./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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 [2024-06-28 01:44:30,485 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:44:30,551 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:44:30,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:44:30,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:44:30,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:44:30,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:44:30,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:44:30,581 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:44:30,584 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:44:30,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:44:30,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:44:30,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:44:30,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:44:30,586 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:44:30,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:44:30,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:44:30,587 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:44:30,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:44:30,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:44:30,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:44:30,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:44:30,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:44:30,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:44:30,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:44:30,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:44:30,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:44:30,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:44:30,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:44:30,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:44:30,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:44:30,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:44:30,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:44:30,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:44:30,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:44:30,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:44:30,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:44:30,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:44:30,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:44:30,592 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:44:30,592 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:44:30,592 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:44:30,592 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:44:30,593 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:44:30,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:44:30,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:44:30,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:44:30,833 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:44:30,833 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:44:30,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 01:44:30,978 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:44:30,978 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:44:30,979 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 01:44:32,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:44:32,242 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:44:32,242 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 01:44:32,257 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/305ad4371/e184e5827a404558b6dc0281c5b77ea8/FLAG6078fe22b [2024-06-28 01:44:32,272 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/305ad4371/e184e5827a404558b6dc0281c5b77ea8 [2024-06-28 01:44:32,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:44:32,274 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:44:32,277 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:44:32,277 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:44:32,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:44:32,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:44:30" (1/2) ... [2024-06-28 01:44:32,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d7de22 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:44:32, skipping insertion in model container [2024-06-28 01:44:32,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:44:30" (1/2) ... [2024-06-28 01:44:32,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@38023774 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:44:32, skipping insertion in model container [2024-06-28 01:44:32,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:44:32" (2/2) ... [2024-06-28 01:44:32,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d7de22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32, skipping insertion in model container [2024-06-28 01:44:32,285 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:44:32" (2/2) ... [2024-06-28 01:44:32,285 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:44:32,334 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:44:32,335 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:44:32,335 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:44:32,336 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:44:32,336 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-28 01:44:32,367 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:44:32,517 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/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[995,1008] [2024-06-28 01:44:32,696 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:44:32,706 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:44:32,737 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/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:44:32,816 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:44:32,855 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:44:32,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32 WrapperNode [2024-06-28 01:44:32,856 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:44:32,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:44:32,857 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:44:32,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:44:32,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32" (1/1) ... [2024-06-28 01:44:32,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32" (1/1) ... [2024-06-28 01:44:32,922 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 109 [2024-06-28 01:44:32,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:44:32,923 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:44:32,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:44:32,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:44:32,932 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32" (1/1) ... [2024-06-28 01:44:32,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32" (1/1) ... [2024-06-28 01:44:32,945 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32" (1/1) ... [2024-06-28 01:44:32,966 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]. [2024-06-28 01:44:32,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32" (1/1) ... [2024-06-28 01:44:32,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32" (1/1) ... [2024-06-28 01:44:32,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32" (1/1) ... [2024-06-28 01:44:32,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32" (1/1) ... [2024-06-28 01:44:32,975 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32" (1/1) ... [2024-06-28 01:44:32,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32" (1/1) ... [2024-06-28 01:44:32,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:44:32,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:44:32,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:44:32,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:44:32,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32" (1/1) ... [2024-06-28 01:44:32,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:44:32,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:44:33,004 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) [2024-06-28 01:44:33,011 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 [2024-06-28 01:44:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:44:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:44:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:44:33,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:44:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:44:33,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:44:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:44:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:44:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:44:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:44:33,037 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:44:33,149 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:44:33,151 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:44:33,447 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:44:33,447 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:44:33,600 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:44:33,601 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:44:33,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:44:33 BoogieIcfgContainer [2024-06-28 01:44:33,602 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:44:33,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:44:33,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:44:33,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:44:33,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:44:30" (1/4) ... [2024-06-28 01:44:33,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e75ada9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:44:33, skipping insertion in model container [2024-06-28 01:44:33,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:44:32" (2/4) ... [2024-06-28 01:44:33,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e75ada9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:44:33, skipping insertion in model container [2024-06-28 01:44:33,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:32" (3/4) ... [2024-06-28 01:44:33,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e75ada9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:44:33, skipping insertion in model container [2024-06-28 01:44:33,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:44:33" (4/4) ... [2024-06-28 01:44:33,612 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 01:44:33,629 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:44:33,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:44:33,630 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:44:33,666 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:44:33,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 80 flow [2024-06-28 01:44:33,723 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-06-28 01:44:33,723 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:44:33,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-28 01:44:33,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 80 flow [2024-06-28 01:44:33,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 74 flow [2024-06-28 01:44:33,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:44:33,747 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;@11585b39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:44:33,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:44:33,750 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:44:33,750 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:44:33,751 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:44:33,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:33,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:44:33,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:33,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:33,757 INFO L85 PathProgramCache]: Analyzing trace with hash 308678707, now seen corresponding path program 1 times [2024-06-28 01:44:33,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:33,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741359152] [2024-06-28 01:44:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:33,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:34,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:34,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741359152] [2024-06-28 01:44:34,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741359152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:34,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:34,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:44:34,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954184629] [2024-06-28 01:44:34,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:34,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:44:34,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:44:34,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:44:34,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-28 01:44:34,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:34,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:34,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-28 01:44:34,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:34,644 INFO L124 PetriNetUnfolderBase]: 475/841 cut-off events. [2024-06-28 01:44:34,645 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-28 01:44:34,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1657 conditions, 841 events. 475/841 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4213 event pairs, 182 based on Foata normal form. 43/824 useless extension candidates. Maximal degree in co-relation 1646. Up to 787 conditions per place. [2024-06-28 01:44:34,653 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 30 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 01:44:34,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 165 flow [2024-06-28 01:44:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:44:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:44:34,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-06-28 01:44:34,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-06-28 01:44:34,665 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 74 flow. Second operand 3 states and 74 transitions. [2024-06-28 01:44:34,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 165 flow [2024-06-28 01:44:34,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:34,669 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 98 flow [2024-06-28 01:44:34,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-06-28 01:44:34,673 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-28 01:44:34,673 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 98 flow [2024-06-28 01:44:34,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:34,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:34,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:44:34,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:44:34,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:34,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:34,676 INFO L85 PathProgramCache]: Analyzing trace with hash 308678893, now seen corresponding path program 1 times [2024-06-28 01:44:34,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:34,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066280973] [2024-06-28 01:44:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:34,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:34,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:34,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066280973] [2024-06-28 01:44:34,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066280973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:34,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:34,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:44:34,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721973655] [2024-06-28 01:44:34,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:34,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:44:34,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:34,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:44:34,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:44:34,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 36 [2024-06-28 01:44:34,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:34,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:34,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 36 [2024-06-28 01:44:34,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:34,845 INFO L124 PetriNetUnfolderBase]: 152/358 cut-off events. [2024-06-28 01:44:34,845 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-28 01:44:34,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 358 events. 152/358 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1853 event pairs, 52 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 690. Up to 227 conditions per place. [2024-06-28 01:44:34,848 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 23 selfloop transitions, 3 changer transitions 2/45 dead transitions. [2024-06-28 01:44:34,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 169 flow [2024-06-28 01:44:34,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:44:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:44:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-28 01:44:34,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2024-06-28 01:44:34,850 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 98 flow. Second operand 3 states and 82 transitions. [2024-06-28 01:44:34,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 169 flow [2024-06-28 01:44:34,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:44:34,854 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 90 flow [2024-06-28 01:44:34,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-06-28 01:44:34,855 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-28 01:44:34,855 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 90 flow [2024-06-28 01:44:34,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:34,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:34,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:34,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:44:34,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:34,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:34,861 INFO L85 PathProgramCache]: Analyzing trace with hash 287676551, now seen corresponding path program 1 times [2024-06-28 01:44:34,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:34,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029430278] [2024-06-28 01:44:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:34,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:35,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:35,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029430278] [2024-06-28 01:44:35,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029430278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:35,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:35,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:44:35,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433994261] [2024-06-28 01:44:35,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:35,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:44:35,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:35,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:44:35,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:44:35,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-28 01:44:35,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:35,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:35,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-28 01:44:35,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:35,413 INFO L124 PetriNetUnfolderBase]: 342/705 cut-off events. [2024-06-28 01:44:35,414 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-06-28 01:44:35,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 705 events. 342/705 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3706 event pairs, 160 based on Foata normal form. 2/676 useless extension candidates. Maximal degree in co-relation 1443. Up to 562 conditions per place. [2024-06-28 01:44:35,418 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 34 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2024-06-28 01:44:35,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 216 flow [2024-06-28 01:44:35,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:44:35,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:44:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-06-28 01:44:35,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-28 01:44:35,422 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 90 flow. Second operand 4 states and 88 transitions. [2024-06-28 01:44:35,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 216 flow [2024-06-28 01:44:35,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:35,424 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 133 flow [2024-06-28 01:44:35,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-06-28 01:44:35,425 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-06-28 01:44:35,426 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 133 flow [2024-06-28 01:44:35,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:35,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:35,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:35,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:44:35,426 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:35,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:35,427 INFO L85 PathProgramCache]: Analyzing trace with hash 328039780, now seen corresponding path program 1 times [2024-06-28 01:44:35,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:35,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989755723] [2024-06-28 01:44:35,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:35,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:35,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:35,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989755723] [2024-06-28 01:44:35,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989755723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:35,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:35,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:44:35,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011643979] [2024-06-28 01:44:35,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:35,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:44:35,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:35,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:44:35,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:44:35,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-28 01:44:35,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:35,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:35,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-28 01:44:35,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:35,997 INFO L124 PetriNetUnfolderBase]: 418/828 cut-off events. [2024-06-28 01:44:35,997 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-06-28 01:44:35,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 828 events. 418/828 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4413 event pairs, 148 based on Foata normal form. 3/794 useless extension candidates. Maximal degree in co-relation 1862. Up to 629 conditions per place. [2024-06-28 01:44:36,001 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 46 selfloop transitions, 13 changer transitions 0/68 dead transitions. [2024-06-28 01:44:36,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 68 transitions, 339 flow [2024-06-28 01:44:36,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:44:36,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:44:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-28 01:44:36,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-28 01:44:36,005 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 133 flow. Second operand 5 states and 111 transitions. [2024-06-28 01:44:36,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 68 transitions, 339 flow [2024-06-28 01:44:36,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 68 transitions, 332 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 01:44:36,009 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 214 flow [2024-06-28 01:44:36,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-06-28 01:44:36,010 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-06-28 01:44:36,010 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 214 flow [2024-06-28 01:44:36,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:36,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:36,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:36,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:44:36,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:36,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:36,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1440771760, now seen corresponding path program 1 times [2024-06-28 01:44:36,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:36,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995392540] [2024-06-28 01:44:36,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:36,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:36,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:36,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995392540] [2024-06-28 01:44:36,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995392540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:36,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:36,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:44:36,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191867054] [2024-06-28 01:44:36,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:36,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:44:36,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:36,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:44:36,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:44:36,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-28 01:44:36,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:36,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:36,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-28 01:44:36,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:36,762 INFO L124 PetriNetUnfolderBase]: 428/766 cut-off events. [2024-06-28 01:44:36,762 INFO L125 PetriNetUnfolderBase]: For 804/804 co-relation queries the response was YES. [2024-06-28 01:44:36,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2191 conditions, 766 events. 428/766 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3786 event pairs, 79 based on Foata normal form. 3/758 useless extension candidates. Maximal degree in co-relation 2172. Up to 593 conditions per place. [2024-06-28 01:44:36,768 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 56 selfloop transitions, 23 changer transitions 0/88 dead transitions. [2024-06-28 01:44:36,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 524 flow [2024-06-28 01:44:36,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:36,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 01:44:36,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6157407407407407 [2024-06-28 01:44:36,770 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 214 flow. Second operand 6 states and 133 transitions. [2024-06-28 01:44:36,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 524 flow [2024-06-28 01:44:36,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 520 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:44:36,776 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 362 flow [2024-06-28 01:44:36,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2024-06-28 01:44:36,780 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-06-28 01:44:36,781 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 362 flow [2024-06-28 01:44:36,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:36,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:36,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:36,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:44:36,782 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:36,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:36,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1714252953, now seen corresponding path program 1 times [2024-06-28 01:44:36,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:36,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761130843] [2024-06-28 01:44:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:36,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:37,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:37,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761130843] [2024-06-28 01:44:37,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761130843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:37,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:37,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:37,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978059263] [2024-06-28 01:44:37,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:37,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:37,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:37,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:37,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:37,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-28 01:44:37,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:37,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:37,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-28 01:44:37,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:37,602 INFO L124 PetriNetUnfolderBase]: 438/784 cut-off events. [2024-06-28 01:44:37,602 INFO L125 PetriNetUnfolderBase]: For 1536/1536 co-relation queries the response was YES. [2024-06-28 01:44:37,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 784 events. 438/784 cut-off events. For 1536/1536 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3926 event pairs, 37 based on Foata normal form. 6/779 useless extension candidates. Maximal degree in co-relation 2652. Up to 561 conditions per place. [2024-06-28 01:44:37,606 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 59 selfloop transitions, 25 changer transitions 0/93 dead transitions. [2024-06-28 01:44:37,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 93 transitions, 646 flow [2024-06-28 01:44:37,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:37,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-28 01:44:37,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912698412698413 [2024-06-28 01:44:37,608 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 362 flow. Second operand 7 states and 149 transitions. [2024-06-28 01:44:37,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 93 transitions, 646 flow [2024-06-28 01:44:37,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 93 transitions, 626 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-06-28 01:44:37,613 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 409 flow [2024-06-28 01:44:37,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=409, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-28 01:44:37,615 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2024-06-28 01:44:37,615 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 409 flow [2024-06-28 01:44:37,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:37,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:37,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:37,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:44:37,616 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:37,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:37,616 INFO L85 PathProgramCache]: Analyzing trace with hash 896135998, now seen corresponding path program 1 times [2024-06-28 01:44:37,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:37,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171612217] [2024-06-28 01:44:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:37,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:37,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:37,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171612217] [2024-06-28 01:44:37,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171612217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:37,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:37,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:44:37,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581014306] [2024-06-28 01:44:37,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:37,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:44:37,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:37,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:44:37,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:44:38,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:38,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 409 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:38,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:38,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:38,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:38,265 INFO L124 PetriNetUnfolderBase]: 514/1025 cut-off events. [2024-06-28 01:44:38,265 INFO L125 PetriNetUnfolderBase]: For 2010/2010 co-relation queries the response was YES. [2024-06-28 01:44:38,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3275 conditions, 1025 events. 514/1025 cut-off events. For 2010/2010 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5584 event pairs, 156 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 3246. Up to 838 conditions per place. [2024-06-28 01:44:38,270 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 53 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-28 01:44:38,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 559 flow [2024-06-28 01:44:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:44:38,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:44:38,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-28 01:44:38,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-28 01:44:38,271 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 409 flow. Second operand 5 states and 86 transitions. [2024-06-28 01:44:38,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 559 flow [2024-06-28 01:44:38,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 500 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:38,274 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 378 flow [2024-06-28 01:44:38,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-28 01:44:38,275 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2024-06-28 01:44:38,275 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 378 flow [2024-06-28 01:44:38,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:38,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:38,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:38,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:44:38,276 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:38,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1997468519, now seen corresponding path program 1 times [2024-06-28 01:44:38,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:38,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021047511] [2024-06-28 01:44:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:38,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:38,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:38,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021047511] [2024-06-28 01:44:38,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021047511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:38,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:38,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:38,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322260826] [2024-06-28 01:44:38,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:38,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:38,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:38,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:38,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:38,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 378 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:38,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:38,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:38,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:38,971 INFO L124 PetriNetUnfolderBase]: 508/976 cut-off events. [2024-06-28 01:44:38,971 INFO L125 PetriNetUnfolderBase]: For 1854/1854 co-relation queries the response was YES. [2024-06-28 01:44:38,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3048 conditions, 976 events. 508/976 cut-off events. For 1854/1854 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5177 event pairs, 151 based on Foata normal form. 3/947 useless extension candidates. Maximal degree in co-relation 3017. Up to 796 conditions per place. [2024-06-28 01:44:38,976 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 60 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2024-06-28 01:44:38,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 574 flow [2024-06-28 01:44:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 01:44:38,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:44:38,978 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 378 flow. Second operand 6 states and 104 transitions. [2024-06-28 01:44:38,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 574 flow [2024-06-28 01:44:38,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 549 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:38,982 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 397 flow [2024-06-28 01:44:38,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=397, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2024-06-28 01:44:38,982 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2024-06-28 01:44:38,982 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 397 flow [2024-06-28 01:44:38,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:38,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:38,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:38,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:44:38,983 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:38,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:38,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1785337626, now seen corresponding path program 1 times [2024-06-28 01:44:38,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:38,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546782847] [2024-06-28 01:44:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:38,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:39,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:39,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546782847] [2024-06-28 01:44:39,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546782847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:39,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:39,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:39,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213441592] [2024-06-28 01:44:39,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:39,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:39,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:39,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:39,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:39,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:39,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 397 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:39,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:39,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:39,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:39,643 INFO L124 PetriNetUnfolderBase]: 579/1132 cut-off events. [2024-06-28 01:44:39,643 INFO L125 PetriNetUnfolderBase]: For 2516/2516 co-relation queries the response was YES. [2024-06-28 01:44:39,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3781 conditions, 1132 events. 579/1132 cut-off events. For 2516/2516 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6193 event pairs, 286 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 3750. Up to 872 conditions per place. [2024-06-28 01:44:39,649 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 66 selfloop transitions, 17 changer transitions 0/90 dead transitions. [2024-06-28 01:44:39,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 90 transitions, 733 flow [2024-06-28 01:44:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:39,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 01:44:39,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 01:44:39,650 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 397 flow. Second operand 7 states and 117 transitions. [2024-06-28 01:44:39,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 90 transitions, 733 flow [2024-06-28 01:44:39,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 90 transitions, 707 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:39,655 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 525 flow [2024-06-28 01:44:39,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=525, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2024-06-28 01:44:39,656 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2024-06-28 01:44:39,656 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 525 flow [2024-06-28 01:44:39,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:39,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:39,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:39,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:44:39,656 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:39,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:39,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1518744768, now seen corresponding path program 2 times [2024-06-28 01:44:39,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:39,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303644338] [2024-06-28 01:44:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:39,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:40,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:40,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303644338] [2024-06-28 01:44:40,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303644338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:40,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:40,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:40,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301933787] [2024-06-28 01:44:40,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:40,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:40,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:40,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:40,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:40,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:40,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 525 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:40,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:40,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:40,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:40,382 INFO L124 PetriNetUnfolderBase]: 630/1216 cut-off events. [2024-06-28 01:44:40,383 INFO L125 PetriNetUnfolderBase]: For 3500/3500 co-relation queries the response was YES. [2024-06-28 01:44:40,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4469 conditions, 1216 events. 630/1216 cut-off events. For 3500/3500 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6776 event pairs, 117 based on Foata normal form. 2/1171 useless extension candidates. Maximal degree in co-relation 4435. Up to 866 conditions per place. [2024-06-28 01:44:40,390 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 79 selfloop transitions, 34 changer transitions 0/120 dead transitions. [2024-06-28 01:44:40,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 120 transitions, 1138 flow [2024-06-28 01:44:40,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:40,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 01:44:40,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2024-06-28 01:44:40,392 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 525 flow. Second operand 7 states and 127 transitions. [2024-06-28 01:44:40,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 120 transitions, 1138 flow [2024-06-28 01:44:40,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 120 transitions, 1121 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:40,400 INFO L231 Difference]: Finished difference. Result has 78 places, 91 transitions, 852 flow [2024-06-28 01:44:40,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=852, PETRI_PLACES=78, PETRI_TRANSITIONS=91} [2024-06-28 01:44:40,401 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 38 predicate places. [2024-06-28 01:44:40,401 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 91 transitions, 852 flow [2024-06-28 01:44:40,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:40,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:40,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:44:40,402 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:40,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2101506610, now seen corresponding path program 3 times [2024-06-28 01:44:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:40,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818036582] [2024-06-28 01:44:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:40,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:40,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:40,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818036582] [2024-06-28 01:44:40,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818036582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:40,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:40,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:40,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310595897] [2024-06-28 01:44:40,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:40,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:40,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:40,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:40,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:40,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:40,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 91 transitions, 852 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:40,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:40,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:40,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:41,061 INFO L124 PetriNetUnfolderBase]: 625/1244 cut-off events. [2024-06-28 01:44:41,061 INFO L125 PetriNetUnfolderBase]: For 4759/4759 co-relation queries the response was YES. [2024-06-28 01:44:41,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4936 conditions, 1244 events. 625/1244 cut-off events. For 4759/4759 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7158 event pairs, 296 based on Foata normal form. 1/1195 useless extension candidates. Maximal degree in co-relation 4898. Up to 1004 conditions per place. [2024-06-28 01:44:41,069 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 85 selfloop transitions, 13 changer transitions 0/105 dead transitions. [2024-06-28 01:44:41,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 1099 flow [2024-06-28 01:44:41,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 01:44:41,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 01:44:41,070 INFO L175 Difference]: Start difference. First operand has 78 places, 91 transitions, 852 flow. Second operand 6 states and 100 transitions. [2024-06-28 01:44:41,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 1099 flow [2024-06-28 01:44:41,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 105 transitions, 1078 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:41,079 INFO L231 Difference]: Finished difference. Result has 82 places, 91 transitions, 868 flow [2024-06-28 01:44:41,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=868, PETRI_PLACES=82, PETRI_TRANSITIONS=91} [2024-06-28 01:44:41,079 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 42 predicate places. [2024-06-28 01:44:41,080 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 91 transitions, 868 flow [2024-06-28 01:44:41,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:41,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:41,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:41,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:44:41,080 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:41,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash -698781223, now seen corresponding path program 1 times [2024-06-28 01:44:41,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:41,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821127620] [2024-06-28 01:44:41,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:41,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:41,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:41,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821127620] [2024-06-28 01:44:41,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821127620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:41,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:41,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:41,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024651017] [2024-06-28 01:44:41,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:41,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:41,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:41,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:41,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:41,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:41,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 91 transitions, 868 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:41,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:41,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:41,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:41,961 INFO L124 PetriNetUnfolderBase]: 751/1403 cut-off events. [2024-06-28 01:44:41,961 INFO L125 PetriNetUnfolderBase]: For 5492/5492 co-relation queries the response was YES. [2024-06-28 01:44:41,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5560 conditions, 1403 events. 751/1403 cut-off events. For 5492/5492 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7984 event pairs, 136 based on Foata normal form. 6/1364 useless extension candidates. Maximal degree in co-relation 5520. Up to 838 conditions per place. [2024-06-28 01:44:41,969 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 99 selfloop transitions, 38 changer transitions 0/144 dead transitions. [2024-06-28 01:44:41,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 144 transitions, 1464 flow [2024-06-28 01:44:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:41,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 01:44:41,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 01:44:41,970 INFO L175 Difference]: Start difference. First operand has 82 places, 91 transitions, 868 flow. Second operand 8 states and 152 transitions. [2024-06-28 01:44:41,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 144 transitions, 1464 flow [2024-06-28 01:44:41,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 144 transitions, 1394 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:41,978 INFO L231 Difference]: Finished difference. Result has 88 places, 103 transitions, 999 flow [2024-06-28 01:44:41,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=999, PETRI_PLACES=88, PETRI_TRANSITIONS=103} [2024-06-28 01:44:41,979 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2024-06-28 01:44:41,979 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 103 transitions, 999 flow [2024-06-28 01:44:41,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:41,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:41,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:41,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:44:41,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:41,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:41,980 INFO L85 PathProgramCache]: Analyzing trace with hash 869655237, now seen corresponding path program 2 times [2024-06-28 01:44:41,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:41,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105589007] [2024-06-28 01:44:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:41,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:42,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:42,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105589007] [2024-06-28 01:44:42,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105589007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:42,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:42,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:42,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092522011] [2024-06-28 01:44:42,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:42,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:42,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:42,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:42,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:42,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:42,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 103 transitions, 999 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:42,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:42,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:42,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:42,924 INFO L124 PetriNetUnfolderBase]: 980/1868 cut-off events. [2024-06-28 01:44:42,924 INFO L125 PetriNetUnfolderBase]: For 7929/7929 co-relation queries the response was YES. [2024-06-28 01:44:42,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7786 conditions, 1868 events. 980/1868 cut-off events. For 7929/7929 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11470 event pairs, 377 based on Foata normal form. 6/1807 useless extension candidates. Maximal degree in co-relation 7743. Up to 1094 conditions per place. [2024-06-28 01:44:42,940 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 99 selfloop transitions, 42 changer transitions 0/148 dead transitions. [2024-06-28 01:44:42,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 148 transitions, 1552 flow [2024-06-28 01:44:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:42,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:42,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 01:44:42,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:44:42,941 INFO L175 Difference]: Start difference. First operand has 88 places, 103 transitions, 999 flow. Second operand 8 states and 140 transitions. [2024-06-28 01:44:42,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 148 transitions, 1552 flow [2024-06-28 01:44:42,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 148 transitions, 1516 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:42,957 INFO L231 Difference]: Finished difference. Result has 94 places, 116 transitions, 1168 flow [2024-06-28 01:44:42,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1168, PETRI_PLACES=94, PETRI_TRANSITIONS=116} [2024-06-28 01:44:42,958 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 54 predicate places. [2024-06-28 01:44:42,958 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 116 transitions, 1168 flow [2024-06-28 01:44:42,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:42,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:42,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:42,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:44:42,959 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:42,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:42,959 INFO L85 PathProgramCache]: Analyzing trace with hash -728450553, now seen corresponding path program 3 times [2024-06-28 01:44:42,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:42,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383731048] [2024-06-28 01:44:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:42,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:43,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:43,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383731048] [2024-06-28 01:44:43,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383731048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:43,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:43,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:43,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045087089] [2024-06-28 01:44:43,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:43,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:43,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:43,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:43,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:43,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:43,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 116 transitions, 1168 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:43,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:43,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:43,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:43,799 INFO L124 PetriNetUnfolderBase]: 1034/1962 cut-off events. [2024-06-28 01:44:43,799 INFO L125 PetriNetUnfolderBase]: For 9785/9785 co-relation queries the response was YES. [2024-06-28 01:44:43,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8674 conditions, 1962 events. 1034/1962 cut-off events. For 9785/9785 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12191 event pairs, 402 based on Foata normal form. 3/1892 useless extension candidates. Maximal degree in co-relation 8628. Up to 1526 conditions per place. [2024-06-28 01:44:43,816 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 125 selfloop transitions, 21 changer transitions 0/153 dead transitions. [2024-06-28 01:44:43,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 153 transitions, 1683 flow [2024-06-28 01:44:43,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:43,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:43,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 01:44:43,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-28 01:44:43,817 INFO L175 Difference]: Start difference. First operand has 94 places, 116 transitions, 1168 flow. Second operand 7 states and 123 transitions. [2024-06-28 01:44:43,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 153 transitions, 1683 flow [2024-06-28 01:44:43,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 153 transitions, 1641 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:43,838 INFO L231 Difference]: Finished difference. Result has 97 places, 122 transitions, 1234 flow [2024-06-28 01:44:43,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1234, PETRI_PLACES=97, PETRI_TRANSITIONS=122} [2024-06-28 01:44:43,839 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 57 predicate places. [2024-06-28 01:44:43,839 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 122 transitions, 1234 flow [2024-06-28 01:44:43,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:43,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:43,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:43,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:44:43,840 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:43,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1143769023, now seen corresponding path program 4 times [2024-06-28 01:44:43,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:43,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822795790] [2024-06-28 01:44:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:43,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:44,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:44,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822795790] [2024-06-28 01:44:44,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822795790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:44,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:44,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:44,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588248717] [2024-06-28 01:44:44,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:44,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:44,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:44,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:44,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:44,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:44,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 122 transitions, 1234 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:44,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:44,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:44,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:44,742 INFO L124 PetriNetUnfolderBase]: 1028/1932 cut-off events. [2024-06-28 01:44:44,742 INFO L125 PetriNetUnfolderBase]: For 10040/10040 co-relation queries the response was YES. [2024-06-28 01:44:44,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8694 conditions, 1932 events. 1028/1932 cut-off events. For 10040/10040 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11905 event pairs, 403 based on Foata normal form. 3/1866 useless extension candidates. Maximal degree in co-relation 8647. Up to 1588 conditions per place. [2024-06-28 01:44:44,755 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 120 selfloop transitions, 16 changer transitions 0/143 dead transitions. [2024-06-28 01:44:44,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 143 transitions, 1593 flow [2024-06-28 01:44:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 01:44:44,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-28 01:44:44,757 INFO L175 Difference]: Start difference. First operand has 97 places, 122 transitions, 1234 flow. Second operand 8 states and 127 transitions. [2024-06-28 01:44:44,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 143 transitions, 1593 flow [2024-06-28 01:44:44,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 143 transitions, 1554 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:44,776 INFO L231 Difference]: Finished difference. Result has 102 places, 122 transitions, 1233 flow [2024-06-28 01:44:44,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1233, PETRI_PLACES=102, PETRI_TRANSITIONS=122} [2024-06-28 01:44:44,776 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 62 predicate places. [2024-06-28 01:44:44,776 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 122 transitions, 1233 flow [2024-06-28 01:44:44,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:44,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:44,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:44,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:44:44,777 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:44,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:44,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1009888985, now seen corresponding path program 1 times [2024-06-28 01:44:44,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:44,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772830607] [2024-06-28 01:44:44,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:44,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:45,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:45,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772830607] [2024-06-28 01:44:45,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772830607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:45,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:45,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:45,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765550470] [2024-06-28 01:44:45,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:45,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:45,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:45,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:45,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:45,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 122 transitions, 1233 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-28 01:44:45,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:45,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:45,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:45,833 INFO L124 PetriNetUnfolderBase]: 1069/2015 cut-off events. [2024-06-28 01:44:45,833 INFO L125 PetriNetUnfolderBase]: For 9689/9689 co-relation queries the response was YES. [2024-06-28 01:44:45,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8877 conditions, 2015 events. 1069/2015 cut-off events. For 9689/9689 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 12547 event pairs, 169 based on Foata normal form. 1/1931 useless extension candidates. Maximal degree in co-relation 8828. Up to 1489 conditions per place. [2024-06-28 01:44:45,848 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 120 selfloop transitions, 41 changer transitions 0/168 dead transitions. [2024-06-28 01:44:45,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 168 transitions, 1829 flow [2024-06-28 01:44:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:45,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:44:45,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-28 01:44:45,849 INFO L175 Difference]: Start difference. First operand has 102 places, 122 transitions, 1233 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:44:45,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 168 transitions, 1829 flow [2024-06-28 01:44:45,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 168 transitions, 1775 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:45,866 INFO L231 Difference]: Finished difference. Result has 104 places, 129 transitions, 1325 flow [2024-06-28 01:44:45,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1325, PETRI_PLACES=104, PETRI_TRANSITIONS=129} [2024-06-28 01:44:45,866 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 64 predicate places. [2024-06-28 01:44:45,866 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 129 transitions, 1325 flow [2024-06-28 01:44:45,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-28 01:44:45,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:45,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:45,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:44:45,866 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:45,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:45,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1846567691, now seen corresponding path program 2 times [2024-06-28 01:44:45,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:45,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448384255] [2024-06-28 01:44:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:45,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:46,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:46,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448384255] [2024-06-28 01:44:46,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448384255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:46,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:46,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:46,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589187790] [2024-06-28 01:44:46,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:46,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:46,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:46,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:46,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:46,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:46,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 129 transitions, 1325 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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) [2024-06-28 01:44:46,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:46,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:46,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:46,651 INFO L124 PetriNetUnfolderBase]: 1106/1970 cut-off events. [2024-06-28 01:44:46,651 INFO L125 PetriNetUnfolderBase]: For 10653/10653 co-relation queries the response was YES. [2024-06-28 01:44:46,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9314 conditions, 1970 events. 1106/1970 cut-off events. For 10653/10653 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11697 event pairs, 155 based on Foata normal form. 1/1923 useless extension candidates. Maximal degree in co-relation 9264. Up to 1427 conditions per place. [2024-06-28 01:44:46,662 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 109 selfloop transitions, 51 changer transitions 0/167 dead transitions. [2024-06-28 01:44:46,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 167 transitions, 1887 flow [2024-06-28 01:44:46,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:46,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 01:44:46,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 01:44:46,663 INFO L175 Difference]: Start difference. First operand has 104 places, 129 transitions, 1325 flow. Second operand 7 states and 132 transitions. [2024-06-28 01:44:46,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 167 transitions, 1887 flow [2024-06-28 01:44:46,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 167 transitions, 1833 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:46,683 INFO L231 Difference]: Finished difference. Result has 108 places, 140 transitions, 1521 flow [2024-06-28 01:44:46,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1521, PETRI_PLACES=108, PETRI_TRANSITIONS=140} [2024-06-28 01:44:46,684 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 68 predicate places. [2024-06-28 01:44:46,684 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 140 transitions, 1521 flow [2024-06-28 01:44:46,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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) [2024-06-28 01:44:46,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:46,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:46,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:44:46,684 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:46,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:46,684 INFO L85 PathProgramCache]: Analyzing trace with hash -588665362, now seen corresponding path program 1 times [2024-06-28 01:44:46,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:46,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893329650] [2024-06-28 01:44:46,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:46,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:47,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:47,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893329650] [2024-06-28 01:44:47,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893329650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:47,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:47,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:47,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156429766] [2024-06-28 01:44:47,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:47,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:47,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:47,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:47,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:47,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 140 transitions, 1521 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:47,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:47,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:47,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:47,768 INFO L124 PetriNetUnfolderBase]: 1160/2132 cut-off events. [2024-06-28 01:44:47,768 INFO L125 PetriNetUnfolderBase]: For 12479/12479 co-relation queries the response was YES. [2024-06-28 01:44:47,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10323 conditions, 2132 events. 1160/2132 cut-off events. For 12479/12479 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13190 event pairs, 208 based on Foata normal form. 3/2069 useless extension candidates. Maximal degree in co-relation 10269. Up to 1279 conditions per place. [2024-06-28 01:44:47,779 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 137 selfloop transitions, 52 changer transitions 0/196 dead transitions. [2024-06-28 01:44:47,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 196 transitions, 2300 flow [2024-06-28 01:44:47,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:47,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 01:44:47,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2024-06-28 01:44:47,780 INFO L175 Difference]: Start difference. First operand has 108 places, 140 transitions, 1521 flow. Second operand 9 states and 170 transitions. [2024-06-28 01:44:47,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 196 transitions, 2300 flow [2024-06-28 01:44:47,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 196 transitions, 2267 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:47,802 INFO L231 Difference]: Finished difference. Result has 114 places, 144 transitions, 1638 flow [2024-06-28 01:44:47,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1638, PETRI_PLACES=114, PETRI_TRANSITIONS=144} [2024-06-28 01:44:47,802 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 74 predicate places. [2024-06-28 01:44:47,802 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 144 transitions, 1638 flow [2024-06-28 01:44:47,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:47,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:47,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:47,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:44:47,803 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:47,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:47,803 INFO L85 PathProgramCache]: Analyzing trace with hash -187097872, now seen corresponding path program 2 times [2024-06-28 01:44:47,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:47,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800952223] [2024-06-28 01:44:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:47,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:48,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:48,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800952223] [2024-06-28 01:44:48,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800952223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:48,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:48,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:48,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143407958] [2024-06-28 01:44:48,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:48,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:48,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:48,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:48,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:48,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:48,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 144 transitions, 1638 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-28 01:44:48,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:48,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:48,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:48,736 INFO L124 PetriNetUnfolderBase]: 1222/2315 cut-off events. [2024-06-28 01:44:48,736 INFO L125 PetriNetUnfolderBase]: For 15180/15180 co-relation queries the response was YES. [2024-06-28 01:44:48,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11375 conditions, 2315 events. 1222/2315 cut-off events. For 15180/15180 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15009 event pairs, 250 based on Foata normal form. 3/2231 useless extension candidates. Maximal degree in co-relation 11320. Up to 1322 conditions per place. [2024-06-28 01:44:48,751 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 131 selfloop transitions, 62 changer transitions 0/200 dead transitions. [2024-06-28 01:44:48,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 200 transitions, 2487 flow [2024-06-28 01:44:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 01:44:48,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-06-28 01:44:48,753 INFO L175 Difference]: Start difference. First operand has 114 places, 144 transitions, 1638 flow. Second operand 8 states and 154 transitions. [2024-06-28 01:44:48,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 200 transitions, 2487 flow [2024-06-28 01:44:48,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 200 transitions, 2349 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:48,777 INFO L231 Difference]: Finished difference. Result has 117 places, 159 transitions, 1910 flow [2024-06-28 01:44:48,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1910, PETRI_PLACES=117, PETRI_TRANSITIONS=159} [2024-06-28 01:44:48,778 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 77 predicate places. [2024-06-28 01:44:48,778 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 159 transitions, 1910 flow [2024-06-28 01:44:48,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-28 01:44:48,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:48,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:48,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:44:48,779 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:48,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:48,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2013725145, now seen corresponding path program 3 times [2024-06-28 01:44:48,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:48,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494047627] [2024-06-28 01:44:48,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:48,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:49,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:49,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494047627] [2024-06-28 01:44:49,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494047627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:49,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:49,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:49,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716112455] [2024-06-28 01:44:49,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:49,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:49,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:49,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:49,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:49,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 159 transitions, 1910 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-28 01:44:49,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:49,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:49,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:49,671 INFO L124 PetriNetUnfolderBase]: 1251/2218 cut-off events. [2024-06-28 01:44:49,671 INFO L125 PetriNetUnfolderBase]: For 15553/15553 co-relation queries the response was YES. [2024-06-28 01:44:49,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11908 conditions, 2218 events. 1251/2218 cut-off events. For 15553/15553 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 13546 event pairs, 195 based on Foata normal form. 1/2165 useless extension candidates. Maximal degree in co-relation 11850. Up to 1604 conditions per place. [2024-06-28 01:44:49,688 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 122 selfloop transitions, 63 changer transitions 0/192 dead transitions. [2024-06-28 01:44:49,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 192 transitions, 2488 flow [2024-06-28 01:44:49,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:49,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:49,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 01:44:49,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 01:44:49,691 INFO L175 Difference]: Start difference. First operand has 117 places, 159 transitions, 1910 flow. Second operand 7 states and 129 transitions. [2024-06-28 01:44:49,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 192 transitions, 2488 flow [2024-06-28 01:44:49,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 192 transitions, 2414 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:49,722 INFO L231 Difference]: Finished difference. Result has 120 places, 165 transitions, 2027 flow [2024-06-28 01:44:49,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2027, PETRI_PLACES=120, PETRI_TRANSITIONS=165} [2024-06-28 01:44:49,723 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 80 predicate places. [2024-06-28 01:44:49,723 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 165 transitions, 2027 flow [2024-06-28 01:44:49,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-28 01:44:49,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:49,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:49,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:44:49,724 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:49,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2013815355, now seen corresponding path program 4 times [2024-06-28 01:44:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:49,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858729129] [2024-06-28 01:44:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:49,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:50,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:50,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858729129] [2024-06-28 01:44:50,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858729129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:50,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:50,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:50,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480430630] [2024-06-28 01:44:50,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:50,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:50,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:50,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:50,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:50,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:50,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 165 transitions, 2027 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-28 01:44:50,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:50,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:50,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:50,669 INFO L124 PetriNetUnfolderBase]: 1252/2246 cut-off events. [2024-06-28 01:44:50,669 INFO L125 PetriNetUnfolderBase]: For 16702/16702 co-relation queries the response was YES. [2024-06-28 01:44:50,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11982 conditions, 2246 events. 1252/2246 cut-off events. For 16702/16702 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13830 event pairs, 200 based on Foata normal form. 1/2186 useless extension candidates. Maximal degree in co-relation 11923. Up to 1728 conditions per place. [2024-06-28 01:44:50,684 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 124 selfloop transitions, 62 changer transitions 0/193 dead transitions. [2024-06-28 01:44:50,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 193 transitions, 2559 flow [2024-06-28 01:44:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 01:44:50,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2024-06-28 01:44:50,685 INFO L175 Difference]: Start difference. First operand has 120 places, 165 transitions, 2027 flow. Second operand 7 states and 125 transitions. [2024-06-28 01:44:50,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 193 transitions, 2559 flow [2024-06-28 01:44:50,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 193 transitions, 2459 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:50,717 INFO L231 Difference]: Finished difference. Result has 124 places, 167 transitions, 2118 flow [2024-06-28 01:44:50,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2118, PETRI_PLACES=124, PETRI_TRANSITIONS=167} [2024-06-28 01:44:50,718 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 84 predicate places. [2024-06-28 01:44:50,718 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 167 transitions, 2118 flow [2024-06-28 01:44:50,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-28 01:44:50,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:50,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:50,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:44:50,719 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:50,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:50,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2017540160, now seen corresponding path program 3 times [2024-06-28 01:44:50,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:50,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206787213] [2024-06-28 01:44:50,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:50,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:51,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:51,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206787213] [2024-06-28 01:44:51,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206787213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:51,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:51,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:51,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419144833] [2024-06-28 01:44:51,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:51,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:51,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:51,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:51,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:51,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:51,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 167 transitions, 2118 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:51,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:51,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:51,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:51,765 INFO L124 PetriNetUnfolderBase]: 1327/2423 cut-off events. [2024-06-28 01:44:51,765 INFO L125 PetriNetUnfolderBase]: For 18910/18910 co-relation queries the response was YES. [2024-06-28 01:44:51,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12735 conditions, 2423 events. 1327/2423 cut-off events. For 18910/18910 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 15341 event pairs, 247 based on Foata normal form. 3/2351 useless extension candidates. Maximal degree in co-relation 12674. Up to 1229 conditions per place. [2024-06-28 01:44:51,781 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 131 selfloop transitions, 78 changer transitions 0/216 dead transitions. [2024-06-28 01:44:51,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 216 transitions, 2859 flow [2024-06-28 01:44:51,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:51,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 01:44:51,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:44:51,783 INFO L175 Difference]: Start difference. First operand has 124 places, 167 transitions, 2118 flow. Second operand 8 states and 150 transitions. [2024-06-28 01:44:51,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 216 transitions, 2859 flow [2024-06-28 01:44:51,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 216 transitions, 2763 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:51,822 INFO L231 Difference]: Finished difference. Result has 128 places, 174 transitions, 2260 flow [2024-06-28 01:44:51,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2260, PETRI_PLACES=128, PETRI_TRANSITIONS=174} [2024-06-28 01:44:51,822 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 88 predicate places. [2024-06-28 01:44:51,822 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 174 transitions, 2260 flow [2024-06-28 01:44:51,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:51,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:51,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:51,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:44:51,823 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:51,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:51,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2017534580, now seen corresponding path program 4 times [2024-06-28 01:44:51,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:51,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618082225] [2024-06-28 01:44:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:51,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:52,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:52,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618082225] [2024-06-28 01:44:52,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618082225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:52,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:52,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:52,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264707814] [2024-06-28 01:44:52,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:52,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:52,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:52,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:52,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:52,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 174 transitions, 2260 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-28 01:44:52,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:52,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:52,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:52,750 INFO L124 PetriNetUnfolderBase]: 1381/2555 cut-off events. [2024-06-28 01:44:52,750 INFO L125 PetriNetUnfolderBase]: For 22522/22522 co-relation queries the response was YES. [2024-06-28 01:44:52,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13601 conditions, 2555 events. 1381/2555 cut-off events. For 22522/22522 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 16701 event pairs, 431 based on Foata normal form. 3/2478 useless extension candidates. Maximal degree in co-relation 13539. Up to 1485 conditions per place. [2024-06-28 01:44:52,768 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 137 selfloop transitions, 74 changer transitions 0/218 dead transitions. [2024-06-28 01:44:52,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 218 transitions, 3003 flow [2024-06-28 01:44:52,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:44:52,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:44:52,769 INFO L175 Difference]: Start difference. First operand has 128 places, 174 transitions, 2260 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:44:52,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 218 transitions, 3003 flow [2024-06-28 01:44:52,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 218 transitions, 2871 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:52,811 INFO L231 Difference]: Finished difference. Result has 131 places, 181 transitions, 2415 flow [2024-06-28 01:44:52,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2135, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2415, PETRI_PLACES=131, PETRI_TRANSITIONS=181} [2024-06-28 01:44:52,811 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 91 predicate places. [2024-06-28 01:44:52,811 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 181 transitions, 2415 flow [2024-06-28 01:44:52,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-28 01:44:52,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:52,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:52,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:44:52,812 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:52,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:52,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1098588485, now seen corresponding path program 1 times [2024-06-28 01:44:52,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:52,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318789251] [2024-06-28 01:44:52,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:52,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:53,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:53,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318789251] [2024-06-28 01:44:53,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318789251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:53,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:53,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:53,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916017190] [2024-06-28 01:44:53,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:53,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:53,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:53,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:53,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:53,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:53,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 181 transitions, 2415 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:53,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:53,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:53,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:53,866 INFO L124 PetriNetUnfolderBase]: 1393/2581 cut-off events. [2024-06-28 01:44:53,867 INFO L125 PetriNetUnfolderBase]: For 23620/23620 co-relation queries the response was YES. [2024-06-28 01:44:53,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13889 conditions, 2581 events. 1393/2581 cut-off events. For 23620/23620 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 16894 event pairs, 526 based on Foata normal form. 2/2494 useless extension candidates. Maximal degree in co-relation 13826. Up to 2180 conditions per place. [2024-06-28 01:44:53,881 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 182 selfloop transitions, 17 changer transitions 0/206 dead transitions. [2024-06-28 01:44:53,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 206 transitions, 2937 flow [2024-06-28 01:44:53,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:53,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 01:44:53,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2024-06-28 01:44:53,882 INFO L175 Difference]: Start difference. First operand has 131 places, 181 transitions, 2415 flow. Second operand 8 states and 131 transitions. [2024-06-28 01:44:53,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 206 transitions, 2937 flow [2024-06-28 01:44:53,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 206 transitions, 2815 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:53,923 INFO L231 Difference]: Finished difference. Result has 135 places, 186 transitions, 2388 flow [2024-06-28 01:44:53,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2388, PETRI_PLACES=135, PETRI_TRANSITIONS=186} [2024-06-28 01:44:53,923 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 95 predicate places. [2024-06-28 01:44:53,924 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 186 transitions, 2388 flow [2024-06-28 01:44:53,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:53,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:53,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:53,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:44:53,924 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:53,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:53,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1097100504, now seen corresponding path program 5 times [2024-06-28 01:44:53,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:53,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792411228] [2024-06-28 01:44:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:53,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:54,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:54,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792411228] [2024-06-28 01:44:54,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792411228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:54,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:54,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:54,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994813251] [2024-06-28 01:44:54,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:54,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:54,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:54,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:54,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:54,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:54,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 186 transitions, 2388 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:54,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:54,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:54,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:55,029 INFO L124 PetriNetUnfolderBase]: 1468/2715 cut-off events. [2024-06-28 01:44:55,029 INFO L125 PetriNetUnfolderBase]: For 24344/24344 co-relation queries the response was YES. [2024-06-28 01:44:55,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14452 conditions, 2715 events. 1468/2715 cut-off events. For 24344/24344 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17949 event pairs, 540 based on Foata normal form. 3/2626 useless extension candidates. Maximal degree in co-relation 14387. Up to 2185 conditions per place. [2024-06-28 01:44:55,050 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 194 selfloop transitions, 23 changer transitions 0/224 dead transitions. [2024-06-28 01:44:55,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 224 transitions, 3050 flow [2024-06-28 01:44:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 01:44:55,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 01:44:55,051 INFO L175 Difference]: Start difference. First operand has 135 places, 186 transitions, 2388 flow. Second operand 8 states and 135 transitions. [2024-06-28 01:44:55,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 224 transitions, 3050 flow [2024-06-28 01:44:55,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 224 transitions, 2997 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:55,099 INFO L231 Difference]: Finished difference. Result has 138 places, 193 transitions, 2474 flow [2024-06-28 01:44:55,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2474, PETRI_PLACES=138, PETRI_TRANSITIONS=193} [2024-06-28 01:44:55,099 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 98 predicate places. [2024-06-28 01:44:55,099 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 193 transitions, 2474 flow [2024-06-28 01:44:55,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:55,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:55,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:55,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:44:55,100 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:55,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:55,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1333399942, now seen corresponding path program 6 times [2024-06-28 01:44:55,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:55,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459753086] [2024-06-28 01:44:55,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:55,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:55,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:55,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459753086] [2024-06-28 01:44:55,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459753086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:55,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:55,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:55,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289492229] [2024-06-28 01:44:55,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:55,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:55,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:55,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:55,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:55,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:55,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 193 transitions, 2474 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:55,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:55,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:55,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:56,235 INFO L124 PetriNetUnfolderBase]: 1462/2739 cut-off events. [2024-06-28 01:44:56,235 INFO L125 PetriNetUnfolderBase]: For 25067/25067 co-relation queries the response was YES. [2024-06-28 01:44:56,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14515 conditions, 2739 events. 1462/2739 cut-off events. For 25067/25067 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 18355 event pairs, 510 based on Foata normal form. 3/2643 useless extension candidates. Maximal degree in co-relation 14449. Up to 2110 conditions per place. [2024-06-28 01:44:56,253 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 195 selfloop transitions, 31 changer transitions 0/233 dead transitions. [2024-06-28 01:44:56,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 233 transitions, 3157 flow [2024-06-28 01:44:56,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:56,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 01:44:56,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:44:56,254 INFO L175 Difference]: Start difference. First operand has 138 places, 193 transitions, 2474 flow. Second operand 8 states and 140 transitions. [2024-06-28 01:44:56,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 233 transitions, 3157 flow [2024-06-28 01:44:56,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 233 transitions, 3108 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:56,300 INFO L231 Difference]: Finished difference. Result has 140 places, 193 transitions, 2498 flow [2024-06-28 01:44:56,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2498, PETRI_PLACES=140, PETRI_TRANSITIONS=193} [2024-06-28 01:44:56,301 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 100 predicate places. [2024-06-28 01:44:56,301 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 193 transitions, 2498 flow [2024-06-28 01:44:56,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:56,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:56,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:56,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:44:56,302 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:56,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:56,302 INFO L85 PathProgramCache]: Analyzing trace with hash -186184934, now seen corresponding path program 1 times [2024-06-28 01:44:56,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:56,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498291342] [2024-06-28 01:44:56,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:56,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:57,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:57,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498291342] [2024-06-28 01:44:57,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498291342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:57,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:57,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:57,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171358531] [2024-06-28 01:44:57,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:57,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:57,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:57,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:57,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:57,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 193 transitions, 2498 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:57,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:57,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:57,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:57,824 INFO L124 PetriNetUnfolderBase]: 1459/2702 cut-off events. [2024-06-28 01:44:57,825 INFO L125 PetriNetUnfolderBase]: For 25186/25186 co-relation queries the response was YES. [2024-06-28 01:44:57,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14534 conditions, 2702 events. 1459/2702 cut-off events. For 25186/25186 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17877 event pairs, 557 based on Foata normal form. 2/2609 useless extension candidates. Maximal degree in co-relation 14467. Up to 2256 conditions per place. [2024-06-28 01:44:57,841 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 195 selfloop transitions, 19 changer transitions 0/221 dead transitions. [2024-06-28 01:44:57,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 221 transitions, 3052 flow [2024-06-28 01:44:57,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:57,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 01:44:57,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-06-28 01:44:57,842 INFO L175 Difference]: Start difference. First operand has 140 places, 193 transitions, 2498 flow. Second operand 8 states and 134 transitions. [2024-06-28 01:44:57,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 221 transitions, 3052 flow [2024-06-28 01:44:57,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 221 transitions, 2927 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:57,889 INFO L231 Difference]: Finished difference. Result has 142 places, 195 transitions, 2439 flow [2024-06-28 01:44:57,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2373, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2439, PETRI_PLACES=142, PETRI_TRANSITIONS=195} [2024-06-28 01:44:57,890 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 102 predicate places. [2024-06-28 01:44:57,890 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 195 transitions, 2439 flow [2024-06-28 01:44:57,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:57,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:57,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:57,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:44:57,891 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:57,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:57,891 INFO L85 PathProgramCache]: Analyzing trace with hash -189041332, now seen corresponding path program 1 times [2024-06-28 01:44:57,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:57,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559635077] [2024-06-28 01:44:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:57,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:58,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:58,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559635077] [2024-06-28 01:44:58,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559635077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:58,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:58,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:58,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968156560] [2024-06-28 01:44:58,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:58,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:58,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:58,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:58,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:58,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:58,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 195 transitions, 2439 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:58,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:58,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:58,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:59,138 INFO L124 PetriNetUnfolderBase]: 1527/2895 cut-off events. [2024-06-28 01:44:59,138 INFO L125 PetriNetUnfolderBase]: For 24847/24847 co-relation queries the response was YES. [2024-06-28 01:44:59,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15032 conditions, 2895 events. 1527/2895 cut-off events. For 24847/24847 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 19780 event pairs, 327 based on Foata normal form. 2/2775 useless extension candidates. Maximal degree in co-relation 14963. Up to 2066 conditions per place. [2024-06-28 01:44:59,156 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 189 selfloop transitions, 43 changer transitions 0/239 dead transitions. [2024-06-28 01:44:59,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 239 transitions, 3223 flow [2024-06-28 01:44:59,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:59,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:59,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:44:59,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:44:59,157 INFO L175 Difference]: Start difference. First operand has 142 places, 195 transitions, 2439 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:44:59,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 239 transitions, 3223 flow [2024-06-28 01:44:59,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 239 transitions, 3173 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:59,209 INFO L231 Difference]: Finished difference. Result has 146 places, 199 transitions, 2516 flow [2024-06-28 01:44:59,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2516, PETRI_PLACES=146, PETRI_TRANSITIONS=199} [2024-06-28 01:44:59,209 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 106 predicate places. [2024-06-28 01:44:59,209 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 199 transitions, 2516 flow [2024-06-28 01:44:59,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:59,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:59,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:59,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:44:59,210 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:59,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash -506312568, now seen corresponding path program 1 times [2024-06-28 01:44:59,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:59,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488872622] [2024-06-28 01:44:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:59,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:59,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:59,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488872622] [2024-06-28 01:44:59,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488872622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:59,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:59,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:59,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955477895] [2024-06-28 01:44:59,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:59,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:59,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:59,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:59,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:59,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:44:59,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 199 transitions, 2516 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:59,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:59,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:44:59,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:00,562 INFO L124 PetriNetUnfolderBase]: 1599/2974 cut-off events. [2024-06-28 01:45:00,563 INFO L125 PetriNetUnfolderBase]: For 26961/26961 co-relation queries the response was YES. [2024-06-28 01:45:00,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15789 conditions, 2974 events. 1599/2974 cut-off events. For 26961/26961 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 20064 event pairs, 335 based on Foata normal form. 3/2879 useless extension candidates. Maximal degree in co-relation 15719. Up to 1496 conditions per place. [2024-06-28 01:45:00,582 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 168 selfloop transitions, 86 changer transitions 0/261 dead transitions. [2024-06-28 01:45:00,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 261 transitions, 3487 flow [2024-06-28 01:45:00,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:00,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 01:45:00,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202020202020202 [2024-06-28 01:45:00,583 INFO L175 Difference]: Start difference. First operand has 146 places, 199 transitions, 2516 flow. Second operand 11 states and 206 transitions. [2024-06-28 01:45:00,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 261 transitions, 3487 flow [2024-06-28 01:45:00,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 261 transitions, 3425 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:00,640 INFO L231 Difference]: Finished difference. Result has 153 places, 205 transitions, 2714 flow [2024-06-28 01:45:00,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2714, PETRI_PLACES=153, PETRI_TRANSITIONS=205} [2024-06-28 01:45:00,640 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 113 predicate places. [2024-06-28 01:45:00,641 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 205 transitions, 2714 flow [2024-06-28 01:45:00,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:00,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:00,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:00,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:45:00,641 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:00,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:00,642 INFO L85 PathProgramCache]: Analyzing trace with hash -506312692, now seen corresponding path program 2 times [2024-06-28 01:45:00,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:00,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120265979] [2024-06-28 01:45:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:00,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:01,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:01,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120265979] [2024-06-28 01:45:01,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120265979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:01,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:01,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:01,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145321123] [2024-06-28 01:45:01,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:01,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:01,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:01,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:01,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:01,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:01,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 205 transitions, 2714 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:01,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:01,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:01,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:01,890 INFO L124 PetriNetUnfolderBase]: 1606/3021 cut-off events. [2024-06-28 01:45:01,890 INFO L125 PetriNetUnfolderBase]: For 30382/30382 co-relation queries the response was YES. [2024-06-28 01:45:01,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16775 conditions, 3021 events. 1606/3021 cut-off events. For 30382/30382 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 20759 event pairs, 343 based on Foata normal form. 2/2899 useless extension candidates. Maximal degree in co-relation 16702. Up to 2273 conditions per place. [2024-06-28 01:45:01,910 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 192 selfloop transitions, 49 changer transitions 0/248 dead transitions. [2024-06-28 01:45:01,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 248 transitions, 3471 flow [2024-06-28 01:45:01,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:01,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 01:45:01,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-28 01:45:01,912 INFO L175 Difference]: Start difference. First operand has 153 places, 205 transitions, 2714 flow. Second operand 10 states and 176 transitions. [2024-06-28 01:45:01,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 248 transitions, 3471 flow [2024-06-28 01:45:01,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 248 transitions, 3351 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:01,982 INFO L231 Difference]: Finished difference. Result has 156 places, 206 transitions, 2706 flow [2024-06-28 01:45:01,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2706, PETRI_PLACES=156, PETRI_TRANSITIONS=206} [2024-06-28 01:45:01,982 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 116 predicate places. [2024-06-28 01:45:01,983 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 206 transitions, 2706 flow [2024-06-28 01:45:01,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:01,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:01,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:01,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:45:01,983 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:01,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash 267068334, now seen corresponding path program 3 times [2024-06-28 01:45:01,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:01,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990737998] [2024-06-28 01:45:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:01,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:02,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:02,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990737998] [2024-06-28 01:45:02,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990737998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:02,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:02,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:45:02,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579910129] [2024-06-28 01:45:02,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:02,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:45:02,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:02,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:45:02,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:45:02,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:02,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 206 transitions, 2706 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:02,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:02,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:02,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:03,006 INFO L124 PetriNetUnfolderBase]: 1709/3137 cut-off events. [2024-06-28 01:45:03,006 INFO L125 PetriNetUnfolderBase]: For 31427/31427 co-relation queries the response was YES. [2024-06-28 01:45:03,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17532 conditions, 3137 events. 1709/3137 cut-off events. For 31427/31427 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 21339 event pairs, 265 based on Foata normal form. 2/3047 useless extension candidates. Maximal degree in co-relation 17457. Up to 1989 conditions per place. [2024-06-28 01:45:03,025 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 177 selfloop transitions, 64 changer transitions 0/248 dead transitions. [2024-06-28 01:45:03,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 248 transitions, 3459 flow [2024-06-28 01:45:03,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:03,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:45:03,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:45:03,027 INFO L175 Difference]: Start difference. First operand has 156 places, 206 transitions, 2706 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:45:03,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 248 transitions, 3459 flow [2024-06-28 01:45:03,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 248 transitions, 3359 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:03,097 INFO L231 Difference]: Finished difference. Result has 158 places, 216 transitions, 2849 flow [2024-06-28 01:45:03,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2609, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2849, PETRI_PLACES=158, PETRI_TRANSITIONS=216} [2024-06-28 01:45:03,098 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 118 predicate places. [2024-06-28 01:45:03,098 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 216 transitions, 2849 flow [2024-06-28 01:45:03,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:03,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:03,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:03,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:45:03,099 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:03,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:03,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1396077016, now seen corresponding path program 4 times [2024-06-28 01:45:03,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:03,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017779855] [2024-06-28 01:45:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:03,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:03,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:03,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017779855] [2024-06-28 01:45:03,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017779855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:03,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:03,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:45:03,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897087388] [2024-06-28 01:45:03,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:03,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:45:03,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:03,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:45:03,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:45:03,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:03,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 216 transitions, 2849 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:03,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:03,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:03,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:04,113 INFO L124 PetriNetUnfolderBase]: 1811/3359 cut-off events. [2024-06-28 01:45:04,113 INFO L125 PetriNetUnfolderBase]: For 34819/34819 co-relation queries the response was YES. [2024-06-28 01:45:04,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18944 conditions, 3359 events. 1811/3359 cut-off events. For 34819/34819 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 23476 event pairs, 340 based on Foata normal form. 2/3261 useless extension candidates. Maximal degree in co-relation 18866. Up to 2213 conditions per place. [2024-06-28 01:45:04,138 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 180 selfloop transitions, 69 changer transitions 0/256 dead transitions. [2024-06-28 01:45:04,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 256 transitions, 3651 flow [2024-06-28 01:45:04,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 01:45:04,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 01:45:04,139 INFO L175 Difference]: Start difference. First operand has 158 places, 216 transitions, 2849 flow. Second operand 8 states and 148 transitions. [2024-06-28 01:45:04,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 256 transitions, 3651 flow [2024-06-28 01:45:04,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 256 transitions, 3500 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:04,225 INFO L231 Difference]: Finished difference. Result has 162 places, 224 transitions, 2976 flow [2024-06-28 01:45:04,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2730, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2976, PETRI_PLACES=162, PETRI_TRANSITIONS=224} [2024-06-28 01:45:04,225 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 122 predicate places. [2024-06-28 01:45:04,225 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 224 transitions, 2976 flow [2024-06-28 01:45:04,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:04,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:04,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:04,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:45:04,226 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:04,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:04,226 INFO L85 PathProgramCache]: Analyzing trace with hash 368788802, now seen corresponding path program 2 times [2024-06-28 01:45:04,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:04,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521452292] [2024-06-28 01:45:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:04,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:04,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:04,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521452292] [2024-06-28 01:45:04,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521452292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:04,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:04,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:45:04,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053075053] [2024-06-28 01:45:04,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:04,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:45:04,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:04,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:45:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:45:04,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:04,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 224 transitions, 2976 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:04,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:04,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:04,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:05,341 INFO L124 PetriNetUnfolderBase]: 1829/3415 cut-off events. [2024-06-28 01:45:05,341 INFO L125 PetriNetUnfolderBase]: For 35345/35345 co-relation queries the response was YES. [2024-06-28 01:45:05,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19263 conditions, 3415 events. 1829/3415 cut-off events. For 35345/35345 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 24050 event pairs, 294 based on Foata normal form. 1/3317 useless extension candidates. Maximal degree in co-relation 19184. Up to 2145 conditions per place. [2024-06-28 01:45:05,367 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 229 selfloop transitions, 56 changer transitions 0/292 dead transitions. [2024-06-28 01:45:05,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 292 transitions, 4229 flow [2024-06-28 01:45:05,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:05,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:05,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 01:45:05,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-06-28 01:45:05,368 INFO L175 Difference]: Start difference. First operand has 162 places, 224 transitions, 2976 flow. Second operand 8 states and 154 transitions. [2024-06-28 01:45:05,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 292 transitions, 4229 flow [2024-06-28 01:45:05,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 292 transitions, 4153 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:05,454 INFO L231 Difference]: Finished difference. Result has 167 places, 235 transitions, 3202 flow [2024-06-28 01:45:05,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2904, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3202, PETRI_PLACES=167, PETRI_TRANSITIONS=235} [2024-06-28 01:45:05,454 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 127 predicate places. [2024-06-28 01:45:05,454 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 235 transitions, 3202 flow [2024-06-28 01:45:05,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:05,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:05,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:05,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:45:05,455 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:05,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:05,455 INFO L85 PathProgramCache]: Analyzing trace with hash 368356228, now seen corresponding path program 5 times [2024-06-28 01:45:05,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:05,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738308921] [2024-06-28 01:45:05,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:05,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:05,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:05,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738308921] [2024-06-28 01:45:05,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738308921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:05,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:05,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:45:05,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885431632] [2024-06-28 01:45:05,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:05,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:45:05,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:05,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:45:05,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:45:05,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:05,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 235 transitions, 3202 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:05,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:05,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:05,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:06,626 INFO L124 PetriNetUnfolderBase]: 1836/3451 cut-off events. [2024-06-28 01:45:06,626 INFO L125 PetriNetUnfolderBase]: For 36144/36144 co-relation queries the response was YES. [2024-06-28 01:45:06,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20151 conditions, 3451 events. 1836/3451 cut-off events. For 36144/36144 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 24373 event pairs, 344 based on Foata normal form. 2/3348 useless extension candidates. Maximal degree in co-relation 20069. Up to 2509 conditions per place. [2024-06-28 01:45:06,655 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 193 selfloop transitions, 65 changer transitions 0/265 dead transitions. [2024-06-28 01:45:06,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 265 transitions, 3879 flow [2024-06-28 01:45:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 01:45:06,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 01:45:06,661 INFO L175 Difference]: Start difference. First operand has 167 places, 235 transitions, 3202 flow. Second operand 8 states and 147 transitions. [2024-06-28 01:45:06,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 265 transitions, 3879 flow [2024-06-28 01:45:06,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 265 transitions, 3817 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:06,783 INFO L231 Difference]: Finished difference. Result has 171 places, 236 transitions, 3298 flow [2024-06-28 01:45:06,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3146, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3298, PETRI_PLACES=171, PETRI_TRANSITIONS=236} [2024-06-28 01:45:06,784 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 131 predicate places. [2024-06-28 01:45:06,784 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 236 transitions, 3298 flow [2024-06-28 01:45:06,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:06,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:06,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:06,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:45:06,785 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:06,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:06,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1505070514, now seen corresponding path program 3 times [2024-06-28 01:45:06,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:06,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397092737] [2024-06-28 01:45:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:06,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:07,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:07,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397092737] [2024-06-28 01:45:07,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397092737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:07,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:07,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:07,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233085474] [2024-06-28 01:45:07,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:07,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:07,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:07,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:07,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 236 transitions, 3298 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:07,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:07,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:07,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:08,323 INFO L124 PetriNetUnfolderBase]: 1909/3671 cut-off events. [2024-06-28 01:45:08,323 INFO L125 PetriNetUnfolderBase]: For 38379/38379 co-relation queries the response was YES. [2024-06-28 01:45:08,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21165 conditions, 3671 events. 1909/3671 cut-off events. For 38379/38379 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 26874 event pairs, 408 based on Foata normal form. 3/3537 useless extension candidates. Maximal degree in co-relation 21082. Up to 2185 conditions per place. [2024-06-28 01:45:08,350 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 206 selfloop transitions, 89 changer transitions 0/302 dead transitions. [2024-06-28 01:45:08,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 302 transitions, 4489 flow [2024-06-28 01:45:08,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:08,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 01:45:08,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361111111111111 [2024-06-28 01:45:08,352 INFO L175 Difference]: Start difference. First operand has 171 places, 236 transitions, 3298 flow. Second operand 10 states and 193 transitions. [2024-06-28 01:45:08,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 302 transitions, 4489 flow [2024-06-28 01:45:08,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 302 transitions, 4356 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:08,464 INFO L231 Difference]: Finished difference. Result has 176 places, 247 transitions, 3530 flow [2024-06-28 01:45:08,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3530, PETRI_PLACES=176, PETRI_TRANSITIONS=247} [2024-06-28 01:45:08,464 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 136 predicate places. [2024-06-28 01:45:08,464 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 247 transitions, 3530 flow [2024-06-28 01:45:08,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:08,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:08,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:08,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:45:08,465 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:08,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:08,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1513830184, now seen corresponding path program 4 times [2024-06-28 01:45:08,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:08,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190773450] [2024-06-28 01:45:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:08,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:09,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:09,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190773450] [2024-06-28 01:45:09,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190773450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:09,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:09,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:09,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224088192] [2024-06-28 01:45:09,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:09,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:09,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:09,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:09,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:09,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:09,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 247 transitions, 3530 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:09,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:09,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:09,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:10,085 INFO L124 PetriNetUnfolderBase]: 1924/3715 cut-off events. [2024-06-28 01:45:10,085 INFO L125 PetriNetUnfolderBase]: For 39626/39626 co-relation queries the response was YES. [2024-06-28 01:45:10,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21707 conditions, 3715 events. 1924/3715 cut-off events. For 39626/39626 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 27244 event pairs, 441 based on Foata normal form. 3/3574 useless extension candidates. Maximal degree in co-relation 21622. Up to 2338 conditions per place. [2024-06-28 01:45:10,114 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 215 selfloop transitions, 79 changer transitions 0/301 dead transitions. [2024-06-28 01:45:10,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 301 transitions, 4538 flow [2024-06-28 01:45:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:10,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:45:10,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-28 01:45:10,115 INFO L175 Difference]: Start difference. First operand has 176 places, 247 transitions, 3530 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:45:10,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 301 transitions, 4538 flow [2024-06-28 01:45:10,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 301 transitions, 4434 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:10,233 INFO L231 Difference]: Finished difference. Result has 181 places, 251 transitions, 3660 flow [2024-06-28 01:45:10,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3434, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3660, PETRI_PLACES=181, PETRI_TRANSITIONS=251} [2024-06-28 01:45:10,233 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 141 predicate places. [2024-06-28 01:45:10,233 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 251 transitions, 3660 flow [2024-06-28 01:45:10,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:10,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:10,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:10,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:45:10,234 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:10,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:10,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1999089492, now seen corresponding path program 6 times [2024-06-28 01:45:10,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:10,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302706411] [2024-06-28 01:45:10,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:10,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:10,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:10,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302706411] [2024-06-28 01:45:10,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302706411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:10,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:10,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:10,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175025653] [2024-06-28 01:45:10,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:10,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:10,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:10,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:10,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:10,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:10,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 251 transitions, 3660 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:10,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:10,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:10,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:11,454 INFO L124 PetriNetUnfolderBase]: 1974/3819 cut-off events. [2024-06-28 01:45:11,454 INFO L125 PetriNetUnfolderBase]: For 41656/41656 co-relation queries the response was YES. [2024-06-28 01:45:11,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22615 conditions, 3819 events. 1974/3819 cut-off events. For 41656/41656 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 28226 event pairs, 338 based on Foata normal form. 2/3670 useless extension candidates. Maximal degree in co-relation 22528. Up to 2289 conditions per place. [2024-06-28 01:45:11,478 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 204 selfloop transitions, 85 changer transitions 0/296 dead transitions. [2024-06-28 01:45:11,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 296 transitions, 4610 flow [2024-06-28 01:45:11,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:11,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 01:45:11,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:45:11,479 INFO L175 Difference]: Start difference. First operand has 181 places, 251 transitions, 3660 flow. Second operand 8 states and 145 transitions. [2024-06-28 01:45:11,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 296 transitions, 4610 flow [2024-06-28 01:45:11,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 296 transitions, 4450 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:11,595 INFO L231 Difference]: Finished difference. Result has 183 places, 262 transitions, 3901 flow [2024-06-28 01:45:11,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3901, PETRI_PLACES=183, PETRI_TRANSITIONS=262} [2024-06-28 01:45:11,595 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 143 predicate places. [2024-06-28 01:45:11,595 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 262 transitions, 3901 flow [2024-06-28 01:45:11,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:11,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:11,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:11,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:45:11,596 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:11,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:11,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1999029042, now seen corresponding path program 7 times [2024-06-28 01:45:11,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:11,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460389214] [2024-06-28 01:45:11,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:11,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:12,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:12,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460389214] [2024-06-28 01:45:12,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460389214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:12,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:12,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:12,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205627041] [2024-06-28 01:45:12,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:12,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:12,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:12,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:12,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:12,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:12,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 262 transitions, 3901 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:12,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:12,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:12,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:12,915 INFO L124 PetriNetUnfolderBase]: 1971/3909 cut-off events. [2024-06-28 01:45:12,915 INFO L125 PetriNetUnfolderBase]: For 42454/42454 co-relation queries the response was YES. [2024-06-28 01:45:12,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23132 conditions, 3909 events. 1971/3909 cut-off events. For 42454/42454 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 29592 event pairs, 465 based on Foata normal form. 2/3736 useless extension candidates. Maximal degree in co-relation 23042. Up to 2679 conditions per place. [2024-06-28 01:45:12,947 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 213 selfloop transitions, 81 changer transitions 0/301 dead transitions. [2024-06-28 01:45:12,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 301 transitions, 4729 flow [2024-06-28 01:45:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:45:12,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-28 01:45:12,948 INFO L175 Difference]: Start difference. First operand has 183 places, 262 transitions, 3901 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:45:12,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 301 transitions, 4729 flow [2024-06-28 01:45:13,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 301 transitions, 4668 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:13,103 INFO L231 Difference]: Finished difference. Result has 189 places, 263 transitions, 4052 flow [2024-06-28 01:45:13,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3840, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4052, PETRI_PLACES=189, PETRI_TRANSITIONS=263} [2024-06-28 01:45:13,104 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 149 predicate places. [2024-06-28 01:45:13,104 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 263 transitions, 4052 flow [2024-06-28 01:45:13,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:13,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:13,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:13,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:45:13,104 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:13,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1999028918, now seen corresponding path program 5 times [2024-06-28 01:45:13,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:13,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558735861] [2024-06-28 01:45:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:13,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:13,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:13,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558735861] [2024-06-28 01:45:13,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558735861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:13,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:13,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:13,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028047121] [2024-06-28 01:45:13,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:13,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:13,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:13,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:13,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:13,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:13,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 263 transitions, 4052 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:13,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:13,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:13,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:14,640 INFO L124 PetriNetUnfolderBase]: 2061/3937 cut-off events. [2024-06-28 01:45:14,640 INFO L125 PetriNetUnfolderBase]: For 45481/45481 co-relation queries the response was YES. [2024-06-28 01:45:14,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24408 conditions, 3937 events. 2061/3937 cut-off events. For 45481/45481 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 28964 event pairs, 426 based on Foata normal form. 3/3798 useless extension candidates. Maximal degree in co-relation 24316. Up to 1682 conditions per place. [2024-06-28 01:45:14,671 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 172 selfloop transitions, 154 changer transitions 0/333 dead transitions. [2024-06-28 01:45:14,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 333 transitions, 5300 flow [2024-06-28 01:45:14,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:14,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 01:45:14,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 01:45:14,672 INFO L175 Difference]: Start difference. First operand has 189 places, 263 transitions, 4052 flow. Second operand 10 states and 189 transitions. [2024-06-28 01:45:14,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 333 transitions, 5300 flow [2024-06-28 01:45:14,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 333 transitions, 5146 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:14,803 INFO L231 Difference]: Finished difference. Result has 194 places, 279 transitions, 4493 flow [2024-06-28 01:45:14,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3902, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4493, PETRI_PLACES=194, PETRI_TRANSITIONS=279} [2024-06-28 01:45:14,804 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 154 predicate places. [2024-06-28 01:45:14,804 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 279 transitions, 4493 flow [2024-06-28 01:45:14,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:14,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:14,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:14,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:45:14,805 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:14,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:14,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1880941238, now seen corresponding path program 6 times [2024-06-28 01:45:14,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:14,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769857439] [2024-06-28 01:45:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:14,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:15,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:15,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769857439] [2024-06-28 01:45:15,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769857439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:15,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:15,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:15,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421629415] [2024-06-28 01:45:15,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:15,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:15,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:15,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:15,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:15,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:15,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 279 transitions, 4493 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:15,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:15,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:15,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:16,156 INFO L124 PetriNetUnfolderBase]: 2106/3907 cut-off events. [2024-06-28 01:45:16,156 INFO L125 PetriNetUnfolderBase]: For 46946/46946 co-relation queries the response was YES. [2024-06-28 01:45:16,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26046 conditions, 3907 events. 2106/3907 cut-off events. For 46946/46946 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 27796 event pairs, 360 based on Foata normal form. 1/3798 useless extension candidates. Maximal degree in co-relation 25952. Up to 2692 conditions per place. [2024-06-28 01:45:16,184 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 233 selfloop transitions, 124 changer transitions 0/364 dead transitions. [2024-06-28 01:45:16,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 364 transitions, 6184 flow [2024-06-28 01:45:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 01:45:16,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 01:45:16,185 INFO L175 Difference]: Start difference. First operand has 194 places, 279 transitions, 4493 flow. Second operand 8 states and 153 transitions. [2024-06-28 01:45:16,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 364 transitions, 6184 flow [2024-06-28 01:45:16,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 364 transitions, 5991 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:16,343 INFO L231 Difference]: Finished difference. Result has 199 places, 323 transitions, 5374 flow [2024-06-28 01:45:16,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4327, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5374, PETRI_PLACES=199, PETRI_TRANSITIONS=323} [2024-06-28 01:45:16,344 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 159 predicate places. [2024-06-28 01:45:16,344 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 323 transitions, 5374 flow [2024-06-28 01:45:16,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:16,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:16,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:16,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:45:16,344 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:16,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:16,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1880936588, now seen corresponding path program 7 times [2024-06-28 01:45:16,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:16,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282976892] [2024-06-28 01:45:16,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:16,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:16,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:16,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282976892] [2024-06-28 01:45:16,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282976892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:16,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:16,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:16,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878156655] [2024-06-28 01:45:16,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:16,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:16,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:16,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:16,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:16,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:16,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 323 transitions, 5374 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:16,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:16,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:16,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:17,733 INFO L124 PetriNetUnfolderBase]: 2144/4177 cut-off events. [2024-06-28 01:45:17,733 INFO L125 PetriNetUnfolderBase]: For 53132/53132 co-relation queries the response was YES. [2024-06-28 01:45:17,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27893 conditions, 4177 events. 2144/4177 cut-off events. For 53132/53132 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 31594 event pairs, 727 based on Foata normal form. 1/4017 useless extension candidates. Maximal degree in co-relation 27795. Up to 3074 conditions per place. [2024-06-28 01:45:17,768 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 271 selfloop transitions, 92 changer transitions 0/370 dead transitions. [2024-06-28 01:45:17,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 370 transitions, 6559 flow [2024-06-28 01:45:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:45:17,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:45:17,769 INFO L175 Difference]: Start difference. First operand has 199 places, 323 transitions, 5374 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:45:17,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 370 transitions, 6559 flow [2024-06-28 01:45:17,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 370 transitions, 6469 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-28 01:45:17,958 INFO L231 Difference]: Finished difference. Result has 207 places, 339 transitions, 5812 flow [2024-06-28 01:45:17,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5306, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5812, PETRI_PLACES=207, PETRI_TRANSITIONS=339} [2024-06-28 01:45:17,958 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 167 predicate places. [2024-06-28 01:45:17,958 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 339 transitions, 5812 flow [2024-06-28 01:45:17,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:17,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:17,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:17,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:45:17,959 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:17,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:17,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1779913020, now seen corresponding path program 8 times [2024-06-28 01:45:17,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:17,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424891982] [2024-06-28 01:45:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:17,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:18,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:18,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424891982] [2024-06-28 01:45:18,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424891982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:18,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:18,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:18,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51995193] [2024-06-28 01:45:18,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:18,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:18,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:18,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:18,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:18,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:18,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 339 transitions, 5812 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:18,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:18,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:18,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:19,491 INFO L124 PetriNetUnfolderBase]: 2226/4262 cut-off events. [2024-06-28 01:45:19,491 INFO L125 PetriNetUnfolderBase]: For 55591/55591 co-relation queries the response was YES. [2024-06-28 01:45:19,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29172 conditions, 4262 events. 2226/4262 cut-off events. For 55591/55591 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 31807 event pairs, 451 based on Foata normal form. 3/4106 useless extension candidates. Maximal degree in co-relation 29071. Up to 2466 conditions per place. [2024-06-28 01:45:19,534 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 268 selfloop transitions, 131 changer transitions 0/406 dead transitions. [2024-06-28 01:45:19,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 406 transitions, 7275 flow [2024-06-28 01:45:19,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:19,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:45:19,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-06-28 01:45:19,535 INFO L175 Difference]: Start difference. First operand has 207 places, 339 transitions, 5812 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:45:19,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 406 transitions, 7275 flow [2024-06-28 01:45:19,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 406 transitions, 7246 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 01:45:19,766 INFO L231 Difference]: Finished difference. Result has 214 places, 353 transitions, 6344 flow [2024-06-28 01:45:19,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5783, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6344, PETRI_PLACES=214, PETRI_TRANSITIONS=353} [2024-06-28 01:45:19,767 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 174 predicate places. [2024-06-28 01:45:19,767 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 353 transitions, 6344 flow [2024-06-28 01:45:19,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:19,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:19,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:19,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:45:19,767 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:19,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:19,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1755869172, now seen corresponding path program 9 times [2024-06-28 01:45:19,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:19,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404047951] [2024-06-28 01:45:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:20,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:20,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404047951] [2024-06-28 01:45:20,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404047951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:20,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:20,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:20,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181270231] [2024-06-28 01:45:20,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:20,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:20,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:20,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:20,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:20,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:20,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 353 transitions, 6344 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:20,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:20,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:20,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:21,410 INFO L124 PetriNetUnfolderBase]: 2308/4415 cut-off events. [2024-06-28 01:45:21,411 INFO L125 PetriNetUnfolderBase]: For 65151/65151 co-relation queries the response was YES. [2024-06-28 01:45:21,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31220 conditions, 4415 events. 2308/4415 cut-off events. For 65151/65151 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 33356 event pairs, 827 based on Foata normal form. 3/4262 useless extension candidates. Maximal degree in co-relation 31117. Up to 3415 conditions per place. [2024-06-28 01:45:21,445 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 358 selfloop transitions, 52 changer transitions 0/417 dead transitions. [2024-06-28 01:45:21,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 417 transitions, 7846 flow [2024-06-28 01:45:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:45:21,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-28 01:45:21,446 INFO L175 Difference]: Start difference. First operand has 214 places, 353 transitions, 6344 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:45:21,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 417 transitions, 7846 flow [2024-06-28 01:45:21,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 417 transitions, 7549 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:21,670 INFO L231 Difference]: Finished difference. Result has 216 places, 367 transitions, 6470 flow [2024-06-28 01:45:21,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6055, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6470, PETRI_PLACES=216, PETRI_TRANSITIONS=367} [2024-06-28 01:45:21,670 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 176 predicate places. [2024-06-28 01:45:21,670 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 367 transitions, 6470 flow [2024-06-28 01:45:21,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:21,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:21,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:21,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:45:21,670 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:21,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:21,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1608017776, now seen corresponding path program 10 times [2024-06-28 01:45:21,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:21,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123374357] [2024-06-28 01:45:21,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:21,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:22,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:22,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123374357] [2024-06-28 01:45:22,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123374357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:22,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:22,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:22,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553897536] [2024-06-28 01:45:22,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:22,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:22,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:22,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:22,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:22,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:22,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 367 transitions, 6470 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:22,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:22,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:22,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:23,146 INFO L124 PetriNetUnfolderBase]: 2315/4389 cut-off events. [2024-06-28 01:45:23,146 INFO L125 PetriNetUnfolderBase]: For 59198/59198 co-relation queries the response was YES. [2024-06-28 01:45:23,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30787 conditions, 4389 events. 2315/4389 cut-off events. For 59198/59198 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 32886 event pairs, 884 based on Foata normal form. 1/4243 useless extension candidates. Maximal degree in co-relation 30683. Up to 3644 conditions per place. [2024-06-28 01:45:23,186 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 362 selfloop transitions, 39 changer transitions 0/408 dead transitions. [2024-06-28 01:45:23,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 408 transitions, 7597 flow [2024-06-28 01:45:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:23,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:23,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:45:23,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 01:45:23,187 INFO L175 Difference]: Start difference. First operand has 216 places, 367 transitions, 6470 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:45:23,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 408 transitions, 7597 flow [2024-06-28 01:45:23,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 408 transitions, 7426 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:23,471 INFO L231 Difference]: Finished difference. Result has 220 places, 377 transitions, 6588 flow [2024-06-28 01:45:23,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6303, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6588, PETRI_PLACES=220, PETRI_TRANSITIONS=377} [2024-06-28 01:45:23,471 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 180 predicate places. [2024-06-28 01:45:23,472 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 377 transitions, 6588 flow [2024-06-28 01:45:23,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:23,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:23,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:23,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:45:23,472 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:23,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:23,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1476776380, now seen corresponding path program 1 times [2024-06-28 01:45:23,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:23,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621675378] [2024-06-28 01:45:23,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:23,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:24,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:24,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621675378] [2024-06-28 01:45:24,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621675378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:24,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:24,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:24,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658329700] [2024-06-28 01:45:24,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:24,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:24,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:24,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:24,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:24,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:24,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 377 transitions, 6588 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:24,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:24,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:24,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:25,202 INFO L124 PetriNetUnfolderBase]: 2316/4376 cut-off events. [2024-06-28 01:45:25,203 INFO L125 PetriNetUnfolderBase]: For 58677/58677 co-relation queries the response was YES. [2024-06-28 01:45:25,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30629 conditions, 4376 events. 2316/4376 cut-off events. For 58677/58677 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 32677 event pairs, 918 based on Foata normal form. 1/4234 useless extension candidates. Maximal degree in co-relation 30522. Up to 3683 conditions per place. [2024-06-28 01:45:25,243 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 374 selfloop transitions, 21 changer transitions 0/402 dead transitions. [2024-06-28 01:45:25,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 402 transitions, 7530 flow [2024-06-28 01:45:25,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:25,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 01:45:25,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:45:25,248 INFO L175 Difference]: Start difference. First operand has 220 places, 377 transitions, 6588 flow. Second operand 8 states and 132 transitions. [2024-06-28 01:45:25,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 402 transitions, 7530 flow [2024-06-28 01:45:25,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 402 transitions, 7408 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:25,511 INFO L231 Difference]: Finished difference. Result has 224 places, 382 transitions, 6588 flow [2024-06-28 01:45:25,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6466, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6588, PETRI_PLACES=224, PETRI_TRANSITIONS=382} [2024-06-28 01:45:25,512 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 184 predicate places. [2024-06-28 01:45:25,512 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 382 transitions, 6588 flow [2024-06-28 01:45:25,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:25,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:25,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:25,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:45:25,513 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:25,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:25,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1477102128, now seen corresponding path program 1 times [2024-06-28 01:45:25,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:25,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855083308] [2024-06-28 01:45:25,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:25,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:26,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:26,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855083308] [2024-06-28 01:45:26,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855083308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:26,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:26,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:26,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521074082] [2024-06-28 01:45:26,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:26,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:26,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:26,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:26,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:26,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:26,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 382 transitions, 6588 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:26,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:26,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:26,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:27,132 INFO L124 PetriNetUnfolderBase]: 2318/4372 cut-off events. [2024-06-28 01:45:27,132 INFO L125 PetriNetUnfolderBase]: For 59820/59820 co-relation queries the response was YES. [2024-06-28 01:45:27,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30752 conditions, 4372 events. 2318/4372 cut-off events. For 59820/59820 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 32615 event pairs, 920 based on Foata normal form. 2/4233 useless extension candidates. Maximal degree in co-relation 30643. Up to 3653 conditions per place. [2024-06-28 01:45:27,177 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 379 selfloop transitions, 24 changer transitions 0/410 dead transitions. [2024-06-28 01:45:27,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 410 transitions, 7550 flow [2024-06-28 01:45:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:45:27,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 01:45:27,179 INFO L175 Difference]: Start difference. First operand has 224 places, 382 transitions, 6588 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:45:27,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 410 transitions, 7550 flow [2024-06-28 01:45:27,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 410 transitions, 7492 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:27,446 INFO L231 Difference]: Finished difference. Result has 229 places, 384 transitions, 6610 flow [2024-06-28 01:45:27,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6530, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6610, PETRI_PLACES=229, PETRI_TRANSITIONS=384} [2024-06-28 01:45:27,447 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 189 predicate places. [2024-06-28 01:45:27,447 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 384 transitions, 6610 flow [2024-06-28 01:45:27,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:27,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:27,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:27,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:45:27,447 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:27,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:27,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1900519642, now seen corresponding path program 1 times [2024-06-28 01:45:27,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:27,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549147671] [2024-06-28 01:45:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:27,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:27,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:27,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549147671] [2024-06-28 01:45:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549147671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:27,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:45:27,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372910880] [2024-06-28 01:45:27,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:27,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:45:27,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:27,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:45:27,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:45:27,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-06-28 01:45:27,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 384 transitions, 6610 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:27,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:27,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-06-28 01:45:27,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:27,920 INFO L124 PetriNetUnfolderBase]: 1032/2214 cut-off events. [2024-06-28 01:45:27,921 INFO L125 PetriNetUnfolderBase]: For 28683/28780 co-relation queries the response was YES. [2024-06-28 01:45:27,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14505 conditions, 2214 events. 1032/2214 cut-off events. For 28683/28780 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 15905 event pairs, 246 based on Foata normal form. 203/2210 useless extension candidates. Maximal degree in co-relation 14396. Up to 715 conditions per place. [2024-06-28 01:45:27,939 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 129 selfloop transitions, 98 changer transitions 0/334 dead transitions. [2024-06-28 01:45:27,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 334 transitions, 6174 flow [2024-06-28 01:45:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:45:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:45:27,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-06-28 01:45:27,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-28 01:45:27,940 INFO L175 Difference]: Start difference. First operand has 229 places, 384 transitions, 6610 flow. Second operand 4 states and 99 transitions. [2024-06-28 01:45:27,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 334 transitions, 6174 flow [2024-06-28 01:45:28,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 334 transitions, 5353 flow, removed 54 selfloop flow, removed 36 redundant places. [2024-06-28 01:45:28,068 INFO L231 Difference]: Finished difference. Result has 198 places, 322 transitions, 5227 flow [2024-06-28 01:45:28,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4801, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5227, PETRI_PLACES=198, PETRI_TRANSITIONS=322} [2024-06-28 01:45:28,068 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 158 predicate places. [2024-06-28 01:45:28,068 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 322 transitions, 5227 flow [2024-06-28 01:45:28,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:28,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:28,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:28,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:45:28,069 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:28,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:28,069 INFO L85 PathProgramCache]: Analyzing trace with hash -2133928773, now seen corresponding path program 1 times [2024-06-28 01:45:28,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:28,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177771243] [2024-06-28 01:45:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:28,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:28,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:28,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177771243] [2024-06-28 01:45:28,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177771243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:28,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:28,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:28,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997257540] [2024-06-28 01:45:28,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:28,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:28,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:28,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:28,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:28,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:28,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 322 transitions, 5227 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:28,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:28,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:28,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:29,557 INFO L124 PetriNetUnfolderBase]: 1416/2793 cut-off events. [2024-06-28 01:45:29,557 INFO L125 PetriNetUnfolderBase]: For 43278/43286 co-relation queries the response was YES. [2024-06-28 01:45:29,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17918 conditions, 2793 events. 1416/2793 cut-off events. For 43278/43286 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18786 event pairs, 326 based on Foata normal form. 10/2600 useless extension candidates. Maximal degree in co-relation 17822. Up to 1321 conditions per place. [2024-06-28 01:45:29,573 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 224 selfloop transitions, 134 changer transitions 0/366 dead transitions. [2024-06-28 01:45:29,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 366 transitions, 6279 flow [2024-06-28 01:45:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:29,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:29,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 01:45:29,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-28 01:45:29,575 INFO L175 Difference]: Start difference. First operand has 198 places, 322 transitions, 5227 flow. Second operand 10 states and 183 transitions. [2024-06-28 01:45:29,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 366 transitions, 6279 flow [2024-06-28 01:45:29,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 366 transitions, 6261 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 01:45:29,745 INFO L231 Difference]: Finished difference. Result has 207 places, 324 transitions, 5517 flow [2024-06-28 01:45:29,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5217, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5517, PETRI_PLACES=207, PETRI_TRANSITIONS=324} [2024-06-28 01:45:29,746 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 167 predicate places. [2024-06-28 01:45:29,746 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 324 transitions, 5517 flow [2024-06-28 01:45:29,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:29,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:29,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:29,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:45:29,746 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:29,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:29,747 INFO L85 PathProgramCache]: Analyzing trace with hash -615241297, now seen corresponding path program 2 times [2024-06-28 01:45:29,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:29,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232884826] [2024-06-28 01:45:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:29,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:30,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:30,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232884826] [2024-06-28 01:45:30,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232884826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:30,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:30,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:30,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032726901] [2024-06-28 01:45:30,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:30,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:30,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:30,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:30,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:30,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:30,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 324 transitions, 5517 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:30,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:30,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:30,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:31,213 INFO L124 PetriNetUnfolderBase]: 1529/3120 cut-off events. [2024-06-28 01:45:31,213 INFO L125 PetriNetUnfolderBase]: For 56026/56039 co-relation queries the response was YES. [2024-06-28 01:45:31,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19282 conditions, 3120 events. 1529/3120 cut-off events. For 56026/56039 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 21969 event pairs, 445 based on Foata normal form. 29/2916 useless extension candidates. Maximal degree in co-relation 19183. Up to 2003 conditions per place. [2024-06-28 01:45:31,237 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 207 selfloop transitions, 147 changer transitions 0/362 dead transitions. [2024-06-28 01:45:31,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 362 transitions, 6449 flow [2024-06-28 01:45:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-28 01:45:31,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47453703703703703 [2024-06-28 01:45:31,239 INFO L175 Difference]: Start difference. First operand has 207 places, 324 transitions, 5517 flow. Second operand 12 states and 205 transitions. [2024-06-28 01:45:31,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 362 transitions, 6449 flow [2024-06-28 01:45:31,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 362 transitions, 6246 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:31,424 INFO L231 Difference]: Finished difference. Result has 213 places, 326 transitions, 5667 flow [2024-06-28 01:45:31,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5332, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5667, PETRI_PLACES=213, PETRI_TRANSITIONS=326} [2024-06-28 01:45:31,424 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 173 predicate places. [2024-06-28 01:45:31,424 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 326 transitions, 5667 flow [2024-06-28 01:45:31,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:31,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:31,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:31,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:45:31,425 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:31,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:31,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1484180634, now seen corresponding path program 1 times [2024-06-28 01:45:31,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:31,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865963044] [2024-06-28 01:45:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:31,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:32,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865963044] [2024-06-28 01:45:32,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865963044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:32,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:32,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:32,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872660241] [2024-06-28 01:45:32,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:32,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:32,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:32,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:32,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:32,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:32,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 326 transitions, 5667 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:32,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:32,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:32,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:32,962 INFO L124 PetriNetUnfolderBase]: 1603/3232 cut-off events. [2024-06-28 01:45:32,962 INFO L125 PetriNetUnfolderBase]: For 50128/50141 co-relation queries the response was YES. [2024-06-28 01:45:32,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20378 conditions, 3232 events. 1603/3232 cut-off events. For 50128/50141 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 22825 event pairs, 436 based on Foata normal form. 15/2992 useless extension candidates. Maximal degree in co-relation 20277. Up to 2184 conditions per place. [2024-06-28 01:45:32,988 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 212 selfloop transitions, 166 changer transitions 0/386 dead transitions. [2024-06-28 01:45:32,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 386 transitions, 7008 flow [2024-06-28 01:45:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:45:32,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:45:32,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 213 transitions. [2024-06-28 01:45:32,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-28 01:45:32,989 INFO L175 Difference]: Start difference. First operand has 213 places, 326 transitions, 5667 flow. Second operand 13 states and 213 transitions. [2024-06-28 01:45:32,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 386 transitions, 7008 flow [2024-06-28 01:45:33,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 386 transitions, 6721 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:33,217 INFO L231 Difference]: Finished difference. Result has 219 places, 351 transitions, 6176 flow [2024-06-28 01:45:33,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5380, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6176, PETRI_PLACES=219, PETRI_TRANSITIONS=351} [2024-06-28 01:45:33,218 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 179 predicate places. [2024-06-28 01:45:33,218 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 351 transitions, 6176 flow [2024-06-28 01:45:33,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:33,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:33,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:33,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:45:33,219 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:33,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1484176759, now seen corresponding path program 3 times [2024-06-28 01:45:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:33,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929573152] [2024-06-28 01:45:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:33,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:33,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:33,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929573152] [2024-06-28 01:45:33,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929573152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:33,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:33,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:33,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976582363] [2024-06-28 01:45:33,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:33,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:33,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:33,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:33,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:33,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:33,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 351 transitions, 6176 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:33,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:33,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:33,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:34,732 INFO L124 PetriNetUnfolderBase]: 1620/3287 cut-off events. [2024-06-28 01:45:34,732 INFO L125 PetriNetUnfolderBase]: For 53190/53203 co-relation queries the response was YES. [2024-06-28 01:45:34,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21129 conditions, 3287 events. 1620/3287 cut-off events. For 53190/53203 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 23265 event pairs, 467 based on Foata normal form. 15/3047 useless extension candidates. Maximal degree in co-relation 21025. Up to 2072 conditions per place. [2024-06-28 01:45:34,760 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 237 selfloop transitions, 146 changer transitions 0/391 dead transitions. [2024-06-28 01:45:34,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 391 transitions, 7166 flow [2024-06-28 01:45:34,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:34,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-28 01:45:34,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49747474747474746 [2024-06-28 01:45:34,761 INFO L175 Difference]: Start difference. First operand has 219 places, 351 transitions, 6176 flow. Second operand 11 states and 197 transitions. [2024-06-28 01:45:34,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 391 transitions, 7166 flow [2024-06-28 01:45:34,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 391 transitions, 7049 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:35,004 INFO L231 Difference]: Finished difference. Result has 224 places, 352 transitions, 6372 flow [2024-06-28 01:45:35,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6059, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6372, PETRI_PLACES=224, PETRI_TRANSITIONS=352} [2024-06-28 01:45:35,004 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 184 predicate places. [2024-06-28 01:45:35,005 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 352 transitions, 6372 flow [2024-06-28 01:45:35,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:35,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:35,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:35,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:45:35,005 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:35,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:35,006 INFO L85 PathProgramCache]: Analyzing trace with hash -310815211, now seen corresponding path program 4 times [2024-06-28 01:45:35,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:35,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39758531] [2024-06-28 01:45:35,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:35,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:35,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:35,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39758531] [2024-06-28 01:45:35,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39758531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:35,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:35,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:35,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390204320] [2024-06-28 01:45:35,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:35,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:35,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:35,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:35,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:35,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:35,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 352 transitions, 6372 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:35,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:35,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:35,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:36,288 INFO L124 PetriNetUnfolderBase]: 1696/3425 cut-off events. [2024-06-28 01:45:36,289 INFO L125 PetriNetUnfolderBase]: For 56884/56884 co-relation queries the response was YES. [2024-06-28 01:45:36,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22231 conditions, 3425 events. 1696/3425 cut-off events. For 56884/56884 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 24381 event pairs, 398 based on Foata normal form. 2/3171 useless extension candidates. Maximal degree in co-relation 22125. Up to 1593 conditions per place. [2024-06-28 01:45:36,332 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 278 selfloop transitions, 107 changer transitions 0/393 dead transitions. [2024-06-28 01:45:36,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 393 transitions, 7487 flow [2024-06-28 01:45:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:36,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:45:36,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:45:36,334 INFO L175 Difference]: Start difference. First operand has 224 places, 352 transitions, 6372 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:45:36,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 393 transitions, 7487 flow [2024-06-28 01:45:36,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 393 transitions, 7183 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:36,723 INFO L231 Difference]: Finished difference. Result has 225 places, 360 transitions, 6441 flow [2024-06-28 01:45:36,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6077, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6441, PETRI_PLACES=225, PETRI_TRANSITIONS=360} [2024-06-28 01:45:36,724 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 185 predicate places. [2024-06-28 01:45:36,724 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 360 transitions, 6441 flow [2024-06-28 01:45:36,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:36,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:36,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:36,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:45:36,724 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:36,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:36,725 INFO L85 PathProgramCache]: Analyzing trace with hash 326928103, now seen corresponding path program 5 times [2024-06-28 01:45:36,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:36,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567824956] [2024-06-28 01:45:36,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:36,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:37,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:37,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567824956] [2024-06-28 01:45:37,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567824956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:37,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:37,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:37,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947340161] [2024-06-28 01:45:37,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:37,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:37,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:37,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:37,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:37,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:37,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 360 transitions, 6441 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:37,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:37,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:37,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:38,042 INFO L124 PetriNetUnfolderBase]: 1763/3529 cut-off events. [2024-06-28 01:45:38,042 INFO L125 PetriNetUnfolderBase]: For 62517/62517 co-relation queries the response was YES. [2024-06-28 01:45:38,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23268 conditions, 3529 events. 1763/3529 cut-off events. For 62517/62517 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25424 event pairs, 482 based on Foata normal form. 2/3270 useless extension candidates. Maximal degree in co-relation 23160. Up to 1982 conditions per place. [2024-06-28 01:45:38,069 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 272 selfloop transitions, 116 changer transitions 0/396 dead transitions. [2024-06-28 01:45:38,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 396 transitions, 7550 flow [2024-06-28 01:45:38,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:38,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:45:38,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 01:45:38,071 INFO L175 Difference]: Start difference. First operand has 225 places, 360 transitions, 6441 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:45:38,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 396 transitions, 7550 flow [2024-06-28 01:45:38,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 396 transitions, 7324 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:38,365 INFO L231 Difference]: Finished difference. Result has 229 places, 365 transitions, 6562 flow [2024-06-28 01:45:38,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6258, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6562, PETRI_PLACES=229, PETRI_TRANSITIONS=365} [2024-06-28 01:45:38,366 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 189 predicate places. [2024-06-28 01:45:38,366 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 365 transitions, 6562 flow [2024-06-28 01:45:38,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:38,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:38,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:38,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:45:38,366 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:38,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:38,366 INFO L85 PathProgramCache]: Analyzing trace with hash 730090698, now seen corresponding path program 2 times [2024-06-28 01:45:38,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:38,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403908376] [2024-06-28 01:45:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:38,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:38,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:38,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403908376] [2024-06-28 01:45:38,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403908376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:38,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:38,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:38,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156695994] [2024-06-28 01:45:38,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:38,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:38,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:38,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:38,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:38,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 365 transitions, 6562 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:38,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:38,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:38,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:39,814 INFO L124 PetriNetUnfolderBase]: 1809/3671 cut-off events. [2024-06-28 01:45:39,814 INFO L125 PetriNetUnfolderBase]: For 65350/65350 co-relation queries the response was YES. [2024-06-28 01:45:39,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23773 conditions, 3671 events. 1809/3671 cut-off events. For 65350/65350 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 27034 event pairs, 585 based on Foata normal form. 2/3385 useless extension candidates. Maximal degree in co-relation 23664. Up to 2297 conditions per place. [2024-06-28 01:45:39,843 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 229 selfloop transitions, 172 changer transitions 0/409 dead transitions. [2024-06-28 01:45:39,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 409 transitions, 7934 flow [2024-06-28 01:45:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:39,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 01:45:39,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030864197530864 [2024-06-28 01:45:39,845 INFO L175 Difference]: Start difference. First operand has 229 places, 365 transitions, 6562 flow. Second operand 9 states and 163 transitions. [2024-06-28 01:45:39,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 409 transitions, 7934 flow [2024-06-28 01:45:40,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 409 transitions, 7805 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:40,087 INFO L231 Difference]: Finished difference. Result has 233 places, 381 transitions, 7082 flow [2024-06-28 01:45:40,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6437, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7082, PETRI_PLACES=233, PETRI_TRANSITIONS=381} [2024-06-28 01:45:40,088 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 193 predicate places. [2024-06-28 01:45:40,089 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 381 transitions, 7082 flow [2024-06-28 01:45:40,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:40,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:40,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:40,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:45:40,094 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:40,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:40,095 INFO L85 PathProgramCache]: Analyzing trace with hash 328805773, now seen corresponding path program 6 times [2024-06-28 01:45:40,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:40,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069160251] [2024-06-28 01:45:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:40,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:40,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:40,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069160251] [2024-06-28 01:45:40,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069160251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:40,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:40,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:40,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456864879] [2024-06-28 01:45:40,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:40,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:40,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:40,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:40,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:40,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:40,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 381 transitions, 7082 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:40,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:40,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:40,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:41,588 INFO L124 PetriNetUnfolderBase]: 1836/3735 cut-off events. [2024-06-28 01:45:41,588 INFO L125 PetriNetUnfolderBase]: For 67492/67492 co-relation queries the response was YES. [2024-06-28 01:45:41,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24861 conditions, 3735 events. 1836/3735 cut-off events. For 67492/67492 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 27660 event pairs, 638 based on Foata normal form. 2/3445 useless extension candidates. Maximal degree in co-relation 24750. Up to 2765 conditions per place. [2024-06-28 01:45:41,615 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 281 selfloop transitions, 114 changer transitions 0/403 dead transitions. [2024-06-28 01:45:41,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 403 transitions, 8002 flow [2024-06-28 01:45:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:45:41,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:45:41,616 INFO L175 Difference]: Start difference. First operand has 233 places, 381 transitions, 7082 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:45:41,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 403 transitions, 8002 flow [2024-06-28 01:45:41,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 403 transitions, 7633 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:41,896 INFO L231 Difference]: Finished difference. Result has 235 places, 383 transitions, 6994 flow [2024-06-28 01:45:41,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6729, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6994, PETRI_PLACES=235, PETRI_TRANSITIONS=383} [2024-06-28 01:45:41,897 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 195 predicate places. [2024-06-28 01:45:41,897 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 383 transitions, 6994 flow [2024-06-28 01:45:41,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:41,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:41,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:41,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:45:41,897 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:41,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:41,898 INFO L85 PathProgramCache]: Analyzing trace with hash 328802053, now seen corresponding path program 7 times [2024-06-28 01:45:41,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:41,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787106025] [2024-06-28 01:45:41,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:41,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:42,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:42,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787106025] [2024-06-28 01:45:42,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787106025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:42,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:42,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:42,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873791739] [2024-06-28 01:45:42,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:42,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:42,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:42,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:42,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:42,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:42,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 383 transitions, 6994 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:42,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:42,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:42,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:43,272 INFO L124 PetriNetUnfolderBase]: 1844/3764 cut-off events. [2024-06-28 01:45:43,272 INFO L125 PetriNetUnfolderBase]: For 63322/63322 co-relation queries the response was YES. [2024-06-28 01:45:43,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24469 conditions, 3764 events. 1844/3764 cut-off events. For 63322/63322 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 27973 event pairs, 607 based on Foata normal form. 2/3472 useless extension candidates. Maximal degree in co-relation 24359. Up to 2617 conditions per place. [2024-06-28 01:45:43,374 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 284 selfloop transitions, 117 changer transitions 0/409 dead transitions. [2024-06-28 01:45:43,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 409 transitions, 7933 flow [2024-06-28 01:45:43,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:43,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:45:43,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:45:43,375 INFO L175 Difference]: Start difference. First operand has 235 places, 383 transitions, 6994 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:45:43,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 409 transitions, 7933 flow [2024-06-28 01:45:43,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 409 transitions, 7709 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:43,669 INFO L231 Difference]: Finished difference. Result has 237 places, 384 transitions, 7032 flow [2024-06-28 01:45:43,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6770, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7032, PETRI_PLACES=237, PETRI_TRANSITIONS=384} [2024-06-28 01:45:43,669 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 197 predicate places. [2024-06-28 01:45:43,670 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 384 transitions, 7032 flow [2024-06-28 01:45:43,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:43,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:43,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:43,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:45:43,670 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:43,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash 587451505, now seen corresponding path program 8 times [2024-06-28 01:45:43,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:43,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002595166] [2024-06-28 01:45:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:43,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:44,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:44,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002595166] [2024-06-28 01:45:44,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002595166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:44,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:44,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:44,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807819374] [2024-06-28 01:45:44,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:44,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:44,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:44,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:44,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 384 transitions, 7032 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:44,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:44,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:44,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:45,567 INFO L124 PetriNetUnfolderBase]: 2007/4144 cut-off events. [2024-06-28 01:45:45,567 INFO L125 PetriNetUnfolderBase]: For 74579/74582 co-relation queries the response was YES. [2024-06-28 01:45:45,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26501 conditions, 4144 events. 2007/4144 cut-off events. For 74579/74582 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 31777 event pairs, 680 based on Foata normal form. 5/3833 useless extension candidates. Maximal degree in co-relation 26390. Up to 2729 conditions per place. [2024-06-28 01:45:45,603 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 299 selfloop transitions, 126 changer transitions 0/433 dead transitions. [2024-06-28 01:45:45,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 433 transitions, 8321 flow [2024-06-28 01:45:45,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:45,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:45:45,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-28 01:45:45,605 INFO L175 Difference]: Start difference. First operand has 237 places, 384 transitions, 7032 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:45:45,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 433 transitions, 8321 flow [2024-06-28 01:45:45,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 433 transitions, 8083 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:45,888 INFO L231 Difference]: Finished difference. Result has 241 places, 390 transitions, 7196 flow [2024-06-28 01:45:45,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6800, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7196, PETRI_PLACES=241, PETRI_TRANSITIONS=390} [2024-06-28 01:45:45,889 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 201 predicate places. [2024-06-28 01:45:45,889 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 390 transitions, 7196 flow [2024-06-28 01:45:45,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:45,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:45,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:45,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:45:45,889 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:45,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:45,889 INFO L85 PathProgramCache]: Analyzing trace with hash 310399080, now seen corresponding path program 3 times [2024-06-28 01:45:45,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:45,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862944809] [2024-06-28 01:45:45,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:45,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:46,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:46,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862944809] [2024-06-28 01:45:46,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862944809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:46,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:46,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:46,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508173730] [2024-06-28 01:45:46,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:46,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:46,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:46,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:46,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:46,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:46,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 390 transitions, 7196 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:46,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:46,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:46,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:47,499 INFO L124 PetriNetUnfolderBase]: 2057/4216 cut-off events. [2024-06-28 01:45:47,499 INFO L125 PetriNetUnfolderBase]: For 77425/77428 co-relation queries the response was YES. [2024-06-28 01:45:47,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27229 conditions, 4216 events. 2057/4216 cut-off events. For 77425/77428 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 32229 event pairs, 670 based on Foata normal form. 5/3865 useless extension candidates. Maximal degree in co-relation 27116. Up to 3024 conditions per place. [2024-06-28 01:45:47,541 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 269 selfloop transitions, 169 changer transitions 0/446 dead transitions. [2024-06-28 01:45:47,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 446 transitions, 8687 flow [2024-06-28 01:45:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:47,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:45:47,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:45:47,542 INFO L175 Difference]: Start difference. First operand has 241 places, 390 transitions, 7196 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:45:47,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 446 transitions, 8687 flow [2024-06-28 01:45:47,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 446 transitions, 8517 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:47,874 INFO L231 Difference]: Finished difference. Result has 248 places, 417 transitions, 7931 flow [2024-06-28 01:45:47,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7026, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7931, PETRI_PLACES=248, PETRI_TRANSITIONS=417} [2024-06-28 01:45:47,874 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 208 predicate places. [2024-06-28 01:45:47,874 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 417 transitions, 7931 flow [2024-06-28 01:45:47,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:47,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:47,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:47,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:45:47,875 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:47,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:47,875 INFO L85 PathProgramCache]: Analyzing trace with hash 310398925, now seen corresponding path program 9 times [2024-06-28 01:45:47,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:47,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069473803] [2024-06-28 01:45:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:47,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:48,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:48,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069473803] [2024-06-28 01:45:48,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069473803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:48,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:48,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:48,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560022626] [2024-06-28 01:45:48,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:48,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:48,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:48,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:48,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:48,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:48,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 417 transitions, 7931 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:48,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:48,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:48,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:49,783 INFO L124 PetriNetUnfolderBase]: 2172/4517 cut-off events. [2024-06-28 01:45:49,783 INFO L125 PetriNetUnfolderBase]: For 94530/94533 co-relation queries the response was YES. [2024-06-28 01:45:49,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29186 conditions, 4517 events. 2172/4517 cut-off events. For 94530/94533 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 35272 event pairs, 762 based on Foata normal form. 17/4172 useless extension candidates. Maximal degree in co-relation 29068. Up to 3222 conditions per place. [2024-06-28 01:45:49,829 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 329 selfloop transitions, 123 changer transitions 0/460 dead transitions. [2024-06-28 01:45:49,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 460 transitions, 9113 flow [2024-06-28 01:45:49,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:49,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:49,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 01:45:49,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2024-06-28 01:45:49,830 INFO L175 Difference]: Start difference. First operand has 248 places, 417 transitions, 7931 flow. Second operand 11 states and 194 transitions. [2024-06-28 01:45:49,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 460 transitions, 9113 flow [2024-06-28 01:45:50,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 460 transitions, 9083 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 01:45:50,221 INFO L231 Difference]: Finished difference. Result has 257 places, 419 transitions, 8201 flow [2024-06-28 01:45:50,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7901, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8201, PETRI_PLACES=257, PETRI_TRANSITIONS=419} [2024-06-28 01:45:50,221 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 217 predicate places. [2024-06-28 01:45:50,222 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 419 transitions, 8201 flow [2024-06-28 01:45:50,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:50,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:50,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:50,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:45:50,222 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:50,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:50,223 INFO L85 PathProgramCache]: Analyzing trace with hash 315905610, now seen corresponding path program 4 times [2024-06-28 01:45:50,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:50,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011375907] [2024-06-28 01:45:50,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:50,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:50,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:50,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011375907] [2024-06-28 01:45:50,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011375907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:50,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:50,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:50,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251763800] [2024-06-28 01:45:50,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:50,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:50,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:50,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:50,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:50,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:50,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 419 transitions, 8201 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:45:50,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:50,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:50,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:52,140 INFO L124 PetriNetUnfolderBase]: 2185/4522 cut-off events. [2024-06-28 01:45:52,140 INFO L125 PetriNetUnfolderBase]: For 86855/86868 co-relation queries the response was YES. [2024-06-28 01:45:52,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29730 conditions, 4522 events. 2185/4522 cut-off events. For 86855/86868 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 35344 event pairs, 711 based on Foata normal form. 15/4171 useless extension candidates. Maximal degree in co-relation 29610. Up to 3348 conditions per place. [2024-06-28 01:45:52,187 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 308 selfloop transitions, 133 changer transitions 0/449 dead transitions. [2024-06-28 01:45:52,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 449 transitions, 9261 flow [2024-06-28 01:45:52,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:52,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:52,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:45:52,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-28 01:45:52,188 INFO L175 Difference]: Start difference. First operand has 257 places, 419 transitions, 8201 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:45:52,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 449 transitions, 9261 flow [2024-06-28 01:45:52,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 449 transitions, 9014 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:52,607 INFO L231 Difference]: Finished difference. Result has 259 places, 421 transitions, 8267 flow [2024-06-28 01:45:52,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7954, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8267, PETRI_PLACES=259, PETRI_TRANSITIONS=421} [2024-06-28 01:45:52,608 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 219 predicate places. [2024-06-28 01:45:52,608 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 421 transitions, 8267 flow [2024-06-28 01:45:52,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:45:52,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:52,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:52,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:45:52,608 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:52,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:52,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1228298125, now seen corresponding path program 10 times [2024-06-28 01:45:52,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:52,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221147338] [2024-06-28 01:45:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:52,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:53,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:53,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221147338] [2024-06-28 01:45:53,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221147338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:53,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:53,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:53,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361799708] [2024-06-28 01:45:53,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:53,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:53,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:53,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:53,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:53,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:53,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 421 transitions, 8267 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:45:53,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:53,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:53,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:54,676 INFO L124 PetriNetUnfolderBase]: 2233/4686 cut-off events. [2024-06-28 01:45:54,676 INFO L125 PetriNetUnfolderBase]: For 88958/88971 co-relation queries the response was YES. [2024-06-28 01:45:54,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29706 conditions, 4686 events. 2233/4686 cut-off events. For 88958/88971 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 37137 event pairs, 808 based on Foata normal form. 27/4333 useless extension candidates. Maximal degree in co-relation 29585. Up to 3403 conditions per place. [2024-06-28 01:45:54,721 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 356 selfloop transitions, 94 changer transitions 0/458 dead transitions. [2024-06-28 01:45:54,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 458 transitions, 9389 flow [2024-06-28 01:45:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:54,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:54,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:45:54,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-28 01:45:54,722 INFO L175 Difference]: Start difference. First operand has 259 places, 421 transitions, 8267 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:45:54,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 458 transitions, 9389 flow [2024-06-28 01:45:55,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 458 transitions, 9166 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:55,077 INFO L231 Difference]: Finished difference. Result has 262 places, 422 transitions, 8266 flow [2024-06-28 01:45:55,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8050, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8266, PETRI_PLACES=262, PETRI_TRANSITIONS=422} [2024-06-28 01:45:55,077 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 222 predicate places. [2024-06-28 01:45:55,078 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 422 transitions, 8266 flow [2024-06-28 01:45:55,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:45:55,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:55,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:55,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:45:55,078 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:55,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:55,078 INFO L85 PathProgramCache]: Analyzing trace with hash 587599530, now seen corresponding path program 5 times [2024-06-28 01:45:55,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:55,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625337308] [2024-06-28 01:45:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:55,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:55,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:55,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625337308] [2024-06-28 01:45:55,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625337308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:55,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:55,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:55,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961597170] [2024-06-28 01:45:55,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:55,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:55,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:55,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:55,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:55,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:55,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 422 transitions, 8266 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:55,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:55,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:55,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:57,010 INFO L124 PetriNetUnfolderBase]: 2234/4661 cut-off events. [2024-06-28 01:45:57,010 INFO L125 PetriNetUnfolderBase]: For 72014/72017 co-relation queries the response was YES. [2024-06-28 01:45:57,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29443 conditions, 4661 events. 2234/4661 cut-off events. For 72014/72017 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 36860 event pairs, 758 based on Foata normal form. 5/4271 useless extension candidates. Maximal degree in co-relation 29321. Up to 3499 conditions per place. [2024-06-28 01:45:57,056 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 314 selfloop transitions, 133 changer transitions 0/455 dead transitions. [2024-06-28 01:45:57,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 455 transitions, 9374 flow [2024-06-28 01:45:57,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:57,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:45:57,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 01:45:57,058 INFO L175 Difference]: Start difference. First operand has 262 places, 422 transitions, 8266 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:45:57,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 455 transitions, 9374 flow [2024-06-28 01:45:57,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 455 transitions, 9153 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:57,426 INFO L231 Difference]: Finished difference. Result has 266 places, 426 transitions, 8399 flow [2024-06-28 01:45:57,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8053, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8399, PETRI_PLACES=266, PETRI_TRANSITIONS=426} [2024-06-28 01:45:57,426 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 226 predicate places. [2024-06-28 01:45:57,426 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 426 transitions, 8399 flow [2024-06-28 01:45:57,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:57,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:57,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:57,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:45:57,427 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:57,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:57,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1842231081, now seen corresponding path program 11 times [2024-06-28 01:45:57,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:57,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155758113] [2024-06-28 01:45:57,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:57,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:58,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:58,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155758113] [2024-06-28 01:45:58,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155758113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:58,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:58,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:58,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656445749] [2024-06-28 01:45:58,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:58,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:58,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:58,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:58,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:58,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:45:58,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 426 transitions, 8399 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:58,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:58,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:45:58,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:59,148 INFO L124 PetriNetUnfolderBase]: 2385/4926 cut-off events. [2024-06-28 01:45:59,149 INFO L125 PetriNetUnfolderBase]: For 92111/92119 co-relation queries the response was YES. [2024-06-28 01:45:59,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31458 conditions, 4926 events. 2385/4926 cut-off events. For 92111/92119 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 39001 event pairs, 582 based on Foata normal form. 10/4570 useless extension candidates. Maximal degree in co-relation 31334. Up to 2237 conditions per place. [2024-06-28 01:45:59,197 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 206 selfloop transitions, 257 changer transitions 0/471 dead transitions. [2024-06-28 01:45:59,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 471 transitions, 9787 flow [2024-06-28 01:45:59,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:45:59,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-28 01:45:59,198 INFO L175 Difference]: Start difference. First operand has 266 places, 426 transitions, 8399 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:45:59,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 471 transitions, 9787 flow [2024-06-28 01:45:59,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 471 transitions, 9623 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:59,681 INFO L231 Difference]: Finished difference. Result has 269 places, 428 transitions, 8794 flow [2024-06-28 01:45:59,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8235, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8794, PETRI_PLACES=269, PETRI_TRANSITIONS=428} [2024-06-28 01:45:59,682 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 229 predicate places. [2024-06-28 01:45:59,682 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 428 transitions, 8794 flow [2024-06-28 01:45:59,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:59,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:59,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:59,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:45:59,682 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:59,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1840353256, now seen corresponding path program 6 times [2024-06-28 01:45:59,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:59,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371532437] [2024-06-28 01:45:59,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:59,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:00,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:00,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371532437] [2024-06-28 01:46:00,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371532437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:00,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:00,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:00,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708809302] [2024-06-28 01:46:00,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:00,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:00,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:00,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:00,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:00,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:00,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 428 transitions, 8794 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:00,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:00,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:00,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:01,291 INFO L124 PetriNetUnfolderBase]: 2430/5089 cut-off events. [2024-06-28 01:46:01,291 INFO L125 PetriNetUnfolderBase]: For 99548/99556 co-relation queries the response was YES. [2024-06-28 01:46:01,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33022 conditions, 5089 events. 2430/5089 cut-off events. For 99548/99556 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 41062 event pairs, 833 based on Foata normal form. 10/4686 useless extension candidates. Maximal degree in co-relation 32897. Up to 3390 conditions per place. [2024-06-28 01:46:01,340 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 219 selfloop transitions, 238 changer transitions 0/465 dead transitions. [2024-06-28 01:46:01,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 465 transitions, 10147 flow [2024-06-28 01:46:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:01,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:46:01,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:46:01,342 INFO L175 Difference]: Start difference. First operand has 269 places, 428 transitions, 8794 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:46:01,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 465 transitions, 10147 flow [2024-06-28 01:46:01,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 465 transitions, 9775 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:01,811 INFO L231 Difference]: Finished difference. Result has 272 places, 440 transitions, 9136 flow [2024-06-28 01:46:01,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8435, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9136, PETRI_PLACES=272, PETRI_TRANSITIONS=440} [2024-06-28 01:46:01,812 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 232 predicate places. [2024-06-28 01:46:01,812 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 440 transitions, 9136 flow [2024-06-28 01:46:01,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:01,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:01,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:01,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:46:01,813 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:01,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:01,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1840357131, now seen corresponding path program 12 times [2024-06-28 01:46:01,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:01,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763495787] [2024-06-28 01:46:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:01,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:02,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:02,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763495787] [2024-06-28 01:46:02,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763495787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:02,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:02,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:02,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548528536] [2024-06-28 01:46:02,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:02,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:02,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:02,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:02,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:02,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:02,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 440 transitions, 9136 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:02,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:02,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:02,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:03,892 INFO L124 PetriNetUnfolderBase]: 2722/5839 cut-off events. [2024-06-28 01:46:03,892 INFO L125 PetriNetUnfolderBase]: For 123008/123021 co-relation queries the response was YES. [2024-06-28 01:46:03,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36771 conditions, 5839 events. 2722/5839 cut-off events. For 123008/123021 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 49297 event pairs, 875 based on Foata normal form. 15/5400 useless extension candidates. Maximal degree in co-relation 36645. Up to 3071 conditions per place. [2024-06-28 01:46:03,955 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 222 selfloop transitions, 269 changer transitions 0/499 dead transitions. [2024-06-28 01:46:03,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 499 transitions, 10832 flow [2024-06-28 01:46:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:46:03,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-28 01:46:03,956 INFO L175 Difference]: Start difference. First operand has 272 places, 440 transitions, 9136 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:46:03,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 499 transitions, 10832 flow [2024-06-28 01:46:04,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 499 transitions, 10489 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:04,481 INFO L231 Difference]: Finished difference. Result has 278 places, 449 transitions, 9552 flow [2024-06-28 01:46:04,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8793, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9552, PETRI_PLACES=278, PETRI_TRANSITIONS=449} [2024-06-28 01:46:04,482 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 238 predicate places. [2024-06-28 01:46:04,482 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 449 transitions, 9552 flow [2024-06-28 01:46:04,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:04,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:04,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:04,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:46:04,482 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:04,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:04,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1840353411, now seen corresponding path program 13 times [2024-06-28 01:46:04,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:04,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2442896] [2024-06-28 01:46:04,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:04,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:05,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:05,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2442896] [2024-06-28 01:46:05,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2442896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:05,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:05,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:05,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126724963] [2024-06-28 01:46:05,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:05,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:05,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:05,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:05,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:05,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:05,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 449 transitions, 9552 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:05,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:05,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:05,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:06,483 INFO L124 PetriNetUnfolderBase]: 2700/5763 cut-off events. [2024-06-28 01:46:06,483 INFO L125 PetriNetUnfolderBase]: For 127077/127090 co-relation queries the response was YES. [2024-06-28 01:46:06,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36517 conditions, 5763 events. 2700/5763 cut-off events. For 127077/127090 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 48425 event pairs, 954 based on Foata normal form. 29/5348 useless extension candidates. Maximal degree in co-relation 36389. Up to 3385 conditions per place. [2024-06-28 01:46:06,541 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 222 selfloop transitions, 265 changer transitions 0/495 dead transitions. [2024-06-28 01:46:06,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 495 transitions, 10974 flow [2024-06-28 01:46:06,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 01:46:06,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823232323232323 [2024-06-28 01:46:06,542 INFO L175 Difference]: Start difference. First operand has 278 places, 449 transitions, 9552 flow. Second operand 11 states and 191 transitions. [2024-06-28 01:46:06,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 495 transitions, 10974 flow [2024-06-28 01:46:07,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 495 transitions, 10619 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:07,022 INFO L231 Difference]: Finished difference. Result has 283 places, 449 transitions, 9762 flow [2024-06-28 01:46:07,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9197, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9762, PETRI_PLACES=283, PETRI_TRANSITIONS=449} [2024-06-28 01:46:07,023 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 243 predicate places. [2024-06-28 01:46:07,023 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 449 transitions, 9762 flow [2024-06-28 01:46:07,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:07,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:07,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:07,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:46:07,024 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:07,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:07,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1372850932, now seen corresponding path program 7 times [2024-06-28 01:46:07,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:07,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128526740] [2024-06-28 01:46:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:07,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:07,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:07,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128526740] [2024-06-28 01:46:07,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128526740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:07,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:07,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:07,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266073525] [2024-06-28 01:46:07,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:07,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:07,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:07,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:07,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:07,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:07,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 449 transitions, 9762 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:07,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:07,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:07,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:09,360 INFO L124 PetriNetUnfolderBase]: 2752/5803 cut-off events. [2024-06-28 01:46:09,360 INFO L125 PetriNetUnfolderBase]: For 112000/112013 co-relation queries the response was YES. [2024-06-28 01:46:09,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37759 conditions, 5803 events. 2752/5803 cut-off events. For 112000/112013 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 48536 event pairs, 988 based on Foata normal form. 15/5337 useless extension candidates. Maximal degree in co-relation 37629. Up to 4409 conditions per place. [2024-06-28 01:46:09,409 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 336 selfloop transitions, 151 changer transitions 0/495 dead transitions. [2024-06-28 01:46:09,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 495 transitions, 11281 flow [2024-06-28 01:46:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:46:09,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 01:46:09,410 INFO L175 Difference]: Start difference. First operand has 283 places, 449 transitions, 9762 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:46:09,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 495 transitions, 11281 flow [2024-06-28 01:46:09,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 495 transitions, 10719 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:46:09,985 INFO L231 Difference]: Finished difference. Result has 285 places, 467 transitions, 9931 flow [2024-06-28 01:46:09,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9216, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9931, PETRI_PLACES=285, PETRI_TRANSITIONS=467} [2024-06-28 01:46:09,986 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 245 predicate places. [2024-06-28 01:46:09,986 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 467 transitions, 9931 flow [2024-06-28 01:46:09,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:09,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:09,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:09,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:46:09,986 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:09,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:09,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1753661446, now seen corresponding path program 8 times [2024-06-28 01:46:09,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:09,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638264534] [2024-06-28 01:46:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:09,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:10,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:10,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638264534] [2024-06-28 01:46:10,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638264534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:10,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:10,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:10,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174586546] [2024-06-28 01:46:10,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:10,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:10,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:10,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:10,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:10,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:10,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 467 transitions, 9931 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:10,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:10,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:10,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:12,164 INFO L124 PetriNetUnfolderBase]: 2796/5872 cut-off events. [2024-06-28 01:46:12,164 INFO L125 PetriNetUnfolderBase]: For 115057/115057 co-relation queries the response was YES. [2024-06-28 01:46:12,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38154 conditions, 5872 events. 2796/5872 cut-off events. For 115057/115057 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 48992 event pairs, 1307 based on Foata normal form. 2/5372 useless extension candidates. Maximal degree in co-relation 38021. Up to 4571 conditions per place. [2024-06-28 01:46:12,229 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 345 selfloop transitions, 155 changer transitions 0/508 dead transitions. [2024-06-28 01:46:12,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 508 transitions, 11480 flow [2024-06-28 01:46:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:46:12,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:46:12,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-06-28 01:46:12,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-28 01:46:12,230 INFO L175 Difference]: Start difference. First operand has 285 places, 467 transitions, 9931 flow. Second operand 12 states and 183 transitions. [2024-06-28 01:46:12,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 508 transitions, 11480 flow [2024-06-28 01:46:12,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 508 transitions, 11183 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:12,819 INFO L231 Difference]: Finished difference. Result has 294 places, 485 transitions, 10425 flow [2024-06-28 01:46:12,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9641, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10425, PETRI_PLACES=294, PETRI_TRANSITIONS=485} [2024-06-28 01:46:12,819 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 254 predicate places. [2024-06-28 01:46:12,819 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 485 transitions, 10425 flow [2024-06-28 01:46:12,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:12,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:12,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:12,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:46:12,820 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:12,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1820360949, now seen corresponding path program 14 times [2024-06-28 01:46:12,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:12,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797059965] [2024-06-28 01:46:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:12,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:13,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:13,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797059965] [2024-06-28 01:46:13,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797059965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:13,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:13,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:13,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429366435] [2024-06-28 01:46:13,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:13,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:13,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:13,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:13,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 485 transitions, 10425 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:13,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:13,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:13,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:15,053 INFO L124 PetriNetUnfolderBase]: 3164/6758 cut-off events. [2024-06-28 01:46:15,053 INFO L125 PetriNetUnfolderBase]: For 133994/133994 co-relation queries the response was YES. [2024-06-28 01:46:15,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42719 conditions, 6758 events. 3164/6758 cut-off events. For 133994/133994 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 59185 event pairs, 1393 based on Foata normal form. 2/6205 useless extension candidates. Maximal degree in co-relation 42583. Up to 3974 conditions per place. [2024-06-28 01:46:15,127 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 323 selfloop transitions, 223 changer transitions 0/554 dead transitions. [2024-06-28 01:46:15,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 554 transitions, 12745 flow [2024-06-28 01:46:15,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:15,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:15,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 01:46:15,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-28 01:46:15,128 INFO L175 Difference]: Start difference. First operand has 294 places, 485 transitions, 10425 flow. Second operand 10 states and 176 transitions. [2024-06-28 01:46:15,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 554 transitions, 12745 flow [2024-06-28 01:46:15,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 554 transitions, 12374 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 01:46:15,846 INFO L231 Difference]: Finished difference. Result has 296 places, 512 transitions, 11487 flow [2024-06-28 01:46:15,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10054, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11487, PETRI_PLACES=296, PETRI_TRANSITIONS=512} [2024-06-28 01:46:15,847 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 256 predicate places. [2024-06-28 01:46:15,847 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 512 transitions, 11487 flow [2024-06-28 01:46:15,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:15,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:15,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:15,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:46:15,847 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:15,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:15,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1820364824, now seen corresponding path program 9 times [2024-06-28 01:46:15,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:15,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996648149] [2024-06-28 01:46:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:15,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:16,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:16,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996648149] [2024-06-28 01:46:16,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996648149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:16,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:16,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:16,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536549919] [2024-06-28 01:46:16,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:16,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:16,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:16,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:16,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:16,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 512 transitions, 11487 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:16,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:16,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:16,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:18,217 INFO L124 PetriNetUnfolderBase]: 3187/6774 cut-off events. [2024-06-28 01:46:18,217 INFO L125 PetriNetUnfolderBase]: For 139949/139952 co-relation queries the response was YES. [2024-06-28 01:46:18,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43942 conditions, 6774 events. 3187/6774 cut-off events. For 139949/139952 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 59227 event pairs, 1192 based on Foata normal form. 5/6205 useless extension candidates. Maximal degree in co-relation 43803. Up to 4940 conditions per place. [2024-06-28 01:46:18,279 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 286 selfloop transitions, 261 changer transitions 0/555 dead transitions. [2024-06-28 01:46:18,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 555 transitions, 13115 flow [2024-06-28 01:46:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:18,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:46:18,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-28 01:46:18,280 INFO L175 Difference]: Start difference. First operand has 296 places, 512 transitions, 11487 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:46:18,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 555 transitions, 13115 flow [2024-06-28 01:46:19,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 555 transitions, 12379 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:19,083 INFO L231 Difference]: Finished difference. Result has 297 places, 518 transitions, 11410 flow [2024-06-28 01:46:19,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10751, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11410, PETRI_PLACES=297, PETRI_TRANSITIONS=518} [2024-06-28 01:46:19,084 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 257 predicate places. [2024-06-28 01:46:19,084 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 518 transitions, 11410 flow [2024-06-28 01:46:19,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:19,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:19,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:19,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:46:19,084 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:19,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:19,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1820364669, now seen corresponding path program 15 times [2024-06-28 01:46:19,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:19,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547754386] [2024-06-28 01:46:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:19,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:19,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:19,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547754386] [2024-06-28 01:46:19,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547754386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:19,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:19,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:19,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713492058] [2024-06-28 01:46:19,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:19,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:19,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:19,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:19,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:19,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 518 transitions, 11410 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:19,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:19,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:19,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:21,471 INFO L124 PetriNetUnfolderBase]: 3190/6818 cut-off events. [2024-06-28 01:46:21,471 INFO L125 PetriNetUnfolderBase]: For 125919/125922 co-relation queries the response was YES. [2024-06-28 01:46:21,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42952 conditions, 6818 events. 3190/6818 cut-off events. For 125919/125922 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 59887 event pairs, 1342 based on Foata normal form. 5/6243 useless extension candidates. Maximal degree in co-relation 42813. Up to 5299 conditions per place. [2024-06-28 01:46:21,548 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 397 selfloop transitions, 150 changer transitions 0/555 dead transitions. [2024-06-28 01:46:21,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 555 transitions, 12864 flow [2024-06-28 01:46:21,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:21,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:46:21,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:46:21,549 INFO L175 Difference]: Start difference. First operand has 297 places, 518 transitions, 11410 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:46:21,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 555 transitions, 12864 flow [2024-06-28 01:46:22,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 555 transitions, 12431 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:22,372 INFO L231 Difference]: Finished difference. Result has 298 places, 525 transitions, 11426 flow [2024-06-28 01:46:22,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10977, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11426, PETRI_PLACES=298, PETRI_TRANSITIONS=525} [2024-06-28 01:46:22,372 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 258 predicate places. [2024-06-28 01:46:22,372 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 525 transitions, 11426 flow [2024-06-28 01:46:22,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:22,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:22,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:22,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:46:22,373 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:22,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:22,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1545679794, now seen corresponding path program 10 times [2024-06-28 01:46:22,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:22,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39993437] [2024-06-28 01:46:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:22,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:23,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:23,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39993437] [2024-06-28 01:46:23,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39993437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:23,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:23,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:23,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840415528] [2024-06-28 01:46:23,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:23,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:23,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:23,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:23,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:23,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:23,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 525 transitions, 11426 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:23,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:23,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:23,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:25,095 INFO L124 PetriNetUnfolderBase]: 3249/6957 cut-off events. [2024-06-28 01:46:25,095 INFO L125 PetriNetUnfolderBase]: For 132268/132281 co-relation queries the response was YES. [2024-06-28 01:46:25,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43687 conditions, 6957 events. 3249/6957 cut-off events. For 132268/132281 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 61284 event pairs, 1223 based on Foata normal form. 15/6357 useless extension candidates. Maximal degree in co-relation 43548. Up to 5267 conditions per place. [2024-06-28 01:46:25,158 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 400 selfloop transitions, 172 changer transitions 0/580 dead transitions. [2024-06-28 01:46:25,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 580 transitions, 13335 flow [2024-06-28 01:46:25,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:46:25,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-06-28 01:46:25,158 INFO L175 Difference]: Start difference. First operand has 298 places, 525 transitions, 11426 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:46:25,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 580 transitions, 13335 flow [2024-06-28 01:46:25,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 580 transitions, 13033 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:25,876 INFO L231 Difference]: Finished difference. Result has 303 places, 545 transitions, 12012 flow [2024-06-28 01:46:25,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11128, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12012, PETRI_PLACES=303, PETRI_TRANSITIONS=545} [2024-06-28 01:46:25,877 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 263 predicate places. [2024-06-28 01:46:25,877 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 545 transitions, 12012 flow [2024-06-28 01:46:25,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:25,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:25,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:25,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:46:25,878 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:25,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:25,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1820514554, now seen corresponding path program 11 times [2024-06-28 01:46:25,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:25,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996244350] [2024-06-28 01:46:25,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:25,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:26,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:26,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996244350] [2024-06-28 01:46:26,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996244350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:26,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:26,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:26,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565611471] [2024-06-28 01:46:26,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:26,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:26,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:26,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:26,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 545 transitions, 12012 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:26,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:26,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:26,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:28,360 INFO L124 PetriNetUnfolderBase]: 3277/6944 cut-off events. [2024-06-28 01:46:28,360 INFO L125 PetriNetUnfolderBase]: For 134316/134319 co-relation queries the response was YES. [2024-06-28 01:46:28,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44315 conditions, 6944 events. 3277/6944 cut-off events. For 134316/134319 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 60742 event pairs, 1230 based on Foata normal form. 5/6331 useless extension candidates. Maximal degree in co-relation 44174. Up to 5371 conditions per place. [2024-06-28 01:46:28,434 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 414 selfloop transitions, 160 changer transitions 0/582 dead transitions. [2024-06-28 01:46:28,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 582 transitions, 13625 flow [2024-06-28 01:46:28,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:28,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:46:28,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660493827160494 [2024-06-28 01:46:28,435 INFO L175 Difference]: Start difference. First operand has 303 places, 545 transitions, 12012 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:46:28,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 582 transitions, 13625 flow [2024-06-28 01:46:29,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 582 transitions, 13203 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:29,364 INFO L231 Difference]: Finished difference. Result has 303 places, 553 transitions, 12157 flow [2024-06-28 01:46:29,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11590, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12157, PETRI_PLACES=303, PETRI_TRANSITIONS=553} [2024-06-28 01:46:29,365 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 263 predicate places. [2024-06-28 01:46:29,365 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 553 transitions, 12157 flow [2024-06-28 01:46:29,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:29,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:29,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:29,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:46:29,365 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:29,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:29,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1820508974, now seen corresponding path program 12 times [2024-06-28 01:46:29,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:29,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439737730] [2024-06-28 01:46:29,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:29,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:30,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:30,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439737730] [2024-06-28 01:46:30,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439737730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:30,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:30,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:46:30,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120064975] [2024-06-28 01:46:30,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:30,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:46:30,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:30,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:46:30,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:46:30,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:30,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 553 transitions, 12157 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:30,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:30,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:30,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:31,702 INFO L124 PetriNetUnfolderBase]: 3305/7044 cut-off events. [2024-06-28 01:46:31,702 INFO L125 PetriNetUnfolderBase]: For 139718/139718 co-relation queries the response was YES. [2024-06-28 01:46:31,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44636 conditions, 7044 events. 3305/7044 cut-off events. For 139718/139718 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 61869 event pairs, 1504 based on Foata normal form. 2/6409 useless extension candidates. Maximal degree in co-relation 44494. Up to 5466 conditions per place. [2024-06-28 01:46:31,782 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 414 selfloop transitions, 164 changer transitions 0/586 dead transitions. [2024-06-28 01:46:31,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 586 transitions, 13709 flow [2024-06-28 01:46:31,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:31,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:31,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:46:31,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:46:31,783 INFO L175 Difference]: Start difference. First operand has 303 places, 553 transitions, 12157 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:46:31,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 586 transitions, 13709 flow [2024-06-28 01:46:32,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 586 transitions, 13352 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:32,731 INFO L231 Difference]: Finished difference. Result has 306 places, 561 transitions, 12330 flow [2024-06-28 01:46:32,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11800, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12330, PETRI_PLACES=306, PETRI_TRANSITIONS=561} [2024-06-28 01:46:32,732 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 266 predicate places. [2024-06-28 01:46:32,732 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 561 transitions, 12330 flow [2024-06-28 01:46:32,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:32,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:32,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:32,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:46:32,732 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:32,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:32,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1825871199, now seen corresponding path program 16 times [2024-06-28 01:46:32,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:32,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132688253] [2024-06-28 01:46:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:32,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:33,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:33,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132688253] [2024-06-28 01:46:33,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132688253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:33,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:33,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:33,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466914054] [2024-06-28 01:46:33,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:33,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:33,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:33,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:33,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:33,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 561 transitions, 12330 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:33,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:33,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:33,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:35,185 INFO L124 PetriNetUnfolderBase]: 3365/7198 cut-off events. [2024-06-28 01:46:35,185 INFO L125 PetriNetUnfolderBase]: For 139185/139198 co-relation queries the response was YES. [2024-06-28 01:46:35,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45394 conditions, 7198 events. 3365/7198 cut-off events. For 139185/139198 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 63710 event pairs, 1371 based on Foata normal form. 15/6574 useless extension candidates. Maximal degree in co-relation 45251. Up to 5648 conditions per place. [2024-06-28 01:46:35,273 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 489 selfloop transitions, 95 changer transitions 0/592 dead transitions. [2024-06-28 01:46:35,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 592 transitions, 13793 flow [2024-06-28 01:46:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:35,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:46:35,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 01:46:35,274 INFO L175 Difference]: Start difference. First operand has 306 places, 561 transitions, 12330 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:46:35,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 592 transitions, 13793 flow [2024-06-28 01:46:36,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 592 transitions, 13434 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:36,181 INFO L231 Difference]: Finished difference. Result has 310 places, 566 transitions, 12283 flow [2024-06-28 01:46:36,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11971, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12283, PETRI_PLACES=310, PETRI_TRANSITIONS=566} [2024-06-28 01:46:36,182 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 270 predicate places. [2024-06-28 01:46:36,182 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 566 transitions, 12283 flow [2024-06-28 01:46:36,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:36,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:36,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:36,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:46:36,182 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:36,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:36,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1551042329, now seen corresponding path program 17 times [2024-06-28 01:46:36,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:36,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571943460] [2024-06-28 01:46:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:36,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:36,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:36,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571943460] [2024-06-28 01:46:36,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571943460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:36,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:36,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:36,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007636411] [2024-06-28 01:46:36,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:36,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:36,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:36,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:36,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:36,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 566 transitions, 12283 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:36,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:36,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:36,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:38,687 INFO L124 PetriNetUnfolderBase]: 3558/7716 cut-off events. [2024-06-28 01:46:38,687 INFO L125 PetriNetUnfolderBase]: For 164479/164482 co-relation queries the response was YES. [2024-06-28 01:46:38,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47195 conditions, 7716 events. 3558/7716 cut-off events. For 164479/164482 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 69568 event pairs, 1305 based on Foata normal form. 17/7064 useless extension candidates. Maximal degree in co-relation 47051. Up to 5151 conditions per place. [2024-06-28 01:46:38,774 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 429 selfloop transitions, 173 changer transitions 0/610 dead transitions. [2024-06-28 01:46:38,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 610 transitions, 13905 flow [2024-06-28 01:46:38,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:38,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 01:46:38,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49691358024691357 [2024-06-28 01:46:38,775 INFO L175 Difference]: Start difference. First operand has 310 places, 566 transitions, 12283 flow. Second operand 9 states and 161 transitions. [2024-06-28 01:46:38,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 610 transitions, 13905 flow [2024-06-28 01:46:39,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 610 transitions, 13674 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:39,680 INFO L231 Difference]: Finished difference. Result has 311 places, 570 transitions, 12520 flow [2024-06-28 01:46:39,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12052, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12520, PETRI_PLACES=311, PETRI_TRANSITIONS=570} [2024-06-28 01:46:39,681 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 271 predicate places. [2024-06-28 01:46:39,681 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 570 transitions, 12520 flow [2024-06-28 01:46:39,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:39,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:39,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:39,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:46:39,681 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:39,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:39,681 INFO L85 PathProgramCache]: Analyzing trace with hash 534249470, now seen corresponding path program 1 times [2024-06-28 01:46:39,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:39,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044710537] [2024-06-28 01:46:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:39,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:40,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:40,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044710537] [2024-06-28 01:46:40,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044710537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:40,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:40,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:40,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479409306] [2024-06-28 01:46:40,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:40,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:40,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:40,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:40,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:40,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:40,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 570 transitions, 12520 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:40,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:40,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:40,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:42,484 INFO L124 PetriNetUnfolderBase]: 3586/7755 cut-off events. [2024-06-28 01:46:42,484 INFO L125 PetriNetUnfolderBase]: For 149644/149644 co-relation queries the response was YES. [2024-06-28 01:46:42,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47753 conditions, 7755 events. 3586/7755 cut-off events. For 149644/149644 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 70253 event pairs, 1718 based on Foata normal form. 2/7064 useless extension candidates. Maximal degree in co-relation 47610. Up to 6306 conditions per place. [2024-06-28 01:46:42,554 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 562 selfloop transitions, 20 changer transitions 0/590 dead transitions. [2024-06-28 01:46:42,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 590 transitions, 13821 flow [2024-06-28 01:46:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 01:46:42,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-06-28 01:46:42,555 INFO L175 Difference]: Start difference. First operand has 311 places, 570 transitions, 12520 flow. Second operand 9 states and 136 transitions. [2024-06-28 01:46:42,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 590 transitions, 13821 flow [2024-06-28 01:46:43,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 590 transitions, 13472 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:43,479 INFO L231 Difference]: Finished difference. Result has 313 places, 571 transitions, 12239 flow [2024-06-28 01:46:43,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12171, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12239, PETRI_PLACES=313, PETRI_TRANSITIONS=571} [2024-06-28 01:46:43,480 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 273 predicate places. [2024-06-28 01:46:43,480 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 571 transitions, 12239 flow [2024-06-28 01:46:43,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:43,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:43,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:43,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:46:43,480 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:43,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:43,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1454483096, now seen corresponding path program 2 times [2024-06-28 01:46:43,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:43,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633096957] [2024-06-28 01:46:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:43,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:44,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:44,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:44,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633096957] [2024-06-28 01:46:44,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633096957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:44,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:44,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:44,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147170765] [2024-06-28 01:46:44,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:44,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:44,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:44,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:44,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:44,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:44,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 571 transitions, 12239 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:44,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:44,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:44,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:46,261 INFO L124 PetriNetUnfolderBase]: 3603/7797 cut-off events. [2024-06-28 01:46:46,261 INFO L125 PetriNetUnfolderBase]: For 150135/150135 co-relation queries the response was YES. [2024-06-28 01:46:46,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47514 conditions, 7797 events. 3603/7797 cut-off events. For 150135/150135 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 70763 event pairs, 1715 based on Foata normal form. 2/7105 useless extension candidates. Maximal degree in co-relation 47370. Up to 6336 conditions per place. [2024-06-28 01:46:46,345 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 562 selfloop transitions, 21 changer transitions 0/591 dead transitions. [2024-06-28 01:46:46,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 591 transitions, 13525 flow [2024-06-28 01:46:46,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:46,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 01:46:46,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228395061728395 [2024-06-28 01:46:46,346 INFO L175 Difference]: Start difference. First operand has 313 places, 571 transitions, 12239 flow. Second operand 9 states and 137 transitions. [2024-06-28 01:46:46,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 591 transitions, 13525 flow [2024-06-28 01:46:47,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 591 transitions, 13464 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:47,249 INFO L231 Difference]: Finished difference. Result has 315 places, 572 transitions, 12251 flow [2024-06-28 01:46:47,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12178, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12251, PETRI_PLACES=315, PETRI_TRANSITIONS=572} [2024-06-28 01:46:47,249 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 275 predicate places. [2024-06-28 01:46:47,249 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 572 transitions, 12251 flow [2024-06-28 01:46:47,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:47,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:47,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:47,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:46:47,250 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:47,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:47,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1629250084, now seen corresponding path program 13 times [2024-06-28 01:46:47,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:47,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796388908] [2024-06-28 01:46:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:47,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:47,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:47,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796388908] [2024-06-28 01:46:47,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796388908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:47,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:47,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:47,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520149932] [2024-06-28 01:46:47,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:47,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:47,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:47,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:47,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:48,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:48,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 572 transitions, 12251 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:48,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:48,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:48,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:49,858 INFO L124 PetriNetUnfolderBase]: 3648/7867 cut-off events. [2024-06-28 01:46:49,858 INFO L125 PetriNetUnfolderBase]: For 153906/153906 co-relation queries the response was YES. [2024-06-28 01:46:49,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48083 conditions, 7867 events. 3648/7867 cut-off events. For 153906/153906 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 71251 event pairs, 1701 based on Foata normal form. 2/7160 useless extension candidates. Maximal degree in co-relation 47938. Up to 6316 conditions per place. [2024-06-28 01:46:49,949 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 530 selfloop transitions, 77 changer transitions 0/615 dead transitions. [2024-06-28 01:46:49,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 615 transitions, 14082 flow [2024-06-28 01:46:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:49,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:46:49,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-28 01:46:49,950 INFO L175 Difference]: Start difference. First operand has 315 places, 572 transitions, 12251 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:46:49,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 615 transitions, 14082 flow [2024-06-28 01:46:50,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 615 transitions, 14028 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:50,963 INFO L231 Difference]: Finished difference. Result has 320 places, 586 transitions, 12721 flow [2024-06-28 01:46:50,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12197, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12721, PETRI_PLACES=320, PETRI_TRANSITIONS=586} [2024-06-28 01:46:50,963 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 280 predicate places. [2024-06-28 01:46:50,963 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 586 transitions, 12721 flow [2024-06-28 01:46:50,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:50,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:50,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:50,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:46:50,964 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:50,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:50,964 INFO L85 PathProgramCache]: Analyzing trace with hash -961948927, now seen corresponding path program 18 times [2024-06-28 01:46:50,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:50,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754640903] [2024-06-28 01:46:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:50,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:51,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:51,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754640903] [2024-06-28 01:46:51,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754640903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:51,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:51,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:51,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672402777] [2024-06-28 01:46:51,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:51,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:51,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:51,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:51,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:51,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:51,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 586 transitions, 12721 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:51,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:51,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:51,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:53,587 INFO L124 PetriNetUnfolderBase]: 3708/8026 cut-off events. [2024-06-28 01:46:53,588 INFO L125 PetriNetUnfolderBase]: For 159606/159606 co-relation queries the response was YES. [2024-06-28 01:46:53,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49095 conditions, 8026 events. 3708/8026 cut-off events. For 159606/159606 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 73181 event pairs, 1745 based on Foata normal form. 2/7313 useless extension candidates. Maximal degree in co-relation 48949. Up to 6471 conditions per place. [2024-06-28 01:46:53,679 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 566 selfloop transitions, 38 changer transitions 0/612 dead transitions. [2024-06-28 01:46:53,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 612 transitions, 14229 flow [2024-06-28 01:46:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 01:46:53,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:46:53,680 INFO L175 Difference]: Start difference. First operand has 320 places, 586 transitions, 12721 flow. Second operand 10 states and 150 transitions. [2024-06-28 01:46:53,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 612 transitions, 14229 flow [2024-06-28 01:46:54,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 612 transitions, 14013 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:54,863 INFO L231 Difference]: Finished difference. Result has 322 places, 591 transitions, 12716 flow [2024-06-28 01:46:54,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12505, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12716, PETRI_PLACES=322, PETRI_TRANSITIONS=591} [2024-06-28 01:46:54,864 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 282 predicate places. [2024-06-28 01:46:54,864 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 591 transitions, 12716 flow [2024-06-28 01:46:54,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:54,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:54,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:54,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:46:54,864 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:54,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:54,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1170061630, now seen corresponding path program 14 times [2024-06-28 01:46:54,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:54,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048133712] [2024-06-28 01:46:54,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:54,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:55,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:55,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048133712] [2024-06-28 01:46:55,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048133712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:55,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:55,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:55,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355837932] [2024-06-28 01:46:55,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:55,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:55,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:55,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:55,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:55,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:55,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 591 transitions, 12716 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:55,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:55,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:55,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:57,922 INFO L124 PetriNetUnfolderBase]: 3743/8080 cut-off events. [2024-06-28 01:46:57,922 INFO L125 PetriNetUnfolderBase]: For 162804/162804 co-relation queries the response was YES. [2024-06-28 01:46:57,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49549 conditions, 8080 events. 3743/8080 cut-off events. For 162804/162804 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 73581 event pairs, 1733 based on Foata normal form. 2/7355 useless extension candidates. Maximal degree in co-relation 49403. Up to 6502 conditions per place. [2024-06-28 01:46:58,012 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 554 selfloop transitions, 66 changer transitions 0/628 dead transitions. [2024-06-28 01:46:58,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 628 transitions, 14545 flow [2024-06-28 01:46:58,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 01:46:58,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217171717171717 [2024-06-28 01:46:58,013 INFO L175 Difference]: Start difference. First operand has 322 places, 591 transitions, 12716 flow. Second operand 11 states and 167 transitions. [2024-06-28 01:46:58,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 628 transitions, 14545 flow [2024-06-28 01:46:59,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 628 transitions, 14409 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:59,118 INFO L231 Difference]: Finished difference. Result has 326 places, 601 transitions, 12986 flow [2024-06-28 01:46:59,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12580, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12986, PETRI_PLACES=326, PETRI_TRANSITIONS=601} [2024-06-28 01:46:59,119 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 286 predicate places. [2024-06-28 01:46:59,119 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 601 transitions, 12986 flow [2024-06-28 01:46:59,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:59,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:59,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:59,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:46:59,119 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:59,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:59,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1170061475, now seen corresponding path program 19 times [2024-06-28 01:46:59,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:59,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621871282] [2024-06-28 01:46:59,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:59,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:59,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:59,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621871282] [2024-06-28 01:46:59,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621871282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:59,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:59,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:59,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107472449] [2024-06-28 01:46:59,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:59,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:59,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:59,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:59,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:46:59,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 601 transitions, 12986 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:46:59,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:59,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:46:59,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:02,030 INFO L124 PetriNetUnfolderBase]: 3936/8630 cut-off events. [2024-06-28 01:47:02,030 INFO L125 PetriNetUnfolderBase]: For 185735/185735 co-relation queries the response was YES. [2024-06-28 01:47:02,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50849 conditions, 8630 events. 3936/8630 cut-off events. For 185735/185735 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 80018 event pairs, 1828 based on Foata normal form. 16/7886 useless extension candidates. Maximal degree in co-relation 50703. Up to 6378 conditions per place. [2024-06-28 01:47:02,125 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 564 selfloop transitions, 61 changer transitions 0/633 dead transitions. [2024-06-28 01:47:02,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 633 transitions, 14479 flow [2024-06-28 01:47:02,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:02,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:47:02,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:47:02,126 INFO L175 Difference]: Start difference. First operand has 326 places, 601 transitions, 12986 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:47:02,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 633 transitions, 14479 flow [2024-06-28 01:47:03,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 633 transitions, 14142 flow, removed 105 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:03,137 INFO L231 Difference]: Finished difference. Result has 329 places, 601 transitions, 12835 flow [2024-06-28 01:47:03,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12649, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12835, PETRI_PLACES=329, PETRI_TRANSITIONS=601} [2024-06-28 01:47:03,138 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 289 predicate places. [2024-06-28 01:47:03,138 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 601 transitions, 12835 flow [2024-06-28 01:47:03,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:47:03,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:03,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:03,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:47:03,138 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:03,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:03,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1497333470, now seen corresponding path program 3 times [2024-06-28 01:47:03,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:03,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142004151] [2024-06-28 01:47:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:03,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:03,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:03,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142004151] [2024-06-28 01:47:03,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142004151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:03,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:03,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:03,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269140096] [2024-06-28 01:47:03,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:03,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:03,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:03,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:03,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:03,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:47:03,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 601 transitions, 12835 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:47:03,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:03,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:47:03,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:05,959 INFO L124 PetriNetUnfolderBase]: 3953/8620 cut-off events. [2024-06-28 01:47:05,959 INFO L125 PetriNetUnfolderBase]: For 161634/161634 co-relation queries the response was YES. [2024-06-28 01:47:06,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50744 conditions, 8620 events. 3953/8620 cut-off events. For 161634/161634 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 80015 event pairs, 1895 based on Foata normal form. 2/7854 useless extension candidates. Maximal degree in co-relation 50597. Up to 6969 conditions per place. [2024-06-28 01:47:06,070 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 585 selfloop transitions, 31 changer transitions 0/624 dead transitions. [2024-06-28 01:47:06,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 624 transitions, 14278 flow [2024-06-28 01:47:06,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:47:06,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:47:06,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 01:47:06,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2024-06-28 01:47:06,071 INFO L175 Difference]: Start difference. First operand has 329 places, 601 transitions, 12835 flow. Second operand 9 states and 140 transitions. [2024-06-28 01:47:06,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 624 transitions, 14278 flow [2024-06-28 01:47:07,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 624 transitions, 14106 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:07,214 INFO L231 Difference]: Finished difference. Result has 329 places, 602 transitions, 12757 flow [2024-06-28 01:47:07,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12665, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12757, PETRI_PLACES=329, PETRI_TRANSITIONS=602} [2024-06-28 01:47:07,214 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 289 predicate places. [2024-06-28 01:47:07,214 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 602 transitions, 12757 flow [2024-06-28 01:47:07,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:47:07,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:07,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:07,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:47:07,215 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:07,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:07,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2038934798, now seen corresponding path program 4 times [2024-06-28 01:47:07,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:07,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124884499] [2024-06-28 01:47:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:07,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:07,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:07,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124884499] [2024-06-28 01:47:07,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124884499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:07,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:07,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:07,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249242334] [2024-06-28 01:47:07,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:07,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:07,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:07,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:08,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:47:08,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 602 transitions, 12757 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:47:08,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:08,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:47:08,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:10,055 INFO L124 PetriNetUnfolderBase]: 3954/8622 cut-off events. [2024-06-28 01:47:10,055 INFO L125 PetriNetUnfolderBase]: For 148547/148547 co-relation queries the response was YES. [2024-06-28 01:47:10,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50031 conditions, 8622 events. 3954/8622 cut-off events. For 148547/148547 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 79942 event pairs, 1891 based on Foata normal form. 2/7885 useless extension candidates. Maximal degree in co-relation 49884. Up to 6998 conditions per place. [2024-06-28 01:47:10,157 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 602 selfloop transitions, 15 changer transitions 0/625 dead transitions. [2024-06-28 01:47:10,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 625 transitions, 14125 flow [2024-06-28 01:47:10,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:47:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:47:10,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 01:47:10,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 01:47:10,158 INFO L175 Difference]: Start difference. First operand has 329 places, 602 transitions, 12757 flow. Second operand 9 states and 138 transitions. [2024-06-28 01:47:10,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 625 transitions, 14125 flow [2024-06-28 01:47:11,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 625 transitions, 14033 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:11,237 INFO L231 Difference]: Finished difference. Result has 332 places, 605 transitions, 12748 flow [2024-06-28 01:47:11,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12665, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12748, PETRI_PLACES=332, PETRI_TRANSITIONS=605} [2024-06-28 01:47:11,238 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 292 predicate places. [2024-06-28 01:47:11,238 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 605 transitions, 12748 flow [2024-06-28 01:47:11,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:47:11,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:11,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:11,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:47:11,238 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:11,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:11,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1454475160, now seen corresponding path program 15 times [2024-06-28 01:47:11,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:11,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547823396] [2024-06-28 01:47:11,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:11,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:11,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:11,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547823396] [2024-06-28 01:47:11,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547823396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:11,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:11,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:11,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615130005] [2024-06-28 01:47:11,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:11,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:11,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:11,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:11,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:12,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:47:12,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 605 transitions, 12748 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:47:12,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:12,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:47:12,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:14,045 INFO L124 PetriNetUnfolderBase]: 3950/8618 cut-off events. [2024-06-28 01:47:14,045 INFO L125 PetriNetUnfolderBase]: For 140383/140383 co-relation queries the response was YES. [2024-06-28 01:47:14,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49961 conditions, 8618 events. 3950/8618 cut-off events. For 140383/140383 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 80009 event pairs, 1904 based on Foata normal form. 2/7853 useless extension candidates. Maximal degree in co-relation 49812. Up to 6978 conditions per place. [2024-06-28 01:47:14,146 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 583 selfloop transitions, 32 changer transitions 0/623 dead transitions. [2024-06-28 01:47:14,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 623 transitions, 14069 flow [2024-06-28 01:47:14,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 01:47:14,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 01:47:14,146 INFO L175 Difference]: Start difference. First operand has 332 places, 605 transitions, 12748 flow. Second operand 10 states and 149 transitions. [2024-06-28 01:47:14,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 623 transitions, 14069 flow [2024-06-28 01:47:15,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 623 transitions, 13988 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 01:47:15,218 INFO L231 Difference]: Finished difference. Result has 336 places, 605 transitions, 12742 flow [2024-06-28 01:47:15,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12667, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12742, PETRI_PLACES=336, PETRI_TRANSITIONS=605} [2024-06-28 01:47:15,219 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 296 predicate places. [2024-06-28 01:47:15,219 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 605 transitions, 12742 flow [2024-06-28 01:47:15,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:47:15,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:15,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:15,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:47:15,219 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:15,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:15,220 INFO L85 PathProgramCache]: Analyzing trace with hash -474813517, now seen corresponding path program 1 times [2024-06-28 01:47:15,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:15,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907702369] [2024-06-28 01:47:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:15,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:15,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:15,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907702369] [2024-06-28 01:47:15,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907702369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:15,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:15,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:15,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178166743] [2024-06-28 01:47:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:15,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:15,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:16,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:47:16,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 605 transitions, 12742 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:47:16,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:16,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:47:16,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:18,337 INFO L124 PetriNetUnfolderBase]: 4356/9610 cut-off events. [2024-06-28 01:47:18,338 INFO L125 PetriNetUnfolderBase]: For 176330/176338 co-relation queries the response was YES. [2024-06-28 01:47:18,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53740 conditions, 9610 events. 4356/9610 cut-off events. For 176330/176338 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 92111 event pairs, 1683 based on Foata normal form. 16/8821 useless extension candidates. Maximal degree in co-relation 53590. Up to 3704 conditions per place. [2024-06-28 01:47:18,450 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 407 selfloop transitions, 245 changer transitions 0/660 dead transitions. [2024-06-28 01:47:18,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 660 transitions, 14469 flow [2024-06-28 01:47:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:18,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:18,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:47:18,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126262626262627 [2024-06-28 01:47:18,451 INFO L175 Difference]: Start difference. First operand has 336 places, 605 transitions, 12742 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:47:18,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 660 transitions, 14469 flow [2024-06-28 01:47:19,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 660 transitions, 13943 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-06-28 01:47:19,713 INFO L231 Difference]: Finished difference. Result has 336 places, 605 transitions, 12719 flow [2024-06-28 01:47:19,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12224, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12719, PETRI_PLACES=336, PETRI_TRANSITIONS=605} [2024-06-28 01:47:19,714 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 296 predicate places. [2024-06-28 01:47:19,714 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 605 transitions, 12719 flow [2024-06-28 01:47:19,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:47:19,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:19,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:19,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:47:19,714 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:19,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:19,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1235044349, now seen corresponding path program 2 times [2024-06-28 01:47:19,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:19,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849496769] [2024-06-28 01:47:19,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:19,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:20,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:20,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849496769] [2024-06-28 01:47:20,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849496769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:20,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:20,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:20,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267403163] [2024-06-28 01:47:20,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:20,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:20,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:20,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:20,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:20,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:47:20,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 605 transitions, 12719 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:47:20,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:20,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:47:20,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:23,180 INFO L124 PetriNetUnfolderBase]: 4494/9898 cut-off events. [2024-06-28 01:47:23,180 INFO L125 PetriNetUnfolderBase]: For 201933/201946 co-relation queries the response was YES. [2024-06-28 01:47:23,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54774 conditions, 9898 events. 4494/9898 cut-off events. For 201933/201946 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 95479 event pairs, 1878 based on Foata normal form. 21/9073 useless extension candidates. Maximal degree in co-relation 54625. Up to 6857 conditions per place. [2024-06-28 01:47:23,268 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 388 selfloop transitions, 257 changer transitions 0/653 dead transitions. [2024-06-28 01:47:23,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 653 transitions, 14378 flow [2024-06-28 01:47:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:47:23,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:47:23,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 226 transitions. [2024-06-28 01:47:23,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4829059829059829 [2024-06-28 01:47:23,269 INFO L175 Difference]: Start difference. First operand has 336 places, 605 transitions, 12719 flow. Second operand 13 states and 226 transitions. [2024-06-28 01:47:23,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 653 transitions, 14378 flow [2024-06-28 01:47:24,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 653 transitions, 13891 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:24,636 INFO L231 Difference]: Finished difference. Result has 340 places, 605 transitions, 12750 flow [2024-06-28 01:47:24,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12232, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12750, PETRI_PLACES=340, PETRI_TRANSITIONS=605} [2024-06-28 01:47:24,636 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 300 predicate places. [2024-06-28 01:47:24,636 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 605 transitions, 12750 flow [2024-06-28 01:47:24,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:47:24,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:24,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:24,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:47:24,637 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:24,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:24,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1235039699, now seen corresponding path program 3 times [2024-06-28 01:47:24,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:24,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488761579] [2024-06-28 01:47:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:24,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:25,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:25,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488761579] [2024-06-28 01:47:25,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488761579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:25,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:25,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:25,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087866740] [2024-06-28 01:47:25,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:25,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:25,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:25,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:25,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:25,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:47:25,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 605 transitions, 12750 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:47:25,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:25,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:47:25,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:27,714 INFO L124 PetriNetUnfolderBase]: 4129/8970 cut-off events. [2024-06-28 01:47:27,714 INFO L125 PetriNetUnfolderBase]: For 164503/164516 co-relation queries the response was YES. [2024-06-28 01:47:27,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50612 conditions, 8970 events. 4129/8970 cut-off events. For 164503/164516 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 83707 event pairs, 1655 based on Foata normal form. 23/8211 useless extension candidates. Maximal degree in co-relation 50462. Up to 6493 conditions per place. [2024-06-28 01:47:27,806 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 376 selfloop transitions, 263 changer transitions 0/647 dead transitions. [2024-06-28 01:47:27,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 647 transitions, 14230 flow [2024-06-28 01:47:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:47:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:47:27,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 233 transitions. [2024-06-28 01:47:27,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623015873015873 [2024-06-28 01:47:27,807 INFO L175 Difference]: Start difference. First operand has 340 places, 605 transitions, 12750 flow. Second operand 14 states and 233 transitions. [2024-06-28 01:47:27,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 647 transitions, 14230 flow [2024-06-28 01:47:28,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 647 transitions, 13718 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 01:47:28,862 INFO L231 Difference]: Finished difference. Result has 343 places, 606 transitions, 12792 flow [2024-06-28 01:47:28,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12238, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12792, PETRI_PLACES=343, PETRI_TRANSITIONS=606} [2024-06-28 01:47:28,862 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 303 predicate places. [2024-06-28 01:47:28,862 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 606 transitions, 12792 flow [2024-06-28 01:47:28,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:47:28,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:28,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:28,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:47:28,863 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:28,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:28,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1235159669, now seen corresponding path program 4 times [2024-06-28 01:47:28,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:28,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023432110] [2024-06-28 01:47:28,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:28,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:29,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:29,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023432110] [2024-06-28 01:47:29,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023432110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:29,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:29,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:29,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701129706] [2024-06-28 01:47:29,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:29,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:29,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:29,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:29,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:29,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:47:29,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 606 transitions, 12792 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:47:29,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:29,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:47:29,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:32,020 INFO L124 PetriNetUnfolderBase]: 4183/9107 cut-off events. [2024-06-28 01:47:32,020 INFO L125 PetriNetUnfolderBase]: For 164044/164057 co-relation queries the response was YES. [2024-06-28 01:47:32,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51324 conditions, 9107 events. 4183/9107 cut-off events. For 164044/164057 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 85185 event pairs, 1638 based on Foata normal form. 21/8344 useless extension candidates. Maximal degree in co-relation 51173. Up to 6037 conditions per place. [2024-06-28 01:47:32,120 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 393 selfloop transitions, 254 changer transitions 0/655 dead transitions. [2024-06-28 01:47:32,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 655 transitions, 14335 flow [2024-06-28 01:47:32,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:47:32,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:47:32,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 217 transitions. [2024-06-28 01:47:32,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-06-28 01:47:32,121 INFO L175 Difference]: Start difference. First operand has 343 places, 606 transitions, 12792 flow. Second operand 12 states and 217 transitions. [2024-06-28 01:47:32,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 655 transitions, 14335 flow [2024-06-28 01:47:33,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 655 transitions, 13842 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 01:47:33,310 INFO L231 Difference]: Finished difference. Result has 344 places, 606 transitions, 12811 flow [2024-06-28 01:47:33,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12299, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12811, PETRI_PLACES=344, PETRI_TRANSITIONS=606} [2024-06-28 01:47:33,311 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 304 predicate places. [2024-06-28 01:47:33,311 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 606 transitions, 12811 flow [2024-06-28 01:47:33,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:47:33,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:33,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:33,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:47:33,311 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:33,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:33,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1045335891, now seen corresponding path program 5 times [2024-06-28 01:47:33,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:33,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91198595] [2024-06-28 01:47:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:33,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:33,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:33,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91198595] [2024-06-28 01:47:33,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91198595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:33,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:33,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:47:33,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004806163] [2024-06-28 01:47:33,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:33,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:47:33,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:33,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:47:33,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:47:33,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:47:33,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 606 transitions, 12811 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:33,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:33,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:47:33,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:36,652 INFO L124 PetriNetUnfolderBase]: 4967/11219 cut-off events. [2024-06-28 01:47:36,652 INFO L125 PetriNetUnfolderBase]: For 189822/189822 co-relation queries the response was YES. [2024-06-28 01:47:36,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58342 conditions, 11219 events. 4967/11219 cut-off events. For 189822/189822 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 112266 event pairs, 1700 based on Foata normal form. 8/10356 useless extension candidates. Maximal degree in co-relation 58190. Up to 5491 conditions per place. [2024-06-28 01:47:36,780 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 384 selfloop transitions, 272 changer transitions 0/664 dead transitions. [2024-06-28 01:47:36,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 664 transitions, 14573 flow [2024-06-28 01:47:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:36,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 01:47:36,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-28 01:47:36,781 INFO L175 Difference]: Start difference. First operand has 344 places, 606 transitions, 12811 flow. Second operand 10 states and 188 transitions. [2024-06-28 01:47:36,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 664 transitions, 14573 flow [2024-06-28 01:47:38,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 664 transitions, 14158 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:38,097 INFO L231 Difference]: Finished difference. Result has 346 places, 607 transitions, 13209 flow [2024-06-28 01:47:38,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12398, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13209, PETRI_PLACES=346, PETRI_TRANSITIONS=607} [2024-06-28 01:47:38,098 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 306 predicate places. [2024-06-28 01:47:38,098 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 607 transitions, 13209 flow [2024-06-28 01:47:38,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:38,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:38,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:38,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:47:38,098 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:38,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1600248919, now seen corresponding path program 6 times [2024-06-28 01:47:38,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:38,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831105780] [2024-06-28 01:47:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:38,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:38,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:38,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831105780] [2024-06-28 01:47:38,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831105780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:38,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:38,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:47:38,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645002826] [2024-06-28 01:47:38,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:38,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:47:38,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:47:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:47:38,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:47:38,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 607 transitions, 13209 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:38,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:38,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:47:38,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:41,735 INFO L124 PetriNetUnfolderBase]: 5490/12265 cut-off events. [2024-06-28 01:47:41,736 INFO L125 PetriNetUnfolderBase]: For 232894/232894 co-relation queries the response was YES. [2024-06-28 01:47:41,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63689 conditions, 12265 events. 5490/12265 cut-off events. For 232894/232894 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 125338 event pairs, 2570 based on Foata normal form. 8/11335 useless extension candidates. Maximal degree in co-relation 63535. Up to 5305 conditions per place. [2024-06-28 01:47:41,896 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 364 selfloop transitions, 287 changer transitions 0/659 dead transitions. [2024-06-28 01:47:41,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 659 transitions, 14946 flow [2024-06-28 01:47:41,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:41,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 01:47:41,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 01:47:41,897 INFO L175 Difference]: Start difference. First operand has 346 places, 607 transitions, 13209 flow. Second operand 10 states and 189 transitions. [2024-06-28 01:47:41,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 659 transitions, 14946 flow [2024-06-28 01:47:43,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 659 transitions, 14546 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:43,616 INFO L231 Difference]: Finished difference. Result has 348 places, 607 transitions, 13405 flow [2024-06-28 01:47:43,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12823, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13405, PETRI_PLACES=348, PETRI_TRANSITIONS=607} [2024-06-28 01:47:43,617 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 308 predicate places. [2024-06-28 01:47:43,617 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 607 transitions, 13405 flow [2024-06-28 01:47:43,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:43,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:43,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:43,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:47:43,617 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:43,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:43,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1157856091, now seen corresponding path program 7 times [2024-06-28 01:47:43,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:43,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916928208] [2024-06-28 01:47:43,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:43,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:44,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:44,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916928208] [2024-06-28 01:47:44,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916928208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:44,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:44,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:47:44,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580099856] [2024-06-28 01:47:44,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:44,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:47:44,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:44,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:47:44,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:47:44,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:47:44,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 607 transitions, 13405 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:44,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:44,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:47:44,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:47,405 INFO L124 PetriNetUnfolderBase]: 5670/12884 cut-off events. [2024-06-28 01:47:47,405 INFO L125 PetriNetUnfolderBase]: For 260807/260807 co-relation queries the response was YES. [2024-06-28 01:47:47,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66571 conditions, 12884 events. 5670/12884 cut-off events. For 260807/260807 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 133952 event pairs, 2762 based on Foata normal form. 8/11892 useless extension candidates. Maximal degree in co-relation 66416. Up to 7716 conditions per place. [2024-06-28 01:47:47,580 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 349 selfloop transitions, 293 changer transitions 0/650 dead transitions. [2024-06-28 01:47:47,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 650 transitions, 15054 flow [2024-06-28 01:47:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 01:47:47,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 01:47:47,581 INFO L175 Difference]: Start difference. First operand has 348 places, 607 transitions, 13405 flow. Second operand 10 states and 189 transitions. [2024-06-28 01:47:47,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 650 transitions, 15054 flow [2024-06-28 01:47:49,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 650 transitions, 14448 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 01:47:49,918 INFO L231 Difference]: Finished difference. Result has 348 places, 607 transitions, 13393 flow [2024-06-28 01:47:49,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12801, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13393, PETRI_PLACES=348, PETRI_TRANSITIONS=607} [2024-06-28 01:47:49,918 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 308 predicate places. [2024-06-28 01:47:49,918 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 607 transitions, 13393 flow [2024-06-28 01:47:49,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:49,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:49,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:49,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:47:49,919 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:49,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:49,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1603050079, now seen corresponding path program 8 times [2024-06-28 01:47:49,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:49,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082976019] [2024-06-28 01:47:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:49,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:50,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:50,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:50,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082976019] [2024-06-28 01:47:50,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082976019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:50,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:50,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:47:50,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117720409] [2024-06-28 01:47:50,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:50,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:47:50,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:50,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:47:50,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:47:50,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:47:50,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 607 transitions, 13393 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:50,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:50,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:47:50,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:54,095 INFO L124 PetriNetUnfolderBase]: 5348/11987 cut-off events. [2024-06-28 01:47:54,095 INFO L125 PetriNetUnfolderBase]: For 233898/233898 co-relation queries the response was YES. [2024-06-28 01:47:54,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63002 conditions, 11987 events. 5348/11987 cut-off events. For 233898/233898 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 121968 event pairs, 2735 based on Foata normal form. 10/11062 useless extension candidates. Maximal degree in co-relation 62847. Up to 8206 conditions per place. [2024-06-28 01:47:54,223 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 327 selfloop transitions, 302 changer transitions 0/637 dead transitions. [2024-06-28 01:47:54,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 637 transitions, 14791 flow [2024-06-28 01:47:54,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:54,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:54,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:47:54,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055555555555555 [2024-06-28 01:47:54,224 INFO L175 Difference]: Start difference. First operand has 348 places, 607 transitions, 13393 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:47:54,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 637 transitions, 14791 flow [2024-06-28 01:47:56,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 637 transitions, 14205 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:56,042 INFO L231 Difference]: Finished difference. Result has 349 places, 607 transitions, 13429 flow [2024-06-28 01:47:56,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12807, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13429, PETRI_PLACES=349, PETRI_TRANSITIONS=607} [2024-06-28 01:47:56,043 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 309 predicate places. [2024-06-28 01:47:56,043 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 607 transitions, 13429 flow [2024-06-28 01:47:56,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:56,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:56,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:56,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:47:56,044 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:56,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:56,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1603045429, now seen corresponding path program 9 times [2024-06-28 01:47:56,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:56,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159151467] [2024-06-28 01:47:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:56,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:56,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:56,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159151467] [2024-06-28 01:47:56,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159151467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:56,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:56,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:56,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359312157] [2024-06-28 01:47:56,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:56,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:56,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:56,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:47:56,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 607 transitions, 13429 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:47:56,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:56,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:47:56,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:00,444 INFO L124 PetriNetUnfolderBase]: 5509/12322 cut-off events. [2024-06-28 01:48:00,445 INFO L125 PetriNetUnfolderBase]: For 215923/215931 co-relation queries the response was YES. [2024-06-28 01:48:00,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64975 conditions, 12322 events. 5509/12322 cut-off events. For 215923/215931 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 125813 event pairs, 2692 based on Foata normal form. 16/11388 useless extension candidates. Maximal degree in co-relation 64820. Up to 8382 conditions per place. [2024-06-28 01:48:00,573 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 315 selfloop transitions, 375 changer transitions 0/698 dead transitions. [2024-06-28 01:48:00,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 698 transitions, 16323 flow [2024-06-28 01:48:00,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:00,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 01:48:00,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-06-28 01:48:00,574 INFO L175 Difference]: Start difference. First operand has 349 places, 607 transitions, 13429 flow. Second operand 11 states and 196 transitions. [2024-06-28 01:48:00,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 698 transitions, 16323 flow [2024-06-28 01:48:02,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 698 transitions, 15633 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:02,306 INFO L231 Difference]: Finished difference. Result has 355 places, 646 transitions, 14914 flow [2024-06-28 01:48:02,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12825, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14914, PETRI_PLACES=355, PETRI_TRANSITIONS=646} [2024-06-28 01:48:02,306 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 315 predicate places. [2024-06-28 01:48:02,306 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 646 transitions, 14914 flow [2024-06-28 01:48:02,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:48:02,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:02,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:02,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:48:02,307 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:02,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1032317821, now seen corresponding path program 10 times [2024-06-28 01:48:02,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:02,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805456593] [2024-06-28 01:48:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:03,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:03,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805456593] [2024-06-28 01:48:03,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805456593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:03,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:03,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:48:03,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906283402] [2024-06-28 01:48:03,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:03,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:48:03,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:03,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:48:03,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:48:03,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:48:03,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 646 transitions, 14914 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:48:03,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:03,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:48:03,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:06,809 INFO L124 PetriNetUnfolderBase]: 5833/13052 cut-off events. [2024-06-28 01:48:06,809 INFO L125 PetriNetUnfolderBase]: For 248394/248395 co-relation queries the response was YES. [2024-06-28 01:48:07,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69260 conditions, 13052 events. 5833/13052 cut-off events. For 248394/248395 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 135048 event pairs, 3013 based on Foata normal form. 9/12059 useless extension candidates. Maximal degree in co-relation 69100. Up to 7843 conditions per place. [2024-06-28 01:48:07,082 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 477 selfloop transitions, 214 changer transitions 0/699 dead transitions. [2024-06-28 01:48:07,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 699 transitions, 16756 flow [2024-06-28 01:48:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 01:48:07,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-28 01:48:07,083 INFO L175 Difference]: Start difference. First operand has 355 places, 646 transitions, 14914 flow. Second operand 11 states and 204 transitions. [2024-06-28 01:48:07,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 699 transitions, 16756 flow [2024-06-28 01:48:08,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 699 transitions, 16258 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:48:08,775 INFO L231 Difference]: Finished difference. Result has 360 places, 646 transitions, 14851 flow [2024-06-28 01:48:08,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=14418, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14851, PETRI_PLACES=360, PETRI_TRANSITIONS=646} [2024-06-28 01:48:08,775 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 320 predicate places. [2024-06-28 01:48:08,775 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 646 transitions, 14851 flow [2024-06-28 01:48:08,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:48:08,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:08,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:08,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:48:08,776 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:08,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:08,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1032437791, now seen corresponding path program 11 times [2024-06-28 01:48:08,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:08,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071386994] [2024-06-28 01:48:08,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:08,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:09,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:09,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071386994] [2024-06-28 01:48:09,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071386994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:09,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:09,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:48:09,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895214189] [2024-06-28 01:48:09,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:09,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:48:09,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:09,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:48:09,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:48:09,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:48:09,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 646 transitions, 14851 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:48:09,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:09,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:48:09,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:13,473 INFO L124 PetriNetUnfolderBase]: 5946/13335 cut-off events. [2024-06-28 01:48:13,473 INFO L125 PetriNetUnfolderBase]: For 259437/259438 co-relation queries the response was YES. [2024-06-28 01:48:13,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69632 conditions, 13335 events. 5946/13335 cut-off events. For 259437/259438 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 138633 event pairs, 3243 based on Foata normal form. 11/12289 useless extension candidates. Maximal degree in co-relation 69472. Up to 10134 conditions per place. [2024-06-28 01:48:13,599 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 451 selfloop transitions, 225 changer transitions 0/684 dead transitions. [2024-06-28 01:48:13,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 684 transitions, 16422 flow [2024-06-28 01:48:13,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:13,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:13,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-28 01:48:13,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48737373737373735 [2024-06-28 01:48:13,600 INFO L175 Difference]: Start difference. First operand has 360 places, 646 transitions, 14851 flow. Second operand 11 states and 193 transitions. [2024-06-28 01:48:13,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 684 transitions, 16422 flow [2024-06-28 01:48:15,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 684 transitions, 16151 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:48:15,768 INFO L231 Difference]: Finished difference. Result has 363 places, 646 transitions, 15036 flow [2024-06-28 01:48:15,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=14580, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15036, PETRI_PLACES=363, PETRI_TRANSITIONS=646} [2024-06-28 01:48:15,769 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 323 predicate places. [2024-06-28 01:48:15,769 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 646 transitions, 15036 flow [2024-06-28 01:48:15,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:48:15,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:15,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:15,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:48:15,770 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:15,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:15,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1032433141, now seen corresponding path program 12 times [2024-06-28 01:48:15,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:15,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175179389] [2024-06-28 01:48:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:15,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175179389] [2024-06-28 01:48:16,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175179389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:16,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:16,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:48:16,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150264340] [2024-06-28 01:48:16,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:16,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:48:16,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:16,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:48:16,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:48:16,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:48:16,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 646 transitions, 15036 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:48:16,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:16,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:48:16,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:20,574 INFO L124 PetriNetUnfolderBase]: 5920/13374 cut-off events. [2024-06-28 01:48:20,574 INFO L125 PetriNetUnfolderBase]: For 260346/260347 co-relation queries the response was YES. [2024-06-28 01:48:20,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69621 conditions, 13374 events. 5920/13374 cut-off events. For 260346/260347 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 139221 event pairs, 3148 based on Foata normal form. 9/12335 useless extension candidates. Maximal degree in co-relation 69460. Up to 9108 conditions per place. [2024-06-28 01:48:20,706 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 475 selfloop transitions, 214 changer transitions 0/697 dead transitions. [2024-06-28 01:48:20,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 697 transitions, 16858 flow [2024-06-28 01:48:20,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:48:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:48:20,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 215 transitions. [2024-06-28 01:48:20,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-28 01:48:20,707 INFO L175 Difference]: Start difference. First operand has 363 places, 646 transitions, 15036 flow. Second operand 12 states and 215 transitions. [2024-06-28 01:48:20,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 697 transitions, 16858 flow [2024-06-28 01:48:22,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 697 transitions, 16412 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:23,009 INFO L231 Difference]: Finished difference. Result has 366 places, 646 transitions, 15026 flow [2024-06-28 01:48:23,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=14590, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15026, PETRI_PLACES=366, PETRI_TRANSITIONS=646} [2024-06-28 01:48:23,009 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 326 predicate places. [2024-06-28 01:48:23,009 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 646 transitions, 15026 flow [2024-06-28 01:48:23,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:48:23,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:23,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:23,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:48:23,010 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:23,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:23,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1036906441, now seen corresponding path program 13 times [2024-06-28 01:48:23,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:23,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691019818] [2024-06-28 01:48:23,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:23,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:23,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:23,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691019818] [2024-06-28 01:48:23,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691019818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:23,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:23,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:48:23,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84845790] [2024-06-28 01:48:23,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:23,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:48:23,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:23,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:48:23,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:48:23,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:48:23,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 646 transitions, 15026 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:48:23,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:23,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:48:23,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:27,659 INFO L124 PetriNetUnfolderBase]: 5907/13260 cut-off events. [2024-06-28 01:48:27,659 INFO L125 PetriNetUnfolderBase]: For 243683/243684 co-relation queries the response was YES. [2024-06-28 01:48:27,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68804 conditions, 13260 events. 5907/13260 cut-off events. For 243683/243684 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 137802 event pairs, 3229 based on Foata normal form. 11/12214 useless extension candidates. Maximal degree in co-relation 68642. Up to 10161 conditions per place. [2024-06-28 01:48:27,807 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 499 selfloop transitions, 177 changer transitions 0/684 dead transitions. [2024-06-28 01:48:27,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 684 transitions, 16597 flow [2024-06-28 01:48:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 01:48:27,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-28 01:48:27,808 INFO L175 Difference]: Start difference. First operand has 366 places, 646 transitions, 15026 flow. Second operand 11 states and 192 transitions. [2024-06-28 01:48:27,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 684 transitions, 16597 flow [2024-06-28 01:48:29,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 684 transitions, 16150 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:48:29,935 INFO L231 Difference]: Finished difference. Result has 367 places, 646 transitions, 14941 flow [2024-06-28 01:48:29,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=14579, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14941, PETRI_PLACES=367, PETRI_TRANSITIONS=646} [2024-06-28 01:48:29,936 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 327 predicate places. [2024-06-28 01:48:29,936 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 646 transitions, 14941 flow [2024-06-28 01:48:29,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-06-28 01:48:29,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:29,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:29,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:48:29,936 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:29,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:29,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1203140221, now seen corresponding path program 14 times [2024-06-28 01:48:29,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:29,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133199482] [2024-06-28 01:48:29,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:29,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:30,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:30,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133199482] [2024-06-28 01:48:30,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133199482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:30,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:30,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15335050] [2024-06-28 01:48:30,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:30,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:30,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:30,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:30,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:30,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:48:30,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 646 transitions, 14941 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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) [2024-06-28 01:48:30,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:30,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:48:30,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:34,758 INFO L124 PetriNetUnfolderBase]: 6058/13712 cut-off events. [2024-06-28 01:48:34,758 INFO L125 PetriNetUnfolderBase]: For 250461/250468 co-relation queries the response was YES. [2024-06-28 01:48:34,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70046 conditions, 13712 events. 6058/13712 cut-off events. For 250461/250468 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 143859 event pairs, 3378 based on Foata normal form. 17/12641 useless extension candidates. Maximal degree in co-relation 69883. Up to 10456 conditions per place. [2024-06-28 01:48:34,919 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 525 selfloop transitions, 154 changer transitions 0/687 dead transitions. [2024-06-28 01:48:34,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 687 transitions, 16524 flow [2024-06-28 01:48:34,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:48:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:48:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-06-28 01:48:34,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636752136752137 [2024-06-28 01:48:34,920 INFO L175 Difference]: Start difference. First operand has 367 places, 646 transitions, 14941 flow. Second operand 13 states and 217 transitions. [2024-06-28 01:48:34,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 687 transitions, 16524 flow