./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.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/mix006_power.oepc_pso.oepc_rmo.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/mix006_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix006_power.oepc_pso.oepc_rmo.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 01:20:14,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:20:14,173 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:20:14,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:20:14,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:20:14,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:20:14,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:20:14,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:20:14,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:20:14,212 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:20:14,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:20:14,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:20:14,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:20:14,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:20:14,214 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:20:14,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:20:14,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:20:14,215 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:20:14,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:20:14,215 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:20:14,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:20:14,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:20:14,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:20:14,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:20:14,216 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:20:14,216 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:20:14,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:20:14,217 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:20:14,217 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:20:14,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:20:14,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:20:14,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:20:14,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:20:14,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:20:14,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:20:14,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:20:14,219 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:20:14,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:20:14,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:20:14,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:20:14,220 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:20:14,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:20:14,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:20:14,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:20:14,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:20:14,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:20:14,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:20:14,507 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:20:14,508 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:20:14,509 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix006_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 01:20:14,665 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:20:14,666 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:20:14,667 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:20:15,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:20:15,878 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:20:15,879 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:20:15,896 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0dfa9513/bdf318c4b8424efe8249a1aafe71b374/FLAGa9675fbc0 [2024-06-28 01:20:15,911 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0dfa9513/bdf318c4b8424efe8249a1aafe71b374 [2024-06-28 01:20:15,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:20:15,912 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:20:15,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:20:15,914 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:20:15,918 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:20:15,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:20:14" (1/2) ... [2024-06-28 01:20:15,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652d21cd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:20:15, skipping insertion in model container [2024-06-28 01:20:15,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:20:14" (1/2) ... [2024-06-28 01:20:15,921 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66164a87 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:20:15, skipping insertion in model container [2024-06-28 01:20:15,921 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:20:15" (2/2) ... [2024-06-28 01:20:15,921 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652d21cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:15, skipping insertion in model container [2024-06-28 01:20:15,921 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:20:15" (2/2) ... [2024-06-28 01:20:15,922 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:20:15,996 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:20:15,997 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0) [2024-06-28 01:20:15,997 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0) [2024-06-28 01:20:15,997 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] (((((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0) [2024-06-28 01:20:15,997 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:20:15,997 INFO L106 edCorrectnessWitness]: ghost_update [L844-L844] multithreaded = 1; [2024-06-28 01:20:16,046 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:20:16,175 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/mix006_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-28 01:20:16,336 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:20:16,349 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:20:16,397 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/mix006_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:20:16,507 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:20:16,545 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:20:16,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16 WrapperNode [2024-06-28 01:20:16,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:20:16,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:20:16,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:20:16,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:20:16,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16" (1/1) ... [2024-06-28 01:20:16,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16" (1/1) ... [2024-06-28 01:20:16,651 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 123 [2024-06-28 01:20:16,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:20:16,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:20:16,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:20:16,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:20:16,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16" (1/1) ... [2024-06-28 01:20:16,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16" (1/1) ... [2024-06-28 01:20:16,679 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16" (1/1) ... [2024-06-28 01:20:16,708 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 01:20:16,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16" (1/1) ... [2024-06-28 01:20:16,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16" (1/1) ... [2024-06-28 01:20:16,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16" (1/1) ... [2024-06-28 01:20:16,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16" (1/1) ... [2024-06-28 01:20:16,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16" (1/1) ... [2024-06-28 01:20:16,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16" (1/1) ... [2024-06-28 01:20:16,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:20:16,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:20:16,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:20:16,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:20:16,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16" (1/1) ... [2024-06-28 01:20:16,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:20:16,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:20:16,791 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 01:20:16,812 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 01:20:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:20:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:20:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:20:16,819 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:20:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:20:16,819 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:20:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:20:16,820 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:20:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:20:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:20:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:20:16,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:20:16,822 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 01:20:16,950 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:20:16,951 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:20:17,253 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:20:17,253 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:20:17,396 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:20:17,396 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:20:17,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:20:17 BoogieIcfgContainer [2024-06-28 01:20:17,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:20:17,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:20:17,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:20:17,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:20:17,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:20:14" (1/4) ... [2024-06-28 01:20:17,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260d9db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:20:17, skipping insertion in model container [2024-06-28 01:20:17,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:20:15" (2/4) ... [2024-06-28 01:20:17,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260d9db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:20:17, skipping insertion in model container [2024-06-28 01:20:17,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:20:16" (3/4) ... [2024-06-28 01:20:17,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260d9db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:20:17, skipping insertion in model container [2024-06-28 01:20:17,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:20:17" (4/4) ... [2024-06-28 01:20:17,406 INFO L112 eAbstractionObserver]: Analyzing ICFG mix006_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:20:17,418 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:20:17,419 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:20:17,419 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:20:17,465 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:20:17,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:20:17,539 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:20:17,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:20:17,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 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. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-28 01:20:17,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:20:17,546 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:20:17,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:20:17,562 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;@2ff5a895, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:20:17,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:20:17,568 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:20:17,568 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:20:17,568 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:20:17,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:17,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:20:17,570 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 01:20:17,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash 359830695, now seen corresponding path program 1 times [2024-06-28 01:20:17,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:17,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622541700] [2024-06-28 01:20:17,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:17,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:18,419 INFO 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 01:20:18,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:18,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622541700] [2024-06-28 01:20:18,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622541700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:18,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:18,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:20:18,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082662088] [2024-06-28 01:20:18,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:18,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:20:18,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:18,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:20:18,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:20:18,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 01:20:18,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:18,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:18,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 01:20:18,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:19,202 INFO L124 PetriNetUnfolderBase]: 3699/6172 cut-off events. [2024-06-28 01:20:19,202 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 01:20:19,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11598 conditions, 6172 events. 3699/6172 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 41154 event pairs, 2881 based on Foata normal form. 176/5836 useless extension candidates. Maximal degree in co-relation 11586. Up to 5323 conditions per place. [2024-06-28 01:20:19,237 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 41 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 01:20:19,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 225 flow [2024-06-28 01:20:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:20:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:20:19,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-28 01:20:19,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-28 01:20:19,248 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 99 transitions. [2024-06-28 01:20:19,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 225 flow [2024-06-28 01:20:19,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:20:19,256 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-28 01:20:19,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 01:20:19,260 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:20:19,261 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-28 01:20:19,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:19,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:19,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:20:19,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:20:19,262 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 01:20:19,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:19,263 INFO L85 PathProgramCache]: Analyzing trace with hash 359830807, now seen corresponding path program 1 times [2024-06-28 01:20:19,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:19,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188353325] [2024-06-28 01:20:19,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:19,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:19,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:19,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188353325] [2024-06-28 01:20:19,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188353325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:19,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:19,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:20:19,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901742502] [2024-06-28 01:20:19,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:19,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:20:19,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:19,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:20:19,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:20:19,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2024-06-28 01:20:19,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:19,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:19,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2024-06-28 01:20:19,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:19,586 INFO L124 PetriNetUnfolderBase]: 950/1792 cut-off events. [2024-06-28 01:20:19,586 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-28 01:20:19,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3494 conditions, 1792 events. 950/1792 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11873 event pairs, 463 based on Foata normal form. 0/1676 useless extension candidates. Maximal degree in co-relation 3482. Up to 1207 conditions per place. [2024-06-28 01:20:19,594 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 35 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-06-28 01:20:19,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 234 flow [2024-06-28 01:20:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:20:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:20:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-28 01:20:19,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-06-28 01:20:19,596 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 3 states and 113 transitions. [2024-06-28 01:20:19,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 234 flow [2024-06-28 01:20:19,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:20:19,598 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 124 flow [2024-06-28 01:20:19,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 01:20:19,599 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:20:19,599 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 124 flow [2024-06-28 01:20:19,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:19,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:19,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:19,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:20:19,600 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 01:20:19,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:19,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2094937985, now seen corresponding path program 1 times [2024-06-28 01:20:19,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:19,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639588745] [2024-06-28 01:20:19,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:19,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:20,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:20,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639588745] [2024-06-28 01:20:20,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639588745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:20,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:20,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:20:20,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358445896] [2024-06-28 01:20:20,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:20,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:20:20,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:20,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:20:20,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:20:20,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 01:20:20,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:20,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:20,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 01:20:20,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:20,610 INFO L124 PetriNetUnfolderBase]: 3141/5176 cut-off events. [2024-06-28 01:20:20,611 INFO L125 PetriNetUnfolderBase]: For 1200/1200 co-relation queries the response was YES. [2024-06-28 01:20:20,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10957 conditions, 5176 events. 3141/5176 cut-off events. For 1200/1200 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 32828 event pairs, 2003 based on Foata normal form. 3/4983 useless extension candidates. Maximal degree in co-relation 10944. Up to 4514 conditions per place. [2024-06-28 01:20:20,635 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 49 selfloop transitions, 8 changer transitions 2/72 dead transitions. [2024-06-28 01:20:20,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 314 flow [2024-06-28 01:20:20,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:20:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:20:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-28 01:20:20,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-06-28 01:20:20,637 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 124 flow. Second operand 4 states and 123 transitions. [2024-06-28 01:20:20,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 314 flow [2024-06-28 01:20:20,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:20:20,639 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 185 flow [2024-06-28 01:20:20,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-28 01:20:20,640 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 01:20:20,640 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 185 flow [2024-06-28 01:20:20,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:20,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:20,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:20,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:20:20,641 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 01:20:20,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:20,641 INFO L85 PathProgramCache]: Analyzing trace with hash -518567110, now seen corresponding path program 1 times [2024-06-28 01:20:20,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:20,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197432940] [2024-06-28 01:20:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:20,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:21,180 INFO 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 01:20:21,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:21,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197432940] [2024-06-28 01:20:21,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197432940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:21,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:21,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:20:21,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468034465] [2024-06-28 01:20:21,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:21,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:20:21,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:21,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:20:21,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:20:21,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:20:21,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 01:20:21,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:21,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:20:21,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:21,740 INFO L124 PetriNetUnfolderBase]: 3310/5531 cut-off events. [2024-06-28 01:20:21,741 INFO L125 PetriNetUnfolderBase]: For 2354/2354 co-relation queries the response was YES. [2024-06-28 01:20:21,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12596 conditions, 5531 events. 3310/5531 cut-off events. For 2354/2354 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 35356 event pairs, 1621 based on Foata normal form. 5/5352 useless extension candidates. Maximal degree in co-relation 12581. Up to 4663 conditions per place. [2024-06-28 01:20:21,768 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 66 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2024-06-28 01:20:21,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 96 transitions, 495 flow [2024-06-28 01:20:21,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:20:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:20:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2024-06-28 01:20:21,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-06-28 01:20:21,770 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 185 flow. Second operand 5 states and 154 transitions. [2024-06-28 01:20:21,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 96 transitions, 495 flow [2024-06-28 01:20:21,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 96 transitions, 484 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:20:21,773 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 299 flow [2024-06-28 01:20:21,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-28 01:20:21,774 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-28 01:20:21,774 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 299 flow [2024-06-28 01:20:21,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 01:20:21,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:21,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:21,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:20:21,775 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 01:20:21,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1021172900, now seen corresponding path program 1 times [2024-06-28 01:20:21,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:21,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740197907] [2024-06-28 01:20:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:21,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:22,454 INFO 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 01:20:22,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:22,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740197907] [2024-06-28 01:20:22,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740197907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:22,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:22,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:20:22,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765441702] [2024-06-28 01:20:22,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:22,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:20:22,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:22,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:20:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:20:22,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:20:22,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:22,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:22,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:20:22,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:23,173 INFO L124 PetriNetUnfolderBase]: 3332/5151 cut-off events. [2024-06-28 01:20:23,173 INFO L125 PetriNetUnfolderBase]: For 5613/5616 co-relation queries the response was YES. [2024-06-28 01:20:23,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14286 conditions, 5151 events. 3332/5151 cut-off events. For 5613/5616 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 30248 event pairs, 1183 based on Foata normal form. 7/5121 useless extension candidates. Maximal degree in co-relation 14267. Up to 4629 conditions per place. [2024-06-28 01:20:23,203 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 78 selfloop transitions, 33 changer transitions 0/123 dead transitions. [2024-06-28 01:20:23,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 123 transitions, 753 flow [2024-06-28 01:20:23,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:20:23,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:20:23,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-06-28 01:20:23,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-06-28 01:20:23,206 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 299 flow. Second operand 6 states and 184 transitions. [2024-06-28 01:20:23,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 123 transitions, 753 flow [2024-06-28 01:20:23,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 123 transitions, 745 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 01:20:23,216 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 509 flow [2024-06-28 01:20:23,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=509, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2024-06-28 01:20:23,218 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-28 01:20:23,222 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 509 flow [2024-06-28 01:20:23,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:23,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:23,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:23,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:20:23,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:23,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:23,223 INFO L85 PathProgramCache]: Analyzing trace with hash -126753831, now seen corresponding path program 1 times [2024-06-28 01:20:23,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:23,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676459635] [2024-06-28 01:20:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:23,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:23,919 INFO 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 01:20:23,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:23,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676459635] [2024-06-28 01:20:23,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676459635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:23,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:23,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:20:23,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587245113] [2024-06-28 01:20:23,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:23,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:20:23,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:23,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:20:23,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:20:24,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:20:24,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:24,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:24,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:20:24,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:24,729 INFO L124 PetriNetUnfolderBase]: 3359/5669 cut-off events. [2024-06-28 01:20:24,730 INFO L125 PetriNetUnfolderBase]: For 11571/11577 co-relation queries the response was YES. [2024-06-28 01:20:24,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17257 conditions, 5669 events. 3359/5669 cut-off events. For 11571/11577 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 36637 event pairs, 1398 based on Foata normal form. 14/5503 useless extension candidates. Maximal degree in co-relation 17232. Up to 4594 conditions per place. [2024-06-28 01:20:24,759 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 85 selfloop transitions, 36 changer transitions 0/133 dead transitions. [2024-06-28 01:20:24,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 133 transitions, 949 flow [2024-06-28 01:20:24,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:20:24,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:20:24,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-06-28 01:20:24,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6220238095238095 [2024-06-28 01:20:24,761 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 509 flow. Second operand 7 states and 209 transitions. [2024-06-28 01:20:24,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 133 transitions, 949 flow [2024-06-28 01:20:24,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 133 transitions, 915 flow, removed 17 selfloop flow, removed 0 redundant places. [2024-06-28 01:20:24,773 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 579 flow [2024-06-28 01:20:24,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=579, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2024-06-28 01:20:24,774 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2024-06-28 01:20:24,774 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 579 flow [2024-06-28 01:20:24,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:24,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:24,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:24,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:20:24,775 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 01:20:24,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:24,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1123486705, now seen corresponding path program 1 times [2024-06-28 01:20:24,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:24,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648707207] [2024-06-28 01:20:24,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:24,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:25,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648707207] [2024-06-28 01:20:25,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648707207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:25,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:25,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:20:25,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471932660] [2024-06-28 01:20:25,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:25,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:20:25,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:25,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:20:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:20:25,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:25,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 579 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:25,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:25,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:25,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:26,096 INFO L124 PetriNetUnfolderBase]: 3905/6531 cut-off events. [2024-06-28 01:20:26,096 INFO L125 PetriNetUnfolderBase]: For 14165/14165 co-relation queries the response was YES. [2024-06-28 01:20:26,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19827 conditions, 6531 events. 3905/6531 cut-off events. For 14165/14165 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 42400 event pairs, 1648 based on Foata normal form. 2/6346 useless extension candidates. Maximal degree in co-relation 19798. Up to 5591 conditions per place. [2024-06-28 01:20:26,137 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 74 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-06-28 01:20:26,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 98 transitions, 795 flow [2024-06-28 01:20:26,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:20:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:20:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-28 01:20:26,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:20:26,139 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 579 flow. Second operand 5 states and 123 transitions. [2024-06-28 01:20:26,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 98 transitions, 795 flow [2024-06-28 01:20:26,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 705 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:20:26,150 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 529 flow [2024-06-28 01:20:26,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=529, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2024-06-28 01:20:26,151 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2024-06-28 01:20:26,152 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 529 flow [2024-06-28 01:20:26,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:26,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:26,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:26,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:20:26,152 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 01:20:26,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:26,153 INFO L85 PathProgramCache]: Analyzing trace with hash 436032468, now seen corresponding path program 1 times [2024-06-28 01:20:26,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:26,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705993844] [2024-06-28 01:20:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:26,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:26,697 INFO 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 01:20:26,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:26,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705993844] [2024-06-28 01:20:26,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705993844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:26,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:26,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:20:26,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160056473] [2024-06-28 01:20:26,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:26,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:20:26,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:26,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:20:26,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:20:26,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:26,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 529 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 01:20:26,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:26,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:26,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:27,598 INFO L124 PetriNetUnfolderBase]: 3895/6566 cut-off events. [2024-06-28 01:20:27,598 INFO L125 PetriNetUnfolderBase]: For 14791/14791 co-relation queries the response was YES. [2024-06-28 01:20:27,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19622 conditions, 6566 events. 3895/6566 cut-off events. For 14791/14791 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 42999 event pairs, 1566 based on Foata normal form. 4/6383 useless extension candidates. Maximal degree in co-relation 19591. Up to 5543 conditions per place. [2024-06-28 01:20:27,634 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 83 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2024-06-28 01:20:27,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 110 transitions, 813 flow [2024-06-28 01:20:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:20:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:20:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:20:27,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 01:20:27,637 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 529 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:20:27,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 110 transitions, 813 flow [2024-06-28 01:20:27,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 110 transitions, 774 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:20:27,647 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 559 flow [2024-06-28 01:20:27,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=559, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-28 01:20:27,648 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2024-06-28 01:20:27,649 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 559 flow [2024-06-28 01:20:27,649 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 01:20:27,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:27,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:27,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:20:27,649 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 01:20:27,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:27,650 INFO L85 PathProgramCache]: Analyzing trace with hash 625460685, now seen corresponding path program 1 times [2024-06-28 01:20:27,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:27,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958594726] [2024-06-28 01:20:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:27,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:28,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:28,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958594726] [2024-06-28 01:20:28,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958594726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:28,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:28,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:20:28,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464406643] [2024-06-28 01:20:28,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:28,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:20:28,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:28,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:20:28,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:20:28,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:28,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 559 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 01:20:28,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:28,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:28,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:29,030 INFO L124 PetriNetUnfolderBase]: 3913/6467 cut-off events. [2024-06-28 01:20:29,030 INFO L125 PetriNetUnfolderBase]: For 17552/17561 co-relation queries the response was YES. [2024-06-28 01:20:29,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20611 conditions, 6467 events. 3913/6467 cut-off events. For 17552/17561 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 41122 event pairs, 1420 based on Foata normal form. 10/6291 useless extension candidates. Maximal degree in co-relation 20580. Up to 5485 conditions per place. [2024-06-28 01:20:29,072 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 86 selfloop transitions, 21 changer transitions 0/117 dead transitions. [2024-06-28 01:20:29,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 911 flow [2024-06-28 01:20:29,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:20:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:20:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 01:20:29,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2024-06-28 01:20:29,073 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 559 flow. Second operand 6 states and 155 transitions. [2024-06-28 01:20:29,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 911 flow [2024-06-28 01:20:29,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 870 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:20:29,086 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 604 flow [2024-06-28 01:20:29,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=604, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2024-06-28 01:20:29,087 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-28 01:20:29,087 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 604 flow [2024-06-28 01:20:29,087 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 01:20:29,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:29,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:29,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:20:29,088 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 01:20:29,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:29,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1633968495, now seen corresponding path program 2 times [2024-06-28 01:20:29,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:29,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290422075] [2024-06-28 01:20:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:29,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:29,691 INFO 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 01:20:29,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:29,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290422075] [2024-06-28 01:20:29,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290422075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:29,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:29,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:20:29,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985756827] [2024-06-28 01:20:29,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:29,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:20:29,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:29,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:20:29,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:20:29,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:29,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 604 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 01:20:29,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:29,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:29,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:30,480 INFO L124 PetriNetUnfolderBase]: 3898/6542 cut-off events. [2024-06-28 01:20:30,480 INFO L125 PetriNetUnfolderBase]: For 20512/20512 co-relation queries the response was YES. [2024-06-28 01:20:30,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20871 conditions, 6542 events. 3898/6542 cut-off events. For 20512/20512 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 42663 event pairs, 2261 based on Foata normal form. 2/6345 useless extension candidates. Maximal degree in co-relation 20839. Up to 5568 conditions per place. [2024-06-28 01:20:30,511 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 86 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-06-28 01:20:30,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 111 transitions, 881 flow [2024-06-28 01:20:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:20:30,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:20:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:20:30,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-28 01:20:30,513 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 604 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:20:30,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 111 transitions, 881 flow [2024-06-28 01:20:30,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 111 transitions, 847 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:20:30,526 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 632 flow [2024-06-28 01:20:30,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=632, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2024-06-28 01:20:30,527 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-28 01:20:30,527 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 632 flow [2024-06-28 01:20:30,528 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 01:20:30,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:30,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:30,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:20:30,528 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 01:20:30,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash -899061366, now seen corresponding path program 1 times [2024-06-28 01:20:30,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:30,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525460572] [2024-06-28 01:20:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:30,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:31,140 INFO 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 01:20:31,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:31,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525460572] [2024-06-28 01:20:31,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525460572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:31,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:31,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:20:31,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91974261] [2024-06-28 01:20:31,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:31,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:20:31,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:31,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:20:31,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:20:31,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:31,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 632 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 01:20:31,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:31,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:31,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:32,212 INFO L124 PetriNetUnfolderBase]: 4264/7132 cut-off events. [2024-06-28 01:20:32,213 INFO L125 PetriNetUnfolderBase]: For 24167/24184 co-relation queries the response was YES. [2024-06-28 01:20:32,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23567 conditions, 7132 events. 4264/7132 cut-off events. For 24167/24184 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 46280 event pairs, 1579 based on Foata normal form. 18/6951 useless extension candidates. Maximal degree in co-relation 23533. Up to 5625 conditions per place. [2024-06-28 01:20:32,311 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 131 selfloop transitions, 45 changer transitions 0/186 dead transitions. [2024-06-28 01:20:32,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 186 transitions, 1639 flow [2024-06-28 01:20:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:20:32,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:20:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 01:20:32,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-28 01:20:32,313 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 632 flow. Second operand 8 states and 213 transitions. [2024-06-28 01:20:32,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 186 transitions, 1639 flow [2024-06-28 01:20:32,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 186 transitions, 1517 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:20:32,331 INFO L231 Difference]: Finished difference. Result has 92 places, 125 transitions, 1024 flow [2024-06-28 01:20:32,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1024, PETRI_PLACES=92, PETRI_TRANSITIONS=125} [2024-06-28 01:20:32,331 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-28 01:20:32,332 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 125 transitions, 1024 flow [2024-06-28 01:20:32,332 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 01:20:32,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:32,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:32,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:20:32,332 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 01:20:32,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:32,333 INFO L85 PathProgramCache]: Analyzing trace with hash -835884522, now seen corresponding path program 2 times [2024-06-28 01:20:32,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:32,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571288135] [2024-06-28 01:20:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:32,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:33,003 INFO 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 01:20:33,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:33,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571288135] [2024-06-28 01:20:33,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571288135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:33,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:33,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:20:33,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86615951] [2024-06-28 01:20:33,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:33,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:20:33,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:33,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:20:33,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:20:33,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:33,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 125 transitions, 1024 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 01:20:33,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:33,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:33,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:33,898 INFO L124 PetriNetUnfolderBase]: 4498/7383 cut-off events. [2024-06-28 01:20:33,898 INFO L125 PetriNetUnfolderBase]: For 32824/32842 co-relation queries the response was YES. [2024-06-28 01:20:33,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28389 conditions, 7383 events. 4498/7383 cut-off events. For 32824/32842 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 46960 event pairs, 1283 based on Foata normal form. 25/7209 useless extension candidates. Maximal degree in co-relation 28351. Up to 5740 conditions per place. [2024-06-28 01:20:33,945 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 111 selfloop transitions, 62 changer transitions 0/183 dead transitions. [2024-06-28 01:20:33,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 183 transitions, 1712 flow [2024-06-28 01:20:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:20:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:20:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:20:33,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 01:20:33,946 INFO L175 Difference]: Start difference. First operand has 92 places, 125 transitions, 1024 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:20:33,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 183 transitions, 1712 flow [2024-06-28 01:20:33,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 183 transitions, 1678 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-28 01:20:33,979 INFO L231 Difference]: Finished difference. Result has 98 places, 137 transitions, 1260 flow [2024-06-28 01:20:33,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1260, PETRI_PLACES=98, PETRI_TRANSITIONS=137} [2024-06-28 01:20:33,980 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2024-06-28 01:20:33,980 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 137 transitions, 1260 flow [2024-06-28 01:20:33,981 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 01:20:33,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:33,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:33,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:20:33,981 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 01:20:33,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:33,982 INFO L85 PathProgramCache]: Analyzing trace with hash -886316816, now seen corresponding path program 3 times [2024-06-28 01:20:33,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:33,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466736593] [2024-06-28 01:20:33,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:33,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:34,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:34,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466736593] [2024-06-28 01:20:34,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466736593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:34,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:34,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:20:34,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749132073] [2024-06-28 01:20:34,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:34,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:20:34,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:20:34,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:20:34,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:34,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 137 transitions, 1260 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 01:20:34,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:34,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:34,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:35,786 INFO L124 PetriNetUnfolderBase]: 4582/7440 cut-off events. [2024-06-28 01:20:35,786 INFO L125 PetriNetUnfolderBase]: For 42057/42057 co-relation queries the response was YES. [2024-06-28 01:20:35,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30869 conditions, 7440 events. 4582/7440 cut-off events. For 42057/42057 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 47482 event pairs, 2229 based on Foata normal form. 6/7285 useless extension candidates. Maximal degree in co-relation 30828. Up to 6467 conditions per place. [2024-06-28 01:20:35,824 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 145 selfloop transitions, 21 changer transitions 0/176 dead transitions. [2024-06-28 01:20:35,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 176 transitions, 1787 flow [2024-06-28 01:20:35,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:20:35,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:20:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:20:35,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 01:20:35,825 INFO L175 Difference]: Start difference. First operand has 98 places, 137 transitions, 1260 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:20:35,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 176 transitions, 1787 flow [2024-06-28 01:20:35,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 176 transitions, 1699 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 01:20:35,857 INFO L231 Difference]: Finished difference. Result has 102 places, 143 transitions, 1314 flow [2024-06-28 01:20:35,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1314, PETRI_PLACES=102, PETRI_TRANSITIONS=143} [2024-06-28 01:20:35,858 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-28 01:20:35,858 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 143 transitions, 1314 flow [2024-06-28 01:20:35,858 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 01:20:35,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:35,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:35,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:20:35,859 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 01:20:35,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:35,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1879822954, now seen corresponding path program 4 times [2024-06-28 01:20:35,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:35,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904610913] [2024-06-28 01:20:35,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:35,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:36,533 INFO 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 01:20:36,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:36,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904610913] [2024-06-28 01:20:36,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904610913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:36,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:36,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:20:36,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424645576] [2024-06-28 01:20:36,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:36,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:20:36,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:36,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:20:36,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:20:36,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:36,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 143 transitions, 1314 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 01:20:36,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:36,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:36,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:37,523 INFO L124 PetriNetUnfolderBase]: 4566/7423 cut-off events. [2024-06-28 01:20:37,523 INFO L125 PetriNetUnfolderBase]: For 38250/38250 co-relation queries the response was YES. [2024-06-28 01:20:37,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29878 conditions, 7423 events. 4566/7423 cut-off events. For 38250/38250 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 47451 event pairs, 2212 based on Foata normal form. 6/7267 useless extension candidates. Maximal degree in co-relation 29835. Up to 6364 conditions per place. [2024-06-28 01:20:37,570 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 147 selfloop transitions, 32 changer transitions 0/189 dead transitions. [2024-06-28 01:20:37,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 189 transitions, 1917 flow [2024-06-28 01:20:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:20:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:20:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:20:37,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-06-28 01:20:37,572 INFO L175 Difference]: Start difference. First operand has 102 places, 143 transitions, 1314 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:20:37,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 189 transitions, 1917 flow [2024-06-28 01:20:37,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 189 transitions, 1829 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 01:20:37,604 INFO L231 Difference]: Finished difference. Result has 105 places, 149 transitions, 1400 flow [2024-06-28 01:20:37,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1400, PETRI_PLACES=105, PETRI_TRANSITIONS=149} [2024-06-28 01:20:37,604 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-06-28 01:20:37,604 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 149 transitions, 1400 flow [2024-06-28 01:20:37,605 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 01:20:37,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:37,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:37,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:20:37,605 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:37,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:37,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1515467878, now seen corresponding path program 1 times [2024-06-28 01:20:37,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:37,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85138038] [2024-06-28 01:20:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:37,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:38,063 INFO 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 01:20:38,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:38,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85138038] [2024-06-28 01:20:38,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85138038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:38,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:38,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:20:38,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743550250] [2024-06-28 01:20:38,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:38,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:20:38,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:38,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:20:38,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:20:38,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:20:38,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 149 transitions, 1400 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:38,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:38,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:20:38,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:39,112 INFO L124 PetriNetUnfolderBase]: 5984/9431 cut-off events. [2024-06-28 01:20:39,112 INFO L125 PetriNetUnfolderBase]: For 56153/56333 co-relation queries the response was YES. [2024-06-28 01:20:39,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37861 conditions, 9431 events. 5984/9431 cut-off events. For 56153/56333 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 59875 event pairs, 3084 based on Foata normal form. 140/9321 useless extension candidates. Maximal degree in co-relation 37818. Up to 8434 conditions per place. [2024-06-28 01:20:39,177 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 135 selfloop transitions, 12 changer transitions 0/166 dead transitions. [2024-06-28 01:20:39,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 166 transitions, 1766 flow [2024-06-28 01:20:39,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:20:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:20:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 01:20:39,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:20:39,180 INFO L175 Difference]: Start difference. First operand has 105 places, 149 transitions, 1400 flow. Second operand 5 states and 115 transitions. [2024-06-28 01:20:39,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 166 transitions, 1766 flow [2024-06-28 01:20:39,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 166 transitions, 1657 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:20:39,225 INFO L231 Difference]: Finished difference. Result has 104 places, 152 transitions, 1354 flow [2024-06-28 01:20:39,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1354, PETRI_PLACES=104, PETRI_TRANSITIONS=152} [2024-06-28 01:20:39,226 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-28 01:20:39,226 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 152 transitions, 1354 flow [2024-06-28 01:20:39,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:39,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:39,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:39,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:20:39,226 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 01:20:39,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:39,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1431792790, now seen corresponding path program 1 times [2024-06-28 01:20:39,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:39,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431269765] [2024-06-28 01:20:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:39,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:39,958 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 01:20:39,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:39,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431269765] [2024-06-28 01:20:39,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431269765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:39,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:39,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:20:39,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883642073] [2024-06-28 01:20:39,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:39,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:20:39,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:39,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:20:39,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:20:40,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:40,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 152 transitions, 1354 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:40,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:40,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:40,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:41,217 INFO L124 PetriNetUnfolderBase]: 4965/8215 cut-off events. [2024-06-28 01:20:41,217 INFO L125 PetriNetUnfolderBase]: For 50105/50123 co-relation queries the response was YES. [2024-06-28 01:20:41,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33647 conditions, 8215 events. 4965/8215 cut-off events. For 50105/50123 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 53950 event pairs, 1715 based on Foata normal form. 18/7984 useless extension candidates. Maximal degree in co-relation 33603. Up to 6736 conditions per place. [2024-06-28 01:20:41,262 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 169 selfloop transitions, 48 changer transitions 0/228 dead transitions. [2024-06-28 01:20:41,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 228 transitions, 2230 flow [2024-06-28 01:20:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:20:41,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:20:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-28 01:20:41,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-06-28 01:20:41,264 INFO L175 Difference]: Start difference. First operand has 104 places, 152 transitions, 1354 flow. Second operand 9 states and 230 transitions. [2024-06-28 01:20:41,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 228 transitions, 2230 flow [2024-06-28 01:20:41,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 228 transitions, 2193 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:20:41,299 INFO L231 Difference]: Finished difference. Result has 112 places, 171 transitions, 1624 flow [2024-06-28 01:20:41,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1624, PETRI_PLACES=112, PETRI_TRANSITIONS=171} [2024-06-28 01:20:41,300 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-28 01:20:41,300 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 171 transitions, 1624 flow [2024-06-28 01:20:41,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:41,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:41,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:41,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:20:41,300 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 01:20:41,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:41,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1072955654, now seen corresponding path program 2 times [2024-06-28 01:20:41,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:41,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384503947] [2024-06-28 01:20:41,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:41,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:41,818 INFO 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 01:20:41,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:41,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384503947] [2024-06-28 01:20:41,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384503947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:41,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:41,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:20:41,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519623201] [2024-06-28 01:20:41,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:41,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:20:41,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:41,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:20:41,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:20:41,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:41,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 171 transitions, 1624 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 01:20:41,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:41,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:41,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:43,106 INFO L124 PetriNetUnfolderBase]: 5053/8360 cut-off events. [2024-06-28 01:20:43,107 INFO L125 PetriNetUnfolderBase]: For 57630/57652 co-relation queries the response was YES. [2024-06-28 01:20:43,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35828 conditions, 8360 events. 5053/8360 cut-off events. For 57630/57652 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 54990 event pairs, 1745 based on Foata normal form. 22/8127 useless extension candidates. Maximal degree in co-relation 35781. Up to 6700 conditions per place. [2024-06-28 01:20:43,170 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 142 selfloop transitions, 75 changer transitions 0/228 dead transitions. [2024-06-28 01:20:43,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 228 transitions, 2450 flow [2024-06-28 01:20:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:20:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:20:43,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-28 01:20:43,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565476190476191 [2024-06-28 01:20:43,172 INFO L175 Difference]: Start difference. First operand has 112 places, 171 transitions, 1624 flow. Second operand 7 states and 187 transitions. [2024-06-28 01:20:43,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 228 transitions, 2450 flow [2024-06-28 01:20:43,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 228 transitions, 2413 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:20:43,235 INFO L231 Difference]: Finished difference. Result has 118 places, 187 transitions, 1967 flow [2024-06-28 01:20:43,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1967, PETRI_PLACES=118, PETRI_TRANSITIONS=187} [2024-06-28 01:20:43,235 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-28 01:20:43,235 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 187 transitions, 1967 flow [2024-06-28 01:20:43,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 01:20:43,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:43,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:43,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:20:43,236 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:20:43,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:43,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1593862929, now seen corresponding path program 1 times [2024-06-28 01:20:43,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:43,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891685453] [2024-06-28 01:20:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:43,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:43,821 INFO 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 01:20:43,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:43,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891685453] [2024-06-28 01:20:43,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891685453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:43,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:43,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:20:43,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570355273] [2024-06-28 01:20:43,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:43,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:20:43,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:20:43,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:20:43,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:43,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 187 transitions, 1967 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:43,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:43,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:43,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:45,141 INFO L124 PetriNetUnfolderBase]: 5195/8588 cut-off events. [2024-06-28 01:20:45,142 INFO L125 PetriNetUnfolderBase]: For 69260/69272 co-relation queries the response was YES. [2024-06-28 01:20:45,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39468 conditions, 8588 events. 5195/8588 cut-off events. For 69260/69272 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 56724 event pairs, 1701 based on Foata normal form. 11/8337 useless extension candidates. Maximal degree in co-relation 39417. Up to 6686 conditions per place. [2024-06-28 01:20:45,204 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 176 selfloop transitions, 72 changer transitions 0/259 dead transitions. [2024-06-28 01:20:45,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 259 transitions, 3071 flow [2024-06-28 01:20:45,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:20:45,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:20:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-28 01:20:45,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 01:20:45,206 INFO L175 Difference]: Start difference. First operand has 118 places, 187 transitions, 1967 flow. Second operand 8 states and 216 transitions. [2024-06-28 01:20:45,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 259 transitions, 3071 flow [2024-06-28 01:20:45,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 259 transitions, 3018 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:20:45,279 INFO L231 Difference]: Finished difference. Result has 125 places, 203 transitions, 2348 flow [2024-06-28 01:20:45,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1924, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2348, PETRI_PLACES=125, PETRI_TRANSITIONS=203} [2024-06-28 01:20:45,280 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-28 01:20:45,280 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 203 transitions, 2348 flow [2024-06-28 01:20:45,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:45,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:45,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:45,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:20:45,281 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 01:20:45,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:45,281 INFO L85 PathProgramCache]: Analyzing trace with hash -2101097345, now seen corresponding path program 2 times [2024-06-28 01:20:45,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:45,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829535422] [2024-06-28 01:20:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:45,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:45,958 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 01:20:45,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:45,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829535422] [2024-06-28 01:20:45,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829535422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:45,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:45,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:20:45,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781474498] [2024-06-28 01:20:45,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:45,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:20:45,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:45,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:20:45,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:20:46,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:46,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 203 transitions, 2348 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 01:20:46,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:46,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:46,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:47,465 INFO L124 PetriNetUnfolderBase]: 5229/8635 cut-off events. [2024-06-28 01:20:47,465 INFO L125 PetriNetUnfolderBase]: For 70299/70313 co-relation queries the response was YES. [2024-06-28 01:20:47,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40381 conditions, 8635 events. 5229/8635 cut-off events. For 70299/70313 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 56862 event pairs, 1704 based on Foata normal form. 13/8386 useless extension candidates. Maximal degree in co-relation 40327. Up to 6716 conditions per place. [2024-06-28 01:20:47,526 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 185 selfloop transitions, 71 changer transitions 0/267 dead transitions. [2024-06-28 01:20:47,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 267 transitions, 3294 flow [2024-06-28 01:20:47,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:20:47,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:20:47,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 01:20:47,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-06-28 01:20:47,528 INFO L175 Difference]: Start difference. First operand has 125 places, 203 transitions, 2348 flow. Second operand 9 states and 237 transitions. [2024-06-28 01:20:47,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 267 transitions, 3294 flow [2024-06-28 01:20:47,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 267 transitions, 3175 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:20:47,596 INFO L231 Difference]: Finished difference. Result has 130 places, 206 transitions, 2433 flow [2024-06-28 01:20:47,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2433, PETRI_PLACES=130, PETRI_TRANSITIONS=206} [2024-06-28 01:20:47,597 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-28 01:20:47,597 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 206 transitions, 2433 flow [2024-06-28 01:20:47,597 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 01:20:47,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:47,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:47,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:20:47,597 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 01:20:47,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:47,598 INFO L85 PathProgramCache]: Analyzing trace with hash -146430196, now seen corresponding path program 3 times [2024-06-28 01:20:47,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:47,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385923381] [2024-06-28 01:20:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:47,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:20:48,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:48,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385923381] [2024-06-28 01:20:48,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385923381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:48,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:48,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:20:48,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111132166] [2024-06-28 01:20:48,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:48,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:20:48,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:48,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:20:48,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:20:48,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:48,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 206 transitions, 2433 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:48,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:48,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:48,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:49,576 INFO L124 PetriNetUnfolderBase]: 5127/8340 cut-off events. [2024-06-28 01:20:49,576 INFO L125 PetriNetUnfolderBase]: For 74544/74558 co-relation queries the response was YES. [2024-06-28 01:20:49,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39991 conditions, 8340 events. 5127/8340 cut-off events. For 74544/74558 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 53689 event pairs, 1396 based on Foata normal form. 16/8117 useless extension candidates. Maximal degree in co-relation 39936. Up to 6795 conditions per place. [2024-06-28 01:20:49,648 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 173 selfloop transitions, 78 changer transitions 0/262 dead transitions. [2024-06-28 01:20:49,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 262 transitions, 3251 flow [2024-06-28 01:20:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:20:49,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:20:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:20:49,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-28 01:20:49,650 INFO L175 Difference]: Start difference. First operand has 130 places, 206 transitions, 2433 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:20:49,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 262 transitions, 3251 flow [2024-06-28 01:20:49,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 262 transitions, 3059 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:20:49,749 INFO L231 Difference]: Finished difference. Result has 132 places, 213 transitions, 2539 flow [2024-06-28 01:20:49,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2539, PETRI_PLACES=132, PETRI_TRANSITIONS=213} [2024-06-28 01:20:49,749 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 78 predicate places. [2024-06-28 01:20:49,749 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 213 transitions, 2539 flow [2024-06-28 01:20:49,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:49,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:49,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:49,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:20:49,750 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 01:20:49,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:49,750 INFO L85 PathProgramCache]: Analyzing trace with hash -142615181, now seen corresponding path program 3 times [2024-06-28 01:20:49,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:49,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478091779] [2024-06-28 01:20:49,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:49,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:50,511 INFO 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 01:20:50,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:50,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478091779] [2024-06-28 01:20:50,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478091779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:50,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:50,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:20:50,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473122472] [2024-06-28 01:20:50,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:50,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:20:50,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:50,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:20:50,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:20:50,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:50,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 213 transitions, 2539 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 01:20:50,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:50,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:50,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:51,803 INFO L124 PetriNetUnfolderBase]: 5249/8526 cut-off events. [2024-06-28 01:20:51,804 INFO L125 PetriNetUnfolderBase]: For 81197/81211 co-relation queries the response was YES. [2024-06-28 01:20:51,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41456 conditions, 8526 events. 5249/8526 cut-off events. For 81197/81211 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54933 event pairs, 1346 based on Foata normal form. 17/8303 useless extension candidates. Maximal degree in co-relation 41399. Up to 6520 conditions per place. [2024-06-28 01:20:51,874 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 172 selfloop transitions, 99 changer transitions 0/282 dead transitions. [2024-06-28 01:20:51,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 282 transitions, 3609 flow [2024-06-28 01:20:51,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:20:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:20:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:20:51,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-28 01:20:51,876 INFO L175 Difference]: Start difference. First operand has 132 places, 213 transitions, 2539 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:20:51,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 282 transitions, 3609 flow [2024-06-28 01:20:51,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 282 transitions, 3453 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 01:20:52,000 INFO L231 Difference]: Finished difference. Result has 135 places, 224 transitions, 2770 flow [2024-06-28 01:20:52,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2770, PETRI_PLACES=135, PETRI_TRANSITIONS=224} [2024-06-28 01:20:52,001 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-28 01:20:52,001 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 224 transitions, 2770 flow [2024-06-28 01:20:52,001 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 01:20:52,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:52,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:52,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:20:52,001 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 01:20:52,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:52,001 INFO L85 PathProgramCache]: Analyzing trace with hash -142620761, now seen corresponding path program 4 times [2024-06-28 01:20:52,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:52,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379027304] [2024-06-28 01:20:52,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:52,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:52,632 INFO 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 01:20:52,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:52,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379027304] [2024-06-28 01:20:52,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379027304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:52,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:52,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:20:52,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131390902] [2024-06-28 01:20:52,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:52,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:20:52,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:52,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:20:52,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:20:52,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:52,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 224 transitions, 2770 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:52,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:52,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:52,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:53,832 INFO L124 PetriNetUnfolderBase]: 5491/9028 cut-off events. [2024-06-28 01:20:53,833 INFO L125 PetriNetUnfolderBase]: For 93631/93658 co-relation queries the response was YES. [2024-06-28 01:20:53,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44006 conditions, 9028 events. 5491/9028 cut-off events. For 93631/93658 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 60028 event pairs, 1901 based on Foata normal form. 15/8735 useless extension candidates. Maximal degree in co-relation 43948. Up to 6810 conditions per place. [2024-06-28 01:20:53,925 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 161 selfloop transitions, 113 changer transitions 0/285 dead transitions. [2024-06-28 01:20:53,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 285 transitions, 3804 flow [2024-06-28 01:20:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:20:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:20:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 01:20:53,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-06-28 01:20:53,927 INFO L175 Difference]: Start difference. First operand has 135 places, 224 transitions, 2770 flow. Second operand 7 states and 188 transitions. [2024-06-28 01:20:53,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 285 transitions, 3804 flow [2024-06-28 01:20:54,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 285 transitions, 3496 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 01:20:54,067 INFO L231 Difference]: Finished difference. Result has 135 places, 232 transitions, 2846 flow [2024-06-28 01:20:54,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2482, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2846, PETRI_PLACES=135, PETRI_TRANSITIONS=232} [2024-06-28 01:20:54,068 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-28 01:20:54,068 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 232 transitions, 2846 flow [2024-06-28 01:20:54,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:54,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:54,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:54,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:20:54,068 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 01:20:54,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:54,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1706016295, now seen corresponding path program 5 times [2024-06-28 01:20:54,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:54,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791470745] [2024-06-28 01:20:54,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:54,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:54,719 INFO 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 01:20:54,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:54,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791470745] [2024-06-28 01:20:54,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791470745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:54,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:54,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:20:54,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613694686] [2024-06-28 01:20:54,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:54,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:20:54,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:54,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:20:54,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:20:54,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:54,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 232 transitions, 2846 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 01:20:54,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:54,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:54,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:56,054 INFO L124 PetriNetUnfolderBase]: 5555/8891 cut-off events. [2024-06-28 01:20:56,054 INFO L125 PetriNetUnfolderBase]: For 95645/95657 co-relation queries the response was YES. [2024-06-28 01:20:56,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44735 conditions, 8891 events. 5555/8891 cut-off events. For 95645/95657 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 57680 event pairs, 2363 based on Foata normal form. 8/8685 useless extension candidates. Maximal degree in co-relation 44677. Up to 7664 conditions per place. [2024-06-28 01:20:56,134 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 245 selfloop transitions, 33 changer transitions 0/289 dead transitions. [2024-06-28 01:20:56,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 289 transitions, 3808 flow [2024-06-28 01:20:56,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:20:56,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:20:56,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:20:56,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-28 01:20:56,136 INFO L175 Difference]: Start difference. First operand has 135 places, 232 transitions, 2846 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:20:56,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 289 transitions, 3808 flow [2024-06-28 01:20:56,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 289 transitions, 3572 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 01:20:56,252 INFO L231 Difference]: Finished difference. Result has 138 places, 243 transitions, 2905 flow [2024-06-28 01:20:56,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2621, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2905, PETRI_PLACES=138, PETRI_TRANSITIONS=243} [2024-06-28 01:20:56,252 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 84 predicate places. [2024-06-28 01:20:56,253 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 243 transitions, 2905 flow [2024-06-28 01:20:56,253 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 01:20:56,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:56,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:56,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:20:56,253 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 01:20:56,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:56,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1855031795, now seen corresponding path program 6 times [2024-06-28 01:20:56,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:56,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976559502] [2024-06-28 01:20:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:56,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:56,941 INFO 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 01:20:56,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:56,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976559502] [2024-06-28 01:20:56,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976559502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:56,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:56,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:20:56,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292213735] [2024-06-28 01:20:56,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:56,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:20:56,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:56,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:20:56,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:20:57,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:20:57,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 243 transitions, 2905 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 01:20:57,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:57,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:20:57,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:20:58,310 INFO L124 PetriNetUnfolderBase]: 5533/8868 cut-off events. [2024-06-28 01:20:58,310 INFO L125 PetriNetUnfolderBase]: For 92848/92860 co-relation queries the response was YES. [2024-06-28 01:20:58,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43585 conditions, 8868 events. 5533/8868 cut-off events. For 92848/92860 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 57696 event pairs, 2332 based on Foata normal form. 8/8660 useless extension candidates. Maximal degree in co-relation 43527. Up to 7553 conditions per place. [2024-06-28 01:20:58,387 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 241 selfloop transitions, 47 changer transitions 0/299 dead transitions. [2024-06-28 01:20:58,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 299 transitions, 3785 flow [2024-06-28 01:20:58,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:20:58,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:20:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:20:58,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 01:20:58,388 INFO L175 Difference]: Start difference. First operand has 138 places, 243 transitions, 2905 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:20:58,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 299 transitions, 3785 flow [2024-06-28 01:20:58,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 299 transitions, 3584 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-06-28 01:20:58,527 INFO L231 Difference]: Finished difference. Result has 140 places, 243 transitions, 2815 flow [2024-06-28 01:20:58,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2815, PETRI_PLACES=140, PETRI_TRANSITIONS=243} [2024-06-28 01:20:58,527 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2024-06-28 01:20:58,527 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 243 transitions, 2815 flow [2024-06-28 01:20:58,527 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 01:20:58,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:20:58,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:20:58,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:20:58,528 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 01:20:58,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:20:58,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1863584013, now seen corresponding path program 1 times [2024-06-28 01:20:58,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:20:58,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767876074] [2024-06-28 01:20:58,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:20:58,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:20:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:20:59,633 INFO 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 01:20:59,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:20:59,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767876074] [2024-06-28 01:20:59,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767876074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:20:59,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:20:59,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:20:59,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273272802] [2024-06-28 01:20:59,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:20:59,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:20:59,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:20:59,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:20:59,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:20:59,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:20:59,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 243 transitions, 2815 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:20:59,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:20:59,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:20:59,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:01,299 INFO L124 PetriNetUnfolderBase]: 6709/10661 cut-off events. [2024-06-28 01:21:01,299 INFO L125 PetriNetUnfolderBase]: For 107056/107068 co-relation queries the response was YES. [2024-06-28 01:21:01,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50625 conditions, 10661 events. 6709/10661 cut-off events. For 107056/107068 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 69114 event pairs, 2900 based on Foata normal form. 4/10379 useless extension candidates. Maximal degree in co-relation 50566. Up to 9335 conditions per place. [2024-06-28 01:21:01,377 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 255 selfloop transitions, 27 changer transitions 0/292 dead transitions. [2024-06-28 01:21:01,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 292 transitions, 3608 flow [2024-06-28 01:21:01,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:01,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:01,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:21:01,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 01:21:01,378 INFO L175 Difference]: Start difference. First operand has 140 places, 243 transitions, 2815 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:21:01,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 292 transitions, 3608 flow [2024-06-28 01:21:01,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 292 transitions, 3348 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 01:21:01,481 INFO L231 Difference]: Finished difference. Result has 141 places, 250 transitions, 2698 flow [2024-06-28 01:21:01,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2698, PETRI_PLACES=141, PETRI_TRANSITIONS=250} [2024-06-28 01:21:01,481 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 87 predicate places. [2024-06-28 01:21:01,482 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 250 transitions, 2698 flow [2024-06-28 01:21:01,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:01,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:01,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:01,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:21:01,482 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:01,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:01,482 INFO L85 PathProgramCache]: Analyzing trace with hash -265134950, now seen corresponding path program 1 times [2024-06-28 01:21:01,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:01,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342333889] [2024-06-28 01:21:01,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:01,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:02,015 INFO 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 01:21:02,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:02,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342333889] [2024-06-28 01:21:02,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342333889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:02,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:02,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:21:02,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769156564] [2024-06-28 01:21:02,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:02,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:21:02,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:02,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:21:02,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:21:02,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:21:02,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 250 transitions, 2698 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 01:21:02,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:02,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:21:02,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:03,547 INFO L124 PetriNetUnfolderBase]: 6769/10681 cut-off events. [2024-06-28 01:21:03,547 INFO L125 PetriNetUnfolderBase]: For 107057/107156 co-relation queries the response was YES. [2024-06-28 01:21:03,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50281 conditions, 10681 events. 6769/10681 cut-off events. For 107057/107156 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 68676 event pairs, 3188 based on Foata normal form. 67/10481 useless extension candidates. Maximal degree in co-relation 50220. Up to 9490 conditions per place. [2024-06-28 01:21:03,632 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 224 selfloop transitions, 15 changer transitions 0/274 dead transitions. [2024-06-28 01:21:03,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 274 transitions, 3286 flow [2024-06-28 01:21:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:21:03,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:21:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 01:21:03,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-28 01:21:03,633 INFO L175 Difference]: Start difference. First operand has 141 places, 250 transitions, 2698 flow. Second operand 6 states and 137 transitions. [2024-06-28 01:21:03,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 274 transitions, 3286 flow [2024-06-28 01:21:03,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 274 transitions, 3213 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:03,734 INFO L231 Difference]: Finished difference. Result has 142 places, 253 transitions, 2699 flow [2024-06-28 01:21:03,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2625, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2699, PETRI_PLACES=142, PETRI_TRANSITIONS=253} [2024-06-28 01:21:03,735 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 88 predicate places. [2024-06-28 01:21:03,735 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 253 transitions, 2699 flow [2024-06-28 01:21:03,735 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 01:21:03,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:03,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:03,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:21:03,736 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 01:21:03,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:03,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1435962693, now seen corresponding path program 1 times [2024-06-28 01:21:03,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:03,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075254538] [2024-06-28 01:21:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:03,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:04,537 INFO 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 01:21:04,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:04,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075254538] [2024-06-28 01:21:04,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075254538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:04,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:04,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:04,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285453824] [2024-06-28 01:21:04,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:04,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:04,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:04,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:04,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:04,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:04,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 253 transitions, 2699 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:04,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:04,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:04,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:06,082 INFO L124 PetriNetUnfolderBase]: 6218/9834 cut-off events. [2024-06-28 01:21:06,082 INFO L125 PetriNetUnfolderBase]: For 109365/109383 co-relation queries the response was YES. [2024-06-28 01:21:06,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48671 conditions, 9834 events. 6218/9834 cut-off events. For 109365/109383 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 63514 event pairs, 1975 based on Foata normal form. 20/9636 useless extension candidates. Maximal degree in co-relation 48609. Up to 8274 conditions per place. [2024-06-28 01:21:06,170 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 252 selfloop transitions, 54 changer transitions 0/318 dead transitions. [2024-06-28 01:21:06,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 318 transitions, 3717 flow [2024-06-28 01:21:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:21:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:21:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:21:06,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-28 01:21:06,171 INFO L175 Difference]: Start difference. First operand has 142 places, 253 transitions, 2699 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:21:06,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 318 transitions, 3717 flow [2024-06-28 01:21:06,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 318 transitions, 3667 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:21:06,328 INFO L231 Difference]: Finished difference. Result has 148 places, 260 transitions, 2846 flow [2024-06-28 01:21:06,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2649, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2846, PETRI_PLACES=148, PETRI_TRANSITIONS=260} [2024-06-28 01:21:06,329 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-28 01:21:06,329 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 260 transitions, 2846 flow [2024-06-28 01:21:06,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:06,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:06,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:06,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:21:06,330 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 01:21:06,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:06,330 INFO L85 PathProgramCache]: Analyzing trace with hash 489349955, now seen corresponding path program 2 times [2024-06-28 01:21:06,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:06,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705472881] [2024-06-28 01:21:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:06,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:07,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:07,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:07,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705472881] [2024-06-28 01:21:07,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705472881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:07,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:07,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:07,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822930395] [2024-06-28 01:21:07,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:07,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:07,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:07,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:07,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:07,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:07,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 260 transitions, 2846 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:07,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:07,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:07,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:08,798 INFO L124 PetriNetUnfolderBase]: 6222/9839 cut-off events. [2024-06-28 01:21:08,798 INFO L125 PetriNetUnfolderBase]: For 117263/117281 co-relation queries the response was YES. [2024-06-28 01:21:08,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49871 conditions, 9839 events. 6222/9839 cut-off events. For 117263/117281 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 63488 event pairs, 2002 based on Foata normal form. 20/9663 useless extension candidates. Maximal degree in co-relation 49807. Up to 8407 conditions per place. [2024-06-28 01:21:08,890 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 258 selfloop transitions, 54 changer transitions 0/324 dead transitions. [2024-06-28 01:21:08,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 324 transitions, 3788 flow [2024-06-28 01:21:08,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:21:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:21:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-28 01:21:08,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270833333333333 [2024-06-28 01:21:08,892 INFO L175 Difference]: Start difference. First operand has 148 places, 260 transitions, 2846 flow. Second operand 10 states and 253 transitions. [2024-06-28 01:21:08,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 324 transitions, 3788 flow [2024-06-28 01:21:09,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 324 transitions, 3688 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:09,047 INFO L231 Difference]: Finished difference. Result has 153 places, 262 transitions, 2897 flow [2024-06-28 01:21:09,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2756, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2897, PETRI_PLACES=153, PETRI_TRANSITIONS=262} [2024-06-28 01:21:09,048 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-28 01:21:09,048 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 262 transitions, 2897 flow [2024-06-28 01:21:09,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:09,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:09,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:09,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:21:09,049 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 01:21:09,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:09,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1972485017, now seen corresponding path program 1 times [2024-06-28 01:21:09,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:09,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906655861] [2024-06-28 01:21:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:09,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:09,821 INFO 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 01:21:09,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:09,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906655861] [2024-06-28 01:21:09,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906655861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:09,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:09,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:09,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969334346] [2024-06-28 01:21:09,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:09,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:09,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:09,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:09,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:09,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:09,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 262 transitions, 2897 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:09,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:09,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:09,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:11,515 INFO L124 PetriNetUnfolderBase]: 6363/10129 cut-off events. [2024-06-28 01:21:11,515 INFO L125 PetriNetUnfolderBase]: For 125836/125854 co-relation queries the response was YES. [2024-06-28 01:21:11,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51375 conditions, 10129 events. 6363/10129 cut-off events. For 125836/125854 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 66092 event pairs, 1871 based on Foata normal form. 17/9925 useless extension candidates. Maximal degree in co-relation 51309. Up to 7844 conditions per place. [2024-06-28 01:21:11,609 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 226 selfloop transitions, 108 changer transitions 0/346 dead transitions. [2024-06-28 01:21:11,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 346 transitions, 4087 flow [2024-06-28 01:21:11,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:21:11,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:21:11,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 288 transitions. [2024-06-28 01:21:11,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-28 01:21:11,612 INFO L175 Difference]: Start difference. First operand has 153 places, 262 transitions, 2897 flow. Second operand 11 states and 288 transitions. [2024-06-28 01:21:11,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 346 transitions, 4087 flow [2024-06-28 01:21:11,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 346 transitions, 3970 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 01:21:11,763 INFO L231 Difference]: Finished difference. Result has 156 places, 268 transitions, 3075 flow [2024-06-28 01:21:11,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2780, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3075, PETRI_PLACES=156, PETRI_TRANSITIONS=268} [2024-06-28 01:21:11,764 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 102 predicate places. [2024-06-28 01:21:11,764 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 268 transitions, 3075 flow [2024-06-28 01:21:11,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:11,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:11,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:11,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:21:11,765 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 01:21:11,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:11,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1954321409, now seen corresponding path program 3 times [2024-06-28 01:21:11,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:11,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045878037] [2024-06-28 01:21:11,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:12,282 INFO 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 01:21:12,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:12,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045878037] [2024-06-28 01:21:12,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045878037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:12,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:12,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:12,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986341186] [2024-06-28 01:21:12,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:12,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:12,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:12,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:12,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:12,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:12,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 268 transitions, 3075 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:12,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:12,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:12,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:13,844 INFO L124 PetriNetUnfolderBase]: 6570/10187 cut-off events. [2024-06-28 01:21:13,844 INFO L125 PetriNetUnfolderBase]: For 139354/139385 co-relation queries the response was YES. [2024-06-28 01:21:13,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54180 conditions, 10187 events. 6570/10187 cut-off events. For 139354/139385 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 64316 event pairs, 1215 based on Foata normal form. 32/10096 useless extension candidates. Maximal degree in co-relation 54113. Up to 8203 conditions per place. [2024-06-28 01:21:13,938 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 222 selfloop transitions, 105 changer transitions 0/339 dead transitions. [2024-06-28 01:21:13,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 339 transitions, 4271 flow [2024-06-28 01:21:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:21:13,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 01:21:13,939 INFO L175 Difference]: Start difference. First operand has 156 places, 268 transitions, 3075 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:21:13,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 339 transitions, 4271 flow [2024-06-28 01:21:14,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 339 transitions, 4125 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:21:14,111 INFO L231 Difference]: Finished difference. Result has 159 places, 290 transitions, 3411 flow [2024-06-28 01:21:14,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3411, PETRI_PLACES=159, PETRI_TRANSITIONS=290} [2024-06-28 01:21:14,112 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 105 predicate places. [2024-06-28 01:21:14,112 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 290 transitions, 3411 flow [2024-06-28 01:21:14,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:14,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:14,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:14,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:21:14,112 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 01:21:14,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1065735501, now seen corresponding path program 4 times [2024-06-28 01:21:14,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:14,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762945157] [2024-06-28 01:21:14,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:14,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:14,784 INFO 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 01:21:14,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:14,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762945157] [2024-06-28 01:21:14,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762945157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:14,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:14,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:14,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080953419] [2024-06-28 01:21:14,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:14,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:14,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:14,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:14,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:14,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:14,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 290 transitions, 3411 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:14,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:14,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:14,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:16,559 INFO L124 PetriNetUnfolderBase]: 7226/11589 cut-off events. [2024-06-28 01:21:16,559 INFO L125 PetriNetUnfolderBase]: For 162143/162171 co-relation queries the response was YES. [2024-06-28 01:21:16,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62727 conditions, 11589 events. 7226/11589 cut-off events. For 162143/162171 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 78389 event pairs, 1941 based on Foata normal form. 30/11366 useless extension candidates. Maximal degree in co-relation 62656. Up to 9358 conditions per place. [2024-06-28 01:21:16,683 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 304 selfloop transitions, 124 changer transitions 0/440 dead transitions. [2024-06-28 01:21:16,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 440 transitions, 6018 flow [2024-06-28 01:21:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:21:16,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:21:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 01:21:16,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439814814814815 [2024-06-28 01:21:16,685 INFO L175 Difference]: Start difference. First operand has 159 places, 290 transitions, 3411 flow. Second operand 9 states and 235 transitions. [2024-06-28 01:21:16,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 440 transitions, 6018 flow [2024-06-28 01:21:17,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 440 transitions, 5766 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-28 01:21:17,030 INFO L231 Difference]: Finished difference. Result has 167 places, 367 transitions, 4819 flow [2024-06-28 01:21:17,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3274, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4819, PETRI_PLACES=167, PETRI_TRANSITIONS=367} [2024-06-28 01:21:17,030 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 113 predicate places. [2024-06-28 01:21:17,030 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 367 transitions, 4819 flow [2024-06-28 01:21:17,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:17,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:17,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:17,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:21:17,031 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 01:21:17,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1098148915, now seen corresponding path program 2 times [2024-06-28 01:21:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:17,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600294166] [2024-06-28 01:21:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:17,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:17,647 INFO 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 01:21:17,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:17,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600294166] [2024-06-28 01:21:17,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600294166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:17,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:17,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:17,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626642500] [2024-06-28 01:21:17,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:17,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:17,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:17,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:17,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:17,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:17,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 367 transitions, 4819 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:17,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:17,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:17,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:19,728 INFO L124 PetriNetUnfolderBase]: 7486/12091 cut-off events. [2024-06-28 01:21:19,729 INFO L125 PetriNetUnfolderBase]: For 179399/179431 co-relation queries the response was YES. [2024-06-28 01:21:19,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68061 conditions, 12091 events. 7486/12091 cut-off events. For 179399/179431 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 82680 event pairs, 1801 based on Foata normal form. 29/11841 useless extension candidates. Maximal degree in co-relation 67986. Up to 9492 conditions per place. [2024-06-28 01:21:19,834 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 347 selfloop transitions, 149 changer transitions 0/508 dead transitions. [2024-06-28 01:21:19,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 508 transitions, 7313 flow [2024-06-28 01:21:19,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:21:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:21:19,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-28 01:21:19,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5671296296296297 [2024-06-28 01:21:19,835 INFO L175 Difference]: Start difference. First operand has 167 places, 367 transitions, 4819 flow. Second operand 9 states and 245 transitions. [2024-06-28 01:21:19,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 508 transitions, 7313 flow [2024-06-28 01:21:20,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 508 transitions, 7237 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-06-28 01:21:20,071 INFO L231 Difference]: Finished difference. Result has 178 places, 426 transitions, 5951 flow [2024-06-28 01:21:20,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4743, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5951, PETRI_PLACES=178, PETRI_TRANSITIONS=426} [2024-06-28 01:21:20,072 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 124 predicate places. [2024-06-28 01:21:20,072 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 426 transitions, 5951 flow [2024-06-28 01:21:20,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:20,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:20,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:20,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:21:20,072 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 01:21:20,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:20,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1065795951, now seen corresponding path program 5 times [2024-06-28 01:21:20,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:20,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668402732] [2024-06-28 01:21:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:20,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:20,716 INFO 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 01:21:20,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:20,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668402732] [2024-06-28 01:21:20,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668402732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:20,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:20,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:20,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774938269] [2024-06-28 01:21:20,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:20,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:20,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:20,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:20,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:20,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 426 transitions, 5951 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:20,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:20,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:20,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:22,885 INFO L124 PetriNetUnfolderBase]: 7617/12371 cut-off events. [2024-06-28 01:21:22,885 INFO L125 PetriNetUnfolderBase]: For 206639/206657 co-relation queries the response was YES. [2024-06-28 01:21:22,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75312 conditions, 12371 events. 7617/12371 cut-off events. For 206639/206657 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 85771 event pairs, 1850 based on Foata normal form. 22/12098 useless extension candidates. Maximal degree in co-relation 75231. Up to 10260 conditions per place. [2024-06-28 01:21:23,014 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 386 selfloop transitions, 103 changer transitions 0/501 dead transitions. [2024-06-28 01:21:23,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 501 transitions, 7563 flow [2024-06-28 01:21:23,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:21:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:21:23,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-28 01:21:23,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-06-28 01:21:23,015 INFO L175 Difference]: Start difference. First operand has 178 places, 426 transitions, 5951 flow. Second operand 9 states and 231 transitions. [2024-06-28 01:21:23,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 501 transitions, 7563 flow [2024-06-28 01:21:23,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 501 transitions, 7445 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-28 01:21:23,327 INFO L231 Difference]: Finished difference. Result has 184 places, 434 transitions, 6190 flow [2024-06-28 01:21:23,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5838, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6190, PETRI_PLACES=184, PETRI_TRANSITIONS=434} [2024-06-28 01:21:23,327 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2024-06-28 01:21:23,327 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 434 transitions, 6190 flow [2024-06-28 01:21:23,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:23,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:23,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:23,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:21:23,328 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:23,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:23,328 INFO L85 PathProgramCache]: Analyzing trace with hash -709684629, now seen corresponding path program 3 times [2024-06-28 01:21:23,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:23,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490861611] [2024-06-28 01:21:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:23,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:24,130 INFO 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 01:21:24,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:24,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490861611] [2024-06-28 01:21:24,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490861611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:24,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:24,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:24,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580119678] [2024-06-28 01:21:24,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:24,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:24,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:24,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:24,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:24,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:24,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 434 transitions, 6190 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:24,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:24,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:24,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:26,602 INFO L124 PetriNetUnfolderBase]: 7943/12945 cut-off events. [2024-06-28 01:21:26,603 INFO L125 PetriNetUnfolderBase]: For 225224/225246 co-relation queries the response was YES. [2024-06-28 01:21:26,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79921 conditions, 12945 events. 7943/12945 cut-off events. For 225224/225246 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 90559 event pairs, 2071 based on Foata normal form. 23/12629 useless extension candidates. Maximal degree in co-relation 79838. Up to 10134 conditions per place. [2024-06-28 01:21:26,727 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 379 selfloop transitions, 160 changer transitions 0/551 dead transitions. [2024-06-28 01:21:26,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 551 transitions, 8499 flow [2024-06-28 01:21:26,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:21:26,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:21:26,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-06-28 01:21:26,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5541666666666667 [2024-06-28 01:21:26,728 INFO L175 Difference]: Start difference. First operand has 184 places, 434 transitions, 6190 flow. Second operand 10 states and 266 transitions. [2024-06-28 01:21:26,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 551 transitions, 8499 flow [2024-06-28 01:21:27,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 551 transitions, 8281 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 01:21:27,041 INFO L231 Difference]: Finished difference. Result has 188 places, 461 transitions, 6862 flow [2024-06-28 01:21:27,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5993, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6862, PETRI_PLACES=188, PETRI_TRANSITIONS=461} [2024-06-28 01:21:27,042 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-28 01:21:27,042 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 461 transitions, 6862 flow [2024-06-28 01:21:27,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:27,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:27,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:27,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:21:27,042 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 01:21:27,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:27,042 INFO L85 PathProgramCache]: Analyzing trace with hash -709506999, now seen corresponding path program 4 times [2024-06-28 01:21:27,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:27,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712478776] [2024-06-28 01:21:27,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:27,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:27,998 INFO 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 01:21:27,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:27,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712478776] [2024-06-28 01:21:27,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712478776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:27,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:27,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:21:27,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263535525] [2024-06-28 01:21:27,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:27,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:21:27,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:28,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:21:28,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:21:28,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:28,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 461 transitions, 6862 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 01:21:28,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:28,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:28,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:30,771 INFO L124 PetriNetUnfolderBase]: 7993/13012 cut-off events. [2024-06-28 01:21:30,771 INFO L125 PetriNetUnfolderBase]: For 238229/238259 co-relation queries the response was YES. [2024-06-28 01:21:30,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81493 conditions, 13012 events. 7993/13012 cut-off events. For 238229/238259 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 90986 event pairs, 2124 based on Foata normal form. 31/12705 useless extension candidates. Maximal degree in co-relation 81409. Up to 10408 conditions per place. [2024-06-28 01:21:30,913 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 397 selfloop transitions, 137 changer transitions 0/546 dead transitions. [2024-06-28 01:21:30,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 546 transitions, 8606 flow [2024-06-28 01:21:30,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:21:30,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:21:30,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-28 01:21:30,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2024-06-28 01:21:30,915 INFO L175 Difference]: Start difference. First operand has 188 places, 461 transitions, 6862 flow. Second operand 10 states and 259 transitions. [2024-06-28 01:21:30,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 546 transitions, 8606 flow [2024-06-28 01:21:31,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 546 transitions, 8387 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:21:31,322 INFO L231 Difference]: Finished difference. Result has 192 places, 469 transitions, 7088 flow [2024-06-28 01:21:31,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6643, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7088, PETRI_PLACES=192, PETRI_TRANSITIONS=469} [2024-06-28 01:21:31,323 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 138 predicate places. [2024-06-28 01:21:31,323 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 469 transitions, 7088 flow [2024-06-28 01:21:31,323 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 01:21:31,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:31,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:31,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:21:31,324 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:31,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:31,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1692274750, now seen corresponding path program 1 times [2024-06-28 01:21:31,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:31,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617402137] [2024-06-28 01:21:31,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:31,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:31,779 INFO 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 01:21:31,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:31,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617402137] [2024-06-28 01:21:31,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617402137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:31,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:31,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:21:31,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148270692] [2024-06-28 01:21:31,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:31,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:21:31,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:31,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:21:31,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:21:31,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:21:31,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 469 transitions, 7088 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 01:21:31,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:31,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:21:31,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:33,969 INFO L124 PetriNetUnfolderBase]: 8614/14472 cut-off events. [2024-06-28 01:21:33,969 INFO L125 PetriNetUnfolderBase]: For 255485/255630 co-relation queries the response was YES. [2024-06-28 01:21:34,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85995 conditions, 14472 events. 8614/14472 cut-off events. For 255485/255630 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 104922 event pairs, 3266 based on Foata normal form. 89/14065 useless extension candidates. Maximal degree in co-relation 85909. Up to 11999 conditions per place. [2024-06-28 01:21:34,137 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 405 selfloop transitions, 31 changer transitions 0/520 dead transitions. [2024-06-28 01:21:34,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 520 transitions, 8441 flow [2024-06-28 01:21:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:34,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:21:34,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:21:34,138 INFO L175 Difference]: Start difference. First operand has 192 places, 469 transitions, 7088 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:21:34,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 520 transitions, 8441 flow [2024-06-28 01:21:34,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 520 transitions, 8105 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 01:21:34,574 INFO L231 Difference]: Finished difference. Result has 193 places, 490 transitions, 7132 flow [2024-06-28 01:21:34,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6760, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7132, PETRI_PLACES=193, PETRI_TRANSITIONS=490} [2024-06-28 01:21:34,575 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 139 predicate places. [2024-06-28 01:21:34,575 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 490 transitions, 7132 flow [2024-06-28 01:21:34,575 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 01:21:34,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:34,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:34,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:21:34,575 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 01:21:34,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:34,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1321936426, now seen corresponding path program 1 times [2024-06-28 01:21:34,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:34,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285706618] [2024-06-28 01:21:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:34,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:35,291 INFO 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 01:21:35,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:35,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285706618] [2024-06-28 01:21:35,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285706618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:35,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:35,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:21:35,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471679425] [2024-06-28 01:21:35,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:35,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:21:35,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:35,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:21:35,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:21:35,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:35,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 490 transitions, 7132 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:35,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:35,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:35,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:37,889 INFO L124 PetriNetUnfolderBase]: 8571/14203 cut-off events. [2024-06-28 01:21:37,889 INFO L125 PetriNetUnfolderBase]: For 300492/300580 co-relation queries the response was YES. [2024-06-28 01:21:37,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89763 conditions, 14203 events. 8571/14203 cut-off events. For 300492/300580 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 101882 event pairs, 2111 based on Foata normal form. 49/13797 useless extension candidates. Maximal degree in co-relation 89674. Up to 9550 conditions per place. [2024-06-28 01:21:38,065 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 384 selfloop transitions, 196 changer transitions 0/596 dead transitions. [2024-06-28 01:21:38,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 596 transitions, 9581 flow [2024-06-28 01:21:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:21:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:21:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 278 transitions. [2024-06-28 01:21:38,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5791666666666667 [2024-06-28 01:21:38,069 INFO L175 Difference]: Start difference. First operand has 193 places, 490 transitions, 7132 flow. Second operand 10 states and 278 transitions. [2024-06-28 01:21:38,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 596 transitions, 9581 flow [2024-06-28 01:21:38,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 596 transitions, 9503 flow, removed 38 selfloop flow, removed 1 redundant places. [2024-06-28 01:21:38,581 INFO L231 Difference]: Finished difference. Result has 202 places, 492 transitions, 7511 flow [2024-06-28 01:21:38,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7054, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7511, PETRI_PLACES=202, PETRI_TRANSITIONS=492} [2024-06-28 01:21:38,582 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 148 predicate places. [2024-06-28 01:21:38,582 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 492 transitions, 7511 flow [2024-06-28 01:21:38,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:38,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:38,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:38,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:21:38,583 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 01:21:38,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1414206105, now seen corresponding path program 6 times [2024-06-28 01:21:38,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:38,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651837908] [2024-06-28 01:21:38,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:38,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:39,406 INFO 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 01:21:39,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:39,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651837908] [2024-06-28 01:21:39,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651837908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:39,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:39,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:39,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347521787] [2024-06-28 01:21:39,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:39,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:39,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:39,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:39,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:39,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:39,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 492 transitions, 7511 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:39,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:39,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:39,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:41,964 INFO L124 PetriNetUnfolderBase]: 8646/14432 cut-off events. [2024-06-28 01:21:41,964 INFO L125 PetriNetUnfolderBase]: For 316828/316910 co-relation queries the response was YES. [2024-06-28 01:21:42,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92904 conditions, 14432 events. 8646/14432 cut-off events. For 316828/316910 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 105035 event pairs, 2006 based on Foata normal form. 42/13981 useless extension candidates. Maximal degree in co-relation 92812. Up to 10606 conditions per place. [2024-06-28 01:21:42,149 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 338 selfloop transitions, 196 changer transitions 0/550 dead transitions. [2024-06-28 01:21:42,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 550 transitions, 9119 flow [2024-06-28 01:21:42,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:42,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 01:21:42,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-06-28 01:21:42,150 INFO L175 Difference]: Start difference. First operand has 202 places, 492 transitions, 7511 flow. Second operand 8 states and 207 transitions. [2024-06-28 01:21:42,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 550 transitions, 9119 flow [2024-06-28 01:21:42,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 550 transitions, 8878 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:21:42,958 INFO L231 Difference]: Finished difference. Result has 205 places, 501 transitions, 7904 flow [2024-06-28 01:21:42,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7270, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7904, PETRI_PLACES=205, PETRI_TRANSITIONS=501} [2024-06-28 01:21:42,959 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-28 01:21:42,959 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 501 transitions, 7904 flow [2024-06-28 01:21:42,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:42,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:42,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:42,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:21:42,959 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 01:21:42,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:42,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1414266679, now seen corresponding path program 5 times [2024-06-28 01:21:42,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:42,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73424177] [2024-06-28 01:21:42,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:42,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:43,765 INFO 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 01:21:43,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:43,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73424177] [2024-06-28 01:21:43,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73424177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:43,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:43,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:43,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542130861] [2024-06-28 01:21:43,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:43,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:43,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:43,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:43,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:43,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:43,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 501 transitions, 7904 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:43,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:43,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:43,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:46,531 INFO L124 PetriNetUnfolderBase]: 8786/14729 cut-off events. [2024-06-28 01:21:46,531 INFO L125 PetriNetUnfolderBase]: For 334418/334504 co-relation queries the response was YES. [2024-06-28 01:21:46,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97047 conditions, 14729 events. 8786/14729 cut-off events. For 334418/334504 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 107954 event pairs, 2423 based on Foata normal form. 45/14272 useless extension candidates. Maximal degree in co-relation 96952. Up to 10350 conditions per place. [2024-06-28 01:21:46,701 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 315 selfloop transitions, 284 changer transitions 0/615 dead transitions. [2024-06-28 01:21:46,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 615 transitions, 10346 flow [2024-06-28 01:21:46,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:21:46,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:21:46,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-28 01:21:46,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479166666666667 [2024-06-28 01:21:46,702 INFO L175 Difference]: Start difference. First operand has 205 places, 501 transitions, 7904 flow. Second operand 10 states and 263 transitions. [2024-06-28 01:21:46,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 615 transitions, 10346 flow [2024-06-28 01:21:47,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 615 transitions, 10124 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 01:21:47,239 INFO L231 Difference]: Finished difference. Result has 209 places, 525 transitions, 8735 flow [2024-06-28 01:21:47,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7694, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8735, PETRI_PLACES=209, PETRI_TRANSITIONS=525} [2024-06-28 01:21:47,239 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 155 predicate places. [2024-06-28 01:21:47,239 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 525 transitions, 8735 flow [2024-06-28 01:21:47,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:47,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:47,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:47,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:21:47,240 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 01:21:47,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:47,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1414266555, now seen corresponding path program 7 times [2024-06-28 01:21:47,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:47,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213583016] [2024-06-28 01:21:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:47,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:48,092 INFO 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 01:21:48,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:48,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213583016] [2024-06-28 01:21:48,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213583016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:48,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:48,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:48,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882663045] [2024-06-28 01:21:48,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:48,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:48,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:48,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:48,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:48,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:48,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 525 transitions, 8735 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:48,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:48,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:48,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:50,947 INFO L124 PetriNetUnfolderBase]: 8647/14326 cut-off events. [2024-06-28 01:21:50,947 INFO L125 PetriNetUnfolderBase]: For 306880/306952 co-relation queries the response was YES. [2024-06-28 01:21:51,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97381 conditions, 14326 events. 8647/14326 cut-off events. For 306880/306952 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 103811 event pairs, 2494 based on Foata normal form. 34/13919 useless extension candidates. Maximal degree in co-relation 97286. Up to 11398 conditions per place. [2024-06-28 01:21:51,160 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 407 selfloop transitions, 163 changer transitions 0/586 dead transitions. [2024-06-28 01:21:51,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 586 transitions, 10315 flow [2024-06-28 01:21:51,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:21:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:21:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 01:21:51,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-28 01:21:51,162 INFO L175 Difference]: Start difference. First operand has 209 places, 525 transitions, 8735 flow. Second operand 9 states and 229 transitions. [2024-06-28 01:21:51,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 586 transitions, 10315 flow [2024-06-28 01:21:51,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 586 transitions, 9834 flow, removed 115 selfloop flow, removed 8 redundant places. [2024-06-28 01:21:51,790 INFO L231 Difference]: Finished difference. Result has 210 places, 525 transitions, 8625 flow [2024-06-28 01:21:51,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8254, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8625, PETRI_PLACES=210, PETRI_TRANSITIONS=525} [2024-06-28 01:21:51,791 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-28 01:21:51,791 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 525 transitions, 8625 flow [2024-06-28 01:21:51,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:51,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:51,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:51,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:21:51,792 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 01:21:51,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1532354359, now seen corresponding path program 6 times [2024-06-28 01:21:51,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:51,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013671862] [2024-06-28 01:21:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:51,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:52,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:52,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013671862] [2024-06-28 01:21:52,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013671862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:52,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:52,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:52,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113865532] [2024-06-28 01:21:52,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:52,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:52,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:52,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:52,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:52,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:52,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 525 transitions, 8625 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:52,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:52,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:52,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:55,268 INFO L124 PetriNetUnfolderBase]: 9098/15064 cut-off events. [2024-06-28 01:21:55,268 INFO L125 PetriNetUnfolderBase]: For 307479/307555 co-relation queries the response was YES. [2024-06-28 01:21:55,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102201 conditions, 15064 events. 9098/15064 cut-off events. For 307479/307555 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 109423 event pairs, 2333 based on Foata normal form. 33/14636 useless extension candidates. Maximal degree in co-relation 102106. Up to 10833 conditions per place. [2024-06-28 01:21:55,484 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 340 selfloop transitions, 296 changer transitions 0/652 dead transitions. [2024-06-28 01:21:55,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 652 transitions, 11655 flow [2024-06-28 01:21:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:55,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-06-28 01:21:55,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 01:21:55,485 INFO L175 Difference]: Start difference. First operand has 210 places, 525 transitions, 8625 flow. Second operand 8 states and 224 transitions. [2024-06-28 01:21:55,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 652 transitions, 11655 flow [2024-06-28 01:21:56,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 652 transitions, 11349 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 01:21:56,118 INFO L231 Difference]: Finished difference. Result has 213 places, 569 transitions, 9831 flow [2024-06-28 01:21:56,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8343, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9831, PETRI_PLACES=213, PETRI_TRANSITIONS=569} [2024-06-28 01:21:56,119 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 159 predicate places. [2024-06-28 01:21:56,119 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 569 transitions, 9831 flow [2024-06-28 01:21:56,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:56,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:56,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:56,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:21:56,120 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 01:21:56,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:56,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1532531989, now seen corresponding path program 7 times [2024-06-28 01:21:56,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:56,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761693637] [2024-06-28 01:21:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:56,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:57,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:57,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761693637] [2024-06-28 01:21:57,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761693637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:57,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:57,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:21:57,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543527460] [2024-06-28 01:21:57,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:57,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:21:57,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:57,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:21:57,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:21:57,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:21:57,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 569 transitions, 9831 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 01:21:57,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:57,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:21:57,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:00,432 INFO L124 PetriNetUnfolderBase]: 9198/15213 cut-off events. [2024-06-28 01:22:00,432 INFO L125 PetriNetUnfolderBase]: For 313882/313954 co-relation queries the response was YES. [2024-06-28 01:22:00,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107227 conditions, 15213 events. 9198/15213 cut-off events. For 313882/313954 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 111091 event pairs, 2531 based on Foata normal form. 31/14794 useless extension candidates. Maximal degree in co-relation 107130. Up to 11607 conditions per place. [2024-06-28 01:22:00,622 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 444 selfloop transitions, 229 changer transitions 0/689 dead transitions. [2024-06-28 01:22:00,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 689 transitions, 12820 flow [2024-06-28 01:22:00,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:00,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 01:22:00,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-06-28 01:22:00,626 INFO L175 Difference]: Start difference. First operand has 213 places, 569 transitions, 9831 flow. Second operand 9 states and 236 transitions. [2024-06-28 01:22:00,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 689 transitions, 12820 flow [2024-06-28 01:22:01,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 689 transitions, 12607 flow, removed 96 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:01,182 INFO L231 Difference]: Finished difference. Result has 223 places, 611 transitions, 11268 flow [2024-06-28 01:22:01,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9622, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11268, PETRI_PLACES=223, PETRI_TRANSITIONS=611} [2024-06-28 01:22:01,183 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 169 predicate places. [2024-06-28 01:22:01,183 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 611 transitions, 11268 flow [2024-06-28 01:22:01,183 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 01:22:01,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:01,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:01,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:22:01,185 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 01:22:01,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:01,185 INFO L85 PathProgramCache]: Analyzing trace with hash -126275039, now seen corresponding path program 8 times [2024-06-28 01:22:01,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:01,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128059743] [2024-06-28 01:22:01,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:01,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:02,078 INFO 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 01:22:02,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128059743] [2024-06-28 01:22:02,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128059743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:02,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:02,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:02,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069522969] [2024-06-28 01:22:02,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:02,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:02,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:02,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:02,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:02,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:22:02,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 611 transitions, 11268 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:02,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:02,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:22:02,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:05,401 INFO L124 PetriNetUnfolderBase]: 9340/15497 cut-off events. [2024-06-28 01:22:05,401 INFO L125 PetriNetUnfolderBase]: For 341910/341979 co-relation queries the response was YES. [2024-06-28 01:22:05,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112733 conditions, 15497 events. 9340/15497 cut-off events. For 341910/341979 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 114206 event pairs, 2570 based on Foata normal form. 21/15034 useless extension candidates. Maximal degree in co-relation 112631. Up to 12000 conditions per place. [2024-06-28 01:22:05,649 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 494 selfloop transitions, 187 changer transitions 0/697 dead transitions. [2024-06-28 01:22:05,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 697 transitions, 13577 flow [2024-06-28 01:22:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:05,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:05,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 01:22:05,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494791666666666 [2024-06-28 01:22:05,651 INFO L175 Difference]: Start difference. First operand has 223 places, 611 transitions, 11268 flow. Second operand 8 states and 211 transitions. [2024-06-28 01:22:05,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 697 transitions, 13577 flow [2024-06-28 01:22:06,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 697 transitions, 13004 flow, removed 183 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:06,575 INFO L231 Difference]: Finished difference. Result has 228 places, 627 transitions, 11499 flow [2024-06-28 01:22:06,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10695, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11499, PETRI_PLACES=228, PETRI_TRANSITIONS=627} [2024-06-28 01:22:06,576 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 174 predicate places. [2024-06-28 01:22:06,576 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 627 transitions, 11499 flow [2024-06-28 01:22:06,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:06,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:06,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:06,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:22:06,577 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:06,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 929766860, now seen corresponding path program 2 times [2024-06-28 01:22:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:06,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553237807] [2024-06-28 01:22:06,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:06,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:07,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:07,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553237807] [2024-06-28 01:22:07,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553237807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:07,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:07,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:07,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897434294] [2024-06-28 01:22:07,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:07,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:07,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:07,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:07,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:07,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:22:07,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 627 transitions, 11499 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 01:22:07,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:07,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:22:07,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:11,147 INFO L124 PetriNetUnfolderBase]: 10295/17250 cut-off events. [2024-06-28 01:22:11,147 INFO L125 PetriNetUnfolderBase]: For 352527/352707 co-relation queries the response was YES. [2024-06-28 01:22:11,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119232 conditions, 17250 events. 10295/17250 cut-off events. For 352527/352707 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 128491 event pairs, 3728 based on Foata normal form. 105/16756 useless extension candidates. Maximal degree in co-relation 119129. Up to 14366 conditions per place. [2024-06-28 01:22:11,342 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 536 selfloop transitions, 41 changer transitions 0/666 dead transitions. [2024-06-28 01:22:11,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 666 transitions, 13040 flow [2024-06-28 01:22:11,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:11,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:11,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:22:11,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:22:11,344 INFO L175 Difference]: Start difference. First operand has 228 places, 627 transitions, 11499 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:22:11,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 666 transitions, 13040 flow [2024-06-28 01:22:11,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 666 transitions, 12530 flow, removed 83 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:11,958 INFO L231 Difference]: Finished difference. Result has 228 places, 639 transitions, 11238 flow [2024-06-28 01:22:11,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10989, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11238, PETRI_PLACES=228, PETRI_TRANSITIONS=639} [2024-06-28 01:22:11,960 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 174 predicate places. [2024-06-28 01:22:11,960 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 639 transitions, 11238 flow [2024-06-28 01:22:11,961 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 01:22:11,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:11,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:11,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:22:11,963 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 01:22:11,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:11,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1565169112, now seen corresponding path program 2 times [2024-06-28 01:22:11,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:11,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214852750] [2024-06-28 01:22:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:11,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:12,929 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 01:22:12,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:12,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214852750] [2024-06-28 01:22:12,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214852750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:12,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:12,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:12,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396253947] [2024-06-28 01:22:12,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:12,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:12,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:12,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:12,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:13,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:22:13,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 639 transitions, 11238 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:13,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:13,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:22:13,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:16,915 INFO L124 PetriNetUnfolderBase]: 10191/16969 cut-off events. [2024-06-28 01:22:16,915 INFO L125 PetriNetUnfolderBase]: For 391042/391180 co-relation queries the response was YES. [2024-06-28 01:22:17,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121193 conditions, 16969 events. 10191/16969 cut-off events. For 391042/391180 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 127214 event pairs, 2724 based on Foata normal form. 43/16472 useless extension candidates. Maximal degree in co-relation 121089. Up to 10601 conditions per place. [2024-06-28 01:22:17,108 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 437 selfloop transitions, 276 changer transitions 0/733 dead transitions. [2024-06-28 01:22:17,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 733 transitions, 13618 flow [2024-06-28 01:22:17,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:17,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-06-28 01:22:17,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645833333333333 [2024-06-28 01:22:17,110 INFO L175 Difference]: Start difference. First operand has 228 places, 639 transitions, 11238 flow. Second operand 10 states and 271 transitions. [2024-06-28 01:22:17,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 733 transitions, 13618 flow [2024-06-28 01:22:17,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 733 transitions, 13534 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:17,882 INFO L231 Difference]: Finished difference. Result has 236 places, 643 transitions, 11933 flow [2024-06-28 01:22:17,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11158, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11933, PETRI_PLACES=236, PETRI_TRANSITIONS=643} [2024-06-28 01:22:17,882 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 182 predicate places. [2024-06-28 01:22:17,883 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 643 transitions, 11933 flow [2024-06-28 01:22:17,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:17,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:17,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:17,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:22:17,883 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 01:22:17,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:17,884 INFO L85 PathProgramCache]: Analyzing trace with hash 765210901, now seen corresponding path program 9 times [2024-06-28 01:22:17,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:17,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720670423] [2024-06-28 01:22:17,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:17,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:18,859 INFO 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 01:22:18,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:18,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720670423] [2024-06-28 01:22:18,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720670423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:18,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:18,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:18,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573916416] [2024-06-28 01:22:18,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:18,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:18,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:18,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:18,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:18,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:22:18,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 643 transitions, 11933 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 01:22:18,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:18,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:22:18,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:23,016 INFO L124 PetriNetUnfolderBase]: 10189/16902 cut-off events. [2024-06-28 01:22:23,016 INFO L125 PetriNetUnfolderBase]: For 421998/422124 co-relation queries the response was YES. [2024-06-28 01:22:23,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124335 conditions, 16902 events. 10189/16902 cut-off events. For 421998/422124 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 127127 event pairs, 3481 based on Foata normal form. 18/16388 useless extension candidates. Maximal degree in co-relation 124229. Up to 14049 conditions per place. [2024-06-28 01:22:23,262 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 642 selfloop transitions, 81 changer transitions 0/743 dead transitions. [2024-06-28 01:22:23,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 743 transitions, 14692 flow [2024-06-28 01:22:23,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:23,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:23,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 01:22:23,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-28 01:22:23,263 INFO L175 Difference]: Start difference. First operand has 236 places, 643 transitions, 11933 flow. Second operand 9 states and 223 transitions. [2024-06-28 01:22:23,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 743 transitions, 14692 flow [2024-06-28 01:22:24,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 743 transitions, 14334 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:24,170 INFO L231 Difference]: Finished difference. Result has 239 places, 667 transitions, 12474 flow [2024-06-28 01:22:24,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11614, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12474, PETRI_PLACES=239, PETRI_TRANSITIONS=667} [2024-06-28 01:22:24,171 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 185 predicate places. [2024-06-28 01:22:24,171 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 667 transitions, 12474 flow [2024-06-28 01:22:24,171 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 01:22:24,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:24,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:24,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:22:24,172 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 01:22:24,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:24,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1709312740, now seen corresponding path program 1 times [2024-06-28 01:22:24,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:24,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664079690] [2024-06-28 01:22:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:24,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:24,936 INFO 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 01:22:24,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:24,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664079690] [2024-06-28 01:22:24,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664079690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:24,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:24,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:24,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528210454] [2024-06-28 01:22:24,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:24,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:24,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:24,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:24,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:25,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:22:25,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 667 transitions, 12474 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:25,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:25,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:22:25,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:29,242 INFO L124 PetriNetUnfolderBase]: 11567/19452 cut-off events. [2024-06-28 01:22:29,242 INFO L125 PetriNetUnfolderBase]: For 456075/456354 co-relation queries the response was YES. [2024-06-28 01:22:29,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138560 conditions, 19452 events. 11567/19452 cut-off events. For 456075/456354 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 148252 event pairs, 4555 based on Foata normal form. 186/18957 useless extension candidates. Maximal degree in co-relation 138452. Up to 16147 conditions per place. [2024-06-28 01:22:29,535 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 582 selfloop transitions, 48 changer transitions 0/719 dead transitions. [2024-06-28 01:22:29,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 719 transitions, 14308 flow [2024-06-28 01:22:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 01:22:29,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 01:22:29,537 INFO L175 Difference]: Start difference. First operand has 239 places, 667 transitions, 12474 flow. Second operand 8 states and 180 transitions. [2024-06-28 01:22:29,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 719 transitions, 14308 flow [2024-06-28 01:22:30,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 719 transitions, 13898 flow, removed 139 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:30,888 INFO L231 Difference]: Finished difference. Result has 243 places, 685 transitions, 12538 flow [2024-06-28 01:22:30,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=12064, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12538, PETRI_PLACES=243, PETRI_TRANSITIONS=685} [2024-06-28 01:22:30,889 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 189 predicate places. [2024-06-28 01:22:30,889 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 685 transitions, 12538 flow [2024-06-28 01:22:30,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:30,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:30,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:30,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:22:30,891 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 01:22:30,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:30,891 INFO L85 PathProgramCache]: Analyzing trace with hash -397681306, now seen corresponding path program 3 times [2024-06-28 01:22:30,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:30,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504663128] [2024-06-28 01:22:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:30,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:31,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:31,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504663128] [2024-06-28 01:22:31,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504663128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:31,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:31,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:31,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133177041] [2024-06-28 01:22:31,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:31,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:31,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:31,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:31,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:32,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:22:32,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 685 transitions, 12538 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:32,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:32,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:22:32,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:36,459 INFO L124 PetriNetUnfolderBase]: 11088/18433 cut-off events. [2024-06-28 01:22:36,459 INFO L125 PetriNetUnfolderBase]: For 492726/492868 co-relation queries the response was YES. [2024-06-28 01:22:36,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138461 conditions, 18433 events. 11088/18433 cut-off events. For 492726/492868 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 138822 event pairs, 1974 based on Foata normal form. 49/17899 useless extension candidates. Maximal degree in co-relation 138349. Up to 8873 conditions per place. [2024-06-28 01:22:36,708 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 343 selfloop transitions, 402 changer transitions 0/766 dead transitions. [2024-06-28 01:22:36,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 766 transitions, 14936 flow [2024-06-28 01:22:36,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:36,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:36,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-28 01:22:36,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-28 01:22:36,712 INFO L175 Difference]: Start difference. First operand has 243 places, 685 transitions, 12538 flow. Second operand 9 states and 246 transitions. [2024-06-28 01:22:36,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 766 transitions, 14936 flow [2024-06-28 01:22:37,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 766 transitions, 14871 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:37,715 INFO L231 Difference]: Finished difference. Result has 251 places, 688 transitions, 13571 flow [2024-06-28 01:22:37,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=12473, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13571, PETRI_PLACES=251, PETRI_TRANSITIONS=688} [2024-06-28 01:22:37,715 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 197 predicate places. [2024-06-28 01:22:37,715 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 688 transitions, 13571 flow [2024-06-28 01:22:37,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:37,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:37,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:37,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:22:37,716 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 01:22:37,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:37,716 INFO L85 PathProgramCache]: Analyzing trace with hash 771712965, now seen corresponding path program 1 times [2024-06-28 01:22:37,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:37,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754646718] [2024-06-28 01:22:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:37,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:38,630 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 01:22:38,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754646718] [2024-06-28 01:22:38,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754646718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:38,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:38,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:38,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365996938] [2024-06-28 01:22:38,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:38,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:38,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:38,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:38,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:38,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:22:38,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 688 transitions, 13571 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:38,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:38,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:22:38,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand