./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.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/mix010.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix010.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:21:50,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:21:50,140 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:21:50,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:21:50,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:21:50,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:21:50,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:21:50,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:21:50,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:21:50,181 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:21:50,181 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:21:50,182 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:21:50,182 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:21:50,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:21:50,184 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:21:50,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:21:50,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:21:50,184 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:21:50,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:21:50,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:21:50,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:21:50,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:21:50,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:21:50,188 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:21:50,188 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:21:50,189 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:21:50,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:21:50,189 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:21:50,189 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:21:50,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:21:50,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:21:50,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:21:50,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:21:50,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:21:50,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:21:50,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:21:50,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:21:50,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:21:50,192 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:21:50,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:21:50,192 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:21:50,192 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:21:50,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:21:50,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:21:50,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:21:50,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:21:50,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:21:50,432 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:21:50,433 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:21:50,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2024-06-28 01:21:51,559 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:21:51,755 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:21:51,756 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2024-06-28 01:21:51,772 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed02889ac/728449681f4d47f59077e8872e0b0883/FLAGd5c06515a [2024-06-28 01:21:51,782 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed02889ac/728449681f4d47f59077e8872e0b0883 [2024-06-28 01:21:51,784 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:21:51,792 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:21:51,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix010.oepc.yml/witness.yml [2024-06-28 01:21:51,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:21:51,955 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:21:51,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:21:51,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:21:51,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:21:51,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:21:51" (1/2) ... [2024-06-28 01:21:51,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1182251a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:51, skipping insertion in model container [2024-06-28 01:21:51,962 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:21:51" (1/2) ... [2024-06-28 01:21:51,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4db963ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:51, skipping insertion in model container [2024-06-28 01:21:51,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:21:51" (2/2) ... [2024-06-28 01:21:51,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1182251a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:51, skipping insertion in model container [2024-06-28 01:21:51,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:21:51" (2/2) ... [2024-06-28 01:21:51,966 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:21:52,047 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:21:52,048 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((! multithreaded || a$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) [2024-06-28 01:21:52,048 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((! multithreaded || a$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) [2024-06-28 01:21:52,049 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || a$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) [2024-06-28 01:21:52,049 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:21:52,049 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-28 01:21:52,090 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:21:52,245 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/mix010.oepc.i[945,958] [2024-06-28 01:21:52,463 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:21:52,475 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:21:52,505 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/mix010.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:21:52,600 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:21:52,630 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:21:52,631 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52 WrapperNode [2024-06-28 01:21:52,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:21:52,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:21:52,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:21:52,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:21:52,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52" (1/1) ... [2024-06-28 01:21:52,666 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52" (1/1) ... [2024-06-28 01:21:52,694 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 125 [2024-06-28 01:21:52,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:21:52,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:21:52,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:21:52,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:21:52,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52" (1/1) ... [2024-06-28 01:21:52,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52" (1/1) ... [2024-06-28 01:21:52,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52" (1/1) ... [2024-06-28 01:21:52,738 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 01:21:52,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52" (1/1) ... [2024-06-28 01:21:52,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52" (1/1) ... [2024-06-28 01:21:52,745 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52" (1/1) ... [2024-06-28 01:21:52,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52" (1/1) ... [2024-06-28 01:21:52,755 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52" (1/1) ... [2024-06-28 01:21:52,757 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52" (1/1) ... [2024-06-28 01:21:52,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:21:52,766 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:21:52,766 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:21:52,766 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:21:52,767 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52" (1/1) ... [2024-06-28 01:21:52,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:21:52,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:21:52,802 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 01:21:52,828 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 01:21:52,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:21:52,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:21:52,844 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:21:52,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:21:52,845 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:21:52,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:21:52,845 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:21:52,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:21:52,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:21:52,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:21:52,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:21:52,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:21:52,848 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 01:21:52,945 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:21:52,947 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:21:53,308 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:21:53,309 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:21:53,476 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:21:53,476 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:21:53,477 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:21:53 BoogieIcfgContainer [2024-06-28 01:21:53,477 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:21:53,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:21:53,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:21:53,482 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:21:53,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:21:51" (1/4) ... [2024-06-28 01:21:53,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c35ee1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:21:53, skipping insertion in model container [2024-06-28 01:21:53,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:21:51" (2/4) ... [2024-06-28 01:21:53,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c35ee1e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:21:53, skipping insertion in model container [2024-06-28 01:21:53,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:52" (3/4) ... [2024-06-28 01:21:53,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c35ee1e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:21:53, skipping insertion in model container [2024-06-28 01:21:53,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:21:53" (4/4) ... [2024-06-28 01:21:53,485 INFO L112 eAbstractionObserver]: Analyzing ICFG mix010.oepc.i [2024-06-28 01:21:53,499 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:21:53,499 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:21:53,499 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:21:53,539 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:21:53,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-06-28 01:21:53,598 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-28 01:21:53,599 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:21:53,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-28 01:21:53,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-06-28 01:21:53,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-06-28 01:21:53,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:21:53,630 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;@25b9dd39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:21:53,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:21:53,634 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:21:53,635 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:21:53,635 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:21:53,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:53,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:21:53,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:53,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:53,643 INFO L85 PathProgramCache]: Analyzing trace with hash 348754714, now seen corresponding path program 1 times [2024-06-28 01:21:53,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:53,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098985674] [2024-06-28 01:21:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:53,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:54,712 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 01:21:54,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:54,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098985674] [2024-06-28 01:21:54,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098985674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:54,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:54,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:21:54,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289621278] [2024-06-28 01:21:54,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:54,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:21:54,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:54,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:21:54,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:21:54,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-28 01:21:54,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 01:21:54,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:54,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-28 01:21:54,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:55,545 INFO L124 PetriNetUnfolderBase]: 3816/6343 cut-off events. [2024-06-28 01:21:55,545 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 01:21:55,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11928 conditions, 6343 events. 3816/6343 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 42081 event pairs, 2900 based on Foata normal form. 181/5953 useless extension candidates. Maximal degree in co-relation 11916. Up to 5482 conditions per place. [2024-06-28 01:21:55,587 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 41 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-28 01:21:55,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 227 flow [2024-06-28 01:21:55,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:21:55,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:21:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-28 01:21:55,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6938775510204082 [2024-06-28 01:21:55,598 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 102 transitions. [2024-06-28 01:21:55,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 227 flow [2024-06-28 01:21:55,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:21:55,603 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 133 flow [2024-06-28 01:21:55,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-28 01:21:55,607 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-28 01:21:55,607 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 133 flow [2024-06-28 01:21:55,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 01:21:55,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:55,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:21:55,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:21:55,608 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:55,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:55,609 INFO L85 PathProgramCache]: Analyzing trace with hash 348755474, now seen corresponding path program 1 times [2024-06-28 01:21:55,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:55,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838310898] [2024-06-28 01:21:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:55,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:55,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:55,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838310898] [2024-06-28 01:21:55,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838310898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:55,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:55,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:21:55,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756458162] [2024-06-28 01:21:55,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:55,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:21:55,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:55,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:21:55,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:21:55,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2024-06-28 01:21:55,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 01:21:55,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:55,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2024-06-28 01:21:55,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:55,971 INFO L124 PetriNetUnfolderBase]: 978/1990 cut-off events. [2024-06-28 01:21:55,972 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-28 01:21:55,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3736 conditions, 1990 events. 978/1990 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13930 event pairs, 610 based on Foata normal form. 0/1837 useless extension candidates. Maximal degree in co-relation 3724. Up to 1259 conditions per place. [2024-06-28 01:21:55,981 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 35 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-06-28 01:21:55,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 236 flow [2024-06-28 01:21:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:21:55,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:21:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-28 01:21:55,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2024-06-28 01:21:55,985 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 133 flow. Second operand 3 states and 116 transitions. [2024-06-28 01:21:55,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 236 flow [2024-06-28 01:21:55,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:21:55,989 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 126 flow [2024-06-28 01:21:55,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-28 01:21:55,991 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-28 01:21:55,991 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 126 flow [2024-06-28 01:21:55,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 01:21:55,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:55,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:55,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:21:55,994 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:55,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:55,998 INFO L85 PathProgramCache]: Analyzing trace with hash 145856984, now seen corresponding path program 1 times [2024-06-28 01:21:55,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:55,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058013013] [2024-06-28 01:21:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:55,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:56,902 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 01:21:56,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:56,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058013013] [2024-06-28 01:21:56,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058013013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:56,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:56,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:21:56,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525615514] [2024-06-28 01:21:56,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:56,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:21:56,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:56,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:21:56,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:21:56,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-28 01:21:56,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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 01:21:56,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:56,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-28 01:21:56,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:57,421 INFO L124 PetriNetUnfolderBase]: 3137/5256 cut-off events. [2024-06-28 01:21:57,421 INFO L125 PetriNetUnfolderBase]: For 1299/1299 co-relation queries the response was YES. [2024-06-28 01:21:57,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11072 conditions, 5256 events. 3137/5256 cut-off events. For 1299/1299 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 33839 event pairs, 1916 based on Foata normal form. 3/5049 useless extension candidates. Maximal degree in co-relation 11059. Up to 4506 conditions per place. [2024-06-28 01:21:57,508 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 49 selfloop transitions, 8 changer transitions 2/73 dead transitions. [2024-06-28 01:21:57,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 316 flow [2024-06-28 01:21:57,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:21:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:21:57,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-28 01:21:57,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6479591836734694 [2024-06-28 01:21:57,512 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 126 flow. Second operand 4 states and 127 transitions. [2024-06-28 01:21:57,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 316 flow [2024-06-28 01:21:57,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:21:57,516 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 187 flow [2024-06-28 01:21:57,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-28 01:21:57,517 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-06-28 01:21:57,517 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 187 flow [2024-06-28 01:21:57,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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 01:21:57,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:57,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:57,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:21:57,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:57,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:57,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1565330281, now seen corresponding path program 1 times [2024-06-28 01:21:57,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:57,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541967137] [2024-06-28 01:21:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:57,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:59,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:59,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541967137] [2024-06-28 01:21:59,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541967137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:59,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:59,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:21:59,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495910247] [2024-06-28 01:21:59,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:59,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:21:59,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:59,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:21:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:21:59,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-28 01:21:59,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 01:21:59,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:59,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-28 01:21:59,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:59,917 INFO L124 PetriNetUnfolderBase]: 3276/5570 cut-off events. [2024-06-28 01:21:59,917 INFO L125 PetriNetUnfolderBase]: For 2376/2376 co-relation queries the response was YES. [2024-06-28 01:21:59,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12570 conditions, 5570 events. 3276/5570 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 36467 event pairs, 1853 based on Foata normal form. 3/5368 useless extension candidates. Maximal degree in co-relation 12555. Up to 4665 conditions per place. [2024-06-28 01:21:59,944 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 70 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-28 01:21:59,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 97 transitions, 483 flow [2024-06-28 01:21:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:21:59,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:21:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-28 01:21:59,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-06-28 01:21:59,945 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 187 flow. Second operand 6 states and 180 transitions. [2024-06-28 01:21:59,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 97 transitions, 483 flow [2024-06-28 01:21:59,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 97 transitions, 466 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:21:59,949 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 250 flow [2024-06-28 01:21:59,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-06-28 01:21:59,950 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-06-28 01:21:59,950 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 250 flow [2024-06-28 01:21:59,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 01:21:59,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:59,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:59,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:21:59,951 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:59,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:59,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1280597492, now seen corresponding path program 1 times [2024-06-28 01:21:59,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:59,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884651919] [2024-06-28 01:21:59,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:59,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:01,534 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 01:22:01,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:01,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884651919] [2024-06-28 01:22:01,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884651919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:01,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:01,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:01,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342732977] [2024-06-28 01:22:01,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:01,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:01,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:01,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-28 01:22:01,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:01,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:01,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-28 01:22:01,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:02,445 INFO L124 PetriNetUnfolderBase]: 3275/5561 cut-off events. [2024-06-28 01:22:02,445 INFO L125 PetriNetUnfolderBase]: For 4524/4524 co-relation queries the response was YES. [2024-06-28 01:22:02,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13729 conditions, 5561 events. 3275/5561 cut-off events. For 4524/4524 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 36309 event pairs, 1178 based on Foata normal form. 6/5322 useless extension candidates. Maximal degree in co-relation 13711. Up to 4620 conditions per place. [2024-06-28 01:22:02,492 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 77 selfloop transitions, 16 changer transitions 0/106 dead transitions. [2024-06-28 01:22:02,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 106 transitions, 562 flow [2024-06-28 01:22:02,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:02,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-06-28 01:22:02,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.597667638483965 [2024-06-28 01:22:02,495 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 250 flow. Second operand 7 states and 205 transitions. [2024-06-28 01:22:02,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 106 transitions, 562 flow [2024-06-28 01:22:02,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 106 transitions, 532 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:02,513 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 271 flow [2024-06-28 01:22:02,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-06-28 01:22:02,514 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2024-06-28 01:22:02,514 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 271 flow [2024-06-28 01:22:02,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:02,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:02,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:02,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:22:02,517 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:02,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:02,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1661914531, now seen corresponding path program 1 times [2024-06-28 01:22:02,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:02,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156108198] [2024-06-28 01:22:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:02,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:03,102 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 01:22:03,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:03,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156108198] [2024-06-28 01:22:03,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156108198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:03,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:03,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:22:03,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041137816] [2024-06-28 01:22:03,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:03,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:22:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:03,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:22:03,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:22:03,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:03,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 271 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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 01:22:03,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:03,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:03,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:03,934 INFO L124 PetriNetUnfolderBase]: 3810/6386 cut-off events. [2024-06-28 01:22:03,934 INFO L125 PetriNetUnfolderBase]: For 7544/7544 co-relation queries the response was YES. [2024-06-28 01:22:03,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16391 conditions, 6386 events. 3810/6386 cut-off events. For 7544/7544 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 41818 event pairs, 1709 based on Foata normal form. 2/6164 useless extension candidates. Maximal degree in co-relation 16371. Up to 5452 conditions per place. [2024-06-28 01:22:03,971 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 59 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2024-06-28 01:22:03,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 471 flow [2024-06-28 01:22:03,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:22:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:22:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-28 01:22:03,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-06-28 01:22:03,973 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 271 flow. Second operand 5 states and 128 transitions. [2024-06-28 01:22:03,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 471 flow [2024-06-28 01:22:03,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 430 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:03,980 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 283 flow [2024-06-28 01:22:03,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-28 01:22:03,982 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2024-06-28 01:22:03,982 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 283 flow [2024-06-28 01:22:03,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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 01:22:03,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:03,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:03,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:22:03,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:03,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:03,984 INFO L85 PathProgramCache]: Analyzing trace with hash 20258778, now seen corresponding path program 1 times [2024-06-28 01:22:03,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:03,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472287151] [2024-06-28 01:22:03,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:03,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:04,652 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 01:22:04,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:04,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472287151] [2024-06-28 01:22:04,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472287151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:04,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:04,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:04,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865597753] [2024-06-28 01:22:04,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:04,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:04,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:04,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:04,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:04,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:04,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 283 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:04,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:04,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:04,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:05,666 INFO L124 PetriNetUnfolderBase]: 4485/7493 cut-off events. [2024-06-28 01:22:05,666 INFO L125 PetriNetUnfolderBase]: For 11222/11222 co-relation queries the response was YES. [2024-06-28 01:22:05,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19962 conditions, 7493 events. 4485/7493 cut-off events. For 11222/11222 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 49384 event pairs, 2037 based on Foata normal form. 2/7283 useless extension candidates. Maximal degree in co-relation 19940. Up to 6384 conditions per place. [2024-06-28 01:22:05,703 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 68 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2024-06-28 01:22:05,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 531 flow [2024-06-28 01:22:05,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:05,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:22:05,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2024-06-28 01:22:05,705 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 283 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:22:05,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 531 flow [2024-06-28 01:22:05,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 504 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:05,711 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 318 flow [2024-06-28 01:22:05,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-06-28 01:22:05,712 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2024-06-28 01:22:05,712 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 318 flow [2024-06-28 01:22:05,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:05,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:05,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:05,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:22:05,713 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:05,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:05,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1930543375, now seen corresponding path program 1 times [2024-06-28 01:22:05,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:05,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395146584] [2024-06-28 01:22:05,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:05,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:06,581 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 01:22:06,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:06,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395146584] [2024-06-28 01:22:06,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395146584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:06,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:06,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:06,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626771678] [2024-06-28 01:22:06,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:06,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:06,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:06,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:06,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:06,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:06,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 318 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 01:22:06,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:06,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:06,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:07,390 INFO L124 PetriNetUnfolderBase]: 4264/7226 cut-off events. [2024-06-28 01:22:07,390 INFO L125 PetriNetUnfolderBase]: For 14892/14896 co-relation queries the response was YES. [2024-06-28 01:22:07,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20373 conditions, 7226 events. 4264/7226 cut-off events. For 14892/14896 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 48075 event pairs, 1640 based on Foata normal form. 6/6985 useless extension candidates. Maximal degree in co-relation 20350. Up to 6047 conditions per place. [2024-06-28 01:22:07,432 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 76 selfloop transitions, 18 changer transitions 0/106 dead transitions. [2024-06-28 01:22:07,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 106 transitions, 671 flow [2024-06-28 01:22:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:07,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:07,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-28 01:22:07,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-06-28 01:22:07,433 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 318 flow. Second operand 6 states and 159 transitions. [2024-06-28 01:22:07,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 106 transitions, 671 flow [2024-06-28 01:22:07,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 106 transitions, 628 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:07,441 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 408 flow [2024-06-28 01:22:07,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2024-06-28 01:22:07,443 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2024-06-28 01:22:07,443 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 408 flow [2024-06-28 01:22:07,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 01:22:07,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:07,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:07,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:22:07,443 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:07,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:07,443 INFO L85 PathProgramCache]: Analyzing trace with hash 652693419, now seen corresponding path program 2 times [2024-06-28 01:22:07,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:07,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610691402] [2024-06-28 01:22:07,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:07,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:08,228 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 01:22:08,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:08,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610691402] [2024-06-28 01:22:08,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610691402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:08,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:08,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:08,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934485844] [2024-06-28 01:22:08,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:08,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:08,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:08,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:08,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:08,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:08,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 408 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 01:22:08,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:08,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:08,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:09,099 INFO L124 PetriNetUnfolderBase]: 4268/7258 cut-off events. [2024-06-28 01:22:09,100 INFO L125 PetriNetUnfolderBase]: For 19504/19504 co-relation queries the response was YES. [2024-06-28 01:22:09,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21808 conditions, 7258 events. 4268/7258 cut-off events. For 19504/19504 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 48943 event pairs, 1843 based on Foata normal form. 2/7037 useless extension candidates. Maximal degree in co-relation 21783. Up to 6099 conditions per place. [2024-06-28 01:22:09,139 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 73 selfloop transitions, 15 changer transitions 0/100 dead transitions. [2024-06-28 01:22:09,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 100 transitions, 654 flow [2024-06-28 01:22:09,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:22:09,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4839650145772595 [2024-06-28 01:22:09,141 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 408 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:22:09,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 100 transitions, 654 flow [2024-06-28 01:22:09,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 100 transitions, 622 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-28 01:22:09,151 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 433 flow [2024-06-28 01:22:09,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2024-06-28 01:22:09,152 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-06-28 01:22:09,152 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 433 flow [2024-06-28 01:22:09,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 01:22:09,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:09,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:09,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:22:09,153 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:09,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:09,153 INFO L85 PathProgramCache]: Analyzing trace with hash -92322544, now seen corresponding path program 1 times [2024-06-28 01:22:09,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:09,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440542047] [2024-06-28 01:22:09,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:09,914 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 01:22:09,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:09,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440542047] [2024-06-28 01:22:09,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440542047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:09,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:09,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:09,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397996747] [2024-06-28 01:22:09,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:09,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:09,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:10,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:10,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 433 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:10,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:10,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:10,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:11,103 INFO L124 PetriNetUnfolderBase]: 4498/7490 cut-off events. [2024-06-28 01:22:11,103 INFO L125 PetriNetUnfolderBase]: For 20769/20769 co-relation queries the response was YES. [2024-06-28 01:22:11,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22447 conditions, 7490 events. 4498/7490 cut-off events. For 20769/20769 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 49232 event pairs, 1916 based on Foata normal form. 4/7280 useless extension candidates. Maximal degree in co-relation 22418. Up to 6368 conditions per place. [2024-06-28 01:22:11,155 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 83 selfloop transitions, 21 changer transitions 0/114 dead transitions. [2024-06-28 01:22:11,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 114 transitions, 751 flow [2024-06-28 01:22:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:22:11,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043731778425656 [2024-06-28 01:22:11,157 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 433 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:22:11,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 114 transitions, 751 flow [2024-06-28 01:22:11,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 114 transitions, 703 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:11,167 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 467 flow [2024-06-28 01:22:11,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=467, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2024-06-28 01:22:11,168 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-06-28 01:22:11,169 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 467 flow [2024-06-28 01:22:11,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:11,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:11,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:11,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:22:11,169 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:11,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:11,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1226843276, now seen corresponding path program 1 times [2024-06-28 01:22:11,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:11,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202849328] [2024-06-28 01:22:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:11,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:12,112 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 01:22:12,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:12,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202849328] [2024-06-28 01:22:12,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202849328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:12,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:12,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:12,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113139043] [2024-06-28 01:22:12,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:12,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:12,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:12,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:12,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 467 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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 01:22:12,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:12,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:12,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:13,128 INFO L124 PetriNetUnfolderBase]: 4272/7207 cut-off events. [2024-06-28 01:22:13,129 INFO L125 PetriNetUnfolderBase]: For 25203/25207 co-relation queries the response was YES. [2024-06-28 01:22:13,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22814 conditions, 7207 events. 4272/7207 cut-off events. For 25203/25207 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 47723 event pairs, 1553 based on Foata normal form. 6/6966 useless extension candidates. Maximal degree in co-relation 22786. Up to 6065 conditions per place. [2024-06-28 01:22:13,175 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 94 selfloop transitions, 16 changer transitions 0/122 dead transitions. [2024-06-28 01:22:13,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 122 transitions, 821 flow [2024-06-28 01:22:13,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:13,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:13,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:22:13,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335276967930029 [2024-06-28 01:22:13,177 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 467 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:22:13,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 122 transitions, 821 flow [2024-06-28 01:22:13,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 122 transitions, 763 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:13,187 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 483 flow [2024-06-28 01:22:13,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=483, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2024-06-28 01:22:13,188 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-28 01:22:13,188 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 483 flow [2024-06-28 01:22:13,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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 01:22:13,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:13,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:13,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:22:13,190 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:13,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:13,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1226963246, now seen corresponding path program 2 times [2024-06-28 01:22:13,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:13,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995238218] [2024-06-28 01:22:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:13,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:14,075 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 01:22:14,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:14,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995238218] [2024-06-28 01:22:14,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995238218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:14,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:14,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:14,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590445158] [2024-06-28 01:22:14,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:14,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:14,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:14,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:14,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:14,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:14,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 483 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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 01:22:14,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:14,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:14,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:14,966 INFO L124 PetriNetUnfolderBase]: 4300/7250 cut-off events. [2024-06-28 01:22:14,967 INFO L125 PetriNetUnfolderBase]: For 30426/30436 co-relation queries the response was YES. [2024-06-28 01:22:14,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23976 conditions, 7250 events. 4300/7250 cut-off events. For 30426/30436 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 47923 event pairs, 1561 based on Foata normal form. 12/7015 useless extension candidates. Maximal degree in co-relation 23947. Up to 6023 conditions per place. [2024-06-28 01:22:15,075 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 86 selfloop transitions, 29 changer transitions 0/127 dead transitions. [2024-06-28 01:22:15,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 921 flow [2024-06-28 01:22:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 01:22:15,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422740524781341 [2024-06-28 01:22:15,077 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 483 flow. Second operand 7 states and 186 transitions. [2024-06-28 01:22:15,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 921 flow [2024-06-28 01:22:15,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 127 transitions, 871 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:15,092 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 573 flow [2024-06-28 01:22:15,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=573, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-06-28 01:22:15,093 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2024-06-28 01:22:15,093 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 573 flow [2024-06-28 01:22:15,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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 01:22:15,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:15,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:15,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:22:15,094 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:15,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:15,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1226963432, now seen corresponding path program 1 times [2024-06-28 01:22:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:15,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755025599] [2024-06-28 01:22:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:15,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:16,034 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 01:22:16,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:16,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755025599] [2024-06-28 01:22:16,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755025599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:16,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:16,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:16,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769749012] [2024-06-28 01:22:16,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:16,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:16,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:16,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:16,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:16,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:16,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 573 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:16,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:16,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:16,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:16,918 INFO L124 PetriNetUnfolderBase]: 4647/7737 cut-off events. [2024-06-28 01:22:16,919 INFO L125 PetriNetUnfolderBase]: For 36848/36854 co-relation queries the response was YES. [2024-06-28 01:22:16,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26583 conditions, 7737 events. 4647/7737 cut-off events. For 36848/36854 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 50325 event pairs, 1700 based on Foata normal form. 4/7490 useless extension candidates. Maximal degree in co-relation 26553. Up to 6528 conditions per place. [2024-06-28 01:22:16,961 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 103 selfloop transitions, 28 changer transitions 0/141 dead transitions. [2024-06-28 01:22:16,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 141 transitions, 1095 flow [2024-06-28 01:22:16,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:16,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:22:16,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:22:16,963 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 573 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:22:16,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 141 transitions, 1095 flow [2024-06-28 01:22:16,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 141 transitions, 1044 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:16,981 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 760 flow [2024-06-28 01:22:16,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=760, PETRI_PLACES=92, PETRI_TRANSITIONS=106} [2024-06-28 01:22:16,982 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 37 predicate places. [2024-06-28 01:22:16,982 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 760 flow [2024-06-28 01:22:16,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:16,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:16,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:16,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:22:16,982 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:16,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:16,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1258313164, now seen corresponding path program 2 times [2024-06-28 01:22:16,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:16,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017250115] [2024-06-28 01:22:16,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:16,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:17,679 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 01:22:17,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:17,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017250115] [2024-06-28 01:22:17,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017250115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:17,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:17,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:17,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019955802] [2024-06-28 01:22:17,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:17,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:17,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:17,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:17,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:17,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:17,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 760 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:17,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:17,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:17,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:18,783 INFO L124 PetriNetUnfolderBase]: 4670/7806 cut-off events. [2024-06-28 01:22:18,784 INFO L125 PetriNetUnfolderBase]: For 44140/44140 co-relation queries the response was YES. [2024-06-28 01:22:18,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28399 conditions, 7806 events. 4670/7806 cut-off events. For 44140/44140 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 51429 event pairs, 1910 based on Foata normal form. 2/7589 useless extension candidates. Maximal degree in co-relation 28364. Up to 6637 conditions per place. [2024-06-28 01:22:18,828 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 109 selfloop transitions, 18 changer transitions 0/137 dead transitions. [2024-06-28 01:22:18,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 137 transitions, 1125 flow [2024-06-28 01:22:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:22:18,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49271137026239065 [2024-06-28 01:22:18,829 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 760 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:22:18,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 137 transitions, 1125 flow [2024-06-28 01:22:18,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 137 transitions, 1096 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:18,855 INFO L231 Difference]: Finished difference. Result has 97 places, 109 transitions, 820 flow [2024-06-28 01:22:18,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=820, PETRI_PLACES=97, PETRI_TRANSITIONS=109} [2024-06-28 01:22:18,856 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 42 predicate places. [2024-06-28 01:22:18,856 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 109 transitions, 820 flow [2024-06-28 01:22:18,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:18,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:18,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:18,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:22:18,857 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:18,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:18,857 INFO L85 PathProgramCache]: Analyzing trace with hash -278054388, now seen corresponding path program 3 times [2024-06-28 01:22:18,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:18,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675483443] [2024-06-28 01:22:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:18,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:19,735 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 01:22:19,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:19,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675483443] [2024-06-28 01:22:19,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675483443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:19,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:19,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:19,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479411594] [2024-06-28 01:22:19,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:19,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:19,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:19,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:19,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:19,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:19,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 109 transitions, 820 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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 01:22:19,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:19,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:19,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:20,701 INFO L124 PetriNetUnfolderBase]: 4429/7539 cut-off events. [2024-06-28 01:22:20,701 INFO L125 PetriNetUnfolderBase]: For 47547/47563 co-relation queries the response was YES. [2024-06-28 01:22:20,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27723 conditions, 7539 events. 4429/7539 cut-off events. For 47547/47563 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 50820 event pairs, 1772 based on Foata normal form. 2/7315 useless extension candidates. Maximal degree in co-relation 27686. Up to 6283 conditions per place. [2024-06-28 01:22:20,743 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 106 selfloop transitions, 17 changer transitions 0/139 dead transitions. [2024-06-28 01:22:20,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 139 transitions, 1148 flow [2024-06-28 01:22:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:20,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:20,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:22:20,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-28 01:22:20,745 INFO L175 Difference]: Start difference. First operand has 97 places, 109 transitions, 820 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:22:20,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 139 transitions, 1148 flow [2024-06-28 01:22:20,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 139 transitions, 1062 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:20,773 INFO L231 Difference]: Finished difference. Result has 99 places, 109 transitions, 776 flow [2024-06-28 01:22:20,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=776, PETRI_PLACES=99, PETRI_TRANSITIONS=109} [2024-06-28 01:22:20,774 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 44 predicate places. [2024-06-28 01:22:20,774 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 109 transitions, 776 flow [2024-06-28 01:22:20,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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 01:22:20,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:20,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:20,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:22:20,774 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:20,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2006371684, now seen corresponding path program 3 times [2024-06-28 01:22:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:20,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484383786] [2024-06-28 01:22:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:21,558 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 01:22:21,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:21,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484383786] [2024-06-28 01:22:21,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484383786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:21,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:21,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:21,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469959936] [2024-06-28 01:22:21,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:21,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:21,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:21,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:21,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:21,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:21,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 109 transitions, 776 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:21,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:21,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:21,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:22,560 INFO L124 PetriNetUnfolderBase]: 4660/7791 cut-off events. [2024-06-28 01:22:22,560 INFO L125 PetriNetUnfolderBase]: For 49933/49933 co-relation queries the response was YES. [2024-06-28 01:22:22,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28764 conditions, 7791 events. 4660/7791 cut-off events. For 49933/49933 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 51450 event pairs, 1906 based on Foata normal form. 2/7574 useless extension candidates. Maximal degree in co-relation 28726. Up to 6591 conditions per place. [2024-06-28 01:22:22,612 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 106 selfloop transitions, 23 changer transitions 0/139 dead transitions. [2024-06-28 01:22:22,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 139 transitions, 1116 flow [2024-06-28 01:22:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:22,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:22:22,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014577259475219 [2024-06-28 01:22:22,614 INFO L175 Difference]: Start difference. First operand has 99 places, 109 transitions, 776 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:22:22,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 139 transitions, 1116 flow [2024-06-28 01:22:22,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 139 transitions, 1047 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:22,653 INFO L231 Difference]: Finished difference. Result has 100 places, 109 transitions, 761 flow [2024-06-28 01:22:22,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=761, PETRI_PLACES=100, PETRI_TRANSITIONS=109} [2024-06-28 01:22:22,654 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 45 predicate places. [2024-06-28 01:22:22,654 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 109 transitions, 761 flow [2024-06-28 01:22:22,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:22,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:22,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:22,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:22:22,655 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:22,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:22,655 INFO L85 PathProgramCache]: Analyzing trace with hash 258769090, now seen corresponding path program 4 times [2024-06-28 01:22:22,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:22,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030426827] [2024-06-28 01:22:22,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:22,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:23,343 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 01:22:23,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:23,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030426827] [2024-06-28 01:22:23,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030426827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:23,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:23,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:23,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024995538] [2024-06-28 01:22:23,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:23,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:23,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:23,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:23,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:23,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:23,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 109 transitions, 761 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:23,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:23,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:23,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:24,457 INFO L124 PetriNetUnfolderBase]: 4812/8032 cut-off events. [2024-06-28 01:22:24,458 INFO L125 PetriNetUnfolderBase]: For 54030/54034 co-relation queries the response was YES. [2024-06-28 01:22:24,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30153 conditions, 8032 events. 4812/8032 cut-off events. For 54030/54034 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 52960 event pairs, 1888 based on Foata normal form. 3/7811 useless extension candidates. Maximal degree in co-relation 30114. Up to 6643 conditions per place. [2024-06-28 01:22:24,511 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 124 selfloop transitions, 64 changer transitions 0/198 dead transitions. [2024-06-28 01:22:24,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 198 transitions, 1688 flow [2024-06-28 01:22:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:24,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:22:24,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-28 01:22:24,512 INFO L175 Difference]: Start difference. First operand has 100 places, 109 transitions, 761 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:22:24,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 198 transitions, 1688 flow [2024-06-28 01:22:24,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 198 transitions, 1576 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:24,545 INFO L231 Difference]: Finished difference. Result has 106 places, 154 transitions, 1284 flow [2024-06-28 01:22:24,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1284, PETRI_PLACES=106, PETRI_TRANSITIONS=154} [2024-06-28 01:22:24,545 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2024-06-28 01:22:24,545 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 154 transitions, 1284 flow [2024-06-28 01:22:24,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:24,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:24,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:24,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:22:24,546 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:24,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash 276428971, now seen corresponding path program 1 times [2024-06-28 01:22:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:24,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318600697] [2024-06-28 01:22:24,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:24,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:25,141 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 01:22:25,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:25,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318600697] [2024-06-28 01:22:25,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318600697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:25,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:25,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:22:25,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306757699] [2024-06-28 01:22:25,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:25,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:22:25,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:25,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:22:25,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:22:25,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:25,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 154 transitions, 1284 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:25,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:25,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:25,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:26,275 INFO L124 PetriNetUnfolderBase]: 5624/9516 cut-off events. [2024-06-28 01:22:26,276 INFO L125 PetriNetUnfolderBase]: For 77043/77075 co-relation queries the response was YES. [2024-06-28 01:22:26,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36528 conditions, 9516 events. 5624/9516 cut-off events. For 77043/77075 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 65384 event pairs, 2525 based on Foata normal form. 1/9207 useless extension candidates. Maximal degree in co-relation 36485. Up to 8006 conditions per place. [2024-06-28 01:22:26,350 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 112 selfloop transitions, 12 changer transitions 0/171 dead transitions. [2024-06-28 01:22:26,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 171 transitions, 1600 flow [2024-06-28 01:22:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:22:26,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:22:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 01:22:26,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:22:26,351 INFO L175 Difference]: Start difference. First operand has 106 places, 154 transitions, 1284 flow. Second operand 5 states and 120 transitions. [2024-06-28 01:22:26,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 171 transitions, 1600 flow [2024-06-28 01:22:26,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 171 transitions, 1538 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:26,408 INFO L231 Difference]: Finished difference. Result has 108 places, 157 transitions, 1281 flow [2024-06-28 01:22:26,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1281, PETRI_PLACES=108, PETRI_TRANSITIONS=157} [2024-06-28 01:22:26,409 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 53 predicate places. [2024-06-28 01:22:26,409 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 157 transitions, 1281 flow [2024-06-28 01:22:26,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:26,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:26,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:26,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:22:26,409 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:26,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:26,409 INFO L85 PathProgramCache]: Analyzing trace with hash -622652786, now seen corresponding path program 1 times [2024-06-28 01:22:26,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:26,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327629102] [2024-06-28 01:22:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:26,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:27,610 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 01:22:27,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:27,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327629102] [2024-06-28 01:22:27,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327629102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:27,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:27,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:27,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745359373] [2024-06-28 01:22:27,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:27,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:27,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:27,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:27,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:27,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:27,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 157 transitions, 1281 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 01:22:27,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:27,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:27,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:29,053 INFO L124 PetriNetUnfolderBase]: 4922/8235 cut-off events. [2024-06-28 01:22:29,054 INFO L125 PetriNetUnfolderBase]: For 76811/76843 co-relation queries the response was YES. [2024-06-28 01:22:29,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34604 conditions, 8235 events. 4922/8235 cut-off events. For 76811/76843 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 55145 event pairs, 1786 based on Foata normal form. 2/7986 useless extension candidates. Maximal degree in co-relation 34559. Up to 6777 conditions per place. [2024-06-28 01:22:29,119 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 164 selfloop transitions, 46 changer transitions 0/235 dead transitions. [2024-06-28 01:22:29,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 235 transitions, 2222 flow [2024-06-28 01:22:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:29,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-28 01:22:29,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-06-28 01:22:29,121 INFO L175 Difference]: Start difference. First operand has 108 places, 157 transitions, 1281 flow. Second operand 9 states and 240 transitions. [2024-06-28 01:22:29,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 235 transitions, 2222 flow [2024-06-28 01:22:29,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 235 transitions, 2187 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:29,172 INFO L231 Difference]: Finished difference. Result has 115 places, 173 transitions, 1605 flow [2024-06-28 01:22:29,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1605, PETRI_PLACES=115, PETRI_TRANSITIONS=173} [2024-06-28 01:22:29,172 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-06-28 01:22:29,172 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 173 transitions, 1605 flow [2024-06-28 01:22:29,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 01:22:29,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:29,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:29,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:22:29,174 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:29,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:29,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1236695063, now seen corresponding path program 1 times [2024-06-28 01:22:29,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:29,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040173984] [2024-06-28 01:22:29,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:29,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:30,254 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 01:22:30,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:30,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040173984] [2024-06-28 01:22:30,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040173984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:30,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:30,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:30,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614120127] [2024-06-28 01:22:30,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:30,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:30,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:30,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:30,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:30,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:30,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 173 transitions, 1605 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:30,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:30,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:30,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:31,564 INFO L124 PetriNetUnfolderBase]: 5218/8586 cut-off events. [2024-06-28 01:22:31,564 INFO L125 PetriNetUnfolderBase]: For 90881/90881 co-relation queries the response was YES. [2024-06-28 01:22:31,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38446 conditions, 8586 events. 5218/8586 cut-off events. For 90881/90881 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 56408 event pairs, 1904 based on Foata normal form. 2/8337 useless extension candidates. Maximal degree in co-relation 38399. Up to 7281 conditions per place. [2024-06-28 01:22:31,639 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 185 selfloop transitions, 28 changer transitions 0/224 dead transitions. [2024-06-28 01:22:31,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 224 transitions, 2256 flow [2024-06-28 01:22:31,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:22:31,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127551020408163 [2024-06-28 01:22:31,641 INFO L175 Difference]: Start difference. First operand has 115 places, 173 transitions, 1605 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:22:31,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 224 transitions, 2256 flow [2024-06-28 01:22:31,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 224 transitions, 2120 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:31,723 INFO L231 Difference]: Finished difference. Result has 121 places, 176 transitions, 1585 flow [2024-06-28 01:22:31,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1585, PETRI_PLACES=121, PETRI_TRANSITIONS=176} [2024-06-28 01:22:31,724 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 66 predicate places. [2024-06-28 01:22:31,724 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 176 transitions, 1585 flow [2024-06-28 01:22:31,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:31,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:31,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:31,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:22:31,724 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:31,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:31,725 INFO L85 PathProgramCache]: Analyzing trace with hash -177359504, now seen corresponding path program 2 times [2024-06-28 01:22:31,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:31,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983814530] [2024-06-28 01:22:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:31,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:33,159 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 01:22:33,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:33,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983814530] [2024-06-28 01:22:33,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983814530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:33,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:33,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:33,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301724707] [2024-06-28 01:22:33,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:33,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:33,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:33,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:33,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:33,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:33,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 176 transitions, 1585 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 01:22:33,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:33,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:33,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:34,656 INFO L124 PetriNetUnfolderBase]: 4952/8284 cut-off events. [2024-06-28 01:22:34,656 INFO L125 PetriNetUnfolderBase]: For 99275/99327 co-relation queries the response was YES. [2024-06-28 01:22:34,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37967 conditions, 8284 events. 4952/8284 cut-off events. For 99275/99327 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 55524 event pairs, 1788 based on Foata normal form. 2/8034 useless extension candidates. Maximal degree in co-relation 37918. Up to 6852 conditions per place. [2024-06-28 01:22:34,716 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 161 selfloop transitions, 40 changer transitions 0/227 dead transitions. [2024-06-28 01:22:34,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 227 transitions, 2196 flow [2024-06-28 01:22:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:34,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:22:34,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-06-28 01:22:34,718 INFO L175 Difference]: Start difference. First operand has 121 places, 176 transitions, 1585 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:22:34,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 227 transitions, 2196 flow [2024-06-28 01:22:34,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 227 transitions, 2060 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:34,784 INFO L231 Difference]: Finished difference. Result has 124 places, 178 transitions, 1570 flow [2024-06-28 01:22:34,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1570, PETRI_PLACES=124, PETRI_TRANSITIONS=178} [2024-06-28 01:22:34,785 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 69 predicate places. [2024-06-28 01:22:34,785 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 178 transitions, 1570 flow [2024-06-28 01:22:34,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 01:22:34,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:34,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:34,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:22:34,786 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:34,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:34,786 INFO L85 PathProgramCache]: Analyzing trace with hash -173634699, now seen corresponding path program 2 times [2024-06-28 01:22:34,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:34,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456268498] [2024-06-28 01:22:34,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:34,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:35,793 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 01:22:35,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:35,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456268498] [2024-06-28 01:22:35,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456268498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:35,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:35,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:35,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027178707] [2024-06-28 01:22:35,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:35,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:35,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:35,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:35,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:35,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:35,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 178 transitions, 1570 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:35,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:35,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:35,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:37,262 INFO L124 PetriNetUnfolderBase]: 5196/8515 cut-off events. [2024-06-28 01:22:37,263 INFO L125 PetriNetUnfolderBase]: For 106701/106705 co-relation queries the response was YES. [2024-06-28 01:22:37,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39867 conditions, 8515 events. 5196/8515 cut-off events. For 106701/106705 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 55151 event pairs, 1711 based on Foata normal form. 3/8249 useless extension candidates. Maximal degree in co-relation 39817. Up to 6866 conditions per place. [2024-06-28 01:22:37,367 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 148 selfloop transitions, 81 changer transitions 0/240 dead transitions. [2024-06-28 01:22:37,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 240 transitions, 2538 flow [2024-06-28 01:22:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:37,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:22:37,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331632653061225 [2024-06-28 01:22:37,368 INFO L175 Difference]: Start difference. First operand has 124 places, 178 transitions, 1570 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:22:37,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 240 transitions, 2538 flow [2024-06-28 01:22:37,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 240 transitions, 2449 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:37,430 INFO L231 Difference]: Finished difference. Result has 125 places, 187 transitions, 1817 flow [2024-06-28 01:22:37,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1817, PETRI_PLACES=125, PETRI_TRANSITIONS=187} [2024-06-28 01:22:37,431 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 70 predicate places. [2024-06-28 01:22:37,431 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 187 transitions, 1817 flow [2024-06-28 01:22:37,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:37,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:37,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:37,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:22:37,432 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:37,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:37,432 INFO L85 PathProgramCache]: Analyzing trace with hash -173634482, now seen corresponding path program 1 times [2024-06-28 01:22:37,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:37,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013870637] [2024-06-28 01:22:37,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:37,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:38,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:38,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013870637] [2024-06-28 01:22:38,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013870637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:38,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:38,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:38,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975867208] [2024-06-28 01:22:38,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:38,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:38,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:38,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:38,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:38,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:38,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 187 transitions, 1817 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:38,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:38,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:38,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:39,652 INFO L124 PetriNetUnfolderBase]: 5362/8802 cut-off events. [2024-06-28 01:22:39,652 INFO L125 PetriNetUnfolderBase]: For 123802/123806 co-relation queries the response was YES. [2024-06-28 01:22:39,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42540 conditions, 8802 events. 5362/8802 cut-off events. For 123802/123806 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 57734 event pairs, 1835 based on Foata normal form. 5/8559 useless extension candidates. Maximal degree in co-relation 42490. Up to 7258 conditions per place. [2024-06-28 01:22:39,724 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 164 selfloop transitions, 71 changer transitions 0/246 dead transitions. [2024-06-28 01:22:39,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 246 transitions, 2663 flow [2024-06-28 01:22:39,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:39,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 01:22:39,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988662131519274 [2024-06-28 01:22:39,725 INFO L175 Difference]: Start difference. First operand has 125 places, 187 transitions, 1817 flow. Second operand 9 states and 220 transitions. [2024-06-28 01:22:39,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 246 transitions, 2663 flow [2024-06-28 01:22:39,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 246 transitions, 2575 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:39,799 INFO L231 Difference]: Finished difference. Result has 132 places, 197 transitions, 2022 flow [2024-06-28 01:22:39,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2022, PETRI_PLACES=132, PETRI_TRANSITIONS=197} [2024-06-28 01:22:39,800 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 77 predicate places. [2024-06-28 01:22:39,800 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 197 transitions, 2022 flow [2024-06-28 01:22:39,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:39,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:39,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:39,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:22:39,800 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:39,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:39,801 INFO L85 PathProgramCache]: Analyzing trace with hash -618843351, now seen corresponding path program 3 times [2024-06-28 01:22:39,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:39,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510107174] [2024-06-28 01:22:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:39,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:40,788 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 01:22:40,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:40,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510107174] [2024-06-28 01:22:40,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510107174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:40,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:40,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:40,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037847635] [2024-06-28 01:22:40,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:40,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:40,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:40,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:40,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:40,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:40,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 197 transitions, 2022 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:40,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:40,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:40,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:42,066 INFO L124 PetriNetUnfolderBase]: 5297/8686 cut-off events. [2024-06-28 01:22:42,067 INFO L125 PetriNetUnfolderBase]: For 133838/133842 co-relation queries the response was YES. [2024-06-28 01:22:42,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44147 conditions, 8686 events. 5297/8686 cut-off events. For 133838/133842 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 56372 event pairs, 1645 based on Foata normal form. 3/8416 useless extension candidates. Maximal degree in co-relation 44094. Up to 7007 conditions per place. [2024-06-28 01:22:42,132 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 152 selfloop transitions, 82 changer transitions 0/245 dead transitions. [2024-06-28 01:22:42,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 245 transitions, 2761 flow [2024-06-28 01:22:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:22:42,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-28 01:22:42,134 INFO L175 Difference]: Start difference. First operand has 132 places, 197 transitions, 2022 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:22:42,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 245 transitions, 2761 flow [2024-06-28 01:22:42,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 245 transitions, 2668 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:42,235 INFO L231 Difference]: Finished difference. Result has 136 places, 197 transitions, 2101 flow [2024-06-28 01:22:42,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2101, PETRI_PLACES=136, PETRI_TRANSITIONS=197} [2024-06-28 01:22:42,235 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 81 predicate places. [2024-06-28 01:22:42,235 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 197 transitions, 2101 flow [2024-06-28 01:22:42,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:42,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:42,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:42,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:22:42,236 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:42,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:42,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1138722468, now seen corresponding path program 3 times [2024-06-28 01:22:42,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:42,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408851184] [2024-06-28 01:22:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:42,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:43,525 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 01:22:43,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:43,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408851184] [2024-06-28 01:22:43,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408851184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:43,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:43,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:43,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332678156] [2024-06-28 01:22:43,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:43,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:43,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:43,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:43,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:43,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:43,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 197 transitions, 2101 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 01:22:43,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:43,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:43,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:45,020 INFO L124 PetriNetUnfolderBase]: 5048/8441 cut-off events. [2024-06-28 01:22:45,021 INFO L125 PetriNetUnfolderBase]: For 139239/139267 co-relation queries the response was YES. [2024-06-28 01:22:45,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43088 conditions, 8441 events. 5048/8441 cut-off events. For 139239/139267 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 56192 event pairs, 1522 based on Foata normal form. 6/8170 useless extension candidates. Maximal degree in co-relation 43033. Up to 6830 conditions per place. [2024-06-28 01:22:45,107 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 171 selfloop transitions, 49 changer transitions 0/249 dead transitions. [2024-06-28 01:22:45,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 249 transitions, 2791 flow [2024-06-28 01:22:45,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:45,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:45,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:22:45,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331632653061225 [2024-06-28 01:22:45,109 INFO L175 Difference]: Start difference. First operand has 136 places, 197 transitions, 2101 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:22:45,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 249 transitions, 2791 flow [2024-06-28 01:22:45,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 249 transitions, 2591 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:45,270 INFO L231 Difference]: Finished difference. Result has 137 places, 200 transitions, 2065 flow [2024-06-28 01:22:45,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2065, PETRI_PLACES=137, PETRI_TRANSITIONS=200} [2024-06-28 01:22:45,270 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 82 predicate places. [2024-06-28 01:22:45,270 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 200 transitions, 2065 flow [2024-06-28 01:22:45,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 01:22:45,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:45,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:45,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:22:45,271 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:45,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:45,271 INFO L85 PathProgramCache]: Analyzing trace with hash 173204458, now seen corresponding path program 2 times [2024-06-28 01:22:45,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:45,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047803469] [2024-06-28 01:22:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:45,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:46,203 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 01:22:46,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:46,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047803469] [2024-06-28 01:22:46,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047803469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:46,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:46,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:46,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718649161] [2024-06-28 01:22:46,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:46,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:46,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:46,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:46,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:46,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 200 transitions, 2065 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:46,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:46,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:46,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:47,485 INFO L124 PetriNetUnfolderBase]: 5333/8426 cut-off events. [2024-06-28 01:22:47,485 INFO L125 PetriNetUnfolderBase]: For 155032/155032 co-relation queries the response was YES. [2024-06-28 01:22:47,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45688 conditions, 8426 events. 5333/8426 cut-off events. For 155032/155032 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 53027 event pairs, 1842 based on Foata normal form. 4/8279 useless extension candidates. Maximal degree in co-relation 45632. Up to 7333 conditions per place. [2024-06-28 01:22:47,561 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 194 selfloop transitions, 45 changer transitions 0/250 dead transitions. [2024-06-28 01:22:47,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 250 transitions, 2869 flow [2024-06-28 01:22:47,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:22:47,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-06-28 01:22:47,562 INFO L175 Difference]: Start difference. First operand has 137 places, 200 transitions, 2065 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:22:47,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 250 transitions, 2869 flow [2024-06-28 01:22:47,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 250 transitions, 2729 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:47,720 INFO L231 Difference]: Finished difference. Result has 139 places, 203 transitions, 2077 flow [2024-06-28 01:22:47,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2077, PETRI_PLACES=139, PETRI_TRANSITIONS=203} [2024-06-28 01:22:47,721 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 84 predicate places. [2024-06-28 01:22:47,721 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 203 transitions, 2077 flow [2024-06-28 01:22:47,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:47,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:47,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:47,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:22:47,722 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:47,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:47,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1463846633, now seen corresponding path program 4 times [2024-06-28 01:22:47,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:47,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270384400] [2024-06-28 01:22:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:47,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:48,630 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 01:22:48,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:48,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270384400] [2024-06-28 01:22:48,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270384400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:48,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:48,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:48,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023363727] [2024-06-28 01:22:48,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:48,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:48,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:48,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:48,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:48,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:48,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 203 transitions, 2077 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:48,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:48,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:48,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:49,854 INFO L124 PetriNetUnfolderBase]: 5356/8458 cut-off events. [2024-06-28 01:22:49,854 INFO L125 PetriNetUnfolderBase]: For 162288/162288 co-relation queries the response was YES. [2024-06-28 01:22:49,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46104 conditions, 8458 events. 5356/8458 cut-off events. For 162288/162288 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 53160 event pairs, 1847 based on Foata normal form. 2/8308 useless extension candidates. Maximal degree in co-relation 46047. Up to 7390 conditions per place. [2024-06-28 01:22:49,947 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 190 selfloop transitions, 47 changer transitions 0/248 dead transitions. [2024-06-28 01:22:49,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 248 transitions, 2862 flow [2024-06-28 01:22:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:49,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:22:49,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076530612244898 [2024-06-28 01:22:49,948 INFO L175 Difference]: Start difference. First operand has 139 places, 203 transitions, 2077 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:22:49,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 248 transitions, 2862 flow [2024-06-28 01:22:50,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 248 transitions, 2712 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:50,107 INFO L231 Difference]: Finished difference. Result has 141 places, 206 transitions, 2087 flow [2024-06-28 01:22:50,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2087, PETRI_PLACES=141, PETRI_TRANSITIONS=206} [2024-06-28 01:22:50,107 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 86 predicate places. [2024-06-28 01:22:50,107 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 206 transitions, 2087 flow [2024-06-28 01:22:50,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:50,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:50,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:50,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:22:50,108 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:50,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:50,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1463846478, now seen corresponding path program 4 times [2024-06-28 01:22:50,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:50,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257344819] [2024-06-28 01:22:50,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:50,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:51,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:51,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257344819] [2024-06-28 01:22:51,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257344819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:51,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:51,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:51,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179258564] [2024-06-28 01:22:51,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:51,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:51,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:51,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:51,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:51,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:51,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 206 transitions, 2087 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 01:22:51,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:51,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:51,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:52,591 INFO L124 PetriNetUnfolderBase]: 5127/8275 cut-off events. [2024-06-28 01:22:52,591 INFO L125 PetriNetUnfolderBase]: For 166469/166542 co-relation queries the response was YES. [2024-06-28 01:22:52,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44721 conditions, 8275 events. 5127/8275 cut-off events. For 166469/166542 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 53662 event pairs, 1728 based on Foata normal form. 2/8100 useless extension candidates. Maximal degree in co-relation 44663. Up to 7098 conditions per place. [2024-06-28 01:22:52,683 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 193 selfloop transitions, 34 changer transitions 0/257 dead transitions. [2024-06-28 01:22:52,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 257 transitions, 2880 flow [2024-06-28 01:22:52,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:52,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:52,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:22:52,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-28 01:22:52,685 INFO L175 Difference]: Start difference. First operand has 141 places, 206 transitions, 2087 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:22:52,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 257 transitions, 2880 flow [2024-06-28 01:22:52,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 257 transitions, 2712 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:52,867 INFO L231 Difference]: Finished difference. Result has 145 places, 215 transitions, 2212 flow [2024-06-28 01:22:52,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2212, PETRI_PLACES=145, PETRI_TRANSITIONS=215} [2024-06-28 01:22:52,867 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 90 predicate places. [2024-06-28 01:22:52,867 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 215 transitions, 2212 flow [2024-06-28 01:22:52,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 01:22:52,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:52,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:52,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:22:52,868 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:52,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:52,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1463852213, now seen corresponding path program 5 times [2024-06-28 01:22:52,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:52,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68476000] [2024-06-28 01:22:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:52,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:53,810 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 01:22:53,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:53,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68476000] [2024-06-28 01:22:53,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68476000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:53,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:53,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:53,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778783676] [2024-06-28 01:22:53,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:53,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:53,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:53,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:53,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:53,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:53,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 215 transitions, 2212 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:53,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:53,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:53,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:55,089 INFO L124 PetriNetUnfolderBase]: 5389/8495 cut-off events. [2024-06-28 01:22:55,089 INFO L125 PetriNetUnfolderBase]: For 183252/183252 co-relation queries the response was YES. [2024-06-28 01:22:55,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47985 conditions, 8495 events. 5389/8495 cut-off events. For 183252/183252 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 53327 event pairs, 1841 based on Foata normal form. 2/8347 useless extension candidates. Maximal degree in co-relation 47924. Up to 7428 conditions per place. [2024-06-28 01:22:55,276 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 207 selfloop transitions, 46 changer transitions 0/264 dead transitions. [2024-06-28 01:22:55,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 264 transitions, 3048 flow [2024-06-28 01:22:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:22:55,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852607709750567 [2024-06-28 01:22:55,277 INFO L175 Difference]: Start difference. First operand has 145 places, 215 transitions, 2212 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:22:55,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 264 transitions, 3048 flow [2024-06-28 01:22:55,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 264 transitions, 2894 flow, removed 68 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:55,477 INFO L231 Difference]: Finished difference. Result has 151 places, 218 transitions, 2208 flow [2024-06-28 01:22:55,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2208, PETRI_PLACES=151, PETRI_TRANSITIONS=218} [2024-06-28 01:22:55,478 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 96 predicate places. [2024-06-28 01:22:55,478 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 218 transitions, 2208 flow [2024-06-28 01:22:55,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:55,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:55,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:55,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:22:55,479 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:55,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:55,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1472393550, now seen corresponding path program 3 times [2024-06-28 01:22:55,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:55,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642167706] [2024-06-28 01:22:55,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:55,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:56,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:56,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642167706] [2024-06-28 01:22:56,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642167706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:56,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:56,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:56,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867086543] [2024-06-28 01:22:56,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:56,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:56,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:56,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:56,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:56,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:56,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 218 transitions, 2208 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:56,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:56,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:56,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:57,681 INFO L124 PetriNetUnfolderBase]: 5435/8587 cut-off events. [2024-06-28 01:22:57,681 INFO L125 PetriNetUnfolderBase]: For 193068/193068 co-relation queries the response was YES. [2024-06-28 01:22:57,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48754 conditions, 8587 events. 5435/8587 cut-off events. For 193068/193068 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 54065 event pairs, 1856 based on Foata normal form. 4/8436 useless extension candidates. Maximal degree in co-relation 48691. Up to 7610 conditions per place. [2024-06-28 01:22:57,749 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 223 selfloop transitions, 22 changer transitions 0/256 dead transitions. [2024-06-28 01:22:57,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 256 transitions, 2860 flow [2024-06-28 01:22:57,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:57,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:22:57,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923469387755102 [2024-06-28 01:22:57,751 INFO L175 Difference]: Start difference. First operand has 151 places, 218 transitions, 2208 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:22:57,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 256 transitions, 2860 flow [2024-06-28 01:22:57,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 256 transitions, 2756 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:57,931 INFO L231 Difference]: Finished difference. Result has 153 places, 221 transitions, 2210 flow [2024-06-28 01:22:57,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2210, PETRI_PLACES=153, PETRI_TRANSITIONS=221} [2024-06-28 01:22:57,931 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 98 predicate places. [2024-06-28 01:22:57,931 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 221 transitions, 2210 flow [2024-06-28 01:22:57,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:57,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:57,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:57,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:22:57,932 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:57,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:57,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1472097810, now seen corresponding path program 4 times [2024-06-28 01:22:57,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:57,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604831718] [2024-06-28 01:22:57,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:57,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:58,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:58,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604831718] [2024-06-28 01:22:58,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604831718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:58,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:58,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:58,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196300929] [2024-06-28 01:22:58,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:58,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:58,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:58,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:58,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:58,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:58,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 221 transitions, 2210 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:58,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:58,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:58,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:00,183 INFO L124 PetriNetUnfolderBase]: 5425/8573 cut-off events. [2024-06-28 01:23:00,183 INFO L125 PetriNetUnfolderBase]: For 199917/199917 co-relation queries the response was YES. [2024-06-28 01:23:00,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48714 conditions, 8573 events. 5425/8573 cut-off events. For 199917/199917 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 54033 event pairs, 1854 based on Foata normal form. 4/8422 useless extension candidates. Maximal degree in co-relation 48650. Up to 7534 conditions per place. [2024-06-28 01:23:00,264 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 218 selfloop transitions, 33 changer transitions 0/262 dead transitions. [2024-06-28 01:23:00,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 262 transitions, 2861 flow [2024-06-28 01:23:00,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:00,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:23:00,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025510204081632 [2024-06-28 01:23:00,266 INFO L175 Difference]: Start difference. First operand has 153 places, 221 transitions, 2210 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:23:00,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 262 transitions, 2861 flow [2024-06-28 01:23:00,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 262 transitions, 2751 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:00,536 INFO L231 Difference]: Finished difference. Result has 155 places, 221 transitions, 2176 flow [2024-06-28 01:23:00,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2176, PETRI_PLACES=155, PETRI_TRANSITIONS=221} [2024-06-28 01:23:00,537 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 100 predicate places. [2024-06-28 01:23:00,537 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 221 transitions, 2176 flow [2024-06-28 01:23:00,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:00,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:00,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:00,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:23:00,538 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:00,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:00,538 INFO L85 PathProgramCache]: Analyzing trace with hash 826358941, now seen corresponding path program 6 times [2024-06-28 01:23:00,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:00,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893351027] [2024-06-28 01:23:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:00,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:01,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:01,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893351027] [2024-06-28 01:23:01,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893351027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:01,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:01,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:01,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978423655] [2024-06-28 01:23:01,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:01,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:01,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:01,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:01,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:01,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:01,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 221 transitions, 2176 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:01,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:01,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:01,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:02,764 INFO L124 PetriNetUnfolderBase]: 5420/8566 cut-off events. [2024-06-28 01:23:02,764 INFO L125 PetriNetUnfolderBase]: For 204459/204459 co-relation queries the response was YES. [2024-06-28 01:23:02,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48661 conditions, 8566 events. 5420/8566 cut-off events. For 204459/204459 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 54000 event pairs, 1854 based on Foata normal form. 2/8413 useless extension candidates. Maximal degree in co-relation 48596. Up to 7589 conditions per place. [2024-06-28 01:23:02,847 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 220 selfloop transitions, 28 changer transitions 0/259 dead transitions. [2024-06-28 01:23:02,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 259 transitions, 2809 flow [2024-06-28 01:23:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-28 01:23:02,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-28 01:23:02,849 INFO L175 Difference]: Start difference. First operand has 155 places, 221 transitions, 2176 flow. Second operand 9 states and 207 transitions. [2024-06-28 01:23:02,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 259 transitions, 2809 flow [2024-06-28 01:23:03,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 259 transitions, 2677 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:03,107 INFO L231 Difference]: Finished difference. Result has 157 places, 221 transitions, 2110 flow [2024-06-28 01:23:03,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2110, PETRI_PLACES=157, PETRI_TRANSITIONS=221} [2024-06-28 01:23:03,108 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 102 predicate places. [2024-06-28 01:23:03,108 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 221 transitions, 2110 flow [2024-06-28 01:23:03,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:03,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:03,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:03,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:23:03,109 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:03,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:03,109 INFO L85 PathProgramCache]: Analyzing trace with hash -568091084, now seen corresponding path program 5 times [2024-06-28 01:23:03,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:03,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437228249] [2024-06-28 01:23:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:03,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:03,846 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 01:23:03,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:03,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437228249] [2024-06-28 01:23:03,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437228249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:03,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:03,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:03,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056344824] [2024-06-28 01:23:03,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:03,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:03,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:03,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:03,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:03,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:03,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 221 transitions, 2110 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:03,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:03,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:03,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:05,512 INFO L124 PetriNetUnfolderBase]: 5633/8899 cut-off events. [2024-06-28 01:23:05,512 INFO L125 PetriNetUnfolderBase]: For 213865/213869 co-relation queries the response was YES. [2024-06-28 01:23:05,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49898 conditions, 8899 events. 5633/8899 cut-off events. For 213865/213869 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 56358 event pairs, 1800 based on Foata normal form. 5/8742 useless extension candidates. Maximal degree in co-relation 49832. Up to 7501 conditions per place. [2024-06-28 01:23:05,617 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 203 selfloop transitions, 91 changer transitions 0/305 dead transitions. [2024-06-28 01:23:05,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 305 transitions, 3135 flow [2024-06-28 01:23:05,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:05,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:23:05,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528344671201814 [2024-06-28 01:23:05,619 INFO L175 Difference]: Start difference. First operand has 157 places, 221 transitions, 2110 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:23:05,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 305 transitions, 3135 flow [2024-06-28 01:23:05,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 305 transitions, 3043 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:05,942 INFO L231 Difference]: Finished difference. Result has 159 places, 251 transitions, 2516 flow [2024-06-28 01:23:05,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2516, PETRI_PLACES=159, PETRI_TRANSITIONS=251} [2024-06-28 01:23:05,943 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 104 predicate places. [2024-06-28 01:23:05,943 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 251 transitions, 2516 flow [2024-06-28 01:23:05,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:05,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:05,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:05,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:23:05,943 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:05,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash -6335836, now seen corresponding path program 1 times [2024-06-28 01:23:05,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:05,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960294265] [2024-06-28 01:23:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:05,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:06,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:06,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960294265] [2024-06-28 01:23:06,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960294265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:06,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:06,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:23:06,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719103739] [2024-06-28 01:23:06,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:06,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:23:06,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:06,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:23:06,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:23:06,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:06,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 251 transitions, 2516 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 01:23:06,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:06,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:06,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:08,175 INFO L124 PetriNetUnfolderBase]: 6277/9988 cut-off events. [2024-06-28 01:23:08,175 INFO L125 PetriNetUnfolderBase]: For 256077/256149 co-relation queries the response was YES. [2024-06-28 01:23:08,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56147 conditions, 9988 events. 6277/9988 cut-off events. For 256077/256149 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 64474 event pairs, 2427 based on Foata normal form. 14/9808 useless extension candidates. Maximal degree in co-relation 56078. Up to 8766 conditions per place. [2024-06-28 01:23:08,293 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 191 selfloop transitions, 15 changer transitions 0/275 dead transitions. [2024-06-28 01:23:08,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 275 transitions, 3042 flow [2024-06-28 01:23:08,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:23:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:23:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:23:08,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48639455782312924 [2024-06-28 01:23:08,294 INFO L175 Difference]: Start difference. First operand has 159 places, 251 transitions, 2516 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:23:08,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 275 transitions, 3042 flow [2024-06-28 01:23:08,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 275 transitions, 2953 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:08,549 INFO L231 Difference]: Finished difference. Result has 161 places, 254 transitions, 2497 flow [2024-06-28 01:23:08,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2427, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2497, PETRI_PLACES=161, PETRI_TRANSITIONS=254} [2024-06-28 01:23:08,550 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 106 predicate places. [2024-06-28 01:23:08,550 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 254 transitions, 2497 flow [2024-06-28 01:23:08,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 01:23:08,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:08,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:08,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:23:08,550 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:08,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:08,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2122426069, now seen corresponding path program 1 times [2024-06-28 01:23:08,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:08,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946111514] [2024-06-28 01:23:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:08,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:09,966 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 01:23:09,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:09,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946111514] [2024-06-28 01:23:09,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946111514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:09,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:09,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:09,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045738105] [2024-06-28 01:23:09,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:09,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:09,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:09,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:09,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:10,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:23:10,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 254 transitions, 2497 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 01:23:10,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:10,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:23:10,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:11,941 INFO L124 PetriNetUnfolderBase]: 5463/8721 cut-off events. [2024-06-28 01:23:11,941 INFO L125 PetriNetUnfolderBase]: For 244152/244232 co-relation queries the response was YES. [2024-06-28 01:23:11,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53248 conditions, 8721 events. 5463/8721 cut-off events. For 244152/244232 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 56012 event pairs, 1275 based on Foata normal form. 20/8569 useless extension candidates. Maximal degree in co-relation 53177. Up to 7330 conditions per place. [2024-06-28 01:23:12,024 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 246 selfloop transitions, 54 changer transitions 0/331 dead transitions. [2024-06-28 01:23:12,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 331 transitions, 3677 flow [2024-06-28 01:23:12,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:12,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-06-28 01:23:12,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5250463821892394 [2024-06-28 01:23:12,026 INFO L175 Difference]: Start difference. First operand has 161 places, 254 transitions, 2497 flow. Second operand 11 states and 283 transitions. [2024-06-28 01:23:12,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 331 transitions, 3677 flow [2024-06-28 01:23:12,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 331 transitions, 3629 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:12,263 INFO L231 Difference]: Finished difference. Result has 169 places, 259 transitions, 2708 flow [2024-06-28 01:23:12,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2708, PETRI_PLACES=169, PETRI_TRANSITIONS=259} [2024-06-28 01:23:12,263 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 114 predicate places. [2024-06-28 01:23:12,263 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 259 transitions, 2708 flow [2024-06-28 01:23:12,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 01:23:12,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:12,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:12,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:23:12,264 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:12,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:12,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1205972151, now seen corresponding path program 1 times [2024-06-28 01:23:12,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:12,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259464389] [2024-06-28 01:23:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:12,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:13,609 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 01:23:13,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:13,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259464389] [2024-06-28 01:23:13,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259464389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:13,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:13,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:13,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953605491] [2024-06-28 01:23:13,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:13,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:13,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:13,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:13,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:13,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:13,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 259 transitions, 2708 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:13,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:13,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:13,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:15,582 INFO L124 PetriNetUnfolderBase]: 5772/9035 cut-off events. [2024-06-28 01:23:15,582 INFO L125 PetriNetUnfolderBase]: For 263445/263449 co-relation queries the response was YES. [2024-06-28 01:23:15,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56736 conditions, 9035 events. 5772/9035 cut-off events. For 263445/263449 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 56497 event pairs, 1654 based on Foata normal form. 6/8895 useless extension candidates. Maximal degree in co-relation 56663. Up to 7917 conditions per place. [2024-06-28 01:23:15,675 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 269 selfloop transitions, 58 changer transitions 0/338 dead transitions. [2024-06-28 01:23:15,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 338 transitions, 4012 flow [2024-06-28 01:23:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 274 transitions. [2024-06-28 01:23:15,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083487940630798 [2024-06-28 01:23:15,676 INFO L175 Difference]: Start difference. First operand has 169 places, 259 transitions, 2708 flow. Second operand 11 states and 274 transitions. [2024-06-28 01:23:15,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 338 transitions, 4012 flow [2024-06-28 01:23:15,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 338 transitions, 3872 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:15,967 INFO L231 Difference]: Finished difference. Result has 174 places, 268 transitions, 2910 flow [2024-06-28 01:23:15,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2568, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2910, PETRI_PLACES=174, PETRI_TRANSITIONS=268} [2024-06-28 01:23:15,968 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 119 predicate places. [2024-06-28 01:23:15,968 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 268 transitions, 2910 flow [2024-06-28 01:23:15,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:15,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:15,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:15,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:23:15,969 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:15,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:15,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2122365619, now seen corresponding path program 2 times [2024-06-28 01:23:15,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:15,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854701188] [2024-06-28 01:23:15,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:15,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:17,368 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 01:23:17,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:17,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854701188] [2024-06-28 01:23:17,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854701188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:17,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:17,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:17,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47418756] [2024-06-28 01:23:17,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:17,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:17,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:17,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:17,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:23:17,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 268 transitions, 2910 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 01:23:17,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:17,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:23:17,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:19,207 INFO L124 PetriNetUnfolderBase]: 5557/8863 cut-off events. [2024-06-28 01:23:19,207 INFO L125 PetriNetUnfolderBase]: For 281581/281677 co-relation queries the response was YES. [2024-06-28 01:23:19,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56487 conditions, 8863 events. 5557/8863 cut-off events. For 281581/281677 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 57060 event pairs, 1587 based on Foata normal form. 24/8715 useless extension candidates. Maximal degree in co-relation 56411. Up to 7553 conditions per place. [2024-06-28 01:23:19,313 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 254 selfloop transitions, 51 changer transitions 0/339 dead transitions. [2024-06-28 01:23:19,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 339 transitions, 3878 flow [2024-06-28 01:23:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:19,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-06-28 01:23:19,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5194805194805194 [2024-06-28 01:23:19,314 INFO L175 Difference]: Start difference. First operand has 174 places, 268 transitions, 2910 flow. Second operand 11 states and 280 transitions. [2024-06-28 01:23:19,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 339 transitions, 3878 flow [2024-06-28 01:23:19,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 339 transitions, 3719 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:19,623 INFO L231 Difference]: Finished difference. Result has 179 places, 270 transitions, 2904 flow [2024-06-28 01:23:19,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2904, PETRI_PLACES=179, PETRI_TRANSITIONS=270} [2024-06-28 01:23:19,624 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 124 predicate places. [2024-06-28 01:23:19,624 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 270 transitions, 2904 flow [2024-06-28 01:23:19,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 01:23:19,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:19,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:19,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:23:19,624 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:19,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:19,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2119568985, now seen corresponding path program 2 times [2024-06-28 01:23:19,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:19,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252810616] [2024-06-28 01:23:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:19,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:21,205 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 01:23:21,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:21,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252810616] [2024-06-28 01:23:21,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252810616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:21,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:21,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:21,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613772383] [2024-06-28 01:23:21,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:21,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:21,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:21,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:21,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:21,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:21,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 270 transitions, 2904 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:21,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:21,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:21,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:23,236 INFO L124 PetriNetUnfolderBase]: 5809/9128 cut-off events. [2024-06-28 01:23:23,236 INFO L125 PetriNetUnfolderBase]: For 289506/289510 co-relation queries the response was YES. [2024-06-28 01:23:23,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58528 conditions, 9128 events. 5809/9128 cut-off events. For 289506/289510 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 57567 event pairs, 1690 based on Foata normal form. 6/8976 useless extension candidates. Maximal degree in co-relation 58450. Up to 8054 conditions per place. [2024-06-28 01:23:23,318 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 295 selfloop transitions, 34 changer transitions 0/340 dead transitions. [2024-06-28 01:23:23,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 340 transitions, 3950 flow [2024-06-28 01:23:23,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:23,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-28 01:23:23,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081632653061224 [2024-06-28 01:23:23,320 INFO L175 Difference]: Start difference. First operand has 179 places, 270 transitions, 2904 flow. Second operand 10 states and 249 transitions. [2024-06-28 01:23:23,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 340 transitions, 3950 flow [2024-06-28 01:23:23,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 340 transitions, 3751 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:23,586 INFO L231 Difference]: Finished difference. Result has 181 places, 276 transitions, 2884 flow [2024-06-28 01:23:23,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2884, PETRI_PLACES=181, PETRI_TRANSITIONS=276} [2024-06-28 01:23:23,586 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 126 predicate places. [2024-06-28 01:23:23,587 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 276 transitions, 2884 flow [2024-06-28 01:23:23,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:23,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:23,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:23,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:23:23,587 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:23,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:23,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1203175765, now seen corresponding path program 3 times [2024-06-28 01:23:23,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:23,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429256537] [2024-06-28 01:23:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:23,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:24,907 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 01:23:24,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:24,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429256537] [2024-06-28 01:23:24,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429256537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:24,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:24,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:24,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848284977] [2024-06-28 01:23:24,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:24,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:24,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:24,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:24,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:25,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:23:25,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 276 transitions, 2884 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 01:23:25,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:25,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:23:25,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:26,714 INFO L124 PetriNetUnfolderBase]: 5561/8897 cut-off events. [2024-06-28 01:23:26,714 INFO L125 PetriNetUnfolderBase]: For 297547/297633 co-relation queries the response was YES. [2024-06-28 01:23:26,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56649 conditions, 8897 events. 5561/8897 cut-off events. For 297547/297633 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 57605 event pairs, 1616 based on Foata normal form. 30/8745 useless extension candidates. Maximal degree in co-relation 56569. Up to 7618 conditions per place. [2024-06-28 01:23:26,806 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 270 selfloop transitions, 30 changer transitions 0/335 dead transitions. [2024-06-28 01:23:26,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 335 transitions, 3794 flow [2024-06-28 01:23:26,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:26,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:26,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:23:26,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528344671201814 [2024-06-28 01:23:26,808 INFO L175 Difference]: Start difference. First operand has 181 places, 276 transitions, 2884 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:23:26,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 335 transitions, 3794 flow [2024-06-28 01:23:27,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 335 transitions, 3659 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:27,132 INFO L231 Difference]: Finished difference. Result has 183 places, 278 transitions, 2864 flow [2024-06-28 01:23:27,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2777, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2864, PETRI_PLACES=183, PETRI_TRANSITIONS=278} [2024-06-28 01:23:27,133 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 128 predicate places. [2024-06-28 01:23:27,133 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 278 transitions, 2864 flow [2024-06-28 01:23:27,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 01:23:27,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:27,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:27,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:23:27,134 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:27,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:27,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1203170805, now seen corresponding path program 1 times [2024-06-28 01:23:27,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:27,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770010935] [2024-06-28 01:23:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:27,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:28,296 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 01:23:28,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:28,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770010935] [2024-06-28 01:23:28,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770010935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:28,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:28,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:28,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120693114] [2024-06-28 01:23:28,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:28,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:28,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:28,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:28,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:28,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:28,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 278 transitions, 2864 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:28,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:28,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:28,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:29,949 INFO L124 PetriNetUnfolderBase]: 5943/9375 cut-off events. [2024-06-28 01:23:29,950 INFO L125 PetriNetUnfolderBase]: For 310675/310679 co-relation queries the response was YES. [2024-06-28 01:23:30,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59845 conditions, 9375 events. 5943/9375 cut-off events. For 310675/310679 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 59483 event pairs, 1715 based on Foata normal form. 8/9210 useless extension candidates. Maximal degree in co-relation 59764. Up to 8278 conditions per place. [2024-06-28 01:23:30,048 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 304 selfloop transitions, 28 changer transitions 0/343 dead transitions. [2024-06-28 01:23:30,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 343 transitions, 3958 flow [2024-06-28 01:23:30,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:30,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-28 01:23:30,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816326530612245 [2024-06-28 01:23:30,049 INFO L175 Difference]: Start difference. First operand has 183 places, 278 transitions, 2864 flow. Second operand 10 states and 236 transitions. [2024-06-28 01:23:30,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 343 transitions, 3958 flow [2024-06-28 01:23:30,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 343 transitions, 3883 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:30,317 INFO L231 Difference]: Finished difference. Result has 189 places, 290 transitions, 3067 flow [2024-06-28 01:23:30,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3067, PETRI_PLACES=189, PETRI_TRANSITIONS=290} [2024-06-28 01:23:30,317 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 134 predicate places. [2024-06-28 01:23:30,317 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 290 transitions, 3067 flow [2024-06-28 01:23:30,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:30,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:30,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:30,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:23:30,318 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:30,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:30,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1087884471, now seen corresponding path program 3 times [2024-06-28 01:23:30,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:30,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177273280] [2024-06-28 01:23:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:30,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:31,641 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 01:23:31,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:31,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177273280] [2024-06-28 01:23:31,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177273280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:31,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:31,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:31,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430605910] [2024-06-28 01:23:31,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:31,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:31,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:31,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:31,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:31,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:31,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 290 transitions, 3067 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:31,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:31,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:31,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:33,412 INFO L124 PetriNetUnfolderBase]: 5961/9298 cut-off events. [2024-06-28 01:23:33,412 INFO L125 PetriNetUnfolderBase]: For 328776/328784 co-relation queries the response was YES. [2024-06-28 01:23:33,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61425 conditions, 9298 events. 5961/9298 cut-off events. For 328776/328784 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 58067 event pairs, 1492 based on Foata normal form. 7/9149 useless extension candidates. Maximal degree in co-relation 61340. Up to 7808 conditions per place. [2024-06-28 01:23:33,540 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 244 selfloop transitions, 105 changer transitions 0/360 dead transitions. [2024-06-28 01:23:33,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 360 transitions, 4361 flow [2024-06-28 01:23:33,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:33,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-28 01:23:33,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244897959183673 [2024-06-28 01:23:33,542 INFO L175 Difference]: Start difference. First operand has 189 places, 290 transitions, 3067 flow. Second operand 10 states and 257 transitions. [2024-06-28 01:23:33,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 360 transitions, 4361 flow [2024-06-28 01:23:33,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 360 transitions, 4233 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:33,967 INFO L231 Difference]: Finished difference. Result has 194 places, 296 transitions, 3308 flow [2024-06-28 01:23:33,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3308, PETRI_PLACES=194, PETRI_TRANSITIONS=296} [2024-06-28 01:23:33,967 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 139 predicate places. [2024-06-28 01:23:33,967 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 296 transitions, 3308 flow [2024-06-28 01:23:33,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:33,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:33,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:33,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:23:33,968 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:33,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:33,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1087884595, now seen corresponding path program 4 times [2024-06-28 01:23:33,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:33,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101125968] [2024-06-28 01:23:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:35,314 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 01:23:35,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:35,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101125968] [2024-06-28 01:23:35,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101125968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:35,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:35,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:35,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651104668] [2024-06-28 01:23:35,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:35,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:35,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:35,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:35,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:35,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:23:35,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 296 transitions, 3308 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 01:23:35,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:35,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:23:35,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:37,046 INFO L124 PetriNetUnfolderBase]: 5728/9105 cut-off events. [2024-06-28 01:23:37,046 INFO L125 PetriNetUnfolderBase]: For 349938/349994 co-relation queries the response was YES. [2024-06-28 01:23:37,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61096 conditions, 9105 events. 5728/9105 cut-off events. For 349938/349994 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 58451 event pairs, 1410 based on Foata normal form. 28/8959 useless extension candidates. Maximal degree in co-relation 61010. Up to 7652 conditions per place. [2024-06-28 01:23:37,163 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 261 selfloop transitions, 57 changer transitions 0/356 dead transitions. [2024-06-28 01:23:37,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 356 transitions, 4298 flow [2024-06-28 01:23:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:37,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 01:23:37,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-28 01:23:37,165 INFO L175 Difference]: Start difference. First operand has 194 places, 296 transitions, 3308 flow. Second operand 9 states and 234 transitions. [2024-06-28 01:23:37,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 356 transitions, 4298 flow [2024-06-28 01:23:37,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 356 transitions, 4087 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:37,569 INFO L231 Difference]: Finished difference. Result has 197 places, 298 transitions, 3288 flow [2024-06-28 01:23:37,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3288, PETRI_PLACES=197, PETRI_TRANSITIONS=298} [2024-06-28 01:23:37,570 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 142 predicate places. [2024-06-28 01:23:37,570 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 298 transitions, 3288 flow [2024-06-28 01:23:37,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 01:23:37,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:37,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:37,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:23:37,570 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:37,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:37,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1087706841, now seen corresponding path program 4 times [2024-06-28 01:23:37,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:37,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451883216] [2024-06-28 01:23:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:37,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:38,979 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 01:23:38,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:38,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451883216] [2024-06-28 01:23:38,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451883216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:38,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:38,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:38,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552495495] [2024-06-28 01:23:38,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:38,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:38,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:38,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:39,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:39,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 298 transitions, 3288 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:39,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:39,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:39,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:40,684 INFO L124 PetriNetUnfolderBase]: 5993/9338 cut-off events. [2024-06-28 01:23:40,685 INFO L125 PetriNetUnfolderBase]: For 362860/362868 co-relation queries the response was YES. [2024-06-28 01:23:40,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63709 conditions, 9338 events. 5993/9338 cut-off events. For 362860/362868 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 58345 event pairs, 1492 based on Foata normal form. 7/9189 useless extension candidates. Maximal degree in co-relation 63621. Up to 7901 conditions per place. [2024-06-28 01:23:40,805 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 245 selfloop transitions, 99 changer transitions 0/355 dead transitions. [2024-06-28 01:23:40,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 355 transitions, 4262 flow [2024-06-28 01:23:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 01:23:40,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192743764172335 [2024-06-28 01:23:40,806 INFO L175 Difference]: Start difference. First operand has 197 places, 298 transitions, 3288 flow. Second operand 9 states and 229 transitions. [2024-06-28 01:23:40,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 355 transitions, 4262 flow [2024-06-28 01:23:41,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 355 transitions, 4055 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:41,404 INFO L231 Difference]: Finished difference. Result has 199 places, 298 transitions, 3287 flow [2024-06-28 01:23:41,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3287, PETRI_PLACES=199, PETRI_TRANSITIONS=298} [2024-06-28 01:23:41,405 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 144 predicate places. [2024-06-28 01:23:41,405 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 298 transitions, 3287 flow [2024-06-28 01:23:41,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:41,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:41,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:41,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:23:41,406 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:41,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:41,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1087700145, now seen corresponding path program 2 times [2024-06-28 01:23:41,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:41,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495539029] [2024-06-28 01:23:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:41,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:42,482 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 01:23:42,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:42,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495539029] [2024-06-28 01:23:42,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495539029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:42,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:42,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:42,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584225245] [2024-06-28 01:23:42,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:42,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:42,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:42,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:42,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:42,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:42,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 298 transitions, 3287 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:42,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:42,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:42,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:44,428 INFO L124 PetriNetUnfolderBase]: 6140/9606 cut-off events. [2024-06-28 01:23:44,428 INFO L125 PetriNetUnfolderBase]: For 388791/388799 co-relation queries the response was YES. [2024-06-28 01:23:44,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66068 conditions, 9606 events. 6140/9606 cut-off events. For 388791/388799 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 60371 event pairs, 1469 based on Foata normal form. 9/9445 useless extension candidates. Maximal degree in co-relation 65979. Up to 7485 conditions per place. [2024-06-28 01:23:44,536 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 238 selfloop transitions, 126 changer transitions 0/375 dead transitions. [2024-06-28 01:23:44,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 375 transitions, 4923 flow [2024-06-28 01:23:44,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-28 01:23:44,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419501133786848 [2024-06-28 01:23:44,537 INFO L175 Difference]: Start difference. First operand has 199 places, 298 transitions, 3287 flow. Second operand 9 states and 239 transitions. [2024-06-28 01:23:44,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 375 transitions, 4923 flow [2024-06-28 01:23:44,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 375 transitions, 4717 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:44,933 INFO L231 Difference]: Finished difference. Result has 200 places, 307 transitions, 3591 flow [2024-06-28 01:23:44,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3591, PETRI_PLACES=200, PETRI_TRANSITIONS=307} [2024-06-28 01:23:44,934 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 145 predicate places. [2024-06-28 01:23:44,934 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 307 transitions, 3591 flow [2024-06-28 01:23:44,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:44,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:44,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:44,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:23:44,934 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:44,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:44,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1087879635, now seen corresponding path program 3 times [2024-06-28 01:23:44,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:44,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219297150] [2024-06-28 01:23:44,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:44,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:45,991 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 01:23:45,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:45,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219297150] [2024-06-28 01:23:45,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219297150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:45,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:45,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:45,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120334458] [2024-06-28 01:23:45,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:45,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:45,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:45,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:45,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:46,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:46,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 307 transitions, 3591 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:46,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:46,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:46,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:47,992 INFO L124 PetriNetUnfolderBase]: 6242/9774 cut-off events. [2024-06-28 01:23:47,992 INFO L125 PetriNetUnfolderBase]: For 422794/422802 co-relation queries the response was YES. [2024-06-28 01:23:48,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69199 conditions, 9774 events. 6242/9774 cut-off events. For 422794/422802 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 61606 event pairs, 1486 based on Foata normal form. 9/9609 useless extension candidates. Maximal degree in co-relation 69109. Up to 7571 conditions per place. [2024-06-28 01:23:48,128 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 241 selfloop transitions, 129 changer transitions 0/381 dead transitions. [2024-06-28 01:23:48,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 381 transitions, 5329 flow [2024-06-28 01:23:48,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:48,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-28 01:23:48,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532879818594104 [2024-06-28 01:23:48,133 INFO L175 Difference]: Start difference. First operand has 200 places, 307 transitions, 3591 flow. Second operand 9 states and 244 transitions. [2024-06-28 01:23:48,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 381 transitions, 5329 flow [2024-06-28 01:23:48,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 381 transitions, 5102 flow, removed 80 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:48,674 INFO L231 Difference]: Finished difference. Result has 205 places, 313 transitions, 3802 flow [2024-06-28 01:23:48,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3420, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3802, PETRI_PLACES=205, PETRI_TRANSITIONS=313} [2024-06-28 01:23:48,675 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 150 predicate places. [2024-06-28 01:23:48,675 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 313 transitions, 3802 flow [2024-06-28 01:23:48,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:48,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:48,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:48,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:23:48,676 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:48,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:48,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2004099999, now seen corresponding path program 4 times [2024-06-28 01:23:48,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:48,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390215456] [2024-06-28 01:23:48,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:48,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:49,832 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 01:23:49,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:49,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390215456] [2024-06-28 01:23:49,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390215456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:49,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:49,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:49,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034981452] [2024-06-28 01:23:49,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:49,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:49,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:49,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:49,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:49,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:49,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 313 transitions, 3802 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:49,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:49,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:49,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:51,749 INFO L124 PetriNetUnfolderBase]: 6232/9745 cut-off events. [2024-06-28 01:23:51,750 INFO L125 PetriNetUnfolderBase]: For 422955/422963 co-relation queries the response was YES. [2024-06-28 01:23:51,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68987 conditions, 9745 events. 6232/9745 cut-off events. For 422955/422963 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 61350 event pairs, 1466 based on Foata normal form. 9/9584 useless extension candidates. Maximal degree in co-relation 68895. Up to 7563 conditions per place. [2024-06-28 01:23:51,860 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 242 selfloop transitions, 129 changer transitions 0/382 dead transitions. [2024-06-28 01:23:51,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 382 transitions, 5234 flow [2024-06-28 01:23:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:51,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-28 01:23:51,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546485260770975 [2024-06-28 01:23:51,861 INFO L175 Difference]: Start difference. First operand has 205 places, 313 transitions, 3802 flow. Second operand 9 states and 241 transitions. [2024-06-28 01:23:51,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 382 transitions, 5234 flow [2024-06-28 01:23:52,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 382 transitions, 4967 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:52,424 INFO L231 Difference]: Finished difference. Result has 209 places, 313 transitions, 3801 flow [2024-06-28 01:23:52,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3535, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3801, PETRI_PLACES=209, PETRI_TRANSITIONS=313} [2024-06-28 01:23:52,425 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 154 predicate places. [2024-06-28 01:23:52,425 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 313 transitions, 3801 flow [2024-06-28 01:23:52,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:52,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:52,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:52,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:23:52,425 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:52,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:52,425 INFO L85 PathProgramCache]: Analyzing trace with hash -653971863, now seen corresponding path program 1 times [2024-06-28 01:23:52,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:52,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260402693] [2024-06-28 01:23:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:52,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:53,167 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 01:23:53,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:53,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260402693] [2024-06-28 01:23:53,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260402693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:53,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:53,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:23:53,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265324038] [2024-06-28 01:23:53,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:53,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:23:53,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:53,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:23:53,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:23:53,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:53,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 313 transitions, 3801 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 01:23:53,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:53,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:53,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:55,059 INFO L124 PetriNetUnfolderBase]: 7017/11247 cut-off events. [2024-06-28 01:23:55,060 INFO L125 PetriNetUnfolderBase]: For 491962/492037 co-relation queries the response was YES. [2024-06-28 01:23:55,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74692 conditions, 11247 events. 7017/11247 cut-off events. For 491962/492037 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 74453 event pairs, 2093 based on Foata normal form. 22/10991 useless extension candidates. Maximal degree in co-relation 74599. Up to 9672 conditions per place. [2024-06-28 01:23:55,197 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 246 selfloop transitions, 29 changer transitions 0/351 dead transitions. [2024-06-28 01:23:55,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 351 transitions, 4691 flow [2024-06-28 01:23:55,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:23:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:23:55,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 01:23:55,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068027210884354 [2024-06-28 01:23:55,198 INFO L175 Difference]: Start difference. First operand has 209 places, 313 transitions, 3801 flow. Second operand 6 states and 149 transitions. [2024-06-28 01:23:55,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 351 transitions, 4691 flow [2024-06-28 01:23:55,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 351 transitions, 4456 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:55,832 INFO L231 Difference]: Finished difference. Result has 209 places, 323 transitions, 3774 flow [2024-06-28 01:23:55,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3566, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3774, PETRI_PLACES=209, PETRI_TRANSITIONS=323} [2024-06-28 01:23:55,833 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 154 predicate places. [2024-06-28 01:23:55,833 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 323 transitions, 3774 flow [2024-06-28 01:23:55,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 01:23:55,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:55,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:55,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:23:55,834 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:55,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:55,834 INFO L85 PathProgramCache]: Analyzing trace with hash 317002849, now seen corresponding path program 5 times [2024-06-28 01:23:55,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:55,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238738428] [2024-06-28 01:23:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:55,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:56,900 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 01:23:56,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:56,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238738428] [2024-06-28 01:23:56,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238738428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:56,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:56,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:56,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122498817] [2024-06-28 01:23:56,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:56,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:56,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:56,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:56,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:57,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:57,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 323 transitions, 3774 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:57,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:57,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:57,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:58,911 INFO L124 PetriNetUnfolderBase]: 6358/9994 cut-off events. [2024-06-28 01:23:58,912 INFO L125 PetriNetUnfolderBase]: For 461985/462005 co-relation queries the response was YES. [2024-06-28 01:23:58,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71176 conditions, 9994 events. 6358/9994 cut-off events. For 461985/462005 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 63798 event pairs, 1797 based on Foata normal form. 4/9809 useless extension candidates. Maximal degree in co-relation 71081. Up to 8406 conditions per place. [2024-06-28 01:23:59,025 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 294 selfloop transitions, 76 changer transitions 0/384 dead transitions. [2024-06-28 01:23:59,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 384 transitions, 5064 flow [2024-06-28 01:23:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-28 01:23:59,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959183673469388 [2024-06-28 01:23:59,026 INFO L175 Difference]: Start difference. First operand has 209 places, 323 transitions, 3774 flow. Second operand 10 states and 243 transitions. [2024-06-28 01:23:59,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 384 transitions, 5064 flow [2024-06-28 01:23:59,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 384 transitions, 5018 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-28 01:23:59,492 INFO L231 Difference]: Finished difference. Result has 218 places, 326 transitions, 3972 flow [2024-06-28 01:23:59,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3728, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3972, PETRI_PLACES=218, PETRI_TRANSITIONS=326} [2024-06-28 01:23:59,492 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 163 predicate places. [2024-06-28 01:23:59,492 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 326 transitions, 3972 flow [2024-06-28 01:23:59,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:59,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:59,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:59,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:23:59,493 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:59,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:59,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1609606645, now seen corresponding path program 6 times [2024-06-28 01:23:59,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:59,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196896881] [2024-06-28 01:23:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:59,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:00,462 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 01:24:00,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:00,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196896881] [2024-06-28 01:24:00,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196896881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:00,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:00,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:00,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378788014] [2024-06-28 01:24:00,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:00,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:00,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:00,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:00,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:00,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:00,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 326 transitions, 3972 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:00,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:00,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:00,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:02,507 INFO L124 PetriNetUnfolderBase]: 6516/10246 cut-off events. [2024-06-28 01:24:02,507 INFO L125 PetriNetUnfolderBase]: For 501393/501405 co-relation queries the response was YES. [2024-06-28 01:24:02,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74684 conditions, 10246 events. 6516/10246 cut-off events. For 501393/501405 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 65751 event pairs, 1811 based on Foata normal form. 4/10054 useless extension candidates. Maximal degree in co-relation 74586. Up to 8821 conditions per place. [2024-06-28 01:24:02,626 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 334 selfloop transitions, 49 changer transitions 0/397 dead transitions. [2024-06-28 01:24:02,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 397 transitions, 5674 flow [2024-06-28 01:24:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:02,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:24:02,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-28 01:24:02,628 INFO L175 Difference]: Start difference. First operand has 218 places, 326 transitions, 3972 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:24:02,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 397 transitions, 5674 flow [2024-06-28 01:24:03,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 397 transitions, 5344 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:03,209 INFO L231 Difference]: Finished difference. Result has 219 places, 335 transitions, 4026 flow [2024-06-28 01:24:03,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4026, PETRI_PLACES=219, PETRI_TRANSITIONS=335} [2024-06-28 01:24:03,210 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 164 predicate places. [2024-06-28 01:24:03,210 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 335 transitions, 4026 flow [2024-06-28 01:24:03,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:03,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:03,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:03,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:24:03,211 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:03,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:03,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1865397751, now seen corresponding path program 5 times [2024-06-28 01:24:03,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:03,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868868254] [2024-06-28 01:24:03,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:03,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:04,469 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 01:24:04,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:04,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868868254] [2024-06-28 01:24:04,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868868254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:04,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:04,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:04,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862606385] [2024-06-28 01:24:04,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:04,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:04,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:04,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:04,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 335 transitions, 4026 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:04,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:04,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:04,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:06,829 INFO L124 PetriNetUnfolderBase]: 6549/10289 cut-off events. [2024-06-28 01:24:06,829 INFO L125 PetriNetUnfolderBase]: For 500800/500812 co-relation queries the response was YES. [2024-06-28 01:24:06,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74452 conditions, 10289 events. 6549/10289 cut-off events. For 500800/500812 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 66103 event pairs, 1803 based on Foata normal form. 2/10094 useless extension candidates. Maximal degree in co-relation 74353. Up to 8964 conditions per place. [2024-06-28 01:24:06,960 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 329 selfloop transitions, 59 changer transitions 0/402 dead transitions. [2024-06-28 01:24:06,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 402 transitions, 5443 flow [2024-06-28 01:24:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:06,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:06,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-28 01:24:06,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2024-06-28 01:24:06,961 INFO L175 Difference]: Start difference. First operand has 219 places, 335 transitions, 4026 flow. Second operand 10 states and 248 transitions. [2024-06-28 01:24:06,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 402 transitions, 5443 flow [2024-06-28 01:24:07,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 402 transitions, 5344 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-28 01:24:07,433 INFO L231 Difference]: Finished difference. Result has 226 places, 344 transitions, 4254 flow [2024-06-28 01:24:07,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3927, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4254, PETRI_PLACES=226, PETRI_TRANSITIONS=344} [2024-06-28 01:24:07,434 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 171 predicate places. [2024-06-28 01:24:07,434 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 344 transitions, 4254 flow [2024-06-28 01:24:07,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:07,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:07,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:07,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:24:07,434 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:07,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:07,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1600438705, now seen corresponding path program 7 times [2024-06-28 01:24:07,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:07,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439188156] [2024-06-28 01:24:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:07,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:08,303 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 01:24:08,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:08,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439188156] [2024-06-28 01:24:08,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439188156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:08,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:08,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:08,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002538668] [2024-06-28 01:24:08,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:08,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:08,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:08,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:08,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:08,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:08,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 344 transitions, 4254 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:08,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:08,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:08,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:10,562 INFO L124 PetriNetUnfolderBase]: 6539/10297 cut-off events. [2024-06-28 01:24:10,562 INFO L125 PetriNetUnfolderBase]: For 517666/517678 co-relation queries the response was YES. [2024-06-28 01:24:10,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75075 conditions, 10297 events. 6539/10297 cut-off events. For 517666/517678 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 66284 event pairs, 1823 based on Foata normal form. 4/10102 useless extension candidates. Maximal degree in co-relation 74973. Up to 9061 conditions per place. [2024-06-28 01:24:10,686 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 348 selfloop transitions, 30 changer transitions 0/392 dead transitions. [2024-06-28 01:24:10,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 392 transitions, 5224 flow [2024-06-28 01:24:10,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:10,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-28 01:24:10,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943310657596372 [2024-06-28 01:24:10,687 INFO L175 Difference]: Start difference. First operand has 226 places, 344 transitions, 4254 flow. Second operand 9 states and 218 transitions. [2024-06-28 01:24:10,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 392 transitions, 5224 flow [2024-06-28 01:24:11,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 392 transitions, 5008 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-28 01:24:11,310 INFO L231 Difference]: Finished difference. Result has 229 places, 344 transitions, 4108 flow [2024-06-28 01:24:11,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4038, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4108, PETRI_PLACES=229, PETRI_TRANSITIONS=344} [2024-06-28 01:24:11,311 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 174 predicate places. [2024-06-28 01:24:11,311 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 344 transitions, 4108 flow [2024-06-28 01:24:11,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:11,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:11,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:11,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:24:11,311 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:11,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:11,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1609613341, now seen corresponding path program 6 times [2024-06-28 01:24:11,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:11,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176463571] [2024-06-28 01:24:11,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:11,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:12,544 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 01:24:12,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176463571] [2024-06-28 01:24:12,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176463571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:12,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:12,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:12,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727975560] [2024-06-28 01:24:12,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:12,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:12,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:12,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:12,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:12,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:12,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 344 transitions, 4108 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:12,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:12,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:12,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:14,739 INFO L124 PetriNetUnfolderBase]: 6562/10323 cut-off events. [2024-06-28 01:24:14,739 INFO L125 PetriNetUnfolderBase]: For 525275/525287 co-relation queries the response was YES. [2024-06-28 01:24:14,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75120 conditions, 10323 events. 6562/10323 cut-off events. For 525275/525287 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 66387 event pairs, 1815 based on Foata normal form. 2/10125 useless extension candidates. Maximal degree in co-relation 75016. Up to 9152 conditions per place. [2024-06-28 01:24:14,854 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 349 selfloop transitions, 30 changer transitions 0/393 dead transitions. [2024-06-28 01:24:14,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 393 transitions, 5137 flow [2024-06-28 01:24:14,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 01:24:14,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-28 01:24:14,855 INFO L175 Difference]: Start difference. First operand has 229 places, 344 transitions, 4108 flow. Second operand 9 states and 217 transitions. [2024-06-28 01:24:14,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 393 transitions, 5137 flow [2024-06-28 01:24:15,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 393 transitions, 5058 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:15,549 INFO L231 Difference]: Finished difference. Result has 230 places, 347 transitions, 4160 flow [2024-06-28 01:24:15,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4029, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4160, PETRI_PLACES=230, PETRI_TRANSITIONS=347} [2024-06-28 01:24:15,550 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 175 predicate places. [2024-06-28 01:24:15,550 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 347 transitions, 4160 flow [2024-06-28 01:24:15,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:15,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:15,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:15,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:24:15,550 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:15,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:15,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1609613155, now seen corresponding path program 8 times [2024-06-28 01:24:15,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:15,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537208207] [2024-06-28 01:24:15,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:15,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:16,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:16,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537208207] [2024-06-28 01:24:16,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537208207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:16,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:16,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:16,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222701601] [2024-06-28 01:24:16,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:16,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:16,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:16,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:16,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:16,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 347 transitions, 4160 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:16,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:16,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:16,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:18,590 INFO L124 PetriNetUnfolderBase]: 6552/10305 cut-off events. [2024-06-28 01:24:18,590 INFO L125 PetriNetUnfolderBase]: For 538157/538169 co-relation queries the response was YES. [2024-06-28 01:24:18,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75122 conditions, 10305 events. 6552/10305 cut-off events. For 538157/538169 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 66251 event pairs, 1812 based on Foata normal form. 4/10110 useless extension candidates. Maximal degree in co-relation 75017. Up to 8883 conditions per place. [2024-06-28 01:24:18,747 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 335 selfloop transitions, 52 changer transitions 0/401 dead transitions. [2024-06-28 01:24:18,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 401 transitions, 5200 flow [2024-06-28 01:24:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 01:24:18,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056689342403629 [2024-06-28 01:24:18,748 INFO L175 Difference]: Start difference. First operand has 230 places, 347 transitions, 4160 flow. Second operand 9 states and 223 transitions. [2024-06-28 01:24:18,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 401 transitions, 5200 flow [2024-06-28 01:24:19,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 401 transitions, 5060 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:19,685 INFO L231 Difference]: Finished difference. Result has 232 places, 347 transitions, 4132 flow [2024-06-28 01:24:19,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4020, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4132, PETRI_PLACES=232, PETRI_TRANSITIONS=347} [2024-06-28 01:24:19,685 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 177 predicate places. [2024-06-28 01:24:19,685 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 347 transitions, 4132 flow [2024-06-28 01:24:19,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:19,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:19,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:19,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:24:19,686 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:19,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1865397875, now seen corresponding path program 5 times [2024-06-28 01:24:19,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:19,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468904258] [2024-06-28 01:24:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:19,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:20,929 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 01:24:20,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:20,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468904258] [2024-06-28 01:24:20,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468904258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:20,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:20,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:20,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912768810] [2024-06-28 01:24:20,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:20,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:20,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:20,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:20,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:21,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:24:21,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 347 transitions, 4132 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 01:24:21,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:21,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:24:21,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:23,009 INFO L124 PetriNetUnfolderBase]: 6259/9985 cut-off events. [2024-06-28 01:24:23,009 INFO L125 PetriNetUnfolderBase]: For 545312/545479 co-relation queries the response was YES. [2024-06-28 01:24:23,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72644 conditions, 9985 events. 6259/9985 cut-off events. For 545312/545479 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 65474 event pairs, 1700 based on Foata normal form. 46/9802 useless extension candidates. Maximal degree in co-relation 72538. Up to 8578 conditions per place. [2024-06-28 01:24:23,141 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 328 selfloop transitions, 26 changer transitions 0/398 dead transitions. [2024-06-28 01:24:23,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 398 transitions, 5148 flow [2024-06-28 01:24:23,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:23,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:23,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:24:23,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-06-28 01:24:23,143 INFO L175 Difference]: Start difference. First operand has 232 places, 347 transitions, 4132 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:24:23,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 398 transitions, 5148 flow [2024-06-28 01:24:24,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 398 transitions, 5033 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:24,026 INFO L231 Difference]: Finished difference. Result has 233 places, 349 transitions, 4154 flow [2024-06-28 01:24:24,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4017, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4154, PETRI_PLACES=233, PETRI_TRANSITIONS=349} [2024-06-28 01:24:24,026 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 178 predicate places. [2024-06-28 01:24:24,027 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 349 transitions, 4154 flow [2024-06-28 01:24:24,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 01:24:24,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:24,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:24,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:24:24,027 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:24,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:24,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1865213425, now seen corresponding path program 9 times [2024-06-28 01:24:24,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:24,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374794879] [2024-06-28 01:24:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:24,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:25,080 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 01:24:25,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:25,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374794879] [2024-06-28 01:24:25,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374794879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:25,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:25,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:25,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238468496] [2024-06-28 01:24:25,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:25,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:25,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:25,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:25,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:25,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:25,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 349 transitions, 4154 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:25,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:25,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:25,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:27,263 INFO L124 PetriNetUnfolderBase]: 6598/10375 cut-off events. [2024-06-28 01:24:27,263 INFO L125 PetriNetUnfolderBase]: For 571466/571478 co-relation queries the response was YES. [2024-06-28 01:24:27,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76277 conditions, 10375 events. 6598/10375 cut-off events. For 571466/571478 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 66748 event pairs, 1796 based on Foata normal form. 4/10181 useless extension candidates. Maximal degree in co-relation 76170. Up to 8640 conditions per place. [2024-06-28 01:24:27,408 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 325 selfloop transitions, 78 changer transitions 0/417 dead transitions. [2024-06-28 01:24:27,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 417 transitions, 5584 flow [2024-06-28 01:24:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:27,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-28 01:24:27,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49795918367346936 [2024-06-28 01:24:27,410 INFO L175 Difference]: Start difference. First operand has 233 places, 349 transitions, 4154 flow. Second operand 10 states and 244 transitions. [2024-06-28 01:24:27,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 417 transitions, 5584 flow [2024-06-28 01:24:28,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 417 transitions, 5469 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 01:24:28,173 INFO L231 Difference]: Finished difference. Result has 237 places, 352 transitions, 4279 flow [2024-06-28 01:24:28,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4039, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4279, PETRI_PLACES=237, PETRI_TRANSITIONS=352} [2024-06-28 01:24:28,174 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 182 predicate places. [2024-06-28 01:24:28,174 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 352 transitions, 4279 flow [2024-06-28 01:24:28,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:28,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:28,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:28,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:24:28,174 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:28,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:28,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1865219935, now seen corresponding path program 10 times [2024-06-28 01:24:28,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:28,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127138397] [2024-06-28 01:24:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:28,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:29,358 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 01:24:29,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:29,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127138397] [2024-06-28 01:24:29,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127138397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:29,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:29,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:29,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550173780] [2024-06-28 01:24:29,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:29,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:29,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:29,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:29,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:29,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 352 transitions, 4279 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:29,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:29,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:29,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:31,444 INFO L124 PetriNetUnfolderBase]: 6588/10371 cut-off events. [2024-06-28 01:24:31,444 INFO L125 PetriNetUnfolderBase]: For 578230/578242 co-relation queries the response was YES. [2024-06-28 01:24:31,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76289 conditions, 10371 events. 6588/10371 cut-off events. For 578230/578242 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 66837 event pairs, 1795 based on Foata normal form. 4/10173 useless extension candidates. Maximal degree in co-relation 76181. Up to 8632 conditions per place. [2024-06-28 01:24:31,607 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 325 selfloop transitions, 77 changer transitions 0/416 dead transitions. [2024-06-28 01:24:31,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 416 transitions, 5429 flow [2024-06-28 01:24:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-28 01:24:31,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49795918367346936 [2024-06-28 01:24:31,609 INFO L175 Difference]: Start difference. First operand has 237 places, 352 transitions, 4279 flow. Second operand 10 states and 244 transitions. [2024-06-28 01:24:31,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 416 transitions, 5429 flow [2024-06-28 01:24:32,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 416 transitions, 5137 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:32,695 INFO L231 Difference]: Finished difference. Result has 239 places, 352 transitions, 4149 flow [2024-06-28 01:24:32,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3987, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4149, PETRI_PLACES=239, PETRI_TRANSITIONS=352} [2024-06-28 01:24:32,695 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 184 predicate places. [2024-06-28 01:24:32,695 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 352 transitions, 4149 flow [2024-06-28 01:24:32,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:32,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:32,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:32,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:24:32,696 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:32,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:32,696 INFO L85 PathProgramCache]: Analyzing trace with hash 317175643, now seen corresponding path program 7 times [2024-06-28 01:24:32,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:32,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593615025] [2024-06-28 01:24:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:32,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:33,865 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 01:24:33,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:33,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593615025] [2024-06-28 01:24:33,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593615025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:33,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:33,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:33,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927397348] [2024-06-28 01:24:33,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:33,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:33,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:33,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:33,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:33,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:33,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 352 transitions, 4149 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:33,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:33,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:34,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:36,005 INFO L124 PetriNetUnfolderBase]: 6583/10362 cut-off events. [2024-06-28 01:24:36,005 INFO L125 PetriNetUnfolderBase]: For 582122/582134 co-relation queries the response was YES. [2024-06-28 01:24:36,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75434 conditions, 10362 events. 6583/10362 cut-off events. For 582122/582134 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 66784 event pairs, 1796 based on Foata normal form. 2/10161 useless extension candidates. Maximal degree in co-relation 75326. Up to 9065 conditions per place. [2024-06-28 01:24:36,146 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 342 selfloop transitions, 48 changer transitions 0/404 dead transitions. [2024-06-28 01:24:36,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 404 transitions, 5195 flow [2024-06-28 01:24:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:36,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:36,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 01:24:36,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2024-06-28 01:24:36,148 INFO L175 Difference]: Start difference. First operand has 239 places, 352 transitions, 4149 flow. Second operand 9 states and 222 transitions. [2024-06-28 01:24:36,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 404 transitions, 5195 flow [2024-06-28 01:24:36,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 404 transitions, 4948 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 01:24:36,839 INFO L231 Difference]: Finished difference. Result has 238 places, 352 transitions, 4006 flow [2024-06-28 01:24:36,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3902, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4006, PETRI_PLACES=238, PETRI_TRANSITIONS=352} [2024-06-28 01:24:36,840 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 183 predicate places. [2024-06-28 01:24:36,840 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 352 transitions, 4006 flow [2024-06-28 01:24:36,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:36,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:36,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:36,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:24:36,840 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:36,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:36,841 INFO L85 PathProgramCache]: Analyzing trace with hash -639716823, now seen corresponding path program 2 times [2024-06-28 01:24:36,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:36,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642473621] [2024-06-28 01:24:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:36,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:37,506 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 01:24:37,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:37,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642473621] [2024-06-28 01:24:37,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642473621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:37,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:37,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:24:37,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218149490] [2024-06-28 01:24:37,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:37,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:24:37,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:37,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:24:37,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:24:37,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:37,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 352 transitions, 4006 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 01:24:37,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:37,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:37,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:39,692 INFO L124 PetriNetUnfolderBase]: 7386/11680 cut-off events. [2024-06-28 01:24:39,693 INFO L125 PetriNetUnfolderBase]: For 669037/669181 co-relation queries the response was YES. [2024-06-28 01:24:39,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80193 conditions, 11680 events. 7386/11680 cut-off events. For 669037/669181 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 76493 event pairs, 2423 based on Foata normal form. 31/11420 useless extension candidates. Maximal degree in co-relation 80084. Up to 10272 conditions per place. [2024-06-28 01:24:39,850 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 275 selfloop transitions, 14 changer transitions 0/368 dead transitions. [2024-06-28 01:24:39,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 368 transitions, 4650 flow [2024-06-28 01:24:39,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:24:39,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:24:39,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:24:39,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-28 01:24:39,851 INFO L175 Difference]: Start difference. First operand has 238 places, 352 transitions, 4006 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:24:39,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 368 transitions, 4650 flow [2024-06-28 01:24:40,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 368 transitions, 4518 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:40,690 INFO L231 Difference]: Finished difference. Result has 236 places, 352 transitions, 3908 flow [2024-06-28 01:24:40,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3908, PETRI_PLACES=236, PETRI_TRANSITIONS=352} [2024-06-28 01:24:40,691 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 181 predicate places. [2024-06-28 01:24:40,691 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 352 transitions, 3908 flow [2024-06-28 01:24:40,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 01:24:40,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:40,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:40,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:24:40,692 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:40,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:40,692 INFO L85 PathProgramCache]: Analyzing trace with hash 158247359, now seen corresponding path program 11 times [2024-06-28 01:24:40,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:40,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246811785] [2024-06-28 01:24:40,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:40,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:41,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:41,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246811785] [2024-06-28 01:24:41,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246811785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:41,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:41,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:41,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5573437] [2024-06-28 01:24:41,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:41,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:41,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:41,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:41,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:41,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:41,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 352 transitions, 3908 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:41,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:41,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:41,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:44,245 INFO L124 PetriNetUnfolderBase]: 7052/11678 cut-off events. [2024-06-28 01:24:44,245 INFO L125 PetriNetUnfolderBase]: For 620963/620979 co-relation queries the response was YES. [2024-06-28 01:24:44,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80191 conditions, 11678 events. 7052/11678 cut-off events. For 620963/620979 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 80131 event pairs, 1769 based on Foata normal form. 6/11300 useless extension candidates. Maximal degree in co-relation 80081. Up to 9550 conditions per place. [2024-06-28 01:24:44,381 INFO L140 encePairwiseOnDemand]: 32/49 looper letters, 408 selfloop transitions, 83 changer transitions 0/505 dead transitions. [2024-06-28 01:24:44,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 505 transitions, 6789 flow [2024-06-28 01:24:44,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:24:44,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:24:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 302 transitions. [2024-06-28 01:24:44,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136054421768708 [2024-06-28 01:24:44,382 INFO L175 Difference]: Start difference. First operand has 236 places, 352 transitions, 3908 flow. Second operand 12 states and 302 transitions. [2024-06-28 01:24:44,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 505 transitions, 6789 flow [2024-06-28 01:24:44,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 505 transitions, 6703 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:24:44,980 INFO L231 Difference]: Finished difference. Result has 248 places, 425 transitions, 5285 flow [2024-06-28 01:24:44,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3839, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5285, PETRI_PLACES=248, PETRI_TRANSITIONS=425} [2024-06-28 01:24:44,980 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 193 predicate places. [2024-06-28 01:24:44,980 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 425 transitions, 5285 flow [2024-06-28 01:24:44,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:44,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:44,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:44,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:24:44,981 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:44,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:44,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2091491843, now seen corresponding path program 12 times [2024-06-28 01:24:44,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:44,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017802340] [2024-06-28 01:24:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:44,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:45,832 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 01:24:45,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:45,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017802340] [2024-06-28 01:24:45,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017802340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:45,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:45,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:45,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119577011] [2024-06-28 01:24:45,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:45,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:45,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:45,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:45,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:45,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:45,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 425 transitions, 5285 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:45,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:45,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:45,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:48,520 INFO L124 PetriNetUnfolderBase]: 7325/12117 cut-off events. [2024-06-28 01:24:48,520 INFO L125 PetriNetUnfolderBase]: For 651536/651555 co-relation queries the response was YES. [2024-06-28 01:24:48,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86856 conditions, 12117 events. 7325/12117 cut-off events. For 651536/651555 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 83511 event pairs, 1804 based on Foata normal form. 10/11733 useless extension candidates. Maximal degree in co-relation 86741. Up to 9922 conditions per place. [2024-06-28 01:24:48,707 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 414 selfloop transitions, 119 changer transitions 0/547 dead transitions. [2024-06-28 01:24:48,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 547 transitions, 7753 flow [2024-06-28 01:24:48,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:48,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-28 01:24:48,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-28 01:24:48,708 INFO L175 Difference]: Start difference. First operand has 248 places, 425 transitions, 5285 flow. Second operand 10 states and 250 transitions. [2024-06-28 01:24:48,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 547 transitions, 7753 flow [2024-06-28 01:24:50,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 547 transitions, 7405 flow, removed 170 selfloop flow, removed 2 redundant places. [2024-06-28 01:24:50,140 INFO L231 Difference]: Finished difference. Result has 260 places, 483 transitions, 6433 flow [2024-06-28 01:24:50,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5069, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6433, PETRI_PLACES=260, PETRI_TRANSITIONS=483} [2024-06-28 01:24:50,148 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 205 predicate places. [2024-06-28 01:24:50,148 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 483 transitions, 6433 flow [2024-06-28 01:24:50,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:50,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:50,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:50,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:24:50,148 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:50,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:50,149 INFO L85 PathProgramCache]: Analyzing trace with hash -647328470, now seen corresponding path program 1 times [2024-06-28 01:24:50,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:50,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210050639] [2024-06-28 01:24:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:50,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:50,760 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 01:24:50,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:50,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210050639] [2024-06-28 01:24:50,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210050639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:50,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:50,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:24:50,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779393042] [2024-06-28 01:24:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:50,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:24:50,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:50,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:24:50,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:24:50,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:24:50,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 483 transitions, 6433 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:50,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:50,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:24:50,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:53,625 INFO L124 PetriNetUnfolderBase]: 8672/13579 cut-off events. [2024-06-28 01:24:53,625 INFO L125 PetriNetUnfolderBase]: For 756066/756356 co-relation queries the response was YES. [2024-06-28 01:24:53,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97366 conditions, 13579 events. 8672/13579 cut-off events. For 756066/756356 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 88720 event pairs, 2559 based on Foata normal form. 163/13424 useless extension candidates. Maximal degree in co-relation 97245. Up to 12047 conditions per place. [2024-06-28 01:24:53,806 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 444 selfloop transitions, 25 changer transitions 0/512 dead transitions. [2024-06-28 01:24:53,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 512 transitions, 7705 flow [2024-06-28 01:24:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:24:53,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:24:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:24:53,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-28 01:24:53,807 INFO L175 Difference]: Start difference. First operand has 260 places, 483 transitions, 6433 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:24:53,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 512 transitions, 7705 flow [2024-06-28 01:24:54,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 512 transitions, 7164 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:54,953 INFO L231 Difference]: Finished difference. Result has 257 places, 489 transitions, 6039 flow [2024-06-28 01:24:54,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5892, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6039, PETRI_PLACES=257, PETRI_TRANSITIONS=489} [2024-06-28 01:24:54,954 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 202 predicate places. [2024-06-28 01:24:54,954 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 489 transitions, 6039 flow [2024-06-28 01:24:54,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:54,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:54,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:54,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:24:54,955 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:54,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:54,955 INFO L85 PathProgramCache]: Analyzing trace with hash -181226420, now seen corresponding path program 2 times [2024-06-28 01:24:54,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:54,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160249717] [2024-06-28 01:24:54,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:54,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:55,579 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 01:24:55,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:55,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160249717] [2024-06-28 01:24:55,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160249717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:55,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:55,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:24:55,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924153092] [2024-06-28 01:24:55,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:55,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:24:55,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:55,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:24:55,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:24:55,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:24:55,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 489 transitions, 6039 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:55,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:55,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:24:55,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:58,214 INFO L124 PetriNetUnfolderBase]: 8669/13579 cut-off events. [2024-06-28 01:24:58,214 INFO L125 PetriNetUnfolderBase]: For 764103/764397 co-relation queries the response was YES. [2024-06-28 01:24:58,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97589 conditions, 13579 events. 8669/13579 cut-off events. For 764103/764397 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 88822 event pairs, 2561 based on Foata normal form. 167/13427 useless extension candidates. Maximal degree in co-relation 97467. Up to 12044 conditions per place. [2024-06-28 01:24:58,419 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 440 selfloop transitions, 25 changer transitions 0/508 dead transitions. [2024-06-28 01:24:58,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 508 transitions, 7083 flow [2024-06-28 01:24:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:24:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:24:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:24:58,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-28 01:24:58,420 INFO L175 Difference]: Start difference. First operand has 257 places, 489 transitions, 6039 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:24:58,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 508 transitions, 7083 flow [2024-06-28 01:24:59,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 508 transitions, 7007 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-06-28 01:24:59,371 INFO L231 Difference]: Finished difference. Result has 261 places, 489 transitions, 6020 flow [2024-06-28 01:24:59,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5963, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6020, PETRI_PLACES=261, PETRI_TRANSITIONS=489} [2024-06-28 01:24:59,371 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 206 predicate places. [2024-06-28 01:24:59,372 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 489 transitions, 6020 flow [2024-06-28 01:24:59,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:59,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:59,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:59,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:24:59,372 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:59,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:59,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2094229438, now seen corresponding path program 1 times [2024-06-28 01:24:59,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:59,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985858399] [2024-06-28 01:24:59,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:59,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:00,711 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 01:25:00,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:00,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985858399] [2024-06-28 01:25:00,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985858399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:00,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:00,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:00,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096493796] [2024-06-28 01:25:00,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:00,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:00,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:00,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:00,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:25:00,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 489 transitions, 6020 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:00,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:00,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:25:00,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:03,927 INFO L124 PetriNetUnfolderBase]: 8576/13472 cut-off events. [2024-06-28 01:25:03,927 INFO L125 PetriNetUnfolderBase]: For 778916/778952 co-relation queries the response was YES. [2024-06-28 01:25:04,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98260 conditions, 13472 events. 8576/13472 cut-off events. For 778916/778952 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 88389 event pairs, 2353 based on Foata normal form. 4/13127 useless extension candidates. Maximal degree in co-relation 98136. Up to 11890 conditions per place. [2024-06-28 01:25:04,167 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 497 selfloop transitions, 33 changer transitions 0/545 dead transitions. [2024-06-28 01:25:04,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 545 transitions, 7446 flow [2024-06-28 01:25:04,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:25:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:25:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 01:25:04,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-28 01:25:04,169 INFO L175 Difference]: Start difference. First operand has 261 places, 489 transitions, 6020 flow. Second operand 9 states and 213 transitions. [2024-06-28 01:25:04,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 545 transitions, 7446 flow [2024-06-28 01:25:05,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 545 transitions, 7378 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:25:05,574 INFO L231 Difference]: Finished difference. Result has 266 places, 496 transitions, 6143 flow [2024-06-28 01:25:05,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5952, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6143, PETRI_PLACES=266, PETRI_TRANSITIONS=496} [2024-06-28 01:25:05,575 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 211 predicate places. [2024-06-28 01:25:05,575 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 496 transitions, 6143 flow [2024-06-28 01:25:05,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:05,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:05,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:05,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:25:05,576 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:05,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:05,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1370697012, now seen corresponding path program 1 times [2024-06-28 01:25:05,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:05,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612479966] [2024-06-28 01:25:05,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:05,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:06,958 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 01:25:06,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:06,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612479966] [2024-06-28 01:25:06,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612479966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:06,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:06,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:06,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357915663] [2024-06-28 01:25:06,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:06,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:06,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:06,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:07,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:07,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 496 transitions, 6143 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:07,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:07,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:07,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:10,221 INFO L124 PetriNetUnfolderBase]: 8097/13013 cut-off events. [2024-06-28 01:25:10,222 INFO L125 PetriNetUnfolderBase]: For 808325/808382 co-relation queries the response was YES. [2024-06-28 01:25:10,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98202 conditions, 13013 events. 8097/13013 cut-off events. For 808325/808382 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 87912 event pairs, 1574 based on Foata normal form. 8/12652 useless extension candidates. Maximal degree in co-relation 98076. Up to 10390 conditions per place. [2024-06-28 01:25:10,482 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 402 selfloop transitions, 160 changer transitions 0/579 dead transitions. [2024-06-28 01:25:10,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 579 transitions, 8100 flow [2024-06-28 01:25:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-06-28 01:25:10,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269016697588126 [2024-06-28 01:25:10,485 INFO L175 Difference]: Start difference. First operand has 266 places, 496 transitions, 6143 flow. Second operand 11 states and 284 transitions. [2024-06-28 01:25:10,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 579 transitions, 8100 flow [2024-06-28 01:25:11,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 579 transitions, 7971 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:25:11,985 INFO L231 Difference]: Finished difference. Result has 271 places, 500 transitions, 6497 flow [2024-06-28 01:25:11,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6014, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6497, PETRI_PLACES=271, PETRI_TRANSITIONS=500} [2024-06-28 01:25:11,986 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 216 predicate places. [2024-06-28 01:25:11,986 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 500 transitions, 6497 flow [2024-06-28 01:25:11,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:11,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:11,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:11,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:25:11,986 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:11,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:11,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1269570546, now seen corresponding path program 2 times [2024-06-28 01:25:11,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:11,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204948763] [2024-06-28 01:25:11,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:11,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:13,481 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 01:25:13,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:13,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204948763] [2024-06-28 01:25:13,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204948763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:13,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:13,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:13,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961584806] [2024-06-28 01:25:13,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:13,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:13,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:13,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:13,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:13,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:13,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 500 transitions, 6497 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:13,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:13,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:13,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:16,840 INFO L124 PetriNetUnfolderBase]: 8126/13060 cut-off events. [2024-06-28 01:25:16,840 INFO L125 PetriNetUnfolderBase]: For 839073/839130 co-relation queries the response was YES. [2024-06-28 01:25:17,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99870 conditions, 13060 events. 8126/13060 cut-off events. For 839073/839130 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 88345 event pairs, 1921 based on Foata normal form. 8/12699 useless extension candidates. Maximal degree in co-relation 99743. Up to 10706 conditions per place. [2024-06-28 01:25:17,087 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 406 selfloop transitions, 154 changer transitions 0/577 dead transitions. [2024-06-28 01:25:17,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 577 transitions, 8134 flow [2024-06-28 01:25:17,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:17,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 296 transitions. [2024-06-28 01:25:17,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2024-06-28 01:25:17,088 INFO L175 Difference]: Start difference. First operand has 271 places, 500 transitions, 6497 flow. Second operand 12 states and 296 transitions. [2024-06-28 01:25:17,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 577 transitions, 8134 flow [2024-06-28 01:25:18,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 577 transitions, 7783 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:18,552 INFO L231 Difference]: Finished difference. Result has 276 places, 502 transitions, 6545 flow [2024-06-28 01:25:18,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6178, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6545, PETRI_PLACES=276, PETRI_TRANSITIONS=502} [2024-06-28 01:25:18,553 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 221 predicate places. [2024-06-28 01:25:18,553 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 502 transitions, 6545 flow [2024-06-28 01:25:18,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:18,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:18,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:18,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:25:18,554 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:18,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:18,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1269570701, now seen corresponding path program 1 times [2024-06-28 01:25:18,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:18,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227737300] [2024-06-28 01:25:18,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:18,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:20,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:20,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227737300] [2024-06-28 01:25:20,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227737300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:20,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:20,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:20,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750128447] [2024-06-28 01:25:20,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:20,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:20,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:20,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:20,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:20,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:20,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 502 transitions, 6545 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:20,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:20,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:20,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:23,379 INFO L124 PetriNetUnfolderBase]: 8237/13242 cut-off events. [2024-06-28 01:25:23,379 INFO L125 PetriNetUnfolderBase]: For 860013/860070 co-relation queries the response was YES. [2024-06-28 01:25:23,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101121 conditions, 13242 events. 8237/13242 cut-off events. For 860013/860070 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 89367 event pairs, 1867 based on Foata normal form. 8/12880 useless extension candidates. Maximal degree in co-relation 100992. Up to 10475 conditions per place. [2024-06-28 01:25:23,611 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 411 selfloop transitions, 177 changer transitions 0/605 dead transitions. [2024-06-28 01:25:23,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 605 transitions, 8439 flow [2024-06-28 01:25:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 326 transitions. [2024-06-28 01:25:23,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117739403453689 [2024-06-28 01:25:23,612 INFO L175 Difference]: Start difference. First operand has 276 places, 502 transitions, 6545 flow. Second operand 13 states and 326 transitions. [2024-06-28 01:25:23,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 605 transitions, 8439 flow [2024-06-28 01:25:25,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 605 transitions, 8083 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:25,320 INFO L231 Difference]: Finished difference. Result has 281 places, 511 transitions, 6770 flow [2024-06-28 01:25:25,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6200, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6770, PETRI_PLACES=281, PETRI_TRANSITIONS=511} [2024-06-28 01:25:25,321 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 226 predicate places. [2024-06-28 01:25:25,321 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 511 transitions, 6770 flow [2024-06-28 01:25:25,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:25,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:25,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:25,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:25:25,321 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:25,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:25,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1269566826, now seen corresponding path program 3 times [2024-06-28 01:25:25,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:25,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770222184] [2024-06-28 01:25:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:26,790 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 01:25:26,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:26,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770222184] [2024-06-28 01:25:26,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770222184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:26,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:26,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:26,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695617012] [2024-06-28 01:25:26,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:26,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:26,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:26,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:26,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:26,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:26,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 511 transitions, 6770 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:26,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:26,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:26,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:30,357 INFO L124 PetriNetUnfolderBase]: 8277/13262 cut-off events. [2024-06-28 01:25:30,357 INFO L125 PetriNetUnfolderBase]: For 891872/891937 co-relation queries the response was YES. [2024-06-28 01:25:30,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102927 conditions, 13262 events. 8277/13262 cut-off events. For 891872/891937 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 89569 event pairs, 1928 based on Foata normal form. 8/12895 useless extension candidates. Maximal degree in co-relation 102795. Up to 10779 conditions per place. [2024-06-28 01:25:30,725 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 440 selfloop transitions, 139 changer transitions 0/596 dead transitions. [2024-06-28 01:25:30,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 596 transitions, 8749 flow [2024-06-28 01:25:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:30,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-06-28 01:25:30,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213358070500927 [2024-06-28 01:25:30,726 INFO L175 Difference]: Start difference. First operand has 281 places, 511 transitions, 6770 flow. Second operand 11 states and 281 transitions. [2024-06-28 01:25:30,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 596 transitions, 8749 flow [2024-06-28 01:25:32,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 596 transitions, 8372 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:32,253 INFO L231 Difference]: Finished difference. Result has 284 places, 519 transitions, 6835 flow [2024-06-28 01:25:32,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6393, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6835, PETRI_PLACES=284, PETRI_TRANSITIONS=519} [2024-06-28 01:25:32,254 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 229 predicate places. [2024-06-28 01:25:32,254 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 519 transitions, 6835 flow [2024-06-28 01:25:32,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:32,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:32,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:32,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:25:32,254 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:32,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:32,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1356262356, now seen corresponding path program 4 times [2024-06-28 01:25:32,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:32,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746023156] [2024-06-28 01:25:32,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:32,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:33,682 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 01:25:33,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:33,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746023156] [2024-06-28 01:25:33,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746023156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:33,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:33,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:33,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045663928] [2024-06-28 01:25:33,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:33,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:33,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:33,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:33,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:33,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:33,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 519 transitions, 6835 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:33,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:33,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:33,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:37,425 INFO L124 PetriNetUnfolderBase]: 8350/13416 cut-off events. [2024-06-28 01:25:37,425 INFO L125 PetriNetUnfolderBase]: For 914758/914823 co-relation queries the response was YES. [2024-06-28 01:25:37,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103914 conditions, 13416 events. 8350/13416 cut-off events. For 914758/914823 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 91049 event pairs, 1943 based on Foata normal form. 8/13037 useless extension candidates. Maximal degree in co-relation 103780. Up to 11119 conditions per place. [2024-06-28 01:25:37,843 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 425 selfloop transitions, 151 changer transitions 0/593 dead transitions. [2024-06-28 01:25:37,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 593 transitions, 8537 flow [2024-06-28 01:25:37,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:37,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-28 01:25:37,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-28 01:25:37,844 INFO L175 Difference]: Start difference. First operand has 284 places, 519 transitions, 6835 flow. Second operand 10 states and 252 transitions. [2024-06-28 01:25:37,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 593 transitions, 8537 flow [2024-06-28 01:25:39,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 593 transitions, 8303 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:39,008 INFO L231 Difference]: Finished difference. Result has 287 places, 529 transitions, 7102 flow [2024-06-28 01:25:39,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6604, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7102, PETRI_PLACES=287, PETRI_TRANSITIONS=529} [2024-06-28 01:25:39,009 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 232 predicate places. [2024-06-28 01:25:39,009 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 529 transitions, 7102 flow [2024-06-28 01:25:39,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:39,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:39,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:39,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:25:39,009 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:39,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:39,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1281983382, now seen corresponding path program 5 times [2024-06-28 01:25:39,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:39,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275698273] [2024-06-28 01:25:39,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:39,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:40,471 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 01:25:40,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:40,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275698273] [2024-06-28 01:25:40,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275698273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:40,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:40,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:40,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771789454] [2024-06-28 01:25:40,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:40,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:40,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:40,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:40,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:40,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:40,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 529 transitions, 7102 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:40,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:40,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:40,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:44,105 INFO L124 PetriNetUnfolderBase]: 8350/13391 cut-off events. [2024-06-28 01:25:44,106 INFO L125 PetriNetUnfolderBase]: For 926937/927002 co-relation queries the response was YES. [2024-06-28 01:25:44,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104221 conditions, 13391 events. 8350/13391 cut-off events. For 926937/927002 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 90693 event pairs, 1923 based on Foata normal form. 8/13017 useless extension candidates. Maximal degree in co-relation 104085. Up to 11220 conditions per place. [2024-06-28 01:25:44,310 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 434 selfloop transitions, 147 changer transitions 0/598 dead transitions. [2024-06-28 01:25:44,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 598 transitions, 8708 flow [2024-06-28 01:25:44,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-28 01:25:44,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-28 01:25:44,312 INFO L175 Difference]: Start difference. First operand has 287 places, 529 transitions, 7102 flow. Second operand 10 states and 250 transitions. [2024-06-28 01:25:44,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 598 transitions, 8708 flow [2024-06-28 01:25:45,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 598 transitions, 8186 flow, removed 106 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:45,627 INFO L231 Difference]: Finished difference. Result has 290 places, 531 transitions, 6948 flow [2024-06-28 01:25:45,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6616, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6948, PETRI_PLACES=290, PETRI_TRANSITIONS=531} [2024-06-28 01:25:45,628 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 235 predicate places. [2024-06-28 01:25:45,628 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 531 transitions, 6948 flow [2024-06-28 01:25:45,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:45,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:45,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:45,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:25:45,629 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:45,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:45,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2003072278, now seen corresponding path program 6 times [2024-06-28 01:25:45,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:45,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62298411] [2024-06-28 01:25:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:45,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:47,439 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 01:25:47,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:47,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62298411] [2024-06-28 01:25:47,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62298411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:47,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:47,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:47,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824036485] [2024-06-28 01:25:47,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:47,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:47,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:47,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:47,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:47,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:47,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 531 transitions, 6948 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:47,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:47,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:47,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:51,169 INFO L124 PetriNetUnfolderBase]: 8432/13530 cut-off events. [2024-06-28 01:25:51,170 INFO L125 PetriNetUnfolderBase]: For 962164/962226 co-relation queries the response was YES. [2024-06-28 01:25:51,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105554 conditions, 13530 events. 8432/13530 cut-off events. For 962164/962226 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 91854 event pairs, 1922 based on Foata normal form. 5/13145 useless extension candidates. Maximal degree in co-relation 105417. Up to 10894 conditions per place. [2024-06-28 01:25:51,377 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 398 selfloop transitions, 188 changer transitions 0/603 dead transitions. [2024-06-28 01:25:51,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 603 transitions, 8967 flow [2024-06-28 01:25:51,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:51,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-28 01:25:51,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-06-28 01:25:51,378 INFO L175 Difference]: Start difference. First operand has 290 places, 531 transitions, 6948 flow. Second operand 10 states and 258 transitions. [2024-06-28 01:25:51,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 603 transitions, 8967 flow [2024-06-28 01:25:52,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 603 transitions, 8586 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:52,906 INFO L231 Difference]: Finished difference. Result has 292 places, 535 transitions, 7118 flow [2024-06-28 01:25:52,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6567, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7118, PETRI_PLACES=292, PETRI_TRANSITIONS=535} [2024-06-28 01:25:52,907 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 237 predicate places. [2024-06-28 01:25:52,907 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 535 transitions, 7118 flow [2024-06-28 01:25:52,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:52,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:52,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:52,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:25:52,907 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:52,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:52,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2003068403, now seen corresponding path program 2 times [2024-06-28 01:25:52,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:52,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105226175] [2024-06-28 01:25:52,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:52,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:54,435 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 01:25:54,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:54,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105226175] [2024-06-28 01:25:54,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105226175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:54,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:54,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:54,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813603468] [2024-06-28 01:25:54,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:54,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:54,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:54,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:54,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:54,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:54,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 535 transitions, 7118 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:25:54,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:54,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:54,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:58,466 INFO L124 PetriNetUnfolderBase]: 8453/13575 cut-off events. [2024-06-28 01:25:58,467 INFO L125 PetriNetUnfolderBase]: For 1007242/1007334 co-relation queries the response was YES. [2024-06-28 01:25:58,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107409 conditions, 13575 events. 8453/13575 cut-off events. For 1007242/1007334 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 92488 event pairs, 1877 based on Foata normal form. 19/13220 useless extension candidates. Maximal degree in co-relation 107271. Up to 9885 conditions per place. [2024-06-28 01:25:58,673 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 349 selfloop transitions, 264 changer transitions 0/630 dead transitions. [2024-06-28 01:25:58,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 630 transitions, 9388 flow [2024-06-28 01:25:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 316 transitions. [2024-06-28 01:25:58,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5374149659863946 [2024-06-28 01:25:58,674 INFO L175 Difference]: Start difference. First operand has 292 places, 535 transitions, 7118 flow. Second operand 12 states and 316 transitions. [2024-06-28 01:25:58,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 630 transitions, 9388 flow [2024-06-28 01:26:00,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 630 transitions, 9056 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-28 01:26:00,160 INFO L231 Difference]: Finished difference. Result has 298 places, 541 transitions, 7521 flow [2024-06-28 01:26:00,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6786, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7521, PETRI_PLACES=298, PETRI_TRANSITIONS=541} [2024-06-28 01:26:00,161 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 243 predicate places. [2024-06-28 01:26:00,161 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 541 transitions, 7521 flow [2024-06-28 01:26:00,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:26:00,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:00,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:00,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:26:00,161 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:00,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:00,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2003068558, now seen corresponding path program 7 times [2024-06-28 01:26:00,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:00,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829486008] [2024-06-28 01:26:00,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:00,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:01,797 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 01:26:01,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:01,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829486008] [2024-06-28 01:26:01,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829486008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:01,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:01,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:01,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830003303] [2024-06-28 01:26:01,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:01,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:01,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:01,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:01,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:26:01,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 541 transitions, 7521 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:26:01,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:01,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:26:01,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:05,287 INFO L124 PetriNetUnfolderBase]: 8616/13825 cut-off events. [2024-06-28 01:26:05,287 INFO L125 PetriNetUnfolderBase]: For 1041293/1041355 co-relation queries the response was YES. [2024-06-28 01:26:05,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111613 conditions, 13825 events. 8616/13825 cut-off events. For 1041293/1041355 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 93826 event pairs, 1947 based on Foata normal form. 5/13440 useless extension candidates. Maximal degree in co-relation 111473. Up to 11174 conditions per place. [2024-06-28 01:26:05,657 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 393 selfloop transitions, 223 changer transitions 0/633 dead transitions. [2024-06-28 01:26:05,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 633 transitions, 9965 flow [2024-06-28 01:26:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-28 01:26:05,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-06-28 01:26:05,658 INFO L175 Difference]: Start difference. First operand has 298 places, 541 transitions, 7521 flow. Second operand 10 states and 256 transitions. [2024-06-28 01:26:05,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 633 transitions, 9965 flow [2024-06-28 01:26:07,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 633 transitions, 9543 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-28 01:26:07,538 INFO L231 Difference]: Finished difference. Result has 302 places, 564 transitions, 8427 flow [2024-06-28 01:26:07,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7102, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8427, PETRI_PLACES=302, PETRI_TRANSITIONS=564} [2024-06-28 01:26:07,539 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 247 predicate places. [2024-06-28 01:26:07,539 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 564 transitions, 8427 flow [2024-06-28 01:26:07,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:26:07,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:07,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:07,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:26:07,541 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:07,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:07,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2002924408, now seen corresponding path program 8 times [2024-06-28 01:26:07,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:07,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163093261] [2024-06-28 01:26:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:07,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:09,239 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 01:26:09,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:09,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163093261] [2024-06-28 01:26:09,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163093261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:09,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:09,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:09,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236843401] [2024-06-28 01:26:09,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:09,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:09,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:09,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:09,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:09,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:26:09,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 564 transitions, 8427 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:26:09,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:09,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:26:09,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:12,863 INFO L124 PetriNetUnfolderBase]: 8646/13897 cut-off events. [2024-06-28 01:26:12,864 INFO L125 PetriNetUnfolderBase]: For 1084752/1084822 co-relation queries the response was YES. [2024-06-28 01:26:13,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115440 conditions, 13897 events. 8646/13897 cut-off events. For 1084752/1084822 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 95058 event pairs, 1974 based on Foata normal form. 5/13494 useless extension candidates. Maximal degree in co-relation 115296. Up to 11345 conditions per place. [2024-06-28 01:26:13,080 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 434 selfloop transitions, 180 changer transitions 0/631 dead transitions. [2024-06-28 01:26:13,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 631 transitions, 10124 flow [2024-06-28 01:26:13,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:13,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-28 01:26:13,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-06-28 01:26:13,081 INFO L175 Difference]: Start difference. First operand has 302 places, 564 transitions, 8427 flow. Second operand 10 states and 254 transitions. [2024-06-28 01:26:13,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 631 transitions, 10124 flow [2024-06-28 01:26:15,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 631 transitions, 9577 flow, removed 227 selfloop flow, removed 3 redundant places. [2024-06-28 01:26:15,198 INFO L231 Difference]: Finished difference. Result has 309 places, 566 transitions, 8303 flow [2024-06-28 01:26:15,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7880, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8303, PETRI_PLACES=309, PETRI_TRANSITIONS=566} [2024-06-28 01:26:15,198 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 254 predicate places. [2024-06-28 01:26:15,198 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 566 transitions, 8303 flow [2024-06-28 01:26:15,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 01:26:15,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:15,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:15,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:26:15,199 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:15,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:15,199 INFO L85 PathProgramCache]: Analyzing trace with hash 640833595, now seen corresponding path program 3 times [2024-06-28 01:26:15,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:15,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674623464] [2024-06-28 01:26:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:15,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat