2024-06-27 18:20:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:08,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:20:08,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-27 18:20:08,054 INFO L175 Difference]: Start difference. First operand has 96 places, 105 transitions, 795 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:20:08,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 157 transitions, 1259 flow [2024-06-27 18:20:08,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 157 transitions, 1136 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:08,087 INFO L231 Difference]: Finished difference. Result has 100 places, 108 transitions, 762 flow [2024-06-27 18:20:08,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=762, PETRI_PLACES=100, PETRI_TRANSITIONS=108} [2024-06-27 18:20:08,088 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2024-06-27 18:20:08,088 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 108 transitions, 762 flow [2024-06-27 18:20:08,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:08,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:08,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:08,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:20:08,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:08,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:08,089 INFO L85 PathProgramCache]: Analyzing trace with hash -328734312, now seen corresponding path program 3 times [2024-06-27 18:20:08,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:08,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633171817] [2024-06-27 18:20:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:08,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:08,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:08,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633171817] [2024-06-27 18:20:08,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633171817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:08,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:08,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:08,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906113497] [2024-06-27 18:20:08,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:08,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:08,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:08,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:08,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:09,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:09,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 108 transitions, 762 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:09,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:09,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:09,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:09,991 INFO L124 PetriNetUnfolderBase]: 4218/6843 cut-off events. [2024-06-27 18:20:09,991 INFO L125 PetriNetUnfolderBase]: For 47631/47641 co-relation queries the response was YES. [2024-06-27 18:20:10,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27272 conditions, 6843 events. 4218/6843 cut-off events. For 47631/47641 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 43196 event pairs, 1192 based on Foata normal form. 4/6622 useless extension candidates. Maximal degree in co-relation 27232. Up to 5676 conditions per place. [2024-06-27 18:20:10,043 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 114 selfloop transitions, 33 changer transitions 0/159 dead transitions. [2024-06-27 18:20:10,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 159 transitions, 1230 flow [2024-06-27 18:20:10,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:10,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:20:10,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 18:20:10,045 INFO L175 Difference]: Start difference. First operand has 100 places, 108 transitions, 762 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:20:10,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 159 transitions, 1230 flow [2024-06-27 18:20:10,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 159 transitions, 1194 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:10,082 INFO L231 Difference]: Finished difference. Result has 102 places, 111 transitions, 846 flow [2024-06-27 18:20:10,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=846, PETRI_PLACES=102, PETRI_TRANSITIONS=111} [2024-06-27 18:20:10,082 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2024-06-27 18:20:10,083 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 111 transitions, 846 flow [2024-06-27 18:20:10,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:10,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:10,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:10,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:20:10,083 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:10,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:10,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1293400154, now seen corresponding path program 1 times [2024-06-27 18:20:10,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:10,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429223447] [2024-06-27 18:20:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:10,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:10,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:10,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429223447] [2024-06-27 18:20:10,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429223447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:10,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:10,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:10,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283169422] [2024-06-27 18:20:10,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:10,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:10,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:10,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:10,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 111 transitions, 846 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:10,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:10,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:10,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:11,963 INFO L124 PetriNetUnfolderBase]: 4560/7257 cut-off events. [2024-06-27 18:20:11,963 INFO L125 PetriNetUnfolderBase]: For 56781/56781 co-relation queries the response was YES. [2024-06-27 18:20:11,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30278 conditions, 7257 events. 4560/7257 cut-off events. For 56781/56781 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 44829 event pairs, 1692 based on Foata normal form. 2/7089 useless extension candidates. Maximal degree in co-relation 30237. Up to 6373 conditions per place. [2024-06-27 18:20:12,012 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 120 selfloop transitions, 23 changer transitions 0/153 dead transitions. [2024-06-27 18:20:12,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 153 transitions, 1315 flow [2024-06-27 18:20:12,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:20:12,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-27 18:20:12,013 INFO L175 Difference]: Start difference. First operand has 102 places, 111 transitions, 846 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:20:12,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 153 transitions, 1315 flow [2024-06-27 18:20:12,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 153 transitions, 1213 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:12,055 INFO L231 Difference]: Finished difference. Result has 105 places, 123 transitions, 944 flow [2024-06-27 18:20:12,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=944, PETRI_PLACES=105, PETRI_TRANSITIONS=123} [2024-06-27 18:20:12,055 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 52 predicate places. [2024-06-27 18:20:12,055 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 123 transitions, 944 flow [2024-06-27 18:20:12,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:12,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:12,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:12,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:20:12,056 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:12,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:12,056 INFO L85 PathProgramCache]: Analyzing trace with hash -184843782, now seen corresponding path program 4 times [2024-06-27 18:20:12,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:12,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307772061] [2024-06-27 18:20:12,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:12,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:12,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:12,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307772061] [2024-06-27 18:20:12,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307772061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:12,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:12,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:12,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778514616] [2024-06-27 18:20:12,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:12,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:12,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:12,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:12,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:12,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:12,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 123 transitions, 944 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:12,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:12,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:12,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:13,888 INFO L124 PetriNetUnfolderBase]: 4299/6903 cut-off events. [2024-06-27 18:20:13,888 INFO L125 PetriNetUnfolderBase]: For 61795/61795 co-relation queries the response was YES. [2024-06-27 18:20:13,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29799 conditions, 6903 events. 4299/6903 cut-off events. For 61795/61795 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 43805 event pairs, 1393 based on Foata normal form. 6/6744 useless extension candidates. Maximal degree in co-relation 29755. Up to 5778 conditions per place. [2024-06-27 18:20:13,938 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 125 selfloop transitions, 41 changer transitions 0/179 dead transitions. [2024-06-27 18:20:13,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 179 transitions, 1624 flow [2024-06-27 18:20:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:13,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 18:20:13,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:20:13,940 INFO L175 Difference]: Start difference. First operand has 105 places, 123 transitions, 944 flow. Second operand 8 states and 200 transitions. [2024-06-27 18:20:13,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 179 transitions, 1624 flow [2024-06-27 18:20:13,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 179 transitions, 1569 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:13,985 INFO L231 Difference]: Finished difference. Result has 112 places, 132 transitions, 1171 flow [2024-06-27 18:20:13,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1171, PETRI_PLACES=112, PETRI_TRANSITIONS=132} [2024-06-27 18:20:13,986 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2024-06-27 18:20:13,986 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 132 transitions, 1171 flow [2024-06-27 18:20:13,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:13,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:13,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:13,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:20:13,986 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:13,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:13,987 INFO L85 PathProgramCache]: Analyzing trace with hash -280943330, now seen corresponding path program 1 times [2024-06-27 18:20:13,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:13,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532618518] [2024-06-27 18:20:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:13,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:14,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:14,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532618518] [2024-06-27 18:20:14,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532618518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:14,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:14,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:14,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102582570] [2024-06-27 18:20:14,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:14,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:14,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:14,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:14,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:14,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:14,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 132 transitions, 1171 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:14,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:14,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:14,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:15,428 INFO L124 PetriNetUnfolderBase]: 4655/7195 cut-off events. [2024-06-27 18:20:15,428 INFO L125 PetriNetUnfolderBase]: For 75376/75440 co-relation queries the response was YES. [2024-06-27 18:20:15,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32845 conditions, 7195 events. 4655/7195 cut-off events. For 75376/75440 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 42893 event pairs, 1842 based on Foata normal form. 21/7072 useless extension candidates. Maximal degree in co-relation 32798. Up to 6592 conditions per place. [2024-06-27 18:20:15,479 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 127 selfloop transitions, 14 changer transitions 0/157 dead transitions. [2024-06-27 18:20:15,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 157 transitions, 1537 flow [2024-06-27 18:20:15,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:15,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:15,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 18:20:15,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-27 18:20:15,480 INFO L175 Difference]: Start difference. First operand has 112 places, 132 transitions, 1171 flow. Second operand 6 states and 136 transitions. [2024-06-27 18:20:15,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 157 transitions, 1537 flow [2024-06-27 18:20:15,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 157 transitions, 1428 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:15,547 INFO L231 Difference]: Finished difference. Result has 115 places, 135 transitions, 1126 flow [2024-06-27 18:20:15,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1126, PETRI_PLACES=115, PETRI_TRANSITIONS=135} [2024-06-27 18:20:15,547 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 62 predicate places. [2024-06-27 18:20:15,547 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 135 transitions, 1126 flow [2024-06-27 18:20:15,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:15,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:15,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:15,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:20:15,548 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:15,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:15,548 INFO L85 PathProgramCache]: Analyzing trace with hash 86169931, now seen corresponding path program 1 times [2024-06-27 18:20:15,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:15,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023862688] [2024-06-27 18:20:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:15,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:16,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:16,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023862688] [2024-06-27 18:20:16,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023862688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:16,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:16,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:16,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986037243] [2024-06-27 18:20:16,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:16,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:16,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:16,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:16,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:16,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 135 transitions, 1126 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:16,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:16,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:16,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:17,869 INFO L124 PetriNetUnfolderBase]: 4758/7518 cut-off events. [2024-06-27 18:20:17,870 INFO L125 PetriNetUnfolderBase]: For 91355/91359 co-relation queries the response was YES. [2024-06-27 18:20:17,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36358 conditions, 7518 events. 4758/7518 cut-off events. For 91355/91359 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 47117 event pairs, 1115 based on Foata normal form. 20/7358 useless extension candidates. Maximal degree in co-relation 36309. Up to 6050 conditions per place. [2024-06-27 18:20:17,933 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 185 selfloop transitions, 27 changer transitions 0/225 dead transitions. [2024-06-27 18:20:17,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 225 transitions, 1999 flow [2024-06-27 18:20:17,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-27 18:20:17,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2024-06-27 18:20:17,935 INFO L175 Difference]: Start difference. First operand has 115 places, 135 transitions, 1126 flow. Second operand 10 states and 262 transitions. [2024-06-27 18:20:17,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 225 transitions, 1999 flow [2024-06-27 18:20:18,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 225 transitions, 1957 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:18,010 INFO L231 Difference]: Finished difference. Result has 123 places, 144 transitions, 1274 flow [2024-06-27 18:20:18,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1274, PETRI_PLACES=123, PETRI_TRANSITIONS=144} [2024-06-27 18:20:18,010 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-06-27 18:20:18,010 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 144 transitions, 1274 flow [2024-06-27 18:20:18,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:18,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:18,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:18,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:20:18,011 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:18,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:18,011 INFO L85 PathProgramCache]: Analyzing trace with hash -340333421, now seen corresponding path program 2 times [2024-06-27 18:20:18,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:18,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006025640] [2024-06-27 18:20:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:18,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:18,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:18,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006025640] [2024-06-27 18:20:18,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006025640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:18,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:18,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:18,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897420982] [2024-06-27 18:20:18,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:18,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:18,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:18,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:18,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:19,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:19,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 144 transitions, 1274 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:19,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:19,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:19,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:20,382 INFO L124 PetriNetUnfolderBase]: 4930/7543 cut-off events. [2024-06-27 18:20:20,382 INFO L125 PetriNetUnfolderBase]: For 105779/105783 co-relation queries the response was YES. [2024-06-27 18:20:20,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38939 conditions, 7543 events. 4930/7543 cut-off events. For 105779/105783 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 45866 event pairs, 1259 based on Foata normal form. 24/7491 useless extension candidates. Maximal degree in co-relation 38887. Up to 6590 conditions per place. [2024-06-27 18:20:20,432 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 163 selfloop transitions, 45 changer transitions 0/221 dead transitions. [2024-06-27 18:20:20,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 221 transitions, 1991 flow [2024-06-27 18:20:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-27 18:20:20,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548936170212766 [2024-06-27 18:20:20,434 INFO L175 Difference]: Start difference. First operand has 123 places, 144 transitions, 1274 flow. Second operand 10 states and 258 transitions. [2024-06-27 18:20:20,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 221 transitions, 1991 flow [2024-06-27 18:20:20,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 221 transitions, 1958 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:20,522 INFO L231 Difference]: Finished difference. Result has 128 places, 146 transitions, 1406 flow [2024-06-27 18:20:20,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1406, PETRI_PLACES=128, PETRI_TRANSITIONS=146} [2024-06-27 18:20:20,522 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 75 predicate places. [2024-06-27 18:20:20,522 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 146 transitions, 1406 flow [2024-06-27 18:20:20,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:20,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:20,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:20,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:20:20,523 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:20,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash -680599593, now seen corresponding path program 3 times [2024-06-27 18:20:20,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:20,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854832935] [2024-06-27 18:20:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:20,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:21,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:21,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854832935] [2024-06-27 18:20:21,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854832935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:21,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:21,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:21,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651597819] [2024-06-27 18:20:21,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:21,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:21,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:21,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:21,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:21,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:21,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 146 transitions, 1406 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:21,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:21,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:21,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:22,899 INFO L124 PetriNetUnfolderBase]: 4888/7734 cut-off events. [2024-06-27 18:20:22,900 INFO L125 PetriNetUnfolderBase]: For 108213/108217 co-relation queries the response was YES. [2024-06-27 18:20:22,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38898 conditions, 7734 events. 4888/7734 cut-off events. For 108213/108217 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 49227 event pairs, 1409 based on Foata normal form. 28/7602 useless extension candidates. Maximal degree in co-relation 38844. Up to 6601 conditions per place. [2024-06-27 18:20:22,961 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 177 selfloop transitions, 19 changer transitions 0/209 dead transitions. [2024-06-27 18:20:22,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 209 transitions, 2014 flow [2024-06-27 18:20:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 18:20:22,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541371158392435 [2024-06-27 18:20:22,965 INFO L175 Difference]: Start difference. First operand has 128 places, 146 transitions, 1406 flow. Second operand 9 states and 229 transitions. [2024-06-27 18:20:22,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 209 transitions, 2014 flow [2024-06-27 18:20:23,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 209 transitions, 1908 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:23,076 INFO L231 Difference]: Finished difference. Result has 129 places, 146 transitions, 1346 flow [2024-06-27 18:20:23,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1346, PETRI_PLACES=129, PETRI_TRANSITIONS=146} [2024-06-27 18:20:23,076 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 76 predicate places. [2024-06-27 18:20:23,076 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 146 transitions, 1346 flow [2024-06-27 18:20:23,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:23,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:23,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:23,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:20:23,077 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:23,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:23,077 INFO L85 PathProgramCache]: Analyzing trace with hash -222245741, now seen corresponding path program 4 times [2024-06-27 18:20:23,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:23,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022174018] [2024-06-27 18:20:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:23,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:24,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:24,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022174018] [2024-06-27 18:20:24,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022174018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:24,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:24,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:24,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791224616] [2024-06-27 18:20:24,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:24,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:24,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:24,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:24,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:24,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:24,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 146 transitions, 1346 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:24,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:24,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:24,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:25,289 INFO L124 PetriNetUnfolderBase]: 5074/8030 cut-off events. [2024-06-27 18:20:25,289 INFO L125 PetriNetUnfolderBase]: For 117510/117514 co-relation queries the response was YES. [2024-06-27 18:20:25,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40659 conditions, 8030 events. 5074/8030 cut-off events. For 117510/117514 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 51403 event pairs, 1289 based on Foata normal form. 28/7903 useless extension candidates. Maximal degree in co-relation 40604. Up to 6653 conditions per place. [2024-06-27 18:20:25,358 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 159 selfloop transitions, 37 changer transitions 0/209 dead transitions. [2024-06-27 18:20:25,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 209 transitions, 1986 flow [2024-06-27 18:20:25,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:25,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:25,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 18:20:25,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484633569739953 [2024-06-27 18:20:25,360 INFO L175 Difference]: Start difference. First operand has 129 places, 146 transitions, 1346 flow. Second operand 9 states and 232 transitions. [2024-06-27 18:20:25,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 209 transitions, 1986 flow [2024-06-27 18:20:25,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 209 transitions, 1948 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:25,487 INFO L231 Difference]: Finished difference. Result has 131 places, 147 transitions, 1424 flow [2024-06-27 18:20:25,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1424, PETRI_PLACES=131, PETRI_TRANSITIONS=147} [2024-06-27 18:20:25,488 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2024-06-27 18:20:25,488 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 147 transitions, 1424 flow [2024-06-27 18:20:25,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:25,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:25,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:25,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:20:25,489 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:25,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:25,489 INFO L85 PathProgramCache]: Analyzing trace with hash -222061043, now seen corresponding path program 1 times [2024-06-27 18:20:25,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:25,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945752608] [2024-06-27 18:20:25,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:25,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:26,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:26,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945752608] [2024-06-27 18:20:26,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945752608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:26,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:26,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:26,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348876586] [2024-06-27 18:20:26,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:26,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:26,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:26,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:26,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:26,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:26,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 147 transitions, 1424 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:26,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:26,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:26,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:27,708 INFO L124 PetriNetUnfolderBase]: 5529/8719 cut-off events. [2024-06-27 18:20:27,709 INFO L125 PetriNetUnfolderBase]: For 128233/128240 co-relation queries the response was YES. [2024-06-27 18:20:27,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44401 conditions, 8719 events. 5529/8719 cut-off events. For 128233/128240 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 55160 event pairs, 1577 based on Foata normal form. 10/8531 useless extension candidates. Maximal degree in co-relation 44345. Up to 7719 conditions per place. [2024-06-27 18:20:27,776 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 161 selfloop transitions, 29 changer transitions 0/200 dead transitions. [2024-06-27 18:20:27,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 200 transitions, 2009 flow [2024-06-27 18:20:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:20:27,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-27 18:20:27,777 INFO L175 Difference]: Start difference. First operand has 131 places, 147 transitions, 1424 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:20:27,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 200 transitions, 2009 flow [2024-06-27 18:20:27,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 200 transitions, 1923 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:27,890 INFO L231 Difference]: Finished difference. Result has 133 places, 152 transitions, 1478 flow [2024-06-27 18:20:27,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1478, PETRI_PLACES=133, PETRI_TRANSITIONS=152} [2024-06-27 18:20:27,891 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 80 predicate places. [2024-06-27 18:20:27,891 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 152 transitions, 1478 flow [2024-06-27 18:20:27,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:27,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:27,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:27,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:20:27,891 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:27,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:27,891 INFO L85 PathProgramCache]: Analyzing trace with hash -131672471, now seen corresponding path program 1 times [2024-06-27 18:20:27,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:27,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409401248] [2024-06-27 18:20:27,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:27,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:28,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:28,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409401248] [2024-06-27 18:20:28,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409401248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:28,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:28,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047404319] [2024-06-27 18:20:28,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:28,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:28,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:28,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:28,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:28,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:28,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 152 transitions, 1478 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:28,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:28,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:28,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:29,541 INFO L124 PetriNetUnfolderBase]: 5660/8925 cut-off events. [2024-06-27 18:20:29,541 INFO L125 PetriNetUnfolderBase]: For 130803/130881 co-relation queries the response was YES. [2024-06-27 18:20:29,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44918 conditions, 8925 events. 5660/8925 cut-off events. For 130803/130881 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 56985 event pairs, 1902 based on Foata normal form. 18/8714 useless extension candidates. Maximal degree in co-relation 44860. Up to 8069 conditions per place. [2024-06-27 18:20:29,608 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 150 selfloop transitions, 20 changer transitions 0/188 dead transitions. [2024-06-27 18:20:29,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 188 transitions, 2022 flow [2024-06-27 18:20:29,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:29,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 18:20:29,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-27 18:20:29,609 INFO L175 Difference]: Start difference. First operand has 133 places, 152 transitions, 1478 flow. Second operand 6 states and 142 transitions. [2024-06-27 18:20:29,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 188 transitions, 2022 flow [2024-06-27 18:20:29,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 188 transitions, 1927 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:29,715 INFO L231 Difference]: Finished difference. Result has 135 places, 162 transitions, 1538 flow [2024-06-27 18:20:29,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1538, PETRI_PLACES=135, PETRI_TRANSITIONS=162} [2024-06-27 18:20:29,716 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 82 predicate places. [2024-06-27 18:20:29,716 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 162 transitions, 1538 flow [2024-06-27 18:20:29,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:29,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:29,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:29,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:20:29,717 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:29,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:29,717 INFO L85 PathProgramCache]: Analyzing trace with hash 373952499, now seen corresponding path program 5 times [2024-06-27 18:20:29,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:29,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933793483] [2024-06-27 18:20:29,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:29,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:30,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:30,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933793483] [2024-06-27 18:20:30,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933793483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:30,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:30,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:30,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056627358] [2024-06-27 18:20:30,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:30,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:30,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:30,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:30,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:30,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:20:30,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 162 transitions, 1538 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:30,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:30,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:20:30,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:31,843 INFO L124 PetriNetUnfolderBase]: 5313/8509 cut-off events. [2024-06-27 18:20:31,844 INFO L125 PetriNetUnfolderBase]: For 144909/144937 co-relation queries the response was YES. [2024-06-27 18:20:31,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44630 conditions, 8509 events. 5313/8509 cut-off events. For 144909/144937 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 55936 event pairs, 1702 based on Foata normal form. 24/8360 useless extension candidates. Maximal degree in co-relation 44570. Up to 7010 conditions per place. [2024-06-27 18:20:31,918 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 164 selfloop transitions, 42 changer transitions 0/223 dead transitions. [2024-06-27 18:20:31,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 223 transitions, 2276 flow [2024-06-27 18:20:31,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:31,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:31,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 18:20:31,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2024-06-27 18:20:31,920 INFO L175 Difference]: Start difference. First operand has 135 places, 162 transitions, 1538 flow. Second operand 9 states and 227 transitions. [2024-06-27 18:20:31,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 223 transitions, 2276 flow [2024-06-27 18:20:32,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 223 transitions, 2242 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 18:20:32,052 INFO L231 Difference]: Finished difference. Result has 143 places, 163 transitions, 1633 flow [2024-06-27 18:20:32,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1633, PETRI_PLACES=143, PETRI_TRANSITIONS=163} [2024-06-27 18:20:32,053 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 90 predicate places. [2024-06-27 18:20:32,053 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 163 transitions, 1633 flow [2024-06-27 18:20:32,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:32,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:32,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:32,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:20:32,053 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:32,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:32,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1461763183, now seen corresponding path program 2 times [2024-06-27 18:20:32,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:32,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110279837] [2024-06-27 18:20:32,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:32,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:32,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:32,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110279837] [2024-06-27 18:20:32,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110279837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:32,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:32,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:32,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161532627] [2024-06-27 18:20:32,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:32,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:32,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:32,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:32,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:33,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:33,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 163 transitions, 1633 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:33,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:33,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:33,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:34,361 INFO L124 PetriNetUnfolderBase]: 5770/9230 cut-off events. [2024-06-27 18:20:34,361 INFO L125 PetriNetUnfolderBase]: For 157421/157433 co-relation queries the response was YES. [2024-06-27 18:20:34,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48857 conditions, 9230 events. 5770/9230 cut-off events. For 157421/157433 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 59921 event pairs, 2051 based on Foata normal form. 4/9030 useless extension candidates. Maximal degree in co-relation 48794. Up to 8138 conditions per place. [2024-06-27 18:20:34,436 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 173 selfloop transitions, 24 changer transitions 0/210 dead transitions. [2024-06-27 18:20:34,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 210 transitions, 2237 flow [2024-06-27 18:20:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:34,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:20:34,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 18:20:34,438 INFO L175 Difference]: Start difference. First operand has 143 places, 163 transitions, 1633 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:20:34,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 210 transitions, 2237 flow [2024-06-27 18:20:34,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 210 transitions, 2134 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:34,587 INFO L231 Difference]: Finished difference. Result has 145 places, 168 transitions, 1685 flow [2024-06-27 18:20:34,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1685, PETRI_PLACES=145, PETRI_TRANSITIONS=168} [2024-06-27 18:20:34,588 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2024-06-27 18:20:34,588 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 168 transitions, 1685 flow [2024-06-27 18:20:34,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:34,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:34,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:34,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:20:34,589 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:34,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:34,589 INFO L85 PathProgramCache]: Analyzing trace with hash 380632317, now seen corresponding path program 3 times [2024-06-27 18:20:34,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:34,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439381007] [2024-06-27 18:20:34,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:34,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:35,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:35,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439381007] [2024-06-27 18:20:35,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439381007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:35,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:35,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:35,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120078275] [2024-06-27 18:20:35,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:35,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:35,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:35,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:35,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:35,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:35,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 168 transitions, 1685 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:35,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:35,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:35,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:36,714 INFO L124 PetriNetUnfolderBase]: 5807/9303 cut-off events. [2024-06-27 18:20:36,714 INFO L125 PetriNetUnfolderBase]: For 160613/160625 co-relation queries the response was YES. [2024-06-27 18:20:36,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49486 conditions, 9303 events. 5807/9303 cut-off events. For 160613/160625 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 60596 event pairs, 1991 based on Foata normal form. 4/9099 useless extension candidates. Maximal degree in co-relation 49421. Up to 8230 conditions per place. [2024-06-27 18:20:36,803 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 175 selfloop transitions, 22 changer transitions 0/210 dead transitions. [2024-06-27 18:20:36,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 210 transitions, 2245 flow [2024-06-27 18:20:36,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:20:36,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 18:20:36,804 INFO L175 Difference]: Start difference. First operand has 145 places, 168 transitions, 1685 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:20:36,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 210 transitions, 2245 flow [2024-06-27 18:20:36,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 210 transitions, 2146 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:36,991 INFO L231 Difference]: Finished difference. Result has 149 places, 173 transitions, 1723 flow [2024-06-27 18:20:36,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1723, PETRI_PLACES=149, PETRI_TRANSITIONS=173} [2024-06-27 18:20:36,991 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 96 predicate places. [2024-06-27 18:20:36,991 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 173 transitions, 1723 flow [2024-06-27 18:20:36,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:36,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:36,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:36,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:20:36,992 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:36,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:36,992 INFO L85 PathProgramCache]: Analyzing trace with hash 629743977, now seen corresponding path program 4 times [2024-06-27 18:20:36,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:36,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974356925] [2024-06-27 18:20:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:36,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:37,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:37,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974356925] [2024-06-27 18:20:37,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974356925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:37,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:37,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:37,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346892320] [2024-06-27 18:20:37,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:37,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:37,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:37,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:37,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:37,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:37,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 173 transitions, 1723 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:37,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:37,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:37,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:39,249 INFO L124 PetriNetUnfolderBase]: 5844/9350 cut-off events. [2024-06-27 18:20:39,250 INFO L125 PetriNetUnfolderBase]: For 171702/171714 co-relation queries the response was YES. [2024-06-27 18:20:39,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50518 conditions, 9350 events. 5844/9350 cut-off events. For 171702/171714 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 60794 event pairs, 2000 based on Foata normal form. 4/9148 useless extension candidates. Maximal degree in co-relation 50451. Up to 8297 conditions per place. [2024-06-27 18:20:39,317 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 182 selfloop transitions, 19 changer transitions 0/214 dead transitions. [2024-06-27 18:20:39,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 214 transitions, 2295 flow [2024-06-27 18:20:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:39,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:39,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:20:39,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-27 18:20:39,324 INFO L175 Difference]: Start difference. First operand has 149 places, 173 transitions, 1723 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:20:39,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 214 transitions, 2295 flow [2024-06-27 18:20:39,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 214 transitions, 2200 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:39,474 INFO L231 Difference]: Finished difference. Result has 152 places, 175 transitions, 1735 flow [2024-06-27 18:20:39,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1735, PETRI_PLACES=152, PETRI_TRANSITIONS=175} [2024-06-27 18:20:39,475 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 99 predicate places. [2024-06-27 18:20:39,475 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 175 transitions, 1735 flow [2024-06-27 18:20:39,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:39,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:39,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:39,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:20:39,476 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:39,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:39,476 INFO L85 PathProgramCache]: Analyzing trace with hash 638911917, now seen corresponding path program 5 times [2024-06-27 18:20:39,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:39,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524487665] [2024-06-27 18:20:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:39,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:40,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:40,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524487665] [2024-06-27 18:20:40,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524487665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:40,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:40,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:40,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750920869] [2024-06-27 18:20:40,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:40,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:40,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:40,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:40,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:40,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:40,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 175 transitions, 1735 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:40,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:40,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:40,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:41,790 INFO L124 PetriNetUnfolderBase]: 5844/9350 cut-off events. [2024-06-27 18:20:41,790 INFO L125 PetriNetUnfolderBase]: For 178669/178681 co-relation queries the response was YES. [2024-06-27 18:20:41,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50759 conditions, 9350 events. 5844/9350 cut-off events. For 178669/178681 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 60794 event pairs, 2052 based on Foata normal form. 4/9148 useless extension candidates. Maximal degree in co-relation 50691. Up to 8235 conditions per place. [2024-06-27 18:20:41,870 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 176 selfloop transitions, 27 changer transitions 0/216 dead transitions. [2024-06-27 18:20:41,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 216 transitions, 2315 flow [2024-06-27 18:20:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:20:41,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-06-27 18:20:41,872 INFO L175 Difference]: Start difference. First operand has 152 places, 175 transitions, 1735 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:20:41,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 216 transitions, 2315 flow [2024-06-27 18:20:42,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 216 transitions, 2227 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:42,018 INFO L231 Difference]: Finished difference. Result has 155 places, 177 transitions, 1777 flow [2024-06-27 18:20:42,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1777, PETRI_PLACES=155, PETRI_TRANSITIONS=177} [2024-06-27 18:20:42,018 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 102 predicate places. [2024-06-27 18:20:42,019 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 177 transitions, 1777 flow [2024-06-27 18:20:42,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:42,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:42,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:42,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:20:42,019 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:42,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:42,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1196988711, now seen corresponding path program 1 times [2024-06-27 18:20:42,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:42,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296871173] [2024-06-27 18:20:42,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:42,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:42,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:42,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296871173] [2024-06-27 18:20:42,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296871173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:42,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:42,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:42,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590033955] [2024-06-27 18:20:42,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:42,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:42,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:42,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:42,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:42,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:42,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 177 transitions, 1777 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:42,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:42,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:42,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:44,383 INFO L124 PetriNetUnfolderBase]: 5875/9402 cut-off events. [2024-06-27 18:20:44,383 INFO L125 PetriNetUnfolderBase]: For 185261/185273 co-relation queries the response was YES. [2024-06-27 18:20:44,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51182 conditions, 9402 events. 5875/9402 cut-off events. For 185261/185273 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 61205 event pairs, 2015 based on Foata normal form. 2/9192 useless extension candidates. Maximal degree in co-relation 51113. Up to 8274 conditions per place. [2024-06-27 18:20:44,462 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 180 selfloop transitions, 29 changer transitions 0/222 dead transitions. [2024-06-27 18:20:44,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 222 transitions, 2384 flow [2024-06-27 18:20:44,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:44,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:44,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:20:44,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 18:20:44,463 INFO L175 Difference]: Start difference. First operand has 155 places, 177 transitions, 1777 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:20:44,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 222 transitions, 2384 flow [2024-06-27 18:20:44,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 222 transitions, 2218 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:44,685 INFO L231 Difference]: Finished difference. Result has 157 places, 183 transitions, 1768 flow [2024-06-27 18:20:44,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1768, PETRI_PLACES=157, PETRI_TRANSITIONS=183} [2024-06-27 18:20:44,685 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 104 predicate places. [2024-06-27 18:20:44,686 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 183 transitions, 1768 flow [2024-06-27 18:20:44,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:44,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:44,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:44,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:20:44,688 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:44,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:44,688 INFO L85 PathProgramCache]: Analyzing trace with hash -119322071, now seen corresponding path program 2 times [2024-06-27 18:20:44,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:44,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907491664] [2024-06-27 18:20:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:44,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:45,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:45,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907491664] [2024-06-27 18:20:45,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907491664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:45,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:45,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:45,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572270978] [2024-06-27 18:20:45,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:45,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:45,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:45,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:45,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:45,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:45,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 183 transitions, 1768 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:45,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:45,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:45,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:46,391 INFO L124 PetriNetUnfolderBase]: 5839/9375 cut-off events. [2024-06-27 18:20:46,391 INFO L125 PetriNetUnfolderBase]: For 173211/173278 co-relation queries the response was YES. [2024-06-27 18:20:46,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49096 conditions, 9375 events. 5839/9375 cut-off events. For 173211/173278 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 61517 event pairs, 2187 based on Foata normal form. 28/9171 useless extension candidates. Maximal degree in co-relation 49026. Up to 8394 conditions per place. [2024-06-27 18:20:46,479 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 164 selfloop transitions, 13 changer transitions 0/200 dead transitions. [2024-06-27 18:20:46,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 200 transitions, 2170 flow [2024-06-27 18:20:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-27 18:20:46,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-27 18:20:46,481 INFO L175 Difference]: Start difference. First operand has 157 places, 183 transitions, 1768 flow. Second operand 6 states and 132 transitions. [2024-06-27 18:20:46,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 200 transitions, 2170 flow [2024-06-27 18:20:46,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 200 transitions, 2108 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:46,636 INFO L231 Difference]: Finished difference. Result has 157 places, 183 transitions, 1738 flow [2024-06-27 18:20:46,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1738, PETRI_PLACES=157, PETRI_TRANSITIONS=183} [2024-06-27 18:20:46,636 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 104 predicate places. [2024-06-27 18:20:46,636 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 183 transitions, 1738 flow [2024-06-27 18:20:46,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:46,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:46,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:46,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:20:46,637 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:46,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:46,637 INFO L85 PathProgramCache]: Analyzing trace with hash -125029078, now seen corresponding path program 1 times [2024-06-27 18:20:46,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:46,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571295636] [2024-06-27 18:20:46,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:46,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:47,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:47,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571295636] [2024-06-27 18:20:47,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571295636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:47,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:47,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:47,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811803683] [2024-06-27 18:20:47,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:47,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:47,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:47,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:47,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:47,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:20:47,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 183 transitions, 1738 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:47,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:47,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:20:47,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:48,453 INFO L124 PetriNetUnfolderBase]: 6236/9854 cut-off events. [2024-06-27 18:20:48,454 INFO L125 PetriNetUnfolderBase]: For 183837/183837 co-relation queries the response was YES. [2024-06-27 18:20:48,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52325 conditions, 9854 events. 6236/9854 cut-off events. For 183837/183837 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 63235 event pairs, 2189 based on Foata normal form. 1/9644 useless extension candidates. Maximal degree in co-relation 52254. Up to 8950 conditions per place. [2024-06-27 18:20:48,533 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 181 selfloop transitions, 24 changer transitions 0/213 dead transitions. [2024-06-27 18:20:48,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 213 transitions, 2334 flow [2024-06-27 18:20:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 18:20:48,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-06-27 18:20:48,534 INFO L175 Difference]: Start difference. First operand has 157 places, 183 transitions, 1738 flow. Second operand 6 states and 135 transitions. [2024-06-27 18:20:48,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 213 transitions, 2334 flow [2024-06-27 18:20:48,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 213 transitions, 2285 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:48,694 INFO L231 Difference]: Finished difference. Result has 158 places, 189 transitions, 1802 flow [2024-06-27 18:20:48,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1802, PETRI_PLACES=158, PETRI_TRANSITIONS=189} [2024-06-27 18:20:48,694 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 105 predicate places. [2024-06-27 18:20:48,695 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 189 transitions, 1802 flow [2024-06-27 18:20:48,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:48,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:48,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:48,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:20:48,695 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:48,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:48,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2019829108, now seen corresponding path program 2 times [2024-06-27 18:20:48,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:48,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964727550] [2024-06-27 18:20:48,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:48,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:49,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:49,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964727550] [2024-06-27 18:20:49,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964727550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:49,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:49,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:20:49,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562296542] [2024-06-27 18:20:49,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:49,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:20:49,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:49,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:20:49,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:20:49,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:20:49,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 189 transitions, 1802 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:49,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:49,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:20:49,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:50,620 INFO L124 PetriNetUnfolderBase]: 6233/9854 cut-off events. [2024-06-27 18:20:50,621 INFO L125 PetriNetUnfolderBase]: For 192844/192847 co-relation queries the response was YES. [2024-06-27 18:20:50,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53367 conditions, 9854 events. 6233/9854 cut-off events. For 192844/192847 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 63294 event pairs, 2219 based on Foata normal form. 3/9644 useless extension candidates. Maximal degree in co-relation 53296. Up to 8947 conditions per place. [2024-06-27 18:20:50,692 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 177 selfloop transitions, 24 changer transitions 0/209 dead transitions. [2024-06-27 18:20:50,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 209 transitions, 2268 flow [2024-06-27 18:20:50,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:20:50,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:20:50,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-27 18:20:50,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2024-06-27 18:20:50,693 INFO L175 Difference]: Start difference. First operand has 158 places, 189 transitions, 1802 flow. Second operand 6 states and 131 transitions. [2024-06-27 18:20:50,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 209 transitions, 2268 flow [2024-06-27 18:20:50,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 209 transitions, 2217 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:50,875 INFO L231 Difference]: Finished difference. Result has 162 places, 189 transitions, 1806 flow [2024-06-27 18:20:50,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1806, PETRI_PLACES=162, PETRI_TRANSITIONS=189} [2024-06-27 18:20:50,876 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 109 predicate places. [2024-06-27 18:20:50,876 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 189 transitions, 1806 flow [2024-06-27 18:20:50,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:50,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:50,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:50,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:20:50,876 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:50,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:50,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1475783164, now seen corresponding path program 1 times [2024-06-27 18:20:50,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:50,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138481311] [2024-06-27 18:20:50,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:50,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:51,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:51,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138481311] [2024-06-27 18:20:51,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138481311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:51,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:51,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:51,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497654647] [2024-06-27 18:20:51,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:51,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:51,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:51,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:52,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:52,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 189 transitions, 1806 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:52,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:52,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:52,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:53,521 INFO L124 PetriNetUnfolderBase]: 5940/9394 cut-off events. [2024-06-27 18:20:53,522 INFO L125 PetriNetUnfolderBase]: For 201067/201092 co-relation queries the response was YES. [2024-06-27 18:20:53,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51934 conditions, 9394 events. 5940/9394 cut-off events. For 201067/201092 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 60089 event pairs, 1496 based on Foata normal form. 6/9162 useless extension candidates. Maximal degree in co-relation 51861. Up to 7926 conditions per place. [2024-06-27 18:20:53,608 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 191 selfloop transitions, 50 changer transitions 0/256 dead transitions. [2024-06-27 18:20:53,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 256 transitions, 2642 flow [2024-06-27 18:20:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:20:53,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 18:20:53,610 INFO L175 Difference]: Start difference. First operand has 162 places, 189 transitions, 1806 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:20:53,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 256 transitions, 2642 flow [2024-06-27 18:20:53,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 256 transitions, 2574 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:53,821 INFO L231 Difference]: Finished difference. Result has 167 places, 199 transitions, 2036 flow [2024-06-27 18:20:53,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2036, PETRI_PLACES=167, PETRI_TRANSITIONS=199} [2024-06-27 18:20:53,822 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 114 predicate places. [2024-06-27 18:20:53,822 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 199 transitions, 2036 flow [2024-06-27 18:20:53,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:53,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:53,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:53,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:20:53,823 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:53,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:53,823 INFO L85 PathProgramCache]: Analyzing trace with hash -480565112, now seen corresponding path program 1 times [2024-06-27 18:20:53,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:53,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642671041] [2024-06-27 18:20:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:53,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:54,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:54,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642671041] [2024-06-27 18:20:54,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642671041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:54,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:54,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:54,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954843624] [2024-06-27 18:20:54,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:54,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:54,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:54,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:54,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:54,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:54,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 199 transitions, 2036 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:54,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:54,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:54,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:55,805 INFO L124 PetriNetUnfolderBase]: 5969/9464 cut-off events. [2024-06-27 18:20:55,805 INFO L125 PetriNetUnfolderBase]: For 217299/217396 co-relation queries the response was YES. [2024-06-27 18:20:55,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53256 conditions, 9464 events. 5969/9464 cut-off events. For 217299/217396 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 61244 event pairs, 1816 based on Foata normal form. 38/9246 useless extension candidates. Maximal degree in co-relation 53181. Up to 8393 conditions per place. [2024-06-27 18:20:55,916 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 193 selfloop transitions, 28 changer transitions 0/244 dead transitions. [2024-06-27 18:20:55,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 244 transitions, 2750 flow [2024-06-27 18:20:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:55,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:20:55,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:20:55,917 INFO L175 Difference]: Start difference. First operand has 167 places, 199 transitions, 2036 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:20:55,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 244 transitions, 2750 flow [2024-06-27 18:20:56,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 244 transitions, 2606 flow, removed 56 selfloop flow, removed 3 redundant places. [2024-06-27 18:20:56,169 INFO L231 Difference]: Finished difference. Result has 172 places, 209 transitions, 2077 flow [2024-06-27 18:20:56,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2077, PETRI_PLACES=172, PETRI_TRANSITIONS=209} [2024-06-27 18:20:56,170 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 119 predicate places. [2024-06-27 18:20:56,170 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 209 transitions, 2077 flow [2024-06-27 18:20:56,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:56,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:56,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:56,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:20:56,171 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:56,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:56,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1558154884, now seen corresponding path program 2 times [2024-06-27 18:20:56,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:56,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391258591] [2024-06-27 18:20:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:56,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:56,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:56,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391258591] [2024-06-27 18:20:56,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391258591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:56,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:56,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:56,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085556018] [2024-06-27 18:20:56,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:56,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:56,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:56,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:56,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:57,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:57,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 209 transitions, 2077 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:57,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:57,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:57,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:58,537 INFO L124 PetriNetUnfolderBase]: 6173/9858 cut-off events. [2024-06-27 18:20:58,538 INFO L125 PetriNetUnfolderBase]: For 232095/232123 co-relation queries the response was YES. [2024-06-27 18:20:58,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56664 conditions, 9858 events. 6173/9858 cut-off events. For 232095/232123 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 64272 event pairs, 1978 based on Foata normal form. 4/9633 useless extension candidates. Maximal degree in co-relation 56586. Up to 8673 conditions per place. [2024-06-27 18:20:58,632 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 218 selfloop transitions, 24 changer transitions 0/257 dead transitions. [2024-06-27 18:20:58,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 257 transitions, 2757 flow [2024-06-27 18:20:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:58,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:58,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-27 18:20:58,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 18:20:58,633 INFO L175 Difference]: Start difference. First operand has 172 places, 209 transitions, 2077 flow. Second operand 9 states and 207 transitions. [2024-06-27 18:20:58,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 257 transitions, 2757 flow [2024-06-27 18:20:58,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 257 transitions, 2706 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:58,877 INFO L231 Difference]: Finished difference. Result has 179 places, 211 transitions, 2151 flow [2024-06-27 18:20:58,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2151, PETRI_PLACES=179, PETRI_TRANSITIONS=211} [2024-06-27 18:20:58,878 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 126 predicate places. [2024-06-27 18:20:58,878 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 211 transitions, 2151 flow [2024-06-27 18:20:58,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:58,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:58,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:58,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:20:58,878 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:58,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:58,879 INFO L85 PathProgramCache]: Analyzing trace with hash 280754244, now seen corresponding path program 3 times [2024-06-27 18:20:58,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:58,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604469865] [2024-06-27 18:20:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:58,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:59,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:59,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604469865] [2024-06-27 18:20:59,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604469865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:59,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:59,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:59,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457571424] [2024-06-27 18:20:59,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:59,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:59,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:59,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:59,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:20:59,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 211 transitions, 2151 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:59,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:59,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:20:59,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:01,407 INFO L124 PetriNetUnfolderBase]: 6210/9913 cut-off events. [2024-06-27 18:21:01,407 INFO L125 PetriNetUnfolderBase]: For 244800/244828 co-relation queries the response was YES. [2024-06-27 18:21:01,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57422 conditions, 9913 events. 6210/9913 cut-off events. For 244800/244828 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 64790 event pairs, 2023 based on Foata normal form. 4/9688 useless extension candidates. Maximal degree in co-relation 57341. Up to 8740 conditions per place. [2024-06-27 18:21:01,506 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 224 selfloop transitions, 22 changer transitions 0/261 dead transitions. [2024-06-27 18:21:01,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 261 transitions, 2863 flow [2024-06-27 18:21:01,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:01,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 18:21:01,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940898345153664 [2024-06-27 18:21:01,507 INFO L175 Difference]: Start difference. First operand has 179 places, 211 transitions, 2151 flow. Second operand 9 states and 209 transitions. [2024-06-27 18:21:01,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 261 transitions, 2863 flow [2024-06-27 18:21:01,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 261 transitions, 2756 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:01,806 INFO L231 Difference]: Finished difference. Result has 181 places, 213 transitions, 2169 flow [2024-06-27 18:21:01,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2169, PETRI_PLACES=181, PETRI_TRANSITIONS=213} [2024-06-27 18:21:01,807 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 128 predicate places. [2024-06-27 18:21:01,807 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 213 transitions, 2169 flow [2024-06-27 18:21:01,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:01,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:01,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:01,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:21:01,807 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:01,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:01,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1952772120, now seen corresponding path program 4 times [2024-06-27 18:21:01,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:01,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226704264] [2024-06-27 18:21:01,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:01,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:02,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:02,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226704264] [2024-06-27 18:21:02,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226704264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:02,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:02,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:02,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681749815] [2024-06-27 18:21:02,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:02,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:02,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:02,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:02,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:02,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:21:02,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 213 transitions, 2169 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:02,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:02,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:21:02,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:04,309 INFO L124 PetriNetUnfolderBase]: 6247/9968 cut-off events. [2024-06-27 18:21:04,309 INFO L125 PetriNetUnfolderBase]: For 258585/258613 co-relation queries the response was YES. [2024-06-27 18:21:04,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58264 conditions, 9968 events. 6247/9968 cut-off events. For 258585/258613 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 65114 event pairs, 2063 based on Foata normal form. 4/9743 useless extension candidates. Maximal degree in co-relation 58182. Up to 8718 conditions per place. [2024-06-27 18:21:04,409 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 223 selfloop transitions, 25 changer transitions 0/263 dead transitions. [2024-06-27 18:21:04,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 263 transitions, 2887 flow [2024-06-27 18:21:04,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:04,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:04,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-27 18:21:04,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-27 18:21:04,410 INFO L175 Difference]: Start difference. First operand has 181 places, 213 transitions, 2169 flow. Second operand 9 states and 210 transitions. [2024-06-27 18:21:04,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 263 transitions, 2887 flow [2024-06-27 18:21:04,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 263 transitions, 2784 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:04,726 INFO L231 Difference]: Finished difference. Result has 184 places, 215 transitions, 2201 flow [2024-06-27 18:21:04,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2201, PETRI_PLACES=184, PETRI_TRANSITIONS=215} [2024-06-27 18:21:04,728 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 131 predicate places. [2024-06-27 18:21:04,728 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 215 transitions, 2201 flow [2024-06-27 18:21:04,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:04,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:04,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:04,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:21:04,729 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:04,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:04,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1292219338, now seen corresponding path program 5 times [2024-06-27 18:21:04,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:04,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933353753] [2024-06-27 18:21:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:04,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:05,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:05,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933353753] [2024-06-27 18:21:05,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933353753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:05,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:05,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:05,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783770178] [2024-06-27 18:21:05,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:05,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:05,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:05,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:05,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:05,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:21:05,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 215 transitions, 2201 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:05,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:05,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:21:05,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:07,337 INFO L124 PetriNetUnfolderBase]: 6330/10083 cut-off events. [2024-06-27 18:21:07,338 INFO L125 PetriNetUnfolderBase]: For 272077/272105 co-relation queries the response was YES. [2024-06-27 18:21:07,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59528 conditions, 10083 events. 6330/10083 cut-off events. For 272077/272105 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 65774 event pairs, 2019 based on Foata normal form. 4/9859 useless extension candidates. Maximal degree in co-relation 59445. Up to 8771 conditions per place. [2024-06-27 18:21:07,434 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 224 selfloop transitions, 33 changer transitions 0/272 dead transitions. [2024-06-27 18:21:07,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 272 transitions, 3005 flow [2024-06-27 18:21:07,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:07,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:07,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 18:21:07,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-27 18:21:07,435 INFO L175 Difference]: Start difference. First operand has 184 places, 215 transitions, 2201 flow. Second operand 9 states and 214 transitions. [2024-06-27 18:21:07,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 272 transitions, 3005 flow [2024-06-27 18:21:07,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 272 transitions, 2888 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:07,767 INFO L231 Difference]: Finished difference. Result has 187 places, 221 transitions, 2293 flow [2024-06-27 18:21:07,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2293, PETRI_PLACES=187, PETRI_TRANSITIONS=221} [2024-06-27 18:21:07,767 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 134 predicate places. [2024-06-27 18:21:07,767 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 221 transitions, 2293 flow [2024-06-27 18:21:07,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:07,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:07,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:07,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:21:07,768 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:07,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:07,768 INFO L85 PathProgramCache]: Analyzing trace with hash 287904084, now seen corresponding path program 6 times [2024-06-27 18:21:07,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:07,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368834205] [2024-06-27 18:21:07,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:07,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:08,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:08,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368834205] [2024-06-27 18:21:08,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368834205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:08,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:08,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:08,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644903682] [2024-06-27 18:21:08,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:08,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:08,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:08,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:08,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:08,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:21:08,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 221 transitions, 2293 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:08,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:08,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:21:08,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:10,380 INFO L124 PetriNetUnfolderBase]: 6367/10162 cut-off events. [2024-06-27 18:21:10,380 INFO L125 PetriNetUnfolderBase]: For 289542/289570 co-relation queries the response was YES. [2024-06-27 18:21:10,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60995 conditions, 10162 events. 6367/10162 cut-off events. For 289542/289570 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 66607 event pairs, 2060 based on Foata normal form. 4/9932 useless extension candidates. Maximal degree in co-relation 60910. Up to 8890 conditions per place. [2024-06-27 18:21:10,473 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 223 selfloop transitions, 33 changer transitions 0/271 dead transitions. [2024-06-27 18:21:10,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 271 transitions, 3037 flow [2024-06-27 18:21:10,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:10,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-27 18:21:10,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-27 18:21:10,475 INFO L175 Difference]: Start difference. First operand has 187 places, 221 transitions, 2293 flow. Second operand 9 states and 210 transitions. [2024-06-27 18:21:10,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 271 transitions, 3037 flow [2024-06-27 18:21:10,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 271 transitions, 2890 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:10,803 INFO L231 Difference]: Finished difference. Result has 190 places, 223 transitions, 2308 flow [2024-06-27 18:21:10,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2308, PETRI_PLACES=190, PETRI_TRANSITIONS=223} [2024-06-27 18:21:10,803 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 137 predicate places. [2024-06-27 18:21:10,804 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 223 transitions, 2308 flow [2024-06-27 18:21:10,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:10,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:10,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:10,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:21:10,804 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:10,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:10,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1286655148, now seen corresponding path program 7 times [2024-06-27 18:21:10,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:10,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489483302] [2024-06-27 18:21:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:10,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:11,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:11,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489483302] [2024-06-27 18:21:11,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489483302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:11,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:11,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:11,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239629070] [2024-06-27 18:21:11,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:11,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:11,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:11,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:11,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:11,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:21:11,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 223 transitions, 2308 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:11,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:11,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:21:11,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:13,609 INFO L124 PetriNetUnfolderBase]: 6404/10233 cut-off events. [2024-06-27 18:21:13,610 INFO L125 PetriNetUnfolderBase]: For 304836/304864 co-relation queries the response was YES. [2024-06-27 18:21:13,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61746 conditions, 10233 events. 6404/10233 cut-off events. For 304836/304864 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 67224 event pairs, 2047 based on Foata normal form. 4/9998 useless extension candidates. Maximal degree in co-relation 61660. Up to 8881 conditions per place. [2024-06-27 18:21:13,709 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 229 selfloop transitions, 34 changer transitions 0/278 dead transitions. [2024-06-27 18:21:13,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 278 transitions, 3115 flow [2024-06-27 18:21:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:13,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 18:21:13,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-06-27 18:21:13,711 INFO L175 Difference]: Start difference. First operand has 190 places, 223 transitions, 2308 flow. Second operand 9 states and 215 transitions. [2024-06-27 18:21:13,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 278 transitions, 3115 flow [2024-06-27 18:21:14,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 278 transitions, 2969 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:14,109 INFO L231 Difference]: Finished difference. Result has 192 places, 227 transitions, 2352 flow [2024-06-27 18:21:14,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2352, PETRI_PLACES=192, PETRI_TRANSITIONS=227} [2024-06-27 18:21:14,112 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-06-27 18:21:14,112 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 227 transitions, 2352 flow [2024-06-27 18:21:14,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:14,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:14,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:14,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:21:14,113 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:14,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1929982656, now seen corresponding path program 8 times [2024-06-27 18:21:14,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:14,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535497279] [2024-06-27 18:21:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:14,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:15,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:15,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535497279] [2024-06-27 18:21:15,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535497279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:15,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:15,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:15,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721301989] [2024-06-27 18:21:15,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:15,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:15,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:15,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:21:15,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 227 transitions, 2352 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:15,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:15,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:21:15,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:16,842 INFO L124 PetriNetUnfolderBase]: 6441/10270 cut-off events. [2024-06-27 18:21:16,842 INFO L125 PetriNetUnfolderBase]: For 304102/304130 co-relation queries the response was YES. [2024-06-27 18:21:16,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61974 conditions, 10270 events. 6441/10270 cut-off events. For 304102/304130 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 67300 event pairs, 2034 based on Foata normal form. 4/10039 useless extension candidates. Maximal degree in co-relation 61887. Up to 8825 conditions per place. [2024-06-27 18:21:16,945 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 226 selfloop transitions, 39 changer transitions 0/280 dead transitions. [2024-06-27 18:21:16,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 280 transitions, 3136 flow [2024-06-27 18:21:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 18:21:16,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-06-27 18:21:16,947 INFO L175 Difference]: Start difference. First operand has 192 places, 227 transitions, 2352 flow. Second operand 9 states and 215 transitions. [2024-06-27 18:21:16,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 280 transitions, 3136 flow [2024-06-27 18:21:17,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 280 transitions, 3003 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:17,337 INFO L231 Difference]: Finished difference. Result has 196 places, 229 transitions, 2394 flow [2024-06-27 18:21:17,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2394, PETRI_PLACES=196, PETRI_TRANSITIONS=229} [2024-06-27 18:21:17,337 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 143 predicate places. [2024-06-27 18:21:17,338 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 229 transitions, 2394 flow [2024-06-27 18:21:17,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:17,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:17,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:17,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:21:17,338 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:17,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:17,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1548064384, now seen corresponding path program 9 times [2024-06-27 18:21:17,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:17,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788673948] [2024-06-27 18:21:17,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:17,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:18,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:18,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788673948] [2024-06-27 18:21:18,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788673948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:18,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:18,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:18,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974590915] [2024-06-27 18:21:18,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:18,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:18,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:18,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:18,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:18,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:21:18,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 229 transitions, 2394 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:18,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:18,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:21:18,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:20,134 INFO L124 PetriNetUnfolderBase]: 6441/10268 cut-off events. [2024-06-27 18:21:20,134 INFO L125 PetriNetUnfolderBase]: For 313039/313067 co-relation queries the response was YES. [2024-06-27 18:21:20,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62036 conditions, 10268 events. 6441/10268 cut-off events. For 313039/313067 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 67308 event pairs, 2064 based on Foata normal form. 4/10039 useless extension candidates. Maximal degree in co-relation 61948. Up to 8846 conditions per place. [2024-06-27 18:21:20,244 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 225 selfloop transitions, 39 changer transitions 0/279 dead transitions. [2024-06-27 18:21:20,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 279 transitions, 3160 flow [2024-06-27 18:21:20,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:20,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 18:21:20,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-06-27 18:21:20,245 INFO L175 Difference]: Start difference. First operand has 196 places, 229 transitions, 2394 flow. Second operand 9 states and 211 transitions. [2024-06-27 18:21:20,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 279 transitions, 3160 flow [2024-06-27 18:21:20,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 279 transitions, 3003 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:20,736 INFO L231 Difference]: Finished difference. Result has 198 places, 231 transitions, 2419 flow [2024-06-27 18:21:20,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2419, PETRI_PLACES=198, PETRI_TRANSITIONS=231} [2024-06-27 18:21:20,736 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 145 predicate places. [2024-06-27 18:21:20,737 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 231 transitions, 2419 flow [2024-06-27 18:21:20,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:20,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:20,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:20,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:21:20,737 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:20,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:20,738 INFO L85 PathProgramCache]: Analyzing trace with hash 590050110, now seen corresponding path program 2 times [2024-06-27 18:21:20,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:20,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116532372] [2024-06-27 18:21:20,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:20,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:21,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:21,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116532372] [2024-06-27 18:21:21,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116532372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:21,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:21,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:21,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545611802] [2024-06-27 18:21:21,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:21,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:21,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:21,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:21,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:21,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:21:21,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 231 transitions, 2419 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:21,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:21,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:21:21,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:22,835 INFO L124 PetriNetUnfolderBase]: 6257/10022 cut-off events. [2024-06-27 18:21:22,835 INFO L125 PetriNetUnfolderBase]: For 325429/325601 co-relation queries the response was YES. [2024-06-27 18:21:22,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59818 conditions, 10022 events. 6257/10022 cut-off events. For 325429/325601 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 66160 event pairs, 2118 based on Foata normal form. 84/9803 useless extension candidates. Maximal degree in co-relation 59729. Up to 8935 conditions per place. [2024-06-27 18:21:22,946 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 216 selfloop transitions, 17 changer transitions 0/256 dead transitions. [2024-06-27 18:21:22,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 256 transitions, 2987 flow [2024-06-27 18:21:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:22,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-27 18:21:22,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46504559270516715 [2024-06-27 18:21:22,949 INFO L175 Difference]: Start difference. First operand has 198 places, 231 transitions, 2419 flow. Second operand 7 states and 153 transitions. [2024-06-27 18:21:22,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 256 transitions, 2987 flow [2024-06-27 18:21:23,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 256 transitions, 2825 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:23,394 INFO L231 Difference]: Finished difference. Result has 198 places, 234 transitions, 2343 flow [2024-06-27 18:21:23,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2343, PETRI_PLACES=198, PETRI_TRANSITIONS=234} [2024-06-27 18:21:23,394 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 145 predicate places. [2024-06-27 18:21:23,394 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 234 transitions, 2343 flow [2024-06-27 18:21:23,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:23,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:23,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:23,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:21:23,395 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:23,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:23,395 INFO L85 PathProgramCache]: Analyzing trace with hash 595984480, now seen corresponding path program 3 times [2024-06-27 18:21:23,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:23,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052267311] [2024-06-27 18:21:23,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:23,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:23,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:23,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:23,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052267311] [2024-06-27 18:21:23,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052267311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:23,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:23,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:23,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66996348] [2024-06-27 18:21:23,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:23,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:23,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:23,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:23,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:24,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:21:24,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 234 transitions, 2343 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:24,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:24,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:21:24,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:25,395 INFO L124 PetriNetUnfolderBase]: 6245/9992 cut-off events. [2024-06-27 18:21:25,395 INFO L125 PetriNetUnfolderBase]: For 306054/306210 co-relation queries the response was YES. [2024-06-27 18:21:25,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58401 conditions, 9992 events. 6245/9992 cut-off events. For 306054/306210 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 65807 event pairs, 2080 based on Foata normal form. 83/9778 useless extension candidates. Maximal degree in co-relation 58311. Up to 8878 conditions per place. [2024-06-27 18:21:25,519 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 215 selfloop transitions, 22 changer transitions 0/260 dead transitions. [2024-06-27 18:21:25,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 260 transitions, 2901 flow [2024-06-27 18:21:25,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:25,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:25,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:21:25,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-06-27 18:21:25,520 INFO L175 Difference]: Start difference. First operand has 198 places, 234 transitions, 2343 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:21:25,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 260 transitions, 2901 flow [2024-06-27 18:21:25,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 260 transitions, 2819 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:25,920 INFO L231 Difference]: Finished difference. Result has 200 places, 234 transitions, 2311 flow [2024-06-27 18:21:25,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2311, PETRI_PLACES=200, PETRI_TRANSITIONS=234} [2024-06-27 18:21:25,920 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 147 predicate places. [2024-06-27 18:21:25,920 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 234 transitions, 2311 flow [2024-06-27 18:21:25,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:25,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:25,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:25,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:21:25,921 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:25,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:25,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1049538073, now seen corresponding path program 1 times [2024-06-27 18:21:25,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:25,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439673679] [2024-06-27 18:21:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:25,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:26,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:26,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439673679] [2024-06-27 18:21:26,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439673679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:26,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:26,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:26,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429233392] [2024-06-27 18:21:26,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:26,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:26,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:26,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:26,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:26,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:21:26,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 234 transitions, 2311 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:26,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:26,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:21:26,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:28,247 INFO L124 PetriNetUnfolderBase]: 6885/10923 cut-off events. [2024-06-27 18:21:28,247 INFO L125 PetriNetUnfolderBase]: For 313098/313098 co-relation queries the response was YES. [2024-06-27 18:21:28,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63439 conditions, 10923 events. 6885/10923 cut-off events. For 313098/313098 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 71536 event pairs, 2222 based on Foata normal form. 2/10676 useless extension candidates. Maximal degree in co-relation 63349. Up to 9842 conditions per place. [2024-06-27 18:21:28,355 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 235 selfloop transitions, 25 changer transitions 0/268 dead transitions. [2024-06-27 18:21:28,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 268 transitions, 2957 flow [2024-06-27 18:21:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:21:28,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47416413373860183 [2024-06-27 18:21:28,357 INFO L175 Difference]: Start difference. First operand has 200 places, 234 transitions, 2311 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:21:28,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 268 transitions, 2957 flow [2024-06-27 18:21:28,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 268 transitions, 2879 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:28,731 INFO L231 Difference]: Finished difference. Result has 201 places, 237 transitions, 2337 flow [2024-06-27 18:21:28,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2233, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2337, PETRI_PLACES=201, PETRI_TRANSITIONS=237} [2024-06-27 18:21:28,731 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 148 predicate places. [2024-06-27 18:21:28,731 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 237 transitions, 2337 flow [2024-06-27 18:21:28,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:28,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:28,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:28,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:21:28,732 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:28,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash 589769693, now seen corresponding path program 1 times [2024-06-27 18:21:28,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:28,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222066540] [2024-06-27 18:21:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:28,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:29,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:29,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222066540] [2024-06-27 18:21:29,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222066540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:29,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:29,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:29,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942311287] [2024-06-27 18:21:29,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:29,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:29,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:29,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:29,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:29,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:21:29,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 237 transitions, 2337 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:29,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:29,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:21:29,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:31,003 INFO L124 PetriNetUnfolderBase]: 6936/10912 cut-off events. [2024-06-27 18:21:31,003 INFO L125 PetriNetUnfolderBase]: For 325402/325402 co-relation queries the response was YES. [2024-06-27 18:21:31,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64420 conditions, 10912 events. 6936/10912 cut-off events. For 325402/325402 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 70519 event pairs, 2247 based on Foata normal form. 3/10686 useless extension candidates. Maximal degree in co-relation 64329. Up to 9818 conditions per place. [2024-06-27 18:21:31,133 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 239 selfloop transitions, 32 changer transitions 0/279 dead transitions. [2024-06-27 18:21:31,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 279 transitions, 3161 flow [2024-06-27 18:21:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:31,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 18:21:31,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49240121580547114 [2024-06-27 18:21:31,134 INFO L175 Difference]: Start difference. First operand has 201 places, 237 transitions, 2337 flow. Second operand 7 states and 162 transitions. [2024-06-27 18:21:31,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 279 transitions, 3161 flow [2024-06-27 18:21:31,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 279 transitions, 3083 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:31,643 INFO L231 Difference]: Finished difference. Result has 203 places, 243 transitions, 2399 flow [2024-06-27 18:21:31,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2399, PETRI_PLACES=203, PETRI_TRANSITIONS=243} [2024-06-27 18:21:31,644 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 150 predicate places. [2024-06-27 18:21:31,644 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 243 transitions, 2399 flow [2024-06-27 18:21:31,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:31,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:31,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:31,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:21:31,645 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:31,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:31,645 INFO L85 PathProgramCache]: Analyzing trace with hash 419067077, now seen corresponding path program 2 times [2024-06-27 18:21:31,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:31,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040766236] [2024-06-27 18:21:31,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:31,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:32,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:32,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040766236] [2024-06-27 18:21:32,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040766236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:32,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:32,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:32,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515606482] [2024-06-27 18:21:32,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:32,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:32,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:32,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:32,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:21:32,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 243 transitions, 2399 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:32,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:32,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:21:32,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:33,940 INFO L124 PetriNetUnfolderBase]: 6970/11057 cut-off events. [2024-06-27 18:21:33,940 INFO L125 PetriNetUnfolderBase]: For 337868/337868 co-relation queries the response was YES. [2024-06-27 18:21:34,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65847 conditions, 11057 events. 6970/11057 cut-off events. For 337868/337868 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 72424 event pairs, 2225 based on Foata normal form. 2/10805 useless extension candidates. Maximal degree in co-relation 65755. Up to 9877 conditions per place. [2024-06-27 18:21:34,064 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 235 selfloop transitions, 38 changer transitions 0/281 dead transitions. [2024-06-27 18:21:34,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 281 transitions, 3241 flow [2024-06-27 18:21:34,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:21:34,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48328267477203646 [2024-06-27 18:21:34,065 INFO L175 Difference]: Start difference. First operand has 203 places, 243 transitions, 2399 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:21:34,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 281 transitions, 3241 flow [2024-06-27 18:21:34,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 281 transitions, 3186 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 18:21:34,565 INFO L231 Difference]: Finished difference. Result has 207 places, 249 transitions, 2528 flow [2024-06-27 18:21:34,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2528, PETRI_PLACES=207, PETRI_TRANSITIONS=249} [2024-06-27 18:21:34,565 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 154 predicate places. [2024-06-27 18:21:34,565 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 249 transitions, 2528 flow [2024-06-27 18:21:34,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:34,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:34,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:34,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:21:34,566 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:34,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:34,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2003476603, now seen corresponding path program 2 times [2024-06-27 18:21:34,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:34,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733437279] [2024-06-27 18:21:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:34,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:35,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:35,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733437279] [2024-06-27 18:21:35,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733437279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:35,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:35,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:35,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379396599] [2024-06-27 18:21:35,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:35,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:35,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:35,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:35,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:35,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:21:35,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 249 transitions, 2528 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:35,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:35,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:21:35,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:36,906 INFO L124 PetriNetUnfolderBase]: 7021/11036 cut-off events. [2024-06-27 18:21:36,906 INFO L125 PetriNetUnfolderBase]: For 353930/353933 co-relation queries the response was YES. [2024-06-27 18:21:36,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67033 conditions, 11036 events. 7021/11036 cut-off events. For 353930/353933 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 71363 event pairs, 2233 based on Foata normal form. 5/10809 useless extension candidates. Maximal degree in co-relation 66939. Up to 9906 conditions per place. [2024-06-27 18:21:37,032 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 238 selfloop transitions, 36 changer transitions 0/282 dead transitions. [2024-06-27 18:21:37,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 282 transitions, 3300 flow [2024-06-27 18:21:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:37,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:21:37,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47416413373860183 [2024-06-27 18:21:37,034 INFO L175 Difference]: Start difference. First operand has 207 places, 249 transitions, 2528 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:21:37,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 282 transitions, 3300 flow [2024-06-27 18:21:37,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 282 transitions, 3230 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 18:21:37,506 INFO L231 Difference]: Finished difference. Result has 211 places, 252 transitions, 2567 flow [2024-06-27 18:21:37,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2567, PETRI_PLACES=211, PETRI_TRANSITIONS=252} [2024-06-27 18:21:37,507 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 158 predicate places. [2024-06-27 18:21:37,507 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 252 transitions, 2567 flow [2024-06-27 18:21:37,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:37,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:37,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:37,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:21:37,508 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:37,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:37,508 INFO L85 PathProgramCache]: Analyzing trace with hash 590252323, now seen corresponding path program 3 times [2024-06-27 18:21:37,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:37,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554721625] [2024-06-27 18:21:37,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:37,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:38,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:38,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554721625] [2024-06-27 18:21:38,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554721625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:38,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:38,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:38,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261286667] [2024-06-27 18:21:38,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:38,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:38,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:38,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:38,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:38,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:21:38,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 252 transitions, 2567 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:38,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:38,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:21:38,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:39,992 INFO L124 PetriNetUnfolderBase]: 7012/11036 cut-off events. [2024-06-27 18:21:39,993 INFO L125 PetriNetUnfolderBase]: For 360112/360115 co-relation queries the response was YES. [2024-06-27 18:21:40,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67128 conditions, 11036 events. 7012/11036 cut-off events. For 360112/360115 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 71519 event pairs, 2237 based on Foata normal form. 5/10806 useless extension candidates. Maximal degree in co-relation 67032. Up to 9899 conditions per place. [2024-06-27 18:21:40,103 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 240 selfloop transitions, 35 changer transitions 0/283 dead transitions. [2024-06-27 18:21:40,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 283 transitions, 3225 flow [2024-06-27 18:21:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:40,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:40,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:21:40,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-06-27 18:21:40,104 INFO L175 Difference]: Start difference. First operand has 211 places, 252 transitions, 2567 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:21:40,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 283 transitions, 3225 flow [2024-06-27 18:21:40,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 283 transitions, 3137 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 18:21:40,541 INFO L231 Difference]: Finished difference. Result has 214 places, 252 transitions, 2555 flow [2024-06-27 18:21:40,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2555, PETRI_PLACES=214, PETRI_TRANSITIONS=252} [2024-06-27 18:21:40,541 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 161 predicate places. [2024-06-27 18:21:40,541 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 252 transitions, 2555 flow [2024-06-27 18:21:40,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:40,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:40,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:40,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:21:40,542 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:40,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:40,542 INFO L85 PathProgramCache]: Analyzing trace with hash 596198597, now seen corresponding path program 3 times [2024-06-27 18:21:40,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:40,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540185657] [2024-06-27 18:21:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:40,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:41,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:41,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:41,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540185657] [2024-06-27 18:21:41,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540185657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:41,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:41,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:41,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483834452] [2024-06-27 18:21:41,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:41,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:41,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:41,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:41,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:41,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:21:41,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 252 transitions, 2555 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:41,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:41,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:21:41,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:42,850 INFO L124 PetriNetUnfolderBase]: 7006/11119 cut-off events. [2024-06-27 18:21:42,850 INFO L125 PetriNetUnfolderBase]: For 365494/365497 co-relation queries the response was YES. [2024-06-27 18:21:42,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67056 conditions, 11119 events. 7006/11119 cut-off events. For 365494/365497 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 73002 event pairs, 2266 based on Foata normal form. 2/10863 useless extension candidates. Maximal degree in co-relation 66959. Up to 9929 conditions per place. [2024-06-27 18:21:42,971 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 234 selfloop transitions, 38 changer transitions 0/280 dead transitions. [2024-06-27 18:21:42,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 280 transitions, 3201 flow [2024-06-27 18:21:42,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 18:21:42,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47112462006079026 [2024-06-27 18:21:42,973 INFO L175 Difference]: Start difference. First operand has 214 places, 252 transitions, 2555 flow. Second operand 7 states and 155 transitions. [2024-06-27 18:21:42,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 280 transitions, 3201 flow [2024-06-27 18:21:43,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 280 transitions, 3078 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:43,545 INFO L231 Difference]: Finished difference. Result has 214 places, 252 transitions, 2514 flow [2024-06-27 18:21:43,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2514, PETRI_PLACES=214, PETRI_TRANSITIONS=252} [2024-06-27 18:21:43,545 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 161 predicate places. [2024-06-27 18:21:43,545 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 252 transitions, 2514 flow [2024-06-27 18:21:43,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:43,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:43,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:43,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:21:43,546 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:43,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:43,546 INFO L85 PathProgramCache]: Analyzing trace with hash 712368938, now seen corresponding path program 1 times [2024-06-27 18:21:43,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:43,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584953255] [2024-06-27 18:21:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:43,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:44,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:44,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584953255] [2024-06-27 18:21:44,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584953255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:44,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:44,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:21:44,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927238350] [2024-06-27 18:21:44,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:44,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:21:44,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:44,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:21:44,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:21:44,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:21:44,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 252 transitions, 2514 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:44,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:44,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:21:44,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:45,966 INFO L124 PetriNetUnfolderBase]: 7045/11049 cut-off events. [2024-06-27 18:21:45,966 INFO L125 PetriNetUnfolderBase]: For 371422/371422 co-relation queries the response was YES. [2024-06-27 18:21:46,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67285 conditions, 11049 events. 7045/11049 cut-off events. For 371422/371422 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 71416 event pairs, 2019 based on Foata normal form. 1/10790 useless extension candidates. Maximal degree in co-relation 67187. Up to 9978 conditions per place. [2024-06-27 18:21:46,107 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 275 selfloop transitions, 37 changer transitions 0/320 dead transitions. [2024-06-27 18:21:46,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 320 transitions, 3567 flow [2024-06-27 18:21:46,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-27 18:21:46,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491725768321513 [2024-06-27 18:21:46,108 INFO L175 Difference]: Start difference. First operand has 214 places, 252 transitions, 2514 flow. Second operand 9 states and 208 transitions. [2024-06-27 18:21:46,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 320 transitions, 3567 flow [2024-06-27 18:21:46,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 320 transitions, 3458 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:46,665 INFO L231 Difference]: Finished difference. Result has 219 places, 267 transitions, 2665 flow [2024-06-27 18:21:46,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2405, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2665, PETRI_PLACES=219, PETRI_TRANSITIONS=267} [2024-06-27 18:21:46,666 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 166 predicate places. [2024-06-27 18:21:46,666 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 267 transitions, 2665 flow [2024-06-27 18:21:46,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:46,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:46,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:46,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:21:46,666 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:46,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:46,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1988870552, now seen corresponding path program 1 times [2024-06-27 18:21:46,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:46,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717670890] [2024-06-27 18:21:46,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:46,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:47,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:47,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717670890] [2024-06-27 18:21:47,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717670890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:47,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:47,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:47,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291134807] [2024-06-27 18:21:47,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:47,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:47,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:47,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:47,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:47,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:21:47,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 267 transitions, 2665 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:47,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:47,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:21:47,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:48,925 INFO L124 PetriNetUnfolderBase]: 7087/10968 cut-off events. [2024-06-27 18:21:48,925 INFO L125 PetriNetUnfolderBase]: For 388923/388926 co-relation queries the response was YES. [2024-06-27 18:21:49,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68967 conditions, 10968 events. 7087/10968 cut-off events. For 388923/388926 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 69765 event pairs, 1999 based on Foata normal form. 3/10741 useless extension candidates. Maximal degree in co-relation 68866. Up to 10041 conditions per place. [2024-06-27 18:21:49,052 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 272 selfloop transitions, 38 changer transitions 0/318 dead transitions. [2024-06-27 18:21:49,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 318 transitions, 3795 flow [2024-06-27 18:21:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:21:49,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-27 18:21:49,053 INFO L175 Difference]: Start difference. First operand has 219 places, 267 transitions, 2665 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:21:49,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 318 transitions, 3795 flow [2024-06-27 18:21:49,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 318 transitions, 3729 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-27 18:21:49,705 INFO L231 Difference]: Finished difference. Result has 225 places, 283 transitions, 2915 flow [2024-06-27 18:21:49,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2599, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2915, PETRI_PLACES=225, PETRI_TRANSITIONS=283} [2024-06-27 18:21:49,706 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 172 predicate places. [2024-06-27 18:21:49,706 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 283 transitions, 2915 flow [2024-06-27 18:21:49,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:49,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:49,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:49,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:21:49,706 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:49,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:49,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2012623104, now seen corresponding path program 2 times [2024-06-27 18:21:49,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:49,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382624233] [2024-06-27 18:21:49,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:49,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:50,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:50,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382624233] [2024-06-27 18:21:50,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382624233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:50,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:50,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:21:50,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985963644] [2024-06-27 18:21:50,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:50,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:21:50,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:50,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:21:50,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:21:50,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:21:50,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 283 transitions, 2915 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:50,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:50,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:21:50,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:52,114 INFO L124 PetriNetUnfolderBase]: 7124/11022 cut-off events. [2024-06-27 18:21:52,115 INFO L125 PetriNetUnfolderBase]: For 408975/408978 co-relation queries the response was YES. [2024-06-27 18:21:52,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71003 conditions, 11022 events. 7124/11022 cut-off events. For 408975/408978 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 70164 event pairs, 1981 based on Foata normal form. 3/10794 useless extension candidates. Maximal degree in co-relation 70899. Up to 10080 conditions per place. [2024-06-27 18:21:52,234 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 269 selfloop transitions, 45 changer transitions 0/322 dead transitions. [2024-06-27 18:21:52,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 322 transitions, 3972 flow [2024-06-27 18:21:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:21:52,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:21:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:21:52,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-27 18:21:52,235 INFO L175 Difference]: Start difference. First operand has 225 places, 283 transitions, 2915 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:21:52,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 322 transitions, 3972 flow [2024-06-27 18:21:52,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 322 transitions, 3856 flow, removed 57 selfloop flow, removed 1 redundant places. [2024-06-27 18:21:52,876 INFO L231 Difference]: Finished difference. Result has 231 places, 290 transitions, 3010 flow [2024-06-27 18:21:52,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2833, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3010, PETRI_PLACES=231, PETRI_TRANSITIONS=290} [2024-06-27 18:21:52,877 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 178 predicate places. [2024-06-27 18:21:52,877 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 290 transitions, 3010 flow [2024-06-27 18:21:52,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:52,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:52,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:52,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:21:52,877 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:52,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:52,878 INFO L85 PathProgramCache]: Analyzing trace with hash -619834032, now seen corresponding path program 1 times [2024-06-27 18:21:52,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:52,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609265328] [2024-06-27 18:21:52,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:52,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:53,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:53,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609265328] [2024-06-27 18:21:53,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609265328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:53,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:53,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:21:53,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536573976] [2024-06-27 18:21:53,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:53,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:21:53,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:21:53,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:21:54,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:21:54,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 290 transitions, 3010 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:54,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:54,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:21:54,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:56,282 INFO L124 PetriNetUnfolderBase]: 6968/10527 cut-off events. [2024-06-27 18:21:56,282 INFO L125 PetriNetUnfolderBase]: For 450276/450305 co-relation queries the response was YES. [2024-06-27 18:21:56,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71495 conditions, 10527 events. 6968/10527 cut-off events. For 450276/450305 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 64254 event pairs, 1356 based on Foata normal form. 14/10417 useless extension candidates. Maximal degree in co-relation 71388. Up to 8987 conditions per place. [2024-06-27 18:21:56,413 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 253 selfloop transitions, 93 changer transitions 0/376 dead transitions. [2024-06-27 18:21:56,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 376 transitions, 4504 flow [2024-06-27 18:21:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:56,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-27 18:21:56,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-27 18:21:56,415 INFO L175 Difference]: Start difference. First operand has 231 places, 290 transitions, 3010 flow. Second operand 10 states and 248 transitions. [2024-06-27 18:21:56,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 376 transitions, 4504 flow [2024-06-27 18:21:57,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 376 transitions, 4421 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 18:21:57,130 INFO L231 Difference]: Finished difference. Result has 241 places, 304 transitions, 3668 flow [2024-06-27 18:21:57,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2927, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3668, PETRI_PLACES=241, PETRI_TRANSITIONS=304} [2024-06-27 18:21:57,131 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 188 predicate places. [2024-06-27 18:21:57,131 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 304 transitions, 3668 flow [2024-06-27 18:21:57,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:57,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:57,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:57,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:21:57,131 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:57,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:57,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1983160600, now seen corresponding path program 2 times [2024-06-27 18:21:57,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:57,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508220051] [2024-06-27 18:21:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:57,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:57,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:57,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508220051] [2024-06-27 18:21:57,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508220051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:57,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:57,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:21:57,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147372849] [2024-06-27 18:21:57,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:57,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:21:57,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:57,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:21:57,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:21:58,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:21:58,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 304 transitions, 3668 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:58,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:58,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:21:58,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:59,864 INFO L124 PetriNetUnfolderBase]: 7258/11323 cut-off events. [2024-06-27 18:21:59,865 INFO L125 PetriNetUnfolderBase]: For 464538/464538 co-relation queries the response was YES. [2024-06-27 18:21:59,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75445 conditions, 11323 events. 7258/11323 cut-off events. For 464538/464538 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 72975 event pairs, 2040 based on Foata normal form. 1/11079 useless extension candidates. Maximal degree in co-relation 75334. Up to 10338 conditions per place. [2024-06-27 18:22:00,028 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 303 selfloop transitions, 31 changer transitions 0/342 dead transitions. [2024-06-27 18:22:00,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 342 transitions, 4509 flow [2024-06-27 18:22:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:00,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 18:22:00,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-27 18:22:00,029 INFO L175 Difference]: Start difference. First operand has 241 places, 304 transitions, 3668 flow. Second operand 8 states and 176 transitions. [2024-06-27 18:22:00,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 342 transitions, 4509 flow [2024-06-27 18:22:01,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 342 transitions, 4047 flow, removed 185 selfloop flow, removed 5 redundant places. [2024-06-27 18:22:01,176 INFO L231 Difference]: Finished difference. Result has 244 places, 307 transitions, 3319 flow [2024-06-27 18:22:01,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3206, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3319, PETRI_PLACES=244, PETRI_TRANSITIONS=307} [2024-06-27 18:22:01,176 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 191 predicate places. [2024-06-27 18:22:01,176 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 307 transitions, 3319 flow [2024-06-27 18:22:01,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:01,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:01,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:01,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:22:01,177 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:01,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:01,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1243855528, now seen corresponding path program 3 times [2024-06-27 18:22:01,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:01,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989492942] [2024-06-27 18:22:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:01,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:01,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:01,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989492942] [2024-06-27 18:22:01,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989492942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:01,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:01,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:01,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949830424] [2024-06-27 18:22:01,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:01,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:01,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:01,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:01,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:22:01,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 307 transitions, 3319 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:01,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:01,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:22:01,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:03,602 INFO L124 PetriNetUnfolderBase]: 7255/11377 cut-off events. [2024-06-27 18:22:03,602 INFO L125 PetriNetUnfolderBase]: For 438666/438666 co-relation queries the response was YES. [2024-06-27 18:22:03,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72913 conditions, 11377 events. 7255/11377 cut-off events. For 438666/438666 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 73789 event pairs, 2305 based on Foata normal form. 1/11148 useless extension candidates. Maximal degree in co-relation 72802. Up to 10375 conditions per place. [2024-06-27 18:22:03,759 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 300 selfloop transitions, 28 changer transitions 0/336 dead transitions. [2024-06-27 18:22:03,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 336 transitions, 4175 flow [2024-06-27 18:22:03,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:03,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:03,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:22:03,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47416413373860183 [2024-06-27 18:22:03,760 INFO L175 Difference]: Start difference. First operand has 244 places, 307 transitions, 3319 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:22:03,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 336 transitions, 4175 flow [2024-06-27 18:22:04,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 336 transitions, 4081 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 18:22:04,532 INFO L231 Difference]: Finished difference. Result has 246 places, 307 transitions, 3287 flow [2024-06-27 18:22:04,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3225, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3287, PETRI_PLACES=246, PETRI_TRANSITIONS=307} [2024-06-27 18:22:04,532 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 193 predicate places. [2024-06-27 18:22:04,533 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 307 transitions, 3287 flow [2024-06-27 18:22:04,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:04,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:04,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:04,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:22:04,533 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:04,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:04,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1820346702, now seen corresponding path program 4 times [2024-06-27 18:22:04,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:04,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34096538] [2024-06-27 18:22:04,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:04,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:05,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:05,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34096538] [2024-06-27 18:22:05,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34096538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:05,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:05,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:05,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446721128] [2024-06-27 18:22:05,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:05,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:05,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:05,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:05,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:05,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:22:05,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 307 transitions, 3287 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:05,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:05,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:22:05,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:07,005 INFO L124 PetriNetUnfolderBase]: 7272/11408 cut-off events. [2024-06-27 18:22:07,005 INFO L125 PetriNetUnfolderBase]: For 449819/449819 co-relation queries the response was YES. [2024-06-27 18:22:07,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73180 conditions, 11408 events. 7272/11408 cut-off events. For 449819/449819 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 74111 event pairs, 2338 based on Foata normal form. 1/11177 useless extension candidates. Maximal degree in co-relation 73068. Up to 10429 conditions per place. [2024-06-27 18:22:07,140 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 302 selfloop transitions, 24 changer transitions 0/334 dead transitions. [2024-06-27 18:22:07,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 334 transitions, 4069 flow [2024-06-27 18:22:07,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:07,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-27 18:22:07,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45592705167173253 [2024-06-27 18:22:07,141 INFO L175 Difference]: Start difference. First operand has 246 places, 307 transitions, 3287 flow. Second operand 7 states and 150 transitions. [2024-06-27 18:22:07,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 334 transitions, 4069 flow [2024-06-27 18:22:07,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 334 transitions, 3949 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:07,921 INFO L231 Difference]: Finished difference. Result has 247 places, 311 transitions, 3291 flow [2024-06-27 18:22:07,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3189, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3291, PETRI_PLACES=247, PETRI_TRANSITIONS=311} [2024-06-27 18:22:07,922 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 194 predicate places. [2024-06-27 18:22:07,922 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 311 transitions, 3291 flow [2024-06-27 18:22:07,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:07,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:07,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:07,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:22:07,922 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:07,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:07,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1231602820, now seen corresponding path program 2 times [2024-06-27 18:22:07,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:07,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746635926] [2024-06-27 18:22:07,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:07,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:08,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:08,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:08,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746635926] [2024-06-27 18:22:08,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746635926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:08,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:08,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:22:08,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551218517] [2024-06-27 18:22:08,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:08,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:22:08,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:08,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:22:08,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:22:09,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:09,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 311 transitions, 3291 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:09,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:09,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:09,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:11,424 INFO L124 PetriNetUnfolderBase]: 7157/11390 cut-off events. [2024-06-27 18:22:11,424 INFO L125 PetriNetUnfolderBase]: For 491926/491980 co-relation queries the response was YES. [2024-06-27 18:22:11,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74268 conditions, 11390 events. 7157/11390 cut-off events. For 491926/491980 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 75602 event pairs, 2064 based on Foata normal form. 12/11115 useless extension candidates. Maximal degree in co-relation 74157. Up to 9635 conditions per place. [2024-06-27 18:22:11,559 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 293 selfloop transitions, 64 changer transitions 0/389 dead transitions. [2024-06-27 18:22:11,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 389 transitions, 4490 flow [2024-06-27 18:22:11,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-27 18:22:11,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-27 18:22:11,560 INFO L175 Difference]: Start difference. First operand has 247 places, 311 transitions, 3291 flow. Second operand 10 states and 242 transitions. [2024-06-27 18:22:11,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 389 transitions, 4490 flow [2024-06-27 18:22:12,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 389 transitions, 4426 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:12,335 INFO L231 Difference]: Finished difference. Result has 256 places, 324 transitions, 3668 flow [2024-06-27 18:22:12,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3227, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3668, PETRI_PLACES=256, PETRI_TRANSITIONS=324} [2024-06-27 18:22:12,335 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 203 predicate places. [2024-06-27 18:22:12,336 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 324 transitions, 3668 flow [2024-06-27 18:22:12,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:12,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:12,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:12,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:22:12,336 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:12,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:12,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1231372180, now seen corresponding path program 3 times [2024-06-27 18:22:12,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:12,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851597063] [2024-06-27 18:22:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:12,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:13,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851597063] [2024-06-27 18:22:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851597063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:13,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:13,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:22:13,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728661917] [2024-06-27 18:22:13,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:13,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:22:13,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:13,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:22:13,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:22:13,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:13,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 324 transitions, 3668 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:13,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:13,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:13,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:15,926 INFO L124 PetriNetUnfolderBase]: 7274/11573 cut-off events. [2024-06-27 18:22:15,926 INFO L125 PetriNetUnfolderBase]: For 535452/535506 co-relation queries the response was YES. [2024-06-27 18:22:16,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77933 conditions, 11573 events. 7274/11573 cut-off events. For 535452/535506 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 77095 event pairs, 2086 based on Foata normal form. 12/11298 useless extension candidates. Maximal degree in co-relation 77818. Up to 9687 conditions per place. [2024-06-27 18:22:16,056 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 290 selfloop transitions, 73 changer transitions 0/395 dead transitions. [2024-06-27 18:22:16,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 395 transitions, 4890 flow [2024-06-27 18:22:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:16,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-27 18:22:16,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-27 18:22:16,057 INFO L175 Difference]: Start difference. First operand has 256 places, 324 transitions, 3668 flow. Second operand 10 states and 242 transitions. [2024-06-27 18:22:16,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 395 transitions, 4890 flow [2024-06-27 18:22:16,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 395 transitions, 4709 flow, removed 79 selfloop flow, removed 3 redundant places. [2024-06-27 18:22:16,990 INFO L231 Difference]: Finished difference. Result has 264 places, 330 transitions, 3927 flow [2024-06-27 18:22:16,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3927, PETRI_PLACES=264, PETRI_TRANSITIONS=330} [2024-06-27 18:22:16,991 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 211 predicate places. [2024-06-27 18:22:16,991 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 330 transitions, 3927 flow [2024-06-27 18:22:16,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:16,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:16,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:16,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:22:16,992 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:16,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash 518414254, now seen corresponding path program 4 times [2024-06-27 18:22:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:16,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359240522] [2024-06-27 18:22:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:16,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:18,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:18,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359240522] [2024-06-27 18:22:18,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359240522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:18,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:18,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:22:18,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90595758] [2024-06-27 18:22:18,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:18,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:22:18,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:18,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:22:18,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:22:18,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:18,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 330 transitions, 3927 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:18,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:18,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:18,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:20,627 INFO L124 PetriNetUnfolderBase]: 7375/11787 cut-off events. [2024-06-27 18:22:20,628 INFO L125 PetriNetUnfolderBase]: For 559522/559576 co-relation queries the response was YES. [2024-06-27 18:22:20,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80116 conditions, 11787 events. 7375/11787 cut-off events. For 559522/559576 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 79180 event pairs, 2186 based on Foata normal form. 12/11498 useless extension candidates. Maximal degree in co-relation 79998. Up to 10094 conditions per place. [2024-06-27 18:22:20,757 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 321 selfloop transitions, 47 changer transitions 0/400 dead transitions. [2024-06-27 18:22:20,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 400 transitions, 5092 flow [2024-06-27 18:22:20,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-06-27 18:22:20,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042553191489362 [2024-06-27 18:22:20,758 INFO L175 Difference]: Start difference. First operand has 264 places, 330 transitions, 3927 flow. Second operand 10 states and 237 transitions. [2024-06-27 18:22:20,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 400 transitions, 5092 flow [2024-06-27 18:22:21,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 400 transitions, 4789 flow, removed 116 selfloop flow, removed 5 redundant places. [2024-06-27 18:22:21,864 INFO L231 Difference]: Finished difference. Result has 272 places, 337 transitions, 3986 flow [2024-06-27 18:22:21,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3629, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3986, PETRI_PLACES=272, PETRI_TRANSITIONS=337} [2024-06-27 18:22:21,865 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 219 predicate places. [2024-06-27 18:22:21,865 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 337 transitions, 3986 flow [2024-06-27 18:22:21,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:21,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:21,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:21,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:22:21,865 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:21,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:21,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1404092710, now seen corresponding path program 5 times [2024-06-27 18:22:21,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:21,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098611964] [2024-06-27 18:22:21,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:21,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:22,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:22,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098611964] [2024-06-27 18:22:22,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098611964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:22,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:22,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:22:22,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111602167] [2024-06-27 18:22:22,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:22,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:22:22,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:22,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:22:22,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:22:23,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:23,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 337 transitions, 3986 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:23,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:23,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:23,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:25,584 INFO L124 PetriNetUnfolderBase]: 7468/11961 cut-off events. [2024-06-27 18:22:25,585 INFO L125 PetriNetUnfolderBase]: For 571475/571529 co-relation queries the response was YES. [2024-06-27 18:22:25,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81101 conditions, 11961 events. 7468/11961 cut-off events. For 571475/571529 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 80795 event pairs, 2175 based on Foata normal form. 12/11664 useless extension candidates. Maximal degree in co-relation 80978. Up to 10124 conditions per place. [2024-06-27 18:22:25,717 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 302 selfloop transitions, 71 changer transitions 0/405 dead transitions. [2024-06-27 18:22:25,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 405 transitions, 5057 flow [2024-06-27 18:22:25,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:25,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:25,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-06-27 18:22:25,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127659574468085 [2024-06-27 18:22:25,718 INFO L175 Difference]: Start difference. First operand has 272 places, 337 transitions, 3986 flow. Second operand 10 states and 241 transitions. [2024-06-27 18:22:25,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 405 transitions, 5057 flow [2024-06-27 18:22:26,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 405 transitions, 4886 flow, removed 72 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:26,941 INFO L231 Difference]: Finished difference. Result has 280 places, 340 transitions, 4095 flow [2024-06-27 18:22:26,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4095, PETRI_PLACES=280, PETRI_TRANSITIONS=340} [2024-06-27 18:22:26,942 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 227 predicate places. [2024-06-27 18:22:26,942 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 340 transitions, 4095 flow [2024-06-27 18:22:26,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:26,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:26,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:26,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:22:26,943 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:26,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:26,943 INFO L85 PathProgramCache]: Analyzing trace with hash -406392472, now seen corresponding path program 6 times [2024-06-27 18:22:26,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:26,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783144037] [2024-06-27 18:22:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:26,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:27,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:27,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:27,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783144037] [2024-06-27 18:22:27,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783144037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:27,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:27,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:22:27,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352220863] [2024-06-27 18:22:27,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:27,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:22:27,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:27,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:22:27,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:22:28,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:28,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 340 transitions, 4095 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:28,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:28,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:28,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:30,637 INFO L124 PetriNetUnfolderBase]: 7577/12133 cut-off events. [2024-06-27 18:22:30,637 INFO L125 PetriNetUnfolderBase]: For 593053/593107 co-relation queries the response was YES. [2024-06-27 18:22:30,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82922 conditions, 12133 events. 7577/12133 cut-off events. For 593053/593107 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 82107 event pairs, 2238 based on Foata normal form. 12/11837 useless extension candidates. Maximal degree in co-relation 82795. Up to 10244 conditions per place. [2024-06-27 18:22:30,832 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 320 selfloop transitions, 56 changer transitions 0/408 dead transitions. [2024-06-27 18:22:30,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 408 transitions, 5317 flow [2024-06-27 18:22:30,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-06-27 18:22:30,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063829787234042 [2024-06-27 18:22:30,833 INFO L175 Difference]: Start difference. First operand has 280 places, 340 transitions, 4095 flow. Second operand 10 states and 238 transitions. [2024-06-27 18:22:30,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 408 transitions, 5317 flow [2024-06-27 18:22:32,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 408 transitions, 5108 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 18:22:32,336 INFO L231 Difference]: Finished difference. Result has 285 places, 345 transitions, 4297 flow [2024-06-27 18:22:32,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3886, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4297, PETRI_PLACES=285, PETRI_TRANSITIONS=345} [2024-06-27 18:22:32,337 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 232 predicate places. [2024-06-27 18:22:32,337 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 345 transitions, 4297 flow [2024-06-27 18:22:32,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:32,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:32,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:32,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:22:32,338 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:32,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:32,338 INFO L85 PathProgramCache]: Analyzing trace with hash -734969606, now seen corresponding path program 7 times [2024-06-27 18:22:32,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:32,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565337911] [2024-06-27 18:22:32,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:32,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:33,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:33,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565337911] [2024-06-27 18:22:33,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565337911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:33,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:33,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:22:33,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934557296] [2024-06-27 18:22:33,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:33,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:22:33,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:33,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:22:33,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:22:33,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:33,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 345 transitions, 4297 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:33,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:33,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:33,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:35,987 INFO L124 PetriNetUnfolderBase]: 7577/12176 cut-off events. [2024-06-27 18:22:35,988 INFO L125 PetriNetUnfolderBase]: For 588303/588357 co-relation queries the response was YES. [2024-06-27 18:22:36,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82509 conditions, 12176 events. 7577/12176 cut-off events. For 588303/588357 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 82712 event pairs, 2279 based on Foata normal form. 12/11869 useless extension candidates. Maximal degree in co-relation 82380. Up to 10537 conditions per place. [2024-06-27 18:22:36,147 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 345 selfloop transitions, 25 changer transitions 0/402 dead transitions. [2024-06-27 18:22:36,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 402 transitions, 5209 flow [2024-06-27 18:22:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:36,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-06-27 18:22:36,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 18:22:36,148 INFO L175 Difference]: Start difference. First operand has 285 places, 345 transitions, 4297 flow. Second operand 10 states and 230 transitions. [2024-06-27 18:22:36,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 402 transitions, 5209 flow [2024-06-27 18:22:37,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 402 transitions, 4932 flow, removed 116 selfloop flow, removed 5 redundant places. [2024-06-27 18:22:37,627 INFO L231 Difference]: Finished difference. Result has 289 places, 345 transitions, 4066 flow [2024-06-27 18:22:37,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3940, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4066, PETRI_PLACES=289, PETRI_TRANSITIONS=345} [2024-06-27 18:22:37,628 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 236 predicate places. [2024-06-27 18:22:37,628 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 345 transitions, 4066 flow [2024-06-27 18:22:37,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:37,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:37,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:37,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:22:37,628 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:37,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:37,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1295643176, now seen corresponding path program 5 times [2024-06-27 18:22:37,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:37,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651405671] [2024-06-27 18:22:37,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:37,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:38,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:38,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651405671] [2024-06-27 18:22:38,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651405671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:38,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:38,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:38,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620565238] [2024-06-27 18:22:38,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:38,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:38,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:38,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:38,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:38,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:22:38,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 345 transitions, 4066 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:38,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:38,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:22:38,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:40,347 INFO L124 PetriNetUnfolderBase]: 7820/12382 cut-off events. [2024-06-27 18:22:40,347 INFO L125 PetriNetUnfolderBase]: For 559231/559234 co-relation queries the response was YES. [2024-06-27 18:22:40,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82218 conditions, 12382 events. 7820/12382 cut-off events. For 559231/559234 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 82605 event pairs, 2542 based on Foata normal form. 3/12123 useless extension candidates. Maximal degree in co-relation 82087. Up to 11256 conditions per place. [2024-06-27 18:22:40,780 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 328 selfloop transitions, 32 changer transitions 0/368 dead transitions. [2024-06-27 18:22:40,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 368 transitions, 4986 flow [2024-06-27 18:22:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-27 18:22:40,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45288753799392095 [2024-06-27 18:22:40,781 INFO L175 Difference]: Start difference. First operand has 289 places, 345 transitions, 4066 flow. Second operand 7 states and 149 transitions. [2024-06-27 18:22:40,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 368 transitions, 4986 flow [2024-06-27 18:22:41,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 368 transitions, 4860 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 18:22:41,934 INFO L231 Difference]: Finished difference. Result has 288 places, 345 transitions, 4010 flow [2024-06-27 18:22:41,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3940, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4010, PETRI_PLACES=288, PETRI_TRANSITIONS=345} [2024-06-27 18:22:41,935 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 235 predicate places. [2024-06-27 18:22:41,935 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 345 transitions, 4010 flow [2024-06-27 18:22:41,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:41,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:41,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:41,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:22:41,935 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:41,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:41,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1302279656, now seen corresponding path program 6 times [2024-06-27 18:22:41,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:41,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301900023] [2024-06-27 18:22:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:41,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:42,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:42,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301900023] [2024-06-27 18:22:42,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301900023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:42,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:42,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:42,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372374108] [2024-06-27 18:22:42,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:42,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:22:42,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:42,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:22:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:22:42,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:22:42,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 345 transitions, 4010 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:42,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:42,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:22:42,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:44,719 INFO L124 PetriNetUnfolderBase]: 7817/12382 cut-off events. [2024-06-27 18:22:44,719 INFO L125 PetriNetUnfolderBase]: For 548043/548046 co-relation queries the response was YES. [2024-06-27 18:22:44,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81130 conditions, 12382 events. 7817/12382 cut-off events. For 548043/548046 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 82609 event pairs, 2548 based on Foata normal form. 3/12122 useless extension candidates. Maximal degree in co-relation 80998. Up to 11282 conditions per place. [2024-06-27 18:22:44,881 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 333 selfloop transitions, 24 changer transitions 0/365 dead transitions. [2024-06-27 18:22:44,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 365 transitions, 4782 flow [2024-06-27 18:22:44,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:22:44,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:22:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-27 18:22:44,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44376899696048633 [2024-06-27 18:22:44,882 INFO L175 Difference]: Start difference. First operand has 288 places, 345 transitions, 4010 flow. Second operand 7 states and 146 transitions. [2024-06-27 18:22:44,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 365 transitions, 4782 flow [2024-06-27 18:22:46,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 365 transitions, 4677 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:22:46,172 INFO L231 Difference]: Finished difference. Result has 290 places, 345 transitions, 3959 flow [2024-06-27 18:22:46,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3905, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3959, PETRI_PLACES=290, PETRI_TRANSITIONS=345} [2024-06-27 18:22:46,172 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 237 predicate places. [2024-06-27 18:22:46,172 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 345 transitions, 3959 flow [2024-06-27 18:22:46,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:46,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:46,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:46,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:22:46,173 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:46,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1111298948, now seen corresponding path program 3 times [2024-06-27 18:22:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:46,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986521854] [2024-06-27 18:22:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:46,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:46,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:46,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986521854] [2024-06-27 18:22:46,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986521854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:46,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:46,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:46,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251078283] [2024-06-27 18:22:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:46,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:46,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:46,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:46,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:46,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:22:46,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 345 transitions, 3959 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:46,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:46,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:22:46,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:49,304 INFO L124 PetriNetUnfolderBase]: 7814/12371 cut-off events. [2024-06-27 18:22:49,304 INFO L125 PetriNetUnfolderBase]: For 557684/557684 co-relation queries the response was YES. [2024-06-27 18:22:49,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81077 conditions, 12371 events. 7814/12371 cut-off events. For 557684/557684 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 82454 event pairs, 2555 based on Foata normal form. 1/12111 useless extension candidates. Maximal degree in co-relation 80944. Up to 11283 conditions per place. [2024-06-27 18:22:49,445 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 345 selfloop transitions, 19 changer transitions 0/372 dead transitions. [2024-06-27 18:22:49,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 372 transitions, 4787 flow [2024-06-27 18:22:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-27 18:22:49,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43617021276595747 [2024-06-27 18:22:49,446 INFO L175 Difference]: Start difference. First operand has 290 places, 345 transitions, 3959 flow. Second operand 8 states and 164 transitions. [2024-06-27 18:22:49,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 372 transitions, 4787 flow [2024-06-27 18:22:50,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 372 transitions, 4697 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:50,876 INFO L231 Difference]: Finished difference. Result has 292 places, 345 transitions, 3913 flow [2024-06-27 18:22:50,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3913, PETRI_PLACES=292, PETRI_TRANSITIONS=345} [2024-06-27 18:22:50,876 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 239 predicate places. [2024-06-27 18:22:50,876 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 345 transitions, 3913 flow [2024-06-27 18:22:50,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:50,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:50,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:50,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:22:50,877 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:50,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:50,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1309906152, now seen corresponding path program 1 times [2024-06-27 18:22:50,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:50,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335984446] [2024-06-27 18:22:50,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:50,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:51,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:51,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335984446] [2024-06-27 18:22:51,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335984446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:51,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:51,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:51,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051093799] [2024-06-27 18:22:51,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:51,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:51,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:51,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:51,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:51,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:22:51,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 345 transitions, 3913 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:51,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:51,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:22:51,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:53,812 INFO L124 PetriNetUnfolderBase]: 7267/11555 cut-off events. [2024-06-27 18:22:53,812 INFO L125 PetriNetUnfolderBase]: For 550657/550790 co-relation queries the response was YES. [2024-06-27 18:22:53,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75170 conditions, 11555 events. 7267/11555 cut-off events. For 550657/550790 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 77235 event pairs, 2364 based on Foata normal form. 109/11344 useless extension candidates. Maximal degree in co-relation 75036. Up to 10362 conditions per place. [2024-06-27 18:22:53,976 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 320 selfloop transitions, 21 changer transitions 0/377 dead transitions. [2024-06-27 18:22:53,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 377 transitions, 4759 flow [2024-06-27 18:22:53,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:53,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:53,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-27 18:22:53,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478723404255317 [2024-06-27 18:22:53,977 INFO L175 Difference]: Start difference. First operand has 292 places, 345 transitions, 3913 flow. Second operand 8 states and 171 transitions. [2024-06-27 18:22:53,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 377 transitions, 4759 flow [2024-06-27 18:22:55,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 377 transitions, 4691 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:22:55,201 INFO L231 Difference]: Finished difference. Result has 294 places, 352 transitions, 4008 flow [2024-06-27 18:22:55,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3845, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4008, PETRI_PLACES=294, PETRI_TRANSITIONS=352} [2024-06-27 18:22:55,202 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 241 predicate places. [2024-06-27 18:22:55,202 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 352 transitions, 4008 flow [2024-06-27 18:22:55,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:55,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:55,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:55,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:22:55,203 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:55,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:55,203 INFO L85 PathProgramCache]: Analyzing trace with hash 102459814, now seen corresponding path program 1 times [2024-06-27 18:22:55,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:55,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897558895] [2024-06-27 18:22:55,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:55,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:55,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:55,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897558895] [2024-06-27 18:22:55,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897558895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:55,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:55,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:22:55,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072650234] [2024-06-27 18:22:55,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:55,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:22:55,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:55,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:22:55,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:22:55,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:22:55,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 352 transitions, 4008 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:55,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:55,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:22:55,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:58,437 INFO L124 PetriNetUnfolderBase]: 7924/12543 cut-off events. [2024-06-27 18:22:58,437 INFO L125 PetriNetUnfolderBase]: For 590671/590671 co-relation queries the response was YES. [2024-06-27 18:22:58,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82616 conditions, 12543 events. 7924/12543 cut-off events. For 590671/590671 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 83773 event pairs, 2522 based on Foata normal form. 6/12282 useless extension candidates. Maximal degree in co-relation 82480. Up to 11306 conditions per place. [2024-06-27 18:22:58,596 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 358 selfloop transitions, 28 changer transitions 0/394 dead transitions. [2024-06-27 18:22:58,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 394 transitions, 4960 flow [2024-06-27 18:22:58,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:22:58,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:22:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-27 18:22:58,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47074468085106386 [2024-06-27 18:22:58,597 INFO L175 Difference]: Start difference. First operand has 294 places, 352 transitions, 4008 flow. Second operand 8 states and 177 transitions. [2024-06-27 18:22:58,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 394 transitions, 4960 flow [2024-06-27 18:22:59,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 394 transitions, 4855 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 18:22:59,791 INFO L231 Difference]: Finished difference. Result has 297 places, 355 transitions, 4025 flow [2024-06-27 18:22:59,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3903, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4025, PETRI_PLACES=297, PETRI_TRANSITIONS=355} [2024-06-27 18:22:59,792 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 244 predicate places. [2024-06-27 18:22:59,792 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 355 transitions, 4025 flow [2024-06-27 18:22:59,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:59,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:59,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:59,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:22:59,793 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:22:59,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash 54425894, now seen corresponding path program 2 times [2024-06-27 18:22:59,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:59,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732791069] [2024-06-27 18:22:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:59,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:00,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732791069] [2024-06-27 18:23:00,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732791069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:00,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:00,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:00,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676251297] [2024-06-27 18:23:00,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:00,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:00,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:00,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:00,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:00,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:00,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 355 transitions, 4025 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:00,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:00,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:00,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:03,059 INFO L124 PetriNetUnfolderBase]: 8146/12819 cut-off events. [2024-06-27 18:23:03,060 INFO L125 PetriNetUnfolderBase]: For 625126/625126 co-relation queries the response was YES. [2024-06-27 18:23:03,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85763 conditions, 12819 events. 8146/12819 cut-off events. For 625126/625126 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 85111 event pairs, 2502 based on Foata normal form. 6/12564 useless extension candidates. Maximal degree in co-relation 85626. Up to 11065 conditions per place. [2024-06-27 18:23:03,269 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 340 selfloop transitions, 63 changer transitions 0/411 dead transitions. [2024-06-27 18:23:03,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 411 transitions, 5455 flow [2024-06-27 18:23:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:23:03,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 18:23:03,270 INFO L175 Difference]: Start difference. First operand has 297 places, 355 transitions, 4025 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:23:03,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 411 transitions, 5455 flow [2024-06-27 18:23:04,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 411 transitions, 5355 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:04,971 INFO L231 Difference]: Finished difference. Result has 299 places, 364 transitions, 4243 flow [2024-06-27 18:23:04,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3925, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4243, PETRI_PLACES=299, PETRI_TRANSITIONS=364} [2024-06-27 18:23:04,972 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 246 predicate places. [2024-06-27 18:23:04,972 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 364 transitions, 4243 flow [2024-06-27 18:23:04,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:04,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:04,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:04,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:23:04,973 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:04,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:04,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1820337650, now seen corresponding path program 3 times [2024-06-27 18:23:04,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:04,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627232991] [2024-06-27 18:23:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:04,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:05,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:05,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627232991] [2024-06-27 18:23:05,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627232991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:05,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:05,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:05,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151386673] [2024-06-27 18:23:05,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:05,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:05,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:05,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:05,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:05,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:05,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 364 transitions, 4243 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:05,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:05,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:05,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:08,439 INFO L124 PetriNetUnfolderBase]: 8128/12819 cut-off events. [2024-06-27 18:23:08,439 INFO L125 PetriNetUnfolderBase]: For 630340/630340 co-relation queries the response was YES. [2024-06-27 18:23:08,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86019 conditions, 12819 events. 8128/12819 cut-off events. For 630340/630340 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 85366 event pairs, 2510 based on Foata normal form. 6/12558 useless extension candidates. Maximal degree in co-relation 85881. Up to 11054 conditions per place. [2024-06-27 18:23:08,616 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 342 selfloop transitions, 62 changer transitions 0/412 dead transitions. [2024-06-27 18:23:08,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 412 transitions, 5369 flow [2024-06-27 18:23:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:23:08,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:23:08,617 INFO L175 Difference]: Start difference. First operand has 299 places, 364 transitions, 4243 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:23:08,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 412 transitions, 5369 flow [2024-06-27 18:23:09,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 412 transitions, 5231 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-27 18:23:09,971 INFO L231 Difference]: Finished difference. Result has 304 places, 364 transitions, 4235 flow [2024-06-27 18:23:09,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4105, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4235, PETRI_PLACES=304, PETRI_TRANSITIONS=364} [2024-06-27 18:23:09,971 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 251 predicate places. [2024-06-27 18:23:09,972 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 364 transitions, 4235 flow [2024-06-27 18:23:09,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:09,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:09,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:09,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:23:09,972 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:09,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:09,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1970876518, now seen corresponding path program 4 times [2024-06-27 18:23:09,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:09,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391759469] [2024-06-27 18:23:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:09,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:10,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:10,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391759469] [2024-06-27 18:23:10,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391759469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:10,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:10,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:10,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870843094] [2024-06-27 18:23:10,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:10,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:10,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:10,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:10,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:10,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:10,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 364 transitions, 4235 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:10,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:10,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:10,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:13,283 INFO L124 PetriNetUnfolderBase]: 8230/13045 cut-off events. [2024-06-27 18:23:13,283 INFO L125 PetriNetUnfolderBase]: For 642762/642765 co-relation queries the response was YES. [2024-06-27 18:23:13,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86791 conditions, 13045 events. 8230/13045 cut-off events. For 642762/642765 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 87726 event pairs, 2540 based on Foata normal form. 6/12758 useless extension candidates. Maximal degree in co-relation 86651. Up to 11120 conditions per place. [2024-06-27 18:23:13,492 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 336 selfloop transitions, 66 changer transitions 0/410 dead transitions. [2024-06-27 18:23:13,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 410 transitions, 5411 flow [2024-06-27 18:23:13,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:13,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:23:13,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-06-27 18:23:13,493 INFO L175 Difference]: Start difference. First operand has 304 places, 364 transitions, 4235 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:23:13,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 410 transitions, 5411 flow [2024-06-27 18:23:15,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 410 transitions, 5262 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:23:15,170 INFO L231 Difference]: Finished difference. Result has 305 places, 367 transitions, 4290 flow [2024-06-27 18:23:15,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4092, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4290, PETRI_PLACES=305, PETRI_TRANSITIONS=367} [2024-06-27 18:23:15,171 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 252 predicate places. [2024-06-27 18:23:15,171 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 367 transitions, 4290 flow [2024-06-27 18:23:15,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:15,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:15,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:15,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:23:15,172 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:15,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1302294288, now seen corresponding path program 5 times [2024-06-27 18:23:15,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:15,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055041623] [2024-06-27 18:23:15,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:15,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:15,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:15,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055041623] [2024-06-27 18:23:15,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055041623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:15,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:15,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:15,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371348439] [2024-06-27 18:23:15,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:15,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:15,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:15,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:15,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:15,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:15,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 367 transitions, 4290 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:15,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:15,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:15,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:18,509 INFO L124 PetriNetUnfolderBase]: 8332/13165 cut-off events. [2024-06-27 18:23:18,509 INFO L125 PetriNetUnfolderBase]: For 659815/659818 co-relation queries the response was YES. [2024-06-27 18:23:18,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87993 conditions, 13165 events. 8332/13165 cut-off events. For 659815/659818 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 88226 event pairs, 2570 based on Foata normal form. 6/12884 useless extension candidates. Maximal degree in co-relation 87852. Up to 11186 conditions per place. [2024-06-27 18:23:18,699 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 338 selfloop transitions, 68 changer transitions 0/414 dead transitions. [2024-06-27 18:23:18,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 414 transitions, 5480 flow [2024-06-27 18:23:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:18,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 18:23:18,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:23:18,700 INFO L175 Difference]: Start difference. First operand has 305 places, 367 transitions, 4290 flow. Second operand 8 states and 188 transitions. [2024-06-27 18:23:18,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 414 transitions, 5480 flow [2024-06-27 18:23:20,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 414 transitions, 5251 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:20,419 INFO L231 Difference]: Finished difference. Result has 307 places, 370 transitions, 4269 flow [2024-06-27 18:23:20,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4079, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4269, PETRI_PLACES=307, PETRI_TRANSITIONS=370} [2024-06-27 18:23:20,420 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 254 predicate places. [2024-06-27 18:23:20,420 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 370 transitions, 4269 flow [2024-06-27 18:23:20,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:20,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:20,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:20,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:23:20,420 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:20,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:20,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1309645938, now seen corresponding path program 6 times [2024-06-27 18:23:20,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:20,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753080163] [2024-06-27 18:23:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:20,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:21,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:21,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753080163] [2024-06-27 18:23:21,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753080163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:21,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:21,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:21,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227215140] [2024-06-27 18:23:21,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:21,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:21,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:21,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:21,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:21,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:21,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 370 transitions, 4269 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:21,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:21,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:21,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:23,994 INFO L124 PetriNetUnfolderBase]: 8314/13111 cut-off events. [2024-06-27 18:23:23,994 INFO L125 PetriNetUnfolderBase]: For 651572/651575 co-relation queries the response was YES. [2024-06-27 18:23:24,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86772 conditions, 13111 events. 8314/13111 cut-off events. For 651572/651575 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 87603 event pairs, 2524 based on Foata normal form. 6/12836 useless extension candidates. Maximal degree in co-relation 86630. Up to 11175 conditions per place. [2024-06-27 18:23:24,149 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 330 selfloop transitions, 72 changer transitions 0/410 dead transitions. [2024-06-27 18:23:24,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 410 transitions, 5235 flow [2024-06-27 18:23:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:24,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:23:24,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48404255319148937 [2024-06-27 18:23:24,151 INFO L175 Difference]: Start difference. First operand has 307 places, 370 transitions, 4269 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:23:24,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 410 transitions, 5235 flow [2024-06-27 18:23:26,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 410 transitions, 5052 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 18:23:26,100 INFO L231 Difference]: Finished difference. Result has 310 places, 370 transitions, 4236 flow [2024-06-27 18:23:26,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4086, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4236, PETRI_PLACES=310, PETRI_TRANSITIONS=370} [2024-06-27 18:23:26,100 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 257 predicate places. [2024-06-27 18:23:26,101 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 370 transitions, 4236 flow [2024-06-27 18:23:26,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:26,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:26,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:26,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:23:26,101 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:26,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:26,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1125582725, now seen corresponding path program 1 times [2024-06-27 18:23:26,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:26,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720696311] [2024-06-27 18:23:26,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:26,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:27,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:27,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720696311] [2024-06-27 18:23:27,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720696311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:27,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:27,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:23:27,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499931979] [2024-06-27 18:23:27,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:27,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:23:27,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:27,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:23:27,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:23:27,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:23:27,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 370 transitions, 4236 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:27,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:27,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:23:27,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:29,696 INFO L124 PetriNetUnfolderBase]: 7761/12320 cut-off events. [2024-06-27 18:23:29,696 INFO L125 PetriNetUnfolderBase]: For 633176/633309 co-relation queries the response was YES. [2024-06-27 18:23:29,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81057 conditions, 12320 events. 7761/12320 cut-off events. For 633176/633309 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 82841 event pairs, 2480 based on Foata normal form. 107/12080 useless extension candidates. Maximal degree in co-relation 80914. Up to 11017 conditions per place. [2024-06-27 18:23:29,889 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 340 selfloop transitions, 28 changer transitions 0/404 dead transitions. [2024-06-27 18:23:29,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 404 transitions, 5125 flow [2024-06-27 18:23:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:29,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-27 18:23:29,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627659574468085 [2024-06-27 18:23:29,890 INFO L175 Difference]: Start difference. First operand has 310 places, 370 transitions, 4236 flow. Second operand 8 states and 174 transitions. [2024-06-27 18:23:29,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 404 transitions, 5125 flow [2024-06-27 18:23:31,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 404 transitions, 4946 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:23:31,266 INFO L231 Difference]: Finished difference. Result has 311 places, 375 transitions, 4208 flow [2024-06-27 18:23:31,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4062, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4208, PETRI_PLACES=311, PETRI_TRANSITIONS=375} [2024-06-27 18:23:31,267 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 258 predicate places. [2024-06-27 18:23:31,267 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 375 transitions, 4208 flow [2024-06-27 18:23:31,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:31,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:31,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:31,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:23:31,267 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:31,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:31,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1641033655, now seen corresponding path program 1 times [2024-06-27 18:23:31,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:31,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508491175] [2024-06-27 18:23:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:31,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:31,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:31,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:31,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508491175] [2024-06-27 18:23:31,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508491175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:31,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:31,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:31,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304949376] [2024-06-27 18:23:31,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:31,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:31,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:31,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:31,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:32,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:32,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 375 transitions, 4208 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:32,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:32,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:32,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:34,589 INFO L124 PetriNetUnfolderBase]: 8346/13129 cut-off events. [2024-06-27 18:23:34,589 INFO L125 PetriNetUnfolderBase]: For 660163/660163 co-relation queries the response was YES. [2024-06-27 18:23:34,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86749 conditions, 13129 events. 8346/13129 cut-off events. For 660163/660163 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 87682 event pairs, 2411 based on Foata normal form. 1/12831 useless extension candidates. Maximal degree in co-relation 86604. Up to 11886 conditions per place. [2024-06-27 18:23:34,778 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 382 selfloop transitions, 37 changer transitions 0/427 dead transitions. [2024-06-27 18:23:34,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 427 transitions, 5497 flow [2024-06-27 18:23:34,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:23:34,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-27 18:23:34,779 INFO L175 Difference]: Start difference. First operand has 311 places, 375 transitions, 4208 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:23:34,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 427 transitions, 5497 flow [2024-06-27 18:23:36,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 427 transitions, 5399 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 18:23:36,513 INFO L231 Difference]: Finished difference. Result has 315 places, 382 transitions, 4347 flow [2024-06-27 18:23:36,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4110, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4347, PETRI_PLACES=315, PETRI_TRANSITIONS=382} [2024-06-27 18:23:36,514 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 262 predicate places. [2024-06-27 18:23:36,514 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 382 transitions, 4347 flow [2024-06-27 18:23:36,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:36,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:36,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:36,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:23:36,515 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:36,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:36,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1635319735, now seen corresponding path program 2 times [2024-06-27 18:23:36,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:36,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854594234] [2024-06-27 18:23:36,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:36,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:37,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:37,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854594234] [2024-06-27 18:23:37,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854594234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:37,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:37,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:37,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295472676] [2024-06-27 18:23:37,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:37,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:37,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:37,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:37,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:37,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:37,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 382 transitions, 4347 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:37,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:37,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:37,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:39,824 INFO L124 PetriNetUnfolderBase]: 8363/13161 cut-off events. [2024-06-27 18:23:39,824 INFO L125 PetriNetUnfolderBase]: For 680181/680181 co-relation queries the response was YES. [2024-06-27 18:23:39,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87941 conditions, 13161 events. 8363/13161 cut-off events. For 680181/680181 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 87935 event pairs, 2411 based on Foata normal form. 1/12860 useless extension candidates. Maximal degree in co-relation 87794. Up to 11904 conditions per place. [2024-06-27 18:23:40,019 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 391 selfloop transitions, 41 changer transitions 0/440 dead transitions. [2024-06-27 18:23:40,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 440 transitions, 5650 flow [2024-06-27 18:23:40,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:23:40,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:23:40,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 223 transitions. [2024-06-27 18:23:40,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474468085106383 [2024-06-27 18:23:40,020 INFO L175 Difference]: Start difference. First operand has 315 places, 382 transitions, 4347 flow. Second operand 10 states and 223 transitions. [2024-06-27 18:23:40,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 440 transitions, 5650 flow [2024-06-27 18:23:41,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 440 transitions, 5496 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:41,357 INFO L231 Difference]: Finished difference. Result has 321 places, 385 transitions, 4354 flow [2024-06-27 18:23:41,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4223, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4354, PETRI_PLACES=321, PETRI_TRANSITIONS=385} [2024-06-27 18:23:41,358 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 268 predicate places. [2024-06-27 18:23:41,358 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 385 transitions, 4354 flow [2024-06-27 18:23:41,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:41,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:41,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:41,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:23:41,359 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:41,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:41,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1643662951, now seen corresponding path program 1 times [2024-06-27 18:23:41,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:41,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250477964] [2024-06-27 18:23:41,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:41,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:42,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:42,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:42,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250477964] [2024-06-27 18:23:42,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250477964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:42,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:42,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:23:42,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954894126] [2024-06-27 18:23:42,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:42,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:23:42,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:42,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:23:42,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:23:42,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:42,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 385 transitions, 4354 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:42,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:42,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:42,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:44,827 INFO L124 PetriNetUnfolderBase]: 8399/13201 cut-off events. [2024-06-27 18:23:44,828 INFO L125 PetriNetUnfolderBase]: For 697425/697425 co-relation queries the response was YES. [2024-06-27 18:23:44,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88396 conditions, 13201 events. 8399/13201 cut-off events. For 697425/697425 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 87830 event pairs, 2117 based on Foata normal form. 2/12905 useless extension candidates. Maximal degree in co-relation 88247. Up to 11840 conditions per place. [2024-06-27 18:23:45,014 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 394 selfloop transitions, 45 changer transitions 0/447 dead transitions. [2024-06-27 18:23:45,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 447 transitions, 5678 flow [2024-06-27 18:23:45,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:23:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:23:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 18:23:45,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-06-27 18:23:45,015 INFO L175 Difference]: Start difference. First operand has 321 places, 385 transitions, 4354 flow. Second operand 9 states and 211 transitions. [2024-06-27 18:23:45,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 447 transitions, 5678 flow [2024-06-27 18:23:46,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 447 transitions, 5568 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:23:46,219 INFO L231 Difference]: Finished difference. Result has 322 places, 389 transitions, 4427 flow [2024-06-27 18:23:46,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4244, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4427, PETRI_PLACES=322, PETRI_TRANSITIONS=389} [2024-06-27 18:23:46,219 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 269 predicate places. [2024-06-27 18:23:46,219 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 389 transitions, 4427 flow [2024-06-27 18:23:46,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:46,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:46,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:46,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:23:46,220 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:46,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1643654581, now seen corresponding path program 2 times [2024-06-27 18:23:46,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:46,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749201441] [2024-06-27 18:23:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:46,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:47,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:47,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749201441] [2024-06-27 18:23:47,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749201441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:47,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:47,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:23:47,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144107747] [2024-06-27 18:23:47,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:47,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:23:47,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:47,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:23:47,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:23:47,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:47,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 389 transitions, 4427 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:47,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:47,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:47,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:49,789 INFO L124 PetriNetUnfolderBase]: 8427/13250 cut-off events. [2024-06-27 18:23:49,789 INFO L125 PetriNetUnfolderBase]: For 715581/715581 co-relation queries the response was YES. [2024-06-27 18:23:49,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89302 conditions, 13250 events. 8427/13250 cut-off events. For 715581/715581 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 88514 event pairs, 2434 based on Foata normal form. 2/12951 useless extension candidates. Maximal degree in co-relation 89152. Up to 11969 conditions per place. [2024-06-27 18:23:50,002 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 398 selfloop transitions, 43 changer transitions 0/449 dead transitions. [2024-06-27 18:23:50,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 449 transitions, 5583 flow [2024-06-27 18:23:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:23:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:23:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 225 transitions. [2024-06-27 18:23:50,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-06-27 18:23:50,003 INFO L175 Difference]: Start difference. First operand has 322 places, 389 transitions, 4427 flow. Second operand 10 states and 225 transitions. [2024-06-27 18:23:50,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 449 transitions, 5583 flow [2024-06-27 18:23:51,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 449 transitions, 5456 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 18:23:51,624 INFO L231 Difference]: Finished difference. Result has 327 places, 391 transitions, 4441 flow [2024-06-27 18:23:51,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4320, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4441, PETRI_PLACES=327, PETRI_TRANSITIONS=391} [2024-06-27 18:23:51,625 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 274 predicate places. [2024-06-27 18:23:51,625 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 391 transitions, 4441 flow [2024-06-27 18:23:51,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:51,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:51,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:51,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:23:51,625 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:51,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:51,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1643654271, now seen corresponding path program 1 times [2024-06-27 18:23:51,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:51,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917686287] [2024-06-27 18:23:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:51,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:52,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:52,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:52,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917686287] [2024-06-27 18:23:52,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917686287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:52,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:52,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:23:52,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241760769] [2024-06-27 18:23:52,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:52,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:23:52,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:52,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:23:52,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:23:52,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:52,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 391 transitions, 4441 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:52,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:52,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:52,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:55,520 INFO L124 PetriNetUnfolderBase]: 8574/13449 cut-off events. [2024-06-27 18:23:55,520 INFO L125 PetriNetUnfolderBase]: For 739371/739371 co-relation queries the response was YES. [2024-06-27 18:23:55,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90645 conditions, 13449 events. 8574/13449 cut-off events. For 739371/739371 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 89750 event pairs, 2414 based on Foata normal form. 3/13151 useless extension candidates. Maximal degree in co-relation 90493. Up to 11770 conditions per place. [2024-06-27 18:23:55,728 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 407 selfloop transitions, 65 changer transitions 0/480 dead transitions. [2024-06-27 18:23:55,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 480 transitions, 6006 flow [2024-06-27 18:23:55,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 259 transitions. [2024-06-27 18:23:55,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5009671179883946 [2024-06-27 18:23:55,730 INFO L175 Difference]: Start difference. First operand has 327 places, 391 transitions, 4441 flow. Second operand 11 states and 259 transitions. [2024-06-27 18:23:55,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 480 transitions, 6006 flow [2024-06-27 18:23:57,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 480 transitions, 5905 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:23:57,653 INFO L231 Difference]: Finished difference. Result has 332 places, 409 transitions, 4710 flow [2024-06-27 18:23:57,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4710, PETRI_PLACES=332, PETRI_TRANSITIONS=409} [2024-06-27 18:23:57,653 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 279 predicate places. [2024-06-27 18:23:57,653 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 409 transitions, 4710 flow [2024-06-27 18:23:57,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:57,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:57,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:57,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:23:57,653 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:23:57,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:57,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1525448419, now seen corresponding path program 1 times [2024-06-27 18:23:57,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:57,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201119500] [2024-06-27 18:23:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:57,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:58,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:58,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201119500] [2024-06-27 18:23:58,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201119500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:58,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:58,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:23:58,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939479026] [2024-06-27 18:23:58,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:58,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:23:58,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:58,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:23:58,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:23:58,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:23:58,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 409 transitions, 4710 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:58,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:58,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:23:58,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:01,353 INFO L124 PetriNetUnfolderBase]: 8608/13455 cut-off events. [2024-06-27 18:24:01,353 INFO L125 PetriNetUnfolderBase]: For 760700/760703 co-relation queries the response was YES. [2024-06-27 18:24:01,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93575 conditions, 13455 events. 8608/13455 cut-off events. For 760700/760703 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 89575 event pairs, 2296 based on Foata normal form. 4/13146 useless extension candidates. Maximal degree in co-relation 93420. Up to 12195 conditions per place. [2024-06-27 18:24:01,530 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 416 selfloop transitions, 32 changer transitions 0/456 dead transitions. [2024-06-27 18:24:01,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 456 transitions, 5852 flow [2024-06-27 18:24:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:24:01,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 18:24:01,531 INFO L175 Difference]: Start difference. First operand has 332 places, 409 transitions, 4710 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:24:01,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 456 transitions, 5852 flow [2024-06-27 18:24:03,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 456 transitions, 5752 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-27 18:24:03,048 INFO L231 Difference]: Finished difference. Result has 336 places, 412 transitions, 4762 flow [2024-06-27 18:24:03,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4610, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4762, PETRI_PLACES=336, PETRI_TRANSITIONS=412} [2024-06-27 18:24:03,049 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 283 predicate places. [2024-06-27 18:24:03,049 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 412 transitions, 4762 flow [2024-06-27 18:24:03,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:03,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:03,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:03,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:24:03,049 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:03,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:03,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1525742485, now seen corresponding path program 3 times [2024-06-27 18:24:03,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:03,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92135477] [2024-06-27 18:24:03,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:03,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:03,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:03,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92135477] [2024-06-27 18:24:03,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92135477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:03,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:03,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:03,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025066939] [2024-06-27 18:24:03,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:03,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:03,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:03,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:03,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:03,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:03,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 412 transitions, 4762 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:03,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:03,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:03,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:06,348 INFO L124 PetriNetUnfolderBase]: 8650/13540 cut-off events. [2024-06-27 18:24:06,348 INFO L125 PetriNetUnfolderBase]: For 779426/779429 co-relation queries the response was YES. [2024-06-27 18:24:06,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94648 conditions, 13540 events. 8650/13540 cut-off events. For 779426/779429 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 90397 event pairs, 2436 based on Foata normal form. 3/13231 useless extension candidates. Maximal degree in co-relation 94491. Up to 12078 conditions per place. [2024-06-27 18:24:06,571 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 380 selfloop transitions, 77 changer transitions 0/465 dead transitions. [2024-06-27 18:24:06,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 465 transitions, 6530 flow [2024-06-27 18:24:06,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 18:24:06,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:24:06,572 INFO L175 Difference]: Start difference. First operand has 336 places, 412 transitions, 4762 flow. Second operand 8 states and 188 transitions. [2024-06-27 18:24:06,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 465 transitions, 6530 flow [2024-06-27 18:24:08,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 465 transitions, 6400 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:08,643 INFO L231 Difference]: Finished difference. Result has 338 places, 421 transitions, 5020 flow [2024-06-27 18:24:08,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4632, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5020, PETRI_PLACES=338, PETRI_TRANSITIONS=421} [2024-06-27 18:24:08,644 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 285 predicate places. [2024-06-27 18:24:08,644 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 421 transitions, 5020 flow [2024-06-27 18:24:08,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:08,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:08,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:08,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:24:08,644 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:08,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash 166140681, now seen corresponding path program 4 times [2024-06-27 18:24:08,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:08,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869342552] [2024-06-27 18:24:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:08,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:09,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:09,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869342552] [2024-06-27 18:24:09,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869342552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:09,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:09,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:09,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567170117] [2024-06-27 18:24:09,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:09,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:09,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:09,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:09,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 421 transitions, 5020 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:09,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:09,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:09,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:12,032 INFO L124 PetriNetUnfolderBase]: 8667/13575 cut-off events. [2024-06-27 18:24:12,032 INFO L125 PetriNetUnfolderBase]: For 802228/802231 co-relation queries the response was YES. [2024-06-27 18:24:12,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95795 conditions, 13575 events. 8667/13575 cut-off events. For 802228/802231 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 90682 event pairs, 2435 based on Foata normal form. 3/13265 useless extension candidates. Maximal degree in co-relation 95637. Up to 12096 conditions per place. [2024-06-27 18:24:12,228 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 377 selfloop transitions, 79 changer transitions 0/464 dead transitions. [2024-06-27 18:24:12,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 464 transitions, 6482 flow [2024-06-27 18:24:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:12,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:24:12,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 18:24:12,229 INFO L175 Difference]: Start difference. First operand has 338 places, 421 transitions, 5020 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:24:12,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 464 transitions, 6482 flow [2024-06-27 18:24:14,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 464 transitions, 6249 flow, removed 84 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:14,245 INFO L231 Difference]: Finished difference. Result has 341 places, 424 transitions, 5031 flow [2024-06-27 18:24:14,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4825, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5031, PETRI_PLACES=341, PETRI_TRANSITIONS=424} [2024-06-27 18:24:14,246 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 288 predicate places. [2024-06-27 18:24:14,246 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 424 transitions, 5031 flow [2024-06-27 18:24:14,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:14,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:14,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:14,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:24:14,246 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:14,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:14,247 INFO L85 PathProgramCache]: Analyzing trace with hash 258470205, now seen corresponding path program 1 times [2024-06-27 18:24:14,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:14,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62948975] [2024-06-27 18:24:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:14,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:14,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:14,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62948975] [2024-06-27 18:24:14,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62948975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:14,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:14,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:14,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788182534] [2024-06-27 18:24:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:14,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:14,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:14,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:14,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:14,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:14,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 424 transitions, 5031 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:14,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:14,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:14,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:17,615 INFO L124 PetriNetUnfolderBase]: 8823/13759 cut-off events. [2024-06-27 18:24:17,615 INFO L125 PetriNetUnfolderBase]: For 835846/835849 co-relation queries the response was YES. [2024-06-27 18:24:17,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97264 conditions, 13759 events. 8823/13759 cut-off events. For 835846/835849 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 91701 event pairs, 2402 based on Foata normal form. 5/13457 useless extension candidates. Maximal degree in co-relation 97106. Up to 12206 conditions per place. [2024-06-27 18:24:17,843 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 413 selfloop transitions, 66 changer transitions 0/487 dead transitions. [2024-06-27 18:24:17,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 487 transitions, 6752 flow [2024-06-27 18:24:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:24:17,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 18:24:17,844 INFO L175 Difference]: Start difference. First operand has 341 places, 424 transitions, 5031 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:24:17,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 487 transitions, 6752 flow [2024-06-27 18:24:20,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 487 transitions, 6629 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 18:24:20,056 INFO L231 Difference]: Finished difference. Result has 346 places, 441 transitions, 5346 flow [2024-06-27 18:24:20,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4908, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5346, PETRI_PLACES=346, PETRI_TRANSITIONS=441} [2024-06-27 18:24:20,057 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 293 predicate places. [2024-06-27 18:24:20,057 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 441 transitions, 5346 flow [2024-06-27 18:24:20,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:20,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:20,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:20,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:24:20,058 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:20,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1856062895, now seen corresponding path program 2 times [2024-06-27 18:24:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:20,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970656979] [2024-06-27 18:24:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:20,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:20,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:20,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970656979] [2024-06-27 18:24:20,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970656979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:20,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:20,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:20,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678264905] [2024-06-27 18:24:20,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:20,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:20,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:20,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:20,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:20,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:20,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 441 transitions, 5346 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:20,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:20,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:20,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:23,609 INFO L124 PetriNetUnfolderBase]: 8922/13868 cut-off events. [2024-06-27 18:24:23,610 INFO L125 PetriNetUnfolderBase]: For 877332/877335 co-relation queries the response was YES. [2024-06-27 18:24:23,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101061 conditions, 13868 events. 8922/13868 cut-off events. For 877332/877335 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 92125 event pairs, 2240 based on Foata normal form. 4/13553 useless extension candidates. Maximal degree in co-relation 100901. Up to 12370 conditions per place. [2024-06-27 18:24:23,832 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 425 selfloop transitions, 69 changer transitions 0/502 dead transitions. [2024-06-27 18:24:23,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 502 transitions, 7151 flow [2024-06-27 18:24:23,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:24:23,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 18:24:23,834 INFO L175 Difference]: Start difference. First operand has 346 places, 441 transitions, 5346 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:24:23,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 502 transitions, 7151 flow [2024-06-27 18:24:26,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 502 transitions, 7025 flow, removed 60 selfloop flow, removed 2 redundant places. [2024-06-27 18:24:26,313 INFO L231 Difference]: Finished difference. Result has 353 places, 458 transitions, 5726 flow [2024-06-27 18:24:26,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5226, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5726, PETRI_PLACES=353, PETRI_TRANSITIONS=458} [2024-06-27 18:24:26,313 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 300 predicate places. [2024-06-27 18:24:26,314 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 458 transitions, 5726 flow [2024-06-27 18:24:26,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:26,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:26,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:26,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:24:26,314 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:26,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:26,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1348312063, now seen corresponding path program 2 times [2024-06-27 18:24:26,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:26,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38951934] [2024-06-27 18:24:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:26,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:26,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:26,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38951934] [2024-06-27 18:24:26,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38951934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:26,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:26,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:26,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422300631] [2024-06-27 18:24:26,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:26,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:26,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:26,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:26,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:26,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:26,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 458 transitions, 5726 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:26,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:26,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:26,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:30,842 INFO L124 PetriNetUnfolderBase]: 9093/14120 cut-off events. [2024-06-27 18:24:30,843 INFO L125 PetriNetUnfolderBase]: For 927960/927963 co-relation queries the response was YES. [2024-06-27 18:24:30,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104702 conditions, 14120 events. 9093/14120 cut-off events. For 927960/927963 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 93930 event pairs, 2395 based on Foata normal form. 5/13812 useless extension candidates. Maximal degree in co-relation 104538. Up to 12480 conditions per place. [2024-06-27 18:24:31,053 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 432 selfloop transitions, 74 changer transitions 0/514 dead transitions. [2024-06-27 18:24:31,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 514 transitions, 7593 flow [2024-06-27 18:24:31,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:24:31,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-27 18:24:31,054 INFO L175 Difference]: Start difference. First operand has 353 places, 458 transitions, 5726 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:24:31,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 514 transitions, 7593 flow [2024-06-27 18:24:33,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 514 transitions, 7459 flow, removed 62 selfloop flow, removed 2 redundant places. [2024-06-27 18:24:33,677 INFO L231 Difference]: Finished difference. Result has 359 places, 468 transitions, 5889 flow [2024-06-27 18:24:33,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5592, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5889, PETRI_PLACES=359, PETRI_TRANSITIONS=468} [2024-06-27 18:24:33,677 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 306 predicate places. [2024-06-27 18:24:33,678 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 468 transitions, 5889 flow [2024-06-27 18:24:33,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:33,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:33,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:33,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:24:33,678 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:33,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:33,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1348312249, now seen corresponding path program 3 times [2024-06-27 18:24:33,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:33,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090727643] [2024-06-27 18:24:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:33,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:34,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:34,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090727643] [2024-06-27 18:24:34,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090727643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:34,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:34,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:34,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654696000] [2024-06-27 18:24:34,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:34,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:34,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:34,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:34,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:34,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:34,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 468 transitions, 5889 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:34,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:34,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:34,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:37,870 INFO L124 PetriNetUnfolderBase]: 9167/14249 cut-off events. [2024-06-27 18:24:37,870 INFO L125 PetriNetUnfolderBase]: For 949135/949138 co-relation queries the response was YES. [2024-06-27 18:24:38,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106024 conditions, 14249 events. 9167/14249 cut-off events. For 949135/949138 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 95080 event pairs, 2368 based on Foata normal form. 4/13924 useless extension candidates. Maximal degree in co-relation 105857. Up to 12666 conditions per place. [2024-06-27 18:24:38,089 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 429 selfloop transitions, 77 changer transitions 0/514 dead transitions. [2024-06-27 18:24:38,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 514 transitions, 7545 flow [2024-06-27 18:24:38,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:38,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:24:38,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 18:24:38,090 INFO L175 Difference]: Start difference. First operand has 359 places, 468 transitions, 5889 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:24:38,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 514 transitions, 7545 flow [2024-06-27 18:24:39,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 514 transitions, 7416 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:39,847 INFO L231 Difference]: Finished difference. Result has 364 places, 474 transitions, 6052 flow [2024-06-27 18:24:39,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5760, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6052, PETRI_PLACES=364, PETRI_TRANSITIONS=474} [2024-06-27 18:24:39,847 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 311 predicate places. [2024-06-27 18:24:39,847 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 474 transitions, 6052 flow [2024-06-27 18:24:39,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:39,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:39,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:39,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:24:39,848 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:39,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:39,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1348312435, now seen corresponding path program 5 times [2024-06-27 18:24:39,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:39,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6707341] [2024-06-27 18:24:39,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:39,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:40,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:40,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6707341] [2024-06-27 18:24:40,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6707341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:40,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:40,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:40,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539101754] [2024-06-27 18:24:40,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:40,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:40,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:40,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:40,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:40,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:40,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 474 transitions, 6052 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:40,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:40,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:40,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:44,147 INFO L124 PetriNetUnfolderBase]: 9224/14354 cut-off events. [2024-06-27 18:24:44,148 INFO L125 PetriNetUnfolderBase]: For 972058/972061 co-relation queries the response was YES. [2024-06-27 18:24:44,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106755 conditions, 14354 events. 9224/14354 cut-off events. For 972058/972061 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 95951 event pairs, 2420 based on Foata normal form. 3/14023 useless extension candidates. Maximal degree in co-relation 106587. Up to 12832 conditions per place. [2024-06-27 18:24:44,362 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 425 selfloop transitions, 88 changer transitions 0/521 dead transitions. [2024-06-27 18:24:44,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 521 transitions, 7906 flow [2024-06-27 18:24:44,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:44,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:44,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:24:44,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48404255319148937 [2024-06-27 18:24:44,363 INFO L175 Difference]: Start difference. First operand has 364 places, 474 transitions, 6052 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:24:44,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 521 transitions, 7906 flow [2024-06-27 18:24:46,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 521 transitions, 7754 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 18:24:46,838 INFO L231 Difference]: Finished difference. Result has 368 places, 483 transitions, 6242 flow [2024-06-27 18:24:46,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5900, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6242, PETRI_PLACES=368, PETRI_TRANSITIONS=483} [2024-06-27 18:24:46,839 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 315 predicate places. [2024-06-27 18:24:46,839 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 483 transitions, 6242 flow [2024-06-27 18:24:46,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:46,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:46,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:46,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:24:46,840 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:46,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:46,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1348305553, now seen corresponding path program 3 times [2024-06-27 18:24:46,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:46,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032900614] [2024-06-27 18:24:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:46,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:47,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:47,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032900614] [2024-06-27 18:24:47,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032900614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:47,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:47,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:47,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558041244] [2024-06-27 18:24:47,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:47,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:47,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:47,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:47,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:47,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:47,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 483 transitions, 6242 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:47,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:47,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:47,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:51,042 INFO L124 PetriNetUnfolderBase]: 9215/14316 cut-off events. [2024-06-27 18:24:51,043 INFO L125 PetriNetUnfolderBase]: For 985429/985432 co-relation queries the response was YES. [2024-06-27 18:24:51,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106405 conditions, 14316 events. 9215/14316 cut-off events. For 985429/985432 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 95623 event pairs, 2396 based on Foata normal form. 5/13999 useless extension candidates. Maximal degree in co-relation 106236. Up to 12650 conditions per place. [2024-06-27 18:24:51,270 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 442 selfloop transitions, 76 changer transitions 0/526 dead transitions. [2024-06-27 18:24:51,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 526 transitions, 7822 flow [2024-06-27 18:24:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:51,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:24:51,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 18:24:51,272 INFO L175 Difference]: Start difference. First operand has 368 places, 483 transitions, 6242 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:24:51,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 526 transitions, 7822 flow [2024-06-27 18:24:54,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 526 transitions, 7668 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:54,086 INFO L231 Difference]: Finished difference. Result has 373 places, 483 transitions, 6246 flow [2024-06-27 18:24:54,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6088, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6246, PETRI_PLACES=373, PETRI_TRANSITIONS=483} [2024-06-27 18:24:54,086 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 320 predicate places. [2024-06-27 18:24:54,086 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 483 transitions, 6246 flow [2024-06-27 18:24:54,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:54,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:54,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:54,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:24:54,087 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:54,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1348432405, now seen corresponding path program 6 times [2024-06-27 18:24:54,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:54,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288148646] [2024-06-27 18:24:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:54,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:54,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:54,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288148646] [2024-06-27 18:24:54,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288148646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:54,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:54,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:54,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096979673] [2024-06-27 18:24:54,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:54,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:54,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:54,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:54,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:54,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:24:54,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 483 transitions, 6246 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:54,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:54,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:24:54,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:58,396 INFO L124 PetriNetUnfolderBase]: 9212/14412 cut-off events. [2024-06-27 18:24:58,396 INFO L125 PetriNetUnfolderBase]: For 993789/993789 co-relation queries the response was YES. [2024-06-27 18:24:58,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106575 conditions, 14412 events. 9212/14412 cut-off events. For 993789/993789 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 97061 event pairs, 2472 based on Foata normal form. 1/14076 useless extension candidates. Maximal degree in co-relation 106405. Up to 13104 conditions per place. [2024-06-27 18:24:58,603 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 479 selfloop transitions, 31 changer transitions 0/518 dead transitions. [2024-06-27 18:24:58,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 518 transitions, 7424 flow [2024-06-27 18:24:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-27 18:24:58,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654255319148936 [2024-06-27 18:24:58,604 INFO L175 Difference]: Start difference. First operand has 373 places, 483 transitions, 6246 flow. Second operand 8 states and 175 transitions. [2024-06-27 18:24:58,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 518 transitions, 7424 flow [2024-06-27 18:25:01,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 518 transitions, 7281 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:01,204 INFO L231 Difference]: Finished difference. Result has 376 places, 483 transitions, 6171 flow [2024-06-27 18:25:01,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6103, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6171, PETRI_PLACES=376, PETRI_TRANSITIONS=483} [2024-06-27 18:25:01,205 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 323 predicate places. [2024-06-27 18:25:01,205 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 483 transitions, 6171 flow [2024-06-27 18:25:01,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:01,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:01,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:01,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:25:01,205 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:01,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:01,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1348078881, now seen corresponding path program 2 times [2024-06-27 18:25:01,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:01,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076200363] [2024-06-27 18:25:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:01,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:02,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:02,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:02,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076200363] [2024-06-27 18:25:02,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076200363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:02,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:02,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:02,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930080580] [2024-06-27 18:25:02,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:02,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:02,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:02,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:02,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:02,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:02,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 483 transitions, 6171 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:02,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:02,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:02,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:05,567 INFO L124 PetriNetUnfolderBase]: 9276/14091 cut-off events. [2024-06-27 18:25:05,567 INFO L125 PetriNetUnfolderBase]: For 1011383/1011383 co-relation queries the response was YES. [2024-06-27 18:25:05,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106602 conditions, 14091 events. 9276/14091 cut-off events. For 1011383/1011383 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 90344 event pairs, 2065 based on Foata normal form. 1/13896 useless extension candidates. Maximal degree in co-relation 106431. Up to 13041 conditions per place. [2024-06-27 18:25:05,806 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 483 selfloop transitions, 70 changer transitions 0/561 dead transitions. [2024-06-27 18:25:05,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 561 transitions, 8137 flow [2024-06-27 18:25:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:25:05,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:25:05,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-27 18:25:05,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-27 18:25:05,807 INFO L175 Difference]: Start difference. First operand has 376 places, 483 transitions, 6171 flow. Second operand 9 states and 198 transitions. [2024-06-27 18:25:05,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 561 transitions, 8137 flow