./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix033.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix033.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix033.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix033.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:32:13,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:32:13,917 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:32:13,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:32:13,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:32:13,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:32:13,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:32:13,959 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:32:13,960 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:32:13,963 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:32:13,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:32:13,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:32:13,965 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:32:13,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:32:13,967 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:32:13,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:32:13,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:32:13,968 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:32:13,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:32:13,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:32:13,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:32:13,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:32:13,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:32:13,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:32:13,970 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:32:13,970 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:32:13,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:32:13,971 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:32:13,971 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:32:13,972 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:32:13,973 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:32:13,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:32:13,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:13,973 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:32:13,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:32:13,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:32:13,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:32:13,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:32:13,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:32:13,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:32:13,975 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:32:13,976 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:32:13,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:32:13,976 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:32:14,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:32:14,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:32:14,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:32:14,240 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:32:14,241 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:32:14,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix033.opt.i [2024-06-28 01:32:15,417 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:32:15,684 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:32:15,685 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix033.opt.i [2024-06-28 01:32:15,698 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17b1a6a8/61b4149079f34d449be356801327b35a/FLAG769ba5821 [2024-06-28 01:32:15,711 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17b1a6a8/61b4149079f34d449be356801327b35a [2024-06-28 01:32:15,713 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:32:15,714 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:32:15,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix033.opt.yml/witness.yml [2024-06-28 01:32:15,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:32:15,890 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:32:15,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:15,893 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:32:15,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:32:15,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:15" (1/2) ... [2024-06-28 01:32:15,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5c8f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:15, skipping insertion in model container [2024-06-28 01:32:15,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:15" (1/2) ... [2024-06-28 01:32:15,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6524ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:15, skipping insertion in model container [2024-06-28 01:32:15,902 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:15" (2/2) ... [2024-06-28 01:32:15,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5c8f5f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:15, skipping insertion in model container [2024-06-28 01:32:15,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:15" (2/2) ... [2024-06-28 01:32:15,904 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:32:16,001 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:32:16,003 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((((((! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 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)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:32:16,003 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((((! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:32:16,004 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] (((((((((((((((((((((! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 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)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:32:16,004 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:32:16,004 INFO L106 edCorrectnessWitness]: ghost_update [L844-L844] multithreaded = 1; [2024-06-28 01:32:16,048 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:32:16,212 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/mix033.opt.i[944,957] [2024-06-28 01:32:16,467 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:16,483 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:32:16,534 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/mix033.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:32:16,632 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:16,668 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:32:16,669 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16 WrapperNode [2024-06-28 01:32:16,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:16,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:16,670 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:32:16,671 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:32:16,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16" (1/1) ... [2024-06-28 01:32:16,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16" (1/1) ... [2024-06-28 01:32:16,725 INFO L138 Inliner]: procedures = 175, calls = 50, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 131 [2024-06-28 01:32:16,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:16,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:32:16,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:32:16,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:32:16,736 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16" (1/1) ... [2024-06-28 01:32:16,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16" (1/1) ... [2024-06-28 01:32:16,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16" (1/1) ... [2024-06-28 01:32:16,756 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 01:32:16,756 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16" (1/1) ... [2024-06-28 01:32:16,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16" (1/1) ... [2024-06-28 01:32:16,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16" (1/1) ... [2024-06-28 01:32:16,767 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16" (1/1) ... [2024-06-28 01:32:16,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16" (1/1) ... [2024-06-28 01:32:16,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16" (1/1) ... [2024-06-28 01:32:16,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:32:16,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:32:16,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:32:16,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:32:16,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16" (1/1) ... [2024-06-28 01:32:16,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:16,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:32:16,813 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 01:32:16,822 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 01:32:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:32:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:32:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:32:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:32:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:32:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:32:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:32:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:32:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:32:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:32:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:32:16,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:32:16,861 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 01:32:16,994 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:32:16,996 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:32:17,348 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:32:17,349 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:32:17,565 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:32:17,565 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:32:17,566 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:17 BoogieIcfgContainer [2024-06-28 01:32:17,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:32:17,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:32:17,571 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:32:17,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:32:17,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:32:15" (1/4) ... [2024-06-28 01:32:17,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf384b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:32:17, skipping insertion in model container [2024-06-28 01:32:17,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:15" (2/4) ... [2024-06-28 01:32:17,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf384b0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:32:17, skipping insertion in model container [2024-06-28 01:32:17,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:16" (3/4) ... [2024-06-28 01:32:17,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf384b0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:32:17, skipping insertion in model container [2024-06-28 01:32:17,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:17" (4/4) ... [2024-06-28 01:32:17,578 INFO L112 eAbstractionObserver]: Analyzing ICFG mix033.opt.i [2024-06-28 01:32:17,596 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:32:17,596 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:32:17,596 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:32:17,654 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:32:17,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 112 flow [2024-06-28 01:32:17,720 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-06-28 01:32:17,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:17,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-06-28 01:32:17,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 112 flow [2024-06-28 01:32:17,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 103 flow [2024-06-28 01:32:17,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:32:17,749 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;@3829cefc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:32:17,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:32:17,757 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:32:17,757 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:32:17,757 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:17,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:17,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:32:17,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:17,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:17,768 INFO L85 PathProgramCache]: Analyzing trace with hash 328363469, now seen corresponding path program 1 times [2024-06-28 01:32:17,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:17,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532771765] [2024-06-28 01:32:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:17,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:19,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:19,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532771765] [2024-06-28 01:32:19,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532771765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:19,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:19,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:19,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714539510] [2024-06-28 01:32:19,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:19,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:19,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:19,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:19,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:19,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2024-06-28 01:32:19,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:19,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:19,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2024-06-28 01:32:19,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:20,085 INFO L124 PetriNetUnfolderBase]: 3657/6090 cut-off events. [2024-06-28 01:32:20,086 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 01:32:20,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11432 conditions, 6090 events. 3657/6090 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 40972 event pairs, 2984 based on Foata normal form. 181/5764 useless extension candidates. Maximal degree in co-relation 11420. Up to 5253 conditions per place. [2024-06-28 01:32:20,130 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 41 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-28 01:32:20,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 229 flow [2024-06-28 01:32:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-06-28 01:32:20,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-06-28 01:32:20,144 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 103 flow. Second operand 3 states and 105 transitions. [2024-06-28 01:32:20,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 229 flow [2024-06-28 01:32:20,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:20,154 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 135 flow [2024-06-28 01:32:20,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-06-28 01:32:20,160 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-06-28 01:32:20,160 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 135 flow [2024-06-28 01:32:20,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:20,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:20,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:20,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:32:20,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:20,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:20,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2024783400, now seen corresponding path program 1 times [2024-06-28 01:32:20,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:20,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594548036] [2024-06-28 01:32:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:20,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:21,183 INFO 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 01:32:21,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:21,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594548036] [2024-06-28 01:32:21,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594548036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:21,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:21,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:32:21,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989413966] [2024-06-28 01:32:21,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:21,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:32:21,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:21,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:32:21,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:32:21,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-06-28 01:32:21,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:21,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:21,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-06-28 01:32:21,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:22,059 INFO L124 PetriNetUnfolderBase]: 4173/6373 cut-off events. [2024-06-28 01:32:22,059 INFO L125 PetriNetUnfolderBase]: For 879/879 co-relation queries the response was YES. [2024-06-28 01:32:22,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13813 conditions, 6373 events. 4173/6373 cut-off events. For 879/879 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 39162 event pairs, 2259 based on Foata normal form. 3/6087 useless extension candidates. Maximal degree in co-relation 13801. Up to 5953 conditions per place. [2024-06-28 01:32:22,102 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 53 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-06-28 01:32:22,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 325 flow [2024-06-28 01:32:22,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:32:22,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:32:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-06-28 01:32:22,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.665 [2024-06-28 01:32:22,104 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 135 flow. Second operand 4 states and 133 transitions. [2024-06-28 01:32:22,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 325 flow [2024-06-28 01:32:22,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 76 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:22,107 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 181 flow [2024-06-28 01:32:22,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-28 01:32:22,108 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-06-28 01:32:22,108 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 181 flow [2024-06-28 01:32:22,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:22,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:22,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:22,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:32:22,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:22,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:22,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1656222584, now seen corresponding path program 1 times [2024-06-28 01:32:22,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:22,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612942812] [2024-06-28 01:32:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:22,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:23,209 INFO 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 01:32:23,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:23,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612942812] [2024-06-28 01:32:23,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612942812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:23,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:23,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:32:23,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874142310] [2024-06-28 01:32:23,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:23,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:32:23,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:23,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:32:23,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:32:23,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-06-28 01:32:23,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:23,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:23,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-06-28 01:32:23,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:24,150 INFO L124 PetriNetUnfolderBase]: 4199/6821 cut-off events. [2024-06-28 01:32:24,150 INFO L125 PetriNetUnfolderBase]: For 2483/2483 co-relation queries the response was YES. [2024-06-28 01:32:24,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15667 conditions, 6821 events. 4199/6821 cut-off events. For 2483/2483 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 44395 event pairs, 1848 based on Foata normal form. 5/6397 useless extension candidates. Maximal degree in co-relation 15653. Up to 5877 conditions per place. [2024-06-28 01:32:24,197 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 70 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-06-28 01:32:24,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 105 transitions, 525 flow [2024-06-28 01:32:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:32:24,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:32:24,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-06-28 01:32:24,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.692 [2024-06-28 01:32:24,200 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 181 flow. Second operand 5 states and 173 transitions. [2024-06-28 01:32:24,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 105 transitions, 525 flow [2024-06-28 01:32:24,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 105 transitions, 506 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:24,205 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 310 flow [2024-06-28 01:32:24,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=64, PETRI_TRANSITIONS=68} [2024-06-28 01:32:24,206 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-06-28 01:32:24,206 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 310 flow [2024-06-28 01:32:24,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:24,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:24,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:24,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:32:24,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:24,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:24,208 INFO L85 PathProgramCache]: Analyzing trace with hash 85262147, now seen corresponding path program 1 times [2024-06-28 01:32:24,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:24,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842718171] [2024-06-28 01:32:24,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:24,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:25,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:25,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842718171] [2024-06-28 01:32:25,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842718171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:25,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:25,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:25,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137094349] [2024-06-28 01:32:25,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:25,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:25,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:25,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:25,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:25,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-06-28 01:32:25,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:25,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:25,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-06-28 01:32:25,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:26,473 INFO L124 PetriNetUnfolderBase]: 4243/6996 cut-off events. [2024-06-28 01:32:26,474 INFO L125 PetriNetUnfolderBase]: For 6508/6510 co-relation queries the response was YES. [2024-06-28 01:32:26,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18498 conditions, 6996 events. 4243/6996 cut-off events. For 6508/6510 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 46812 event pairs, 1880 based on Foata normal form. 12/6553 useless extension candidates. Maximal degree in co-relation 18481. Up to 5853 conditions per place. [2024-06-28 01:32:26,533 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 78 selfloop transitions, 25 changer transitions 0/117 dead transitions. [2024-06-28 01:32:26,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 117 transitions, 666 flow [2024-06-28 01:32:26,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:26,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:26,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 202 transitions. [2024-06-28 01:32:26,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-06-28 01:32:26,537 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 310 flow. Second operand 6 states and 202 transitions. [2024-06-28 01:32:26,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 117 transitions, 666 flow [2024-06-28 01:32:26,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 117 transitions, 654 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 01:32:26,547 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 385 flow [2024-06-28 01:32:26,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=385, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-06-28 01:32:26,548 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-28 01:32:26,548 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 385 flow [2024-06-28 01:32:26,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:26,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:26,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:26,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:32:26,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:26,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:26,550 INFO L85 PathProgramCache]: Analyzing trace with hash -863072227, now seen corresponding path program 1 times [2024-06-28 01:32:26,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:26,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674494580] [2024-06-28 01:32:26,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:26,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:27,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:27,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674494580] [2024-06-28 01:32:27,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674494580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:27,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:27,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:27,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532950545] [2024-06-28 01:32:27,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:27,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:27,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:27,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:27,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:27,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:32:27,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:27,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:27,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:32:27,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:28,485 INFO L124 PetriNetUnfolderBase]: 4248/6628 cut-off events. [2024-06-28 01:32:28,486 INFO L125 PetriNetUnfolderBase]: For 8356/8356 co-relation queries the response was YES. [2024-06-28 01:32:28,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19704 conditions, 6628 events. 4248/6628 cut-off events. For 8356/8356 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 41104 event pairs, 1370 based on Foata normal form. 2/6310 useless extension candidates. Maximal degree in co-relation 19683. Up to 6056 conditions per place. [2024-06-28 01:32:28,545 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 69 selfloop transitions, 10 changer transitions 0/92 dead transitions. [2024-06-28 01:32:28,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 591 flow [2024-06-28 01:32:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:32:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:32:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-06-28 01:32:28,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.572 [2024-06-28 01:32:28,548 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 385 flow. Second operand 5 states and 143 transitions. [2024-06-28 01:32:28,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 591 flow [2024-06-28 01:32:28,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 92 transitions, 522 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:28,566 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 345 flow [2024-06-28 01:32:28,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-06-28 01:32:28,569 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-06-28 01:32:28,574 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 345 flow [2024-06-28 01:32:28,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:28,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:28,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:28,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:32:28,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:28,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1026978189, now seen corresponding path program 1 times [2024-06-28 01:32:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:28,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785484178] [2024-06-28 01:32:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:28,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:29,430 INFO 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 01:32:29,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:29,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785484178] [2024-06-28 01:32:29,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785484178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:29,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:29,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:29,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402756314] [2024-06-28 01:32:29,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:29,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:29,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:29,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:29,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:29,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:32:29,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 01:32:29,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:29,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:32:29,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:30,823 INFO L124 PetriNetUnfolderBase]: 4987/7681 cut-off events. [2024-06-28 01:32:30,824 INFO L125 PetriNetUnfolderBase]: For 10217/10217 co-relation queries the response was YES. [2024-06-28 01:32:30,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22335 conditions, 7681 events. 4987/7681 cut-off events. For 10217/10217 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 46832 event pairs, 1658 based on Foata normal form. 2/7336 useless extension candidates. Maximal degree in co-relation 22312. Up to 7074 conditions per place. [2024-06-28 01:32:30,878 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 79 selfloop transitions, 14 changer transitions 0/105 dead transitions. [2024-06-28 01:32:30,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 105 transitions, 627 flow [2024-06-28 01:32:30,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-28 01:32:30,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5566666666666666 [2024-06-28 01:32:30,880 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 345 flow. Second operand 6 states and 167 transitions. [2024-06-28 01:32:30,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 105 transitions, 627 flow [2024-06-28 01:32:30,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 105 transitions, 598 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:30,890 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 389 flow [2024-06-28 01:32:30,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2024-06-28 01:32:30,891 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2024-06-28 01:32:30,891 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 389 flow [2024-06-28 01:32:30,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 01:32:30,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:30,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:30,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:32:30,892 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:30,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:30,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1027615114, now seen corresponding path program 1 times [2024-06-28 01:32:30,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:30,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716780625] [2024-06-28 01:32:30,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:30,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:30,990 INFO 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 01:32:30,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:30,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716780625] [2024-06-28 01:32:30,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716780625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:30,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:30,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:30,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988253211] [2024-06-28 01:32:30,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:30,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:30,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:30,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:30,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:30,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 50 [2024-06-28 01:32:30,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:30,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:30,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 50 [2024-06-28 01:32:30,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:31,294 INFO L124 PetriNetUnfolderBase]: 1061/2528 cut-off events. [2024-06-28 01:32:31,295 INFO L125 PetriNetUnfolderBase]: For 3737/4173 co-relation queries the response was YES. [2024-06-28 01:32:31,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5882 conditions, 2528 events. 1061/2528 cut-off events. For 3737/4173 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 21570 event pairs, 376 based on Foata normal form. 8/2310 useless extension candidates. Maximal degree in co-relation 5860. Up to 1323 conditions per place. [2024-06-28 01:32:31,318 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 25 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-28 01:32:31,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 407 flow [2024-06-28 01:32:31,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:31,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-06-28 01:32:31,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2024-06-28 01:32:31,320 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 389 flow. Second operand 3 states and 115 transitions. [2024-06-28 01:32:31,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 407 flow [2024-06-28 01:32:31,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 377 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:31,326 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 311 flow [2024-06-28 01:32:31,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-06-28 01:32:31,327 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-28 01:32:31,327 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 311 flow [2024-06-28 01:32:31,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:31,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:31,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:31,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:32:31,328 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:31,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:31,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1777273510, now seen corresponding path program 1 times [2024-06-28 01:32:31,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:31,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976044596] [2024-06-28 01:32:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:31,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:32,235 INFO 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 01:32:32,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:32,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976044596] [2024-06-28 01:32:32,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976044596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:32,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:32,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:32,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92380440] [2024-06-28 01:32:32,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:32,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:32,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:32,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:32,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:32,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:32:32,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 01:32:32,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:32,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:32:32,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:33,404 INFO L124 PetriNetUnfolderBase]: 4716/7187 cut-off events. [2024-06-28 01:32:33,404 INFO L125 PetriNetUnfolderBase]: For 15551/15555 co-relation queries the response was YES. [2024-06-28 01:32:33,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21601 conditions, 7187 events. 4716/7187 cut-off events. For 15551/15555 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 42912 event pairs, 1496 based on Foata normal form. 8/7180 useless extension candidates. Maximal degree in co-relation 21579. Up to 6590 conditions per place. [2024-06-28 01:32:33,469 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 73 selfloop transitions, 19 changer transitions 0/105 dead transitions. [2024-06-28 01:32:33,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 105 transitions, 623 flow [2024-06-28 01:32:33,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:33,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-06-28 01:32:33,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2024-06-28 01:32:33,473 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 311 flow. Second operand 6 states and 172 transitions. [2024-06-28 01:32:33,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 105 transitions, 623 flow [2024-06-28 01:32:33,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 105 transitions, 603 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:33,489 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 365 flow [2024-06-28 01:32:33,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2024-06-28 01:32:33,491 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-28 01:32:33,492 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 365 flow [2024-06-28 01:32:33,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 01:32:33,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:33,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:33,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:32:33,492 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:33,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:33,493 INFO L85 PathProgramCache]: Analyzing trace with hash -483694660, now seen corresponding path program 2 times [2024-06-28 01:32:33,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:33,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473763053] [2024-06-28 01:32:33,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:33,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:34,411 INFO 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 01:32:34,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:34,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473763053] [2024-06-28 01:32:34,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473763053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:34,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:34,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:34,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691147508] [2024-06-28 01:32:34,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:34,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:34,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:34,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:34,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:34,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:32:34,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 365 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 01:32:34,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:34,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:32:34,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:35,524 INFO L124 PetriNetUnfolderBase]: 4704/7160 cut-off events. [2024-06-28 01:32:35,524 INFO L125 PetriNetUnfolderBase]: For 16359/16359 co-relation queries the response was YES. [2024-06-28 01:32:35,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21727 conditions, 7160 events. 4704/7160 cut-off events. For 16359/16359 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 42685 event pairs, 1520 based on Foata normal form. 2/7142 useless extension candidates. Maximal degree in co-relation 21703. Up to 6574 conditions per place. [2024-06-28 01:32:35,579 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 67 selfloop transitions, 20 changer transitions 0/100 dead transitions. [2024-06-28 01:32:35,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 100 transitions, 607 flow [2024-06-28 01:32:35,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:35,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-06-28 01:32:35,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-28 01:32:35,582 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 365 flow. Second operand 6 states and 168 transitions. [2024-06-28 01:32:35,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 100 transitions, 607 flow [2024-06-28 01:32:35,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 100 transitions, 578 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:35,593 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 384 flow [2024-06-28 01:32:35,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2024-06-28 01:32:35,595 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2024-06-28 01:32:35,595 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 384 flow [2024-06-28 01:32:35,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 01:32:35,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:35,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:35,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:32:35,596 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:35,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:35,597 INFO L85 PathProgramCache]: Analyzing trace with hash -524798304, now seen corresponding path program 1 times [2024-06-28 01:32:35,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:35,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738859688] [2024-06-28 01:32:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:35,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:36,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:36,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738859688] [2024-06-28 01:32:36,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738859688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:36,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:36,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:36,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865485367] [2024-06-28 01:32:36,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:36,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:36,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:36,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:32:36,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 384 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:36,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:36,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:32:36,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:37,594 INFO L124 PetriNetUnfolderBase]: 4260/6740 cut-off events. [2024-06-28 01:32:37,594 INFO L125 PetriNetUnfolderBase]: For 15463/15463 co-relation queries the response was YES. [2024-06-28 01:32:37,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20272 conditions, 6740 events. 4260/6740 cut-off events. For 15463/15463 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41546 event pairs, 1314 based on Foata normal form. 4/6731 useless extension candidates. Maximal degree in co-relation 20247. Up to 6025 conditions per place. [2024-06-28 01:32:37,628 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 82 selfloop transitions, 14 changer transitions 5/113 dead transitions. [2024-06-28 01:32:37,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 113 transitions, 698 flow [2024-06-28 01:32:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-28 01:32:37,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5457142857142857 [2024-06-28 01:32:37,630 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 384 flow. Second operand 7 states and 191 transitions. [2024-06-28 01:32:37,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 113 transitions, 698 flow [2024-06-28 01:32:37,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 113 transitions, 633 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:37,641 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 381 flow [2024-06-28 01:32:37,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=381, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2024-06-28 01:32:37,643 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-28 01:32:37,643 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 381 flow [2024-06-28 01:32:37,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:37,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:37,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:37,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:32:37,644 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:37,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:37,644 INFO L85 PathProgramCache]: Analyzing trace with hash 904447756, now seen corresponding path program 1 times [2024-06-28 01:32:37,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:37,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613512674] [2024-06-28 01:32:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:37,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:38,516 INFO 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 01:32:38,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:38,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613512674] [2024-06-28 01:32:38,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613512674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:38,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:38,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:38,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984160868] [2024-06-28 01:32:38,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:38,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:38,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:38,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:38,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:38,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:38,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 381 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:38,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:38,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:38,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:39,550 INFO L124 PetriNetUnfolderBase]: 4388/6622 cut-off events. [2024-06-28 01:32:39,551 INFO L125 PetriNetUnfolderBase]: For 20790/20794 co-relation queries the response was YES. [2024-06-28 01:32:39,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21511 conditions, 6622 events. 4388/6622 cut-off events. For 20790/20794 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38186 event pairs, 1363 based on Foata normal form. 5/6610 useless extension candidates. Maximal degree in co-relation 21485. Up to 6021 conditions per place. [2024-06-28 01:32:39,583 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 83 selfloop transitions, 26 changer transitions 0/120 dead transitions. [2024-06-28 01:32:39,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 120 transitions, 783 flow [2024-06-28 01:32:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-28 01:32:39,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5457142857142857 [2024-06-28 01:32:39,584 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 381 flow. Second operand 7 states and 191 transitions. [2024-06-28 01:32:39,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 120 transitions, 783 flow [2024-06-28 01:32:39,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 120 transitions, 743 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:39,599 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 460 flow [2024-06-28 01:32:39,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=460, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2024-06-28 01:32:39,599 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2024-06-28 01:32:39,599 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 460 flow [2024-06-28 01:32:39,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:39,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:39,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:39,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:32:39,600 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:39,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:39,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2074776000, now seen corresponding path program 2 times [2024-06-28 01:32:39,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:39,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827679010] [2024-06-28 01:32:39,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:39,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:40,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:40,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827679010] [2024-06-28 01:32:40,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827679010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:40,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:40,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:40,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113989176] [2024-06-28 01:32:40,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:40,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:40,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:40,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:40,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:40,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:40,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 460 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:40,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:40,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:40,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:41,784 INFO L124 PetriNetUnfolderBase]: 4411/6644 cut-off events. [2024-06-28 01:32:41,784 INFO L125 PetriNetUnfolderBase]: For 25954/25954 co-relation queries the response was YES. [2024-06-28 01:32:41,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23078 conditions, 6644 events. 4411/6644 cut-off events. For 25954/25954 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 38229 event pairs, 1385 based on Foata normal form. 2/6624 useless extension candidates. Maximal degree in co-relation 23051. Up to 6036 conditions per place. [2024-06-28 01:32:41,818 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 80 selfloop transitions, 33 changer transitions 0/124 dead transitions. [2024-06-28 01:32:41,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 124 transitions, 914 flow [2024-06-28 01:32:41,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:41,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-28 01:32:41,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5457142857142857 [2024-06-28 01:32:41,820 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 460 flow. Second operand 7 states and 191 transitions. [2024-06-28 01:32:41,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 124 transitions, 914 flow [2024-06-28 01:32:41,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 124 transitions, 878 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:41,840 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 560 flow [2024-06-28 01:32:41,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=560, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2024-06-28 01:32:41,841 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2024-06-28 01:32:41,841 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 560 flow [2024-06-28 01:32:41,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:41,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:41,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:41,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:32:41,842 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:41,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:41,842 INFO L85 PathProgramCache]: Analyzing trace with hash 916465810, now seen corresponding path program 3 times [2024-06-28 01:32:41,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:41,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578395943] [2024-06-28 01:32:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:41,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:42,719 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 01:32:42,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:42,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578395943] [2024-06-28 01:32:42,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578395943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:42,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:42,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:42,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249591029] [2024-06-28 01:32:42,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:42,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:42,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:42,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:42,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:42,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:42,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 560 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:42,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:42,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:42,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:43,758 INFO L124 PetriNetUnfolderBase]: 4406/6637 cut-off events. [2024-06-28 01:32:43,758 INFO L125 PetriNetUnfolderBase]: For 30063/30063 co-relation queries the response was YES. [2024-06-28 01:32:43,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23802 conditions, 6637 events. 4406/6637 cut-off events. For 30063/30063 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 38186 event pairs, 1385 based on Foata normal form. 2/6617 useless extension candidates. Maximal degree in co-relation 23773. Up to 6033 conditions per place. [2024-06-28 01:32:43,801 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 77 selfloop transitions, 34 changer transitions 0/122 dead transitions. [2024-06-28 01:32:43,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 122 transitions, 910 flow [2024-06-28 01:32:43,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:43,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:43,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-28 01:32:43,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:32:43,803 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 560 flow. Second operand 7 states and 189 transitions. [2024-06-28 01:32:43,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 122 transitions, 910 flow [2024-06-28 01:32:43,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 122 transitions, 855 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:43,825 INFO L231 Difference]: Finished difference. Result has 87 places, 85 transitions, 581 flow [2024-06-28 01:32:43,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=581, PETRI_PLACES=87, PETRI_TRANSITIONS=85} [2024-06-28 01:32:43,826 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-28 01:32:43,826 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 85 transitions, 581 flow [2024-06-28 01:32:43,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:43,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:43,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:43,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:32:43,826 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:43,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:43,827 INFO L85 PathProgramCache]: Analyzing trace with hash 303023468, now seen corresponding path program 1 times [2024-06-28 01:32:43,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:43,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042169732] [2024-06-28 01:32:43,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:43,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:44,775 INFO 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 01:32:44,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:44,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042169732] [2024-06-28 01:32:44,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042169732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:44,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:44,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:44,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306494579] [2024-06-28 01:32:44,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:44,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:44,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:44,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:44,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:44,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:32:44,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 581 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:44,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:44,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:32:44,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:45,587 INFO L124 PetriNetUnfolderBase]: 3609/6235 cut-off events. [2024-06-28 01:32:45,588 INFO L125 PetriNetUnfolderBase]: For 27924/27936 co-relation queries the response was YES. [2024-06-28 01:32:45,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20891 conditions, 6235 events. 3609/6235 cut-off events. For 27924/27936 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 42374 event pairs, 1484 based on Foata normal form. 5/6045 useless extension candidates. Maximal degree in co-relation 20859. Up to 5161 conditions per place. [2024-06-28 01:32:45,626 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 79 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2024-06-28 01:32:45,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 106 transitions, 842 flow [2024-06-28 01:32:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:32:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:32:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-28 01:32:45,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528 [2024-06-28 01:32:45,628 INFO L175 Difference]: Start difference. First operand has 87 places, 85 transitions, 581 flow. Second operand 5 states and 132 transitions. [2024-06-28 01:32:45,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 106 transitions, 842 flow [2024-06-28 01:32:45,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 106 transitions, 749 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:45,649 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 584 flow [2024-06-28 01:32:45,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=584, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-06-28 01:32:45,649 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-06-28 01:32:45,649 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 584 flow [2024-06-28 01:32:45,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:45,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:45,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:45,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:32:45,650 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:45,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:45,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1404445878, now seen corresponding path program 1 times [2024-06-28 01:32:45,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:45,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829812394] [2024-06-28 01:32:45,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:45,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:46,660 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 01:32:46,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:46,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829812394] [2024-06-28 01:32:46,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829812394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:46,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:46,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:46,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576697910] [2024-06-28 01:32:46,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:46,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:46,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:46,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:46,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:46,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:46,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 584 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:46,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:46,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:46,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:47,790 INFO L124 PetriNetUnfolderBase]: 4459/7230 cut-off events. [2024-06-28 01:32:47,790 INFO L125 PetriNetUnfolderBase]: For 36863/36865 co-relation queries the response was YES. [2024-06-28 01:32:47,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25721 conditions, 7230 events. 4459/7230 cut-off events. For 36863/36865 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 45742 event pairs, 1562 based on Foata normal form. 2/7052 useless extension candidates. Maximal degree in co-relation 25688. Up to 6089 conditions per place. [2024-06-28 01:32:47,831 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 91 selfloop transitions, 38 changer transitions 0/140 dead transitions. [2024-06-28 01:32:47,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 140 transitions, 1114 flow [2024-06-28 01:32:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:47,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-28 01:32:47,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5485714285714286 [2024-06-28 01:32:47,834 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 584 flow. Second operand 7 states and 192 transitions. [2024-06-28 01:32:47,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 140 transitions, 1114 flow [2024-06-28 01:32:47,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 140 transitions, 1089 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:47,863 INFO L231 Difference]: Finished difference. Result has 91 places, 98 transitions, 712 flow [2024-06-28 01:32:47,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=91, PETRI_TRANSITIONS=98} [2024-06-28 01:32:47,864 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2024-06-28 01:32:47,864 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 98 transitions, 712 flow [2024-06-28 01:32:47,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:47,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:47,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:47,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:32:47,865 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:47,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:47,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1089072979, now seen corresponding path program 1 times [2024-06-28 01:32:47,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:47,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854738247] [2024-06-28 01:32:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:47,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:48,960 INFO 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 01:32:48,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:48,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854738247] [2024-06-28 01:32:48,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854738247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:48,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:48,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:48,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430667117] [2024-06-28 01:32:48,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:48,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:48,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:48,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:48,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:49,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:49,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 98 transitions, 712 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:49,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:49,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:49,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:50,292 INFO L124 PetriNetUnfolderBase]: 4551/7390 cut-off events. [2024-06-28 01:32:50,292 INFO L125 PetriNetUnfolderBase]: For 42093/42095 co-relation queries the response was YES. [2024-06-28 01:32:50,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26824 conditions, 7390 events. 4551/7390 cut-off events. For 42093/42095 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 46976 event pairs, 1360 based on Foata normal form. 8/7214 useless extension candidates. Maximal degree in co-relation 26789. Up to 5946 conditions per place. [2024-06-28 01:32:50,341 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 104 selfloop transitions, 42 changer transitions 0/157 dead transitions. [2024-06-28 01:32:50,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 157 transitions, 1252 flow [2024-06-28 01:32:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:50,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-28 01:32:50,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-06-28 01:32:50,342 INFO L175 Difference]: Start difference. First operand has 91 places, 98 transitions, 712 flow. Second operand 8 states and 222 transitions. [2024-06-28 01:32:50,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 157 transitions, 1252 flow [2024-06-28 01:32:50,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 157 transitions, 1192 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:50,382 INFO L231 Difference]: Finished difference. Result has 96 places, 105 transitions, 813 flow [2024-06-28 01:32:50,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=813, PETRI_PLACES=96, PETRI_TRANSITIONS=105} [2024-06-28 01:32:50,383 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-06-28 01:32:50,383 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 105 transitions, 813 flow [2024-06-28 01:32:50,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:50,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:50,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:50,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:32:50,384 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:50,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:50,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1089067182, now seen corresponding path program 2 times [2024-06-28 01:32:50,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:50,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987279366] [2024-06-28 01:32:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:50,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:51,259 INFO 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 01:32:51,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:51,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987279366] [2024-06-28 01:32:51,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987279366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:51,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:51,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:51,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696347033] [2024-06-28 01:32:51,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:51,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:51,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:51,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:51,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:51,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:51,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 105 transitions, 813 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:51,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:51,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:51,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:52,382 INFO L124 PetriNetUnfolderBase]: 4546/7376 cut-off events. [2024-06-28 01:32:52,383 INFO L125 PetriNetUnfolderBase]: For 48767/48769 co-relation queries the response was YES. [2024-06-28 01:32:52,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28245 conditions, 7376 events. 4546/7376 cut-off events. For 48767/48769 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 46753 event pairs, 1480 based on Foata normal form. 2/7196 useless extension candidates. Maximal degree in co-relation 28209. Up to 6212 conditions per place. [2024-06-28 01:32:52,428 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 96 selfloop transitions, 41 changer transitions 0/148 dead transitions. [2024-06-28 01:32:52,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 148 transitions, 1253 flow [2024-06-28 01:32:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-28 01:32:52,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5542857142857143 [2024-06-28 01:32:52,431 INFO L175 Difference]: Start difference. First operand has 96 places, 105 transitions, 813 flow. Second operand 7 states and 194 transitions. [2024-06-28 01:32:52,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 148 transitions, 1253 flow [2024-06-28 01:32:52,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 148 transitions, 1190 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:52,480 INFO L231 Difference]: Finished difference. Result has 99 places, 105 transitions, 840 flow [2024-06-28 01:32:52,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=840, PETRI_PLACES=99, PETRI_TRANSITIONS=105} [2024-06-28 01:32:52,480 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-06-28 01:32:52,480 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 105 transitions, 840 flow [2024-06-28 01:32:52,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:52,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:52,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:52,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:32:52,481 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:52,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:52,481 INFO L85 PathProgramCache]: Analyzing trace with hash -966446437, now seen corresponding path program 2 times [2024-06-28 01:32:52,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:52,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117045737] [2024-06-28 01:32:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:52,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:53,515 INFO 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 01:32:53,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:53,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117045737] [2024-06-28 01:32:53,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117045737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:53,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:53,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:53,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694806009] [2024-06-28 01:32:53,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:53,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:53,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:53,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:53,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:53,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:53,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 105 transitions, 840 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:53,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:53,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:53,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:54,817 INFO L124 PetriNetUnfolderBase]: 4592/7044 cut-off events. [2024-06-28 01:32:54,817 INFO L125 PetriNetUnfolderBase]: For 53559/53559 co-relation queries the response was YES. [2024-06-28 01:32:54,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28443 conditions, 7044 events. 4592/7044 cut-off events. For 53559/53559 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 41938 event pairs, 1238 based on Foata normal form. 4/6993 useless extension candidates. Maximal degree in co-relation 28405. Up to 5964 conditions per place. [2024-06-28 01:32:54,863 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 96 selfloop transitions, 54 changer transitions 0/161 dead transitions. [2024-06-28 01:32:54,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 161 transitions, 1454 flow [2024-06-28 01:32:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:54,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:54,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-28 01:32:54,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-06-28 01:32:54,865 INFO L175 Difference]: Start difference. First operand has 99 places, 105 transitions, 840 flow. Second operand 8 states and 222 transitions. [2024-06-28 01:32:54,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 161 transitions, 1454 flow [2024-06-28 01:32:54,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 161 transitions, 1330 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:54,907 INFO L231 Difference]: Finished difference. Result has 100 places, 111 transitions, 902 flow [2024-06-28 01:32:54,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=902, PETRI_PLACES=100, PETRI_TRANSITIONS=111} [2024-06-28 01:32:54,908 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2024-06-28 01:32:54,908 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 111 transitions, 902 flow [2024-06-28 01:32:54,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:54,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:54,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:54,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:32:54,909 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:54,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:54,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1749498388, now seen corresponding path program 3 times [2024-06-28 01:32:54,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:54,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141845741] [2024-06-28 01:32:54,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:54,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:55,770 INFO 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 01:32:55,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:55,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141845741] [2024-06-28 01:32:55,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141845741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:55,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:55,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:55,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876740313] [2024-06-28 01:32:55,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:55,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:55,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:55,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:55,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:55,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:55,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 111 transitions, 902 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:55,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:55,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:55,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:56,841 INFO L124 PetriNetUnfolderBase]: 4587/6963 cut-off events. [2024-06-28 01:32:56,841 INFO L125 PetriNetUnfolderBase]: For 58225/58227 co-relation queries the response was YES. [2024-06-28 01:32:56,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29067 conditions, 6963 events. 4587/6963 cut-off events. For 58225/58227 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 40638 event pairs, 1331 based on Foata normal form. 4/6951 useless extension candidates. Maximal degree in co-relation 29029. Up to 6271 conditions per place. [2024-06-28 01:32:56,889 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 100 selfloop transitions, 35 changer transitions 0/146 dead transitions. [2024-06-28 01:32:56,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 146 transitions, 1260 flow [2024-06-28 01:32:56,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:56,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:56,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:32:56,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2024-06-28 01:32:56,891 INFO L175 Difference]: Start difference. First operand has 100 places, 111 transitions, 902 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:32:56,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 146 transitions, 1260 flow [2024-06-28 01:32:56,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 146 transitions, 1158 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:56,966 INFO L231 Difference]: Finished difference. Result has 103 places, 111 transitions, 878 flow [2024-06-28 01:32:56,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=878, PETRI_PLACES=103, PETRI_TRANSITIONS=111} [2024-06-28 01:32:56,966 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-06-28 01:32:56,967 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 111 transitions, 878 flow [2024-06-28 01:32:56,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:56,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:56,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:56,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:32:56,968 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:56,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:56,969 INFO L85 PathProgramCache]: Analyzing trace with hash 106454573, now seen corresponding path program 3 times [2024-06-28 01:32:56,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:56,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050109854] [2024-06-28 01:32:56,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:56,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:57,892 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 01:32:57,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:57,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050109854] [2024-06-28 01:32:57,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050109854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:57,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:57,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:57,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698835547] [2024-06-28 01:32:57,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:57,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:57,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:57,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:57,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:57,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:57,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 111 transitions, 878 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:57,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:57,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:57,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:59,126 INFO L124 PetriNetUnfolderBase]: 4633/7110 cut-off events. [2024-06-28 01:32:59,126 INFO L125 PetriNetUnfolderBase]: For 61580/61580 co-relation queries the response was YES. [2024-06-28 01:32:59,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29176 conditions, 7110 events. 4633/7110 cut-off events. For 61580/61580 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 42306 event pairs, 1241 based on Foata normal form. 4/7060 useless extension candidates. Maximal degree in co-relation 29136. Up to 5982 conditions per place. [2024-06-28 01:32:59,170 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 100 selfloop transitions, 54 changer transitions 0/165 dead transitions. [2024-06-28 01:32:59,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 165 transitions, 1484 flow [2024-06-28 01:32:59,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:59,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:59,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-28 01:32:59,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575 [2024-06-28 01:32:59,172 INFO L175 Difference]: Start difference. First operand has 103 places, 111 transitions, 878 flow. Second operand 8 states and 223 transitions. [2024-06-28 01:32:59,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 165 transitions, 1484 flow [2024-06-28 01:32:59,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 165 transitions, 1380 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:59,216 INFO L231 Difference]: Finished difference. Result has 104 places, 114 transitions, 924 flow [2024-06-28 01:32:59,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=924, PETRI_PLACES=104, PETRI_TRANSITIONS=114} [2024-06-28 01:32:59,217 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 48 predicate places. [2024-06-28 01:32:59,217 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 114 transitions, 924 flow [2024-06-28 01:32:59,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:59,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:59,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:59,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:32:59,218 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:59,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:59,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1820236063, now seen corresponding path program 4 times [2024-06-28 01:32:59,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:59,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676925765] [2024-06-28 01:32:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:59,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:00,121 INFO 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 01:33:00,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:00,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676925765] [2024-06-28 01:33:00,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676925765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:00,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:00,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:00,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343774608] [2024-06-28 01:33:00,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:00,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:00,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:00,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:00,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:00,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 114 transitions, 924 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:00,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:00,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:00,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:01,348 INFO L124 PetriNetUnfolderBase]: 4623/7106 cut-off events. [2024-06-28 01:33:01,348 INFO L125 PetriNetUnfolderBase]: For 65681/65681 co-relation queries the response was YES. [2024-06-28 01:33:01,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29502 conditions, 7106 events. 4623/7106 cut-off events. For 65681/65681 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 42406 event pairs, 1239 based on Foata normal form. 4/7052 useless extension candidates. Maximal degree in co-relation 29461. Up to 5978 conditions per place. [2024-06-28 01:33:01,391 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 97 selfloop transitions, 55 changer transitions 0/163 dead transitions. [2024-06-28 01:33:01,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 163 transitions, 1422 flow [2024-06-28 01:33:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:01,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-28 01:33:01,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5525 [2024-06-28 01:33:01,393 INFO L175 Difference]: Start difference. First operand has 104 places, 114 transitions, 924 flow. Second operand 8 states and 221 transitions. [2024-06-28 01:33:01,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 163 transitions, 1422 flow [2024-06-28 01:33:01,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 163 transitions, 1296 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:01,457 INFO L231 Difference]: Finished difference. Result has 107 places, 114 transitions, 916 flow [2024-06-28 01:33:01,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=916, PETRI_PLACES=107, PETRI_TRANSITIONS=114} [2024-06-28 01:33:01,458 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 51 predicate places. [2024-06-28 01:33:01,458 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 114 transitions, 916 flow [2024-06-28 01:33:01,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:01,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:01,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:01,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:33:01,458 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:01,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash 844011817, now seen corresponding path program 1 times [2024-06-28 01:33:01,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:01,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264272912] [2024-06-28 01:33:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:01,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:02,372 INFO 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 01:33:02,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:02,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264272912] [2024-06-28 01:33:02,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264272912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:02,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:02,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:02,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412873132] [2024-06-28 01:33:02,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:02,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:02,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:02,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:02,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:02,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:33:02,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 916 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:02,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:02,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:33:02,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:03,142 INFO L124 PetriNetUnfolderBase]: 4382/7153 cut-off events. [2024-06-28 01:33:03,143 INFO L125 PetriNetUnfolderBase]: For 69515/69525 co-relation queries the response was YES. [2024-06-28 01:33:03,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28911 conditions, 7153 events. 4382/7153 cut-off events. For 69515/69525 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 46609 event pairs, 1681 based on Foata normal form. 3/7032 useless extension candidates. Maximal degree in co-relation 28869. Up to 6232 conditions per place. [2024-06-28 01:33:03,187 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 105 selfloop transitions, 12 changer transitions 0/136 dead transitions. [2024-06-28 01:33:03,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 136 transitions, 1222 flow [2024-06-28 01:33:03,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 01:33:03,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033333333333333 [2024-06-28 01:33:03,188 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 916 flow. Second operand 6 states and 151 transitions. [2024-06-28 01:33:03,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 136 transitions, 1222 flow [2024-06-28 01:33:03,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 136 transitions, 1085 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:03,229 INFO L231 Difference]: Finished difference. Result has 105 places, 117 transitions, 841 flow [2024-06-28 01:33:03,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=841, PETRI_PLACES=105, PETRI_TRANSITIONS=117} [2024-06-28 01:33:03,229 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2024-06-28 01:33:03,229 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 117 transitions, 841 flow [2024-06-28 01:33:03,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:03,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:03,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:03,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:33:03,230 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:03,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:03,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1484451159, now seen corresponding path program 1 times [2024-06-28 01:33:03,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:03,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094124292] [2024-06-28 01:33:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:03,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:04,059 INFO 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 01:33:04,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:04,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094124292] [2024-06-28 01:33:04,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094124292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:04,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:04,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:04,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583746152] [2024-06-28 01:33:04,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:04,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:04,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:04,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:04,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:04,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:33:04,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 117 transitions, 841 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:04,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:04,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:33:04,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:05,081 INFO L124 PetriNetUnfolderBase]: 4584/7503 cut-off events. [2024-06-28 01:33:05,081 INFO L125 PetriNetUnfolderBase]: For 85291/85297 co-relation queries the response was YES. [2024-06-28 01:33:05,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31374 conditions, 7503 events. 4584/7503 cut-off events. For 85291/85297 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 48681 event pairs, 984 based on Foata normal form. 6/7328 useless extension candidates. Maximal degree in co-relation 31331. Up to 6184 conditions per place. [2024-06-28 01:33:05,132 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 118 selfloop transitions, 25 changer transitions 0/163 dead transitions. [2024-06-28 01:33:05,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 163 transitions, 1359 flow [2024-06-28 01:33:05,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:05,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:05,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-28 01:33:05,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5542857142857143 [2024-06-28 01:33:05,133 INFO L175 Difference]: Start difference. First operand has 105 places, 117 transitions, 841 flow. Second operand 7 states and 194 transitions. [2024-06-28 01:33:05,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 163 transitions, 1359 flow [2024-06-28 01:33:05,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 163 transitions, 1319 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:05,193 INFO L231 Difference]: Finished difference. Result has 108 places, 121 transitions, 910 flow [2024-06-28 01:33:05,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=910, PETRI_PLACES=108, PETRI_TRANSITIONS=121} [2024-06-28 01:33:05,193 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2024-06-28 01:33:05,194 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 121 transitions, 910 flow [2024-06-28 01:33:05,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:05,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:05,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:05,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:33:05,194 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:05,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:05,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1484511609, now seen corresponding path program 2 times [2024-06-28 01:33:05,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:05,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486279518] [2024-06-28 01:33:05,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:05,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:06,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:06,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:06,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486279518] [2024-06-28 01:33:06,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486279518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:06,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:06,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:06,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307458073] [2024-06-28 01:33:06,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:06,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:06,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:06,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:06,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:06,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:33:06,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 121 transitions, 910 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:06,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:06,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:33:06,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:07,245 INFO L124 PetriNetUnfolderBase]: 4576/7501 cut-off events. [2024-06-28 01:33:07,245 INFO L125 PetriNetUnfolderBase]: For 92072/92078 co-relation queries the response was YES. [2024-06-28 01:33:07,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32048 conditions, 7501 events. 4576/7501 cut-off events. For 92072/92078 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 48708 event pairs, 1342 based on Foata normal form. 6/7322 useless extension candidates. Maximal degree in co-relation 32004. Up to 6301 conditions per place. [2024-06-28 01:33:07,302 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 117 selfloop transitions, 23 changer transitions 0/160 dead transitions. [2024-06-28 01:33:07,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 160 transitions, 1288 flow [2024-06-28 01:33:07,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:07,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-28 01:33:07,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5485714285714286 [2024-06-28 01:33:07,303 INFO L175 Difference]: Start difference. First operand has 108 places, 121 transitions, 910 flow. Second operand 7 states and 192 transitions. [2024-06-28 01:33:07,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 160 transitions, 1288 flow [2024-06-28 01:33:07,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 160 transitions, 1230 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:07,364 INFO L231 Difference]: Finished difference. Result has 112 places, 121 transitions, 905 flow [2024-06-28 01:33:07,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=905, PETRI_PLACES=112, PETRI_TRANSITIONS=121} [2024-06-28 01:33:07,365 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2024-06-28 01:33:07,365 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 121 transitions, 905 flow [2024-06-28 01:33:07,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:07,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:07,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:07,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:33:07,365 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:07,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:07,365 INFO L85 PathProgramCache]: Analyzing trace with hash -598475103, now seen corresponding path program 1 times [2024-06-28 01:33:07,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:07,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024900036] [2024-06-28 01:33:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:07,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:08,274 INFO 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 01:33:08,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:08,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024900036] [2024-06-28 01:33:08,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024900036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:08,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:08,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:08,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138549088] [2024-06-28 01:33:08,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:08,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:08,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:08,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:08,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:08,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 121 transitions, 905 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:08,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:08,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:08,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:09,584 INFO L124 PetriNetUnfolderBase]: 4924/7946 cut-off events. [2024-06-28 01:33:09,585 INFO L125 PetriNetUnfolderBase]: For 100935/100937 co-relation queries the response was YES. [2024-06-28 01:33:09,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34196 conditions, 7946 events. 4924/7946 cut-off events. For 100935/100937 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 50821 event pairs, 1307 based on Foata normal form. 4/7759 useless extension candidates. Maximal degree in co-relation 34150. Up to 6307 conditions per place. [2024-06-28 01:33:09,645 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 113 selfloop transitions, 56 changer transitions 0/181 dead transitions. [2024-06-28 01:33:09,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 181 transitions, 1627 flow [2024-06-28 01:33:09,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:09,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:09,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-06-28 01:33:09,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-28 01:33:09,646 INFO L175 Difference]: Start difference. First operand has 112 places, 121 transitions, 905 flow. Second operand 8 states and 224 transitions. [2024-06-28 01:33:09,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 181 transitions, 1627 flow [2024-06-28 01:33:09,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 181 transitions, 1573 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:09,726 INFO L231 Difference]: Finished difference. Result has 114 places, 127 transitions, 1048 flow [2024-06-28 01:33:09,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1048, PETRI_PLACES=114, PETRI_TRANSITIONS=127} [2024-06-28 01:33:09,726 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-06-28 01:33:09,727 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 127 transitions, 1048 flow [2024-06-28 01:33:09,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:09,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:09,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:09,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:33:09,727 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:09,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:09,727 INFO L85 PathProgramCache]: Analyzing trace with hash -598654593, now seen corresponding path program 2 times [2024-06-28 01:33:09,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:09,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652162721] [2024-06-28 01:33:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:09,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:10,733 INFO 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 01:33:10,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:10,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652162721] [2024-06-28 01:33:10,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652162721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:10,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:10,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:10,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551125975] [2024-06-28 01:33:10,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:10,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:10,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:10,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:10,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:10,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:10,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 127 transitions, 1048 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:10,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:10,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:10,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:12,096 INFO L124 PetriNetUnfolderBase]: 4970/8039 cut-off events. [2024-06-28 01:33:12,097 INFO L125 PetriNetUnfolderBase]: For 109382/109384 co-relation queries the response was YES. [2024-06-28 01:33:12,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35280 conditions, 8039 events. 4970/8039 cut-off events. For 109382/109384 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 51688 event pairs, 1315 based on Foata normal form. 4/7848 useless extension candidates. Maximal degree in co-relation 35233. Up to 6346 conditions per place. [2024-06-28 01:33:12,164 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 110 selfloop transitions, 63 changer transitions 0/185 dead transitions. [2024-06-28 01:33:12,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 185 transitions, 1666 flow [2024-06-28 01:33:12,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:12,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 226 transitions. [2024-06-28 01:33:12,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565 [2024-06-28 01:33:12,165 INFO L175 Difference]: Start difference. First operand has 114 places, 127 transitions, 1048 flow. Second operand 8 states and 226 transitions. [2024-06-28 01:33:12,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 185 transitions, 1666 flow [2024-06-28 01:33:12,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 185 transitions, 1558 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:12,239 INFO L231 Difference]: Finished difference. Result has 118 places, 130 transitions, 1118 flow [2024-06-28 01:33:12,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1118, PETRI_PLACES=118, PETRI_TRANSITIONS=130} [2024-06-28 01:33:12,240 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-28 01:33:12,240 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 130 transitions, 1118 flow [2024-06-28 01:33:12,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:12,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:12,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:12,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:33:12,240 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:12,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:12,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1602777229, now seen corresponding path program 3 times [2024-06-28 01:33:12,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:12,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814456754] [2024-06-28 01:33:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:12,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:13,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:13,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:13,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814456754] [2024-06-28 01:33:13,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814456754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:13,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:13,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:13,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925958767] [2024-06-28 01:33:13,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:13,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:13,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:13,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:13,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:13,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 130 transitions, 1118 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:13,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:13,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:13,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:14,669 INFO L124 PetriNetUnfolderBase]: 4960/8005 cut-off events. [2024-06-28 01:33:14,669 INFO L125 PetriNetUnfolderBase]: For 115483/115485 co-relation queries the response was YES. [2024-06-28 01:33:14,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35330 conditions, 8005 events. 4960/8005 cut-off events. For 115483/115485 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 51313 event pairs, 1316 based on Foata normal form. 4/7818 useless extension candidates. Maximal degree in co-relation 35282. Up to 6338 conditions per place. [2024-06-28 01:33:14,717 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 113 selfloop transitions, 58 changer transitions 0/183 dead transitions. [2024-06-28 01:33:14,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 183 transitions, 1686 flow [2024-06-28 01:33:14,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-06-28 01:33:14,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-28 01:33:14,719 INFO L175 Difference]: Start difference. First operand has 118 places, 130 transitions, 1118 flow. Second operand 8 states and 224 transitions. [2024-06-28 01:33:14,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 183 transitions, 1686 flow [2024-06-28 01:33:14,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 183 transitions, 1490 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:14,793 INFO L231 Difference]: Finished difference. Result has 119 places, 130 transitions, 1046 flow [2024-06-28 01:33:14,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1046, PETRI_PLACES=119, PETRI_TRANSITIONS=130} [2024-06-28 01:33:14,794 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-28 01:33:14,794 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 130 transitions, 1046 flow [2024-06-28 01:33:14,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:14,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:14,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:14,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:33:14,795 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:14,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:14,795 INFO L85 PathProgramCache]: Analyzing trace with hash 2031117439, now seen corresponding path program 1 times [2024-06-28 01:33:14,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:14,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995736344] [2024-06-28 01:33:14,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:14,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:15,699 INFO 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 01:33:15,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:15,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995736344] [2024-06-28 01:33:15,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995736344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:15,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:15,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:15,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344807696] [2024-06-28 01:33:15,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:15,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:15,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:15,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:15,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:15,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:33:15,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 130 transitions, 1046 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 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 01:33:15,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:15,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:33:15,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:16,696 INFO L124 PetriNetUnfolderBase]: 4783/7734 cut-off events. [2024-06-28 01:33:16,697 INFO L125 PetriNetUnfolderBase]: For 119901/119911 co-relation queries the response was YES. [2024-06-28 01:33:16,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34639 conditions, 7734 events. 4783/7734 cut-off events. For 119901/119911 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 50538 event pairs, 1672 based on Foata normal form. 3/7589 useless extension candidates. Maximal degree in co-relation 34591. Up to 6720 conditions per place. [2024-06-28 01:33:16,748 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 127 selfloop transitions, 13 changer transitions 0/160 dead transitions. [2024-06-28 01:33:16,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 160 transitions, 1439 flow [2024-06-28 01:33:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:16,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 01:33:16,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:33:16,750 INFO L175 Difference]: Start difference. First operand has 119 places, 130 transitions, 1046 flow. Second operand 6 states and 156 transitions. [2024-06-28 01:33:16,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 160 transitions, 1439 flow [2024-06-28 01:33:16,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 160 transitions, 1308 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:16,830 INFO L231 Difference]: Finished difference. Result has 119 places, 137 transitions, 1023 flow [2024-06-28 01:33:16,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1023, PETRI_PLACES=119, PETRI_TRANSITIONS=137} [2024-06-28 01:33:16,830 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-28 01:33:16,831 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 137 transitions, 1023 flow [2024-06-28 01:33:16,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 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 01:33:16,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:16,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:16,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:33:16,831 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:16,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:16,832 INFO L85 PathProgramCache]: Analyzing trace with hash 255383769, now seen corresponding path program 4 times [2024-06-28 01:33:16,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:16,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382732069] [2024-06-28 01:33:16,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:16,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:17,725 INFO 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 01:33:17,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:17,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382732069] [2024-06-28 01:33:17,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382732069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:17,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:17,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:17,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756235475] [2024-06-28 01:33:17,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:17,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:17,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:17,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:17,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:17,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:17,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 137 transitions, 1023 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:17,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:17,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:17,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:19,017 INFO L124 PetriNetUnfolderBase]: 5065/7677 cut-off events. [2024-06-28 01:33:19,017 INFO L125 PetriNetUnfolderBase]: For 130645/130647 co-relation queries the response was YES. [2024-06-28 01:33:19,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36622 conditions, 7677 events. 5065/7677 cut-off events. For 130645/130647 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 45719 event pairs, 1153 based on Foata normal form. 6/7661 useless extension candidates. Maximal degree in co-relation 36572. Up to 6407 conditions per place. [2024-06-28 01:33:19,073 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 121 selfloop transitions, 61 changer transitions 0/194 dead transitions. [2024-06-28 01:33:19,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 194 transitions, 1801 flow [2024-06-28 01:33:19,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:19,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-28 01:33:19,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5525 [2024-06-28 01:33:19,075 INFO L175 Difference]: Start difference. First operand has 119 places, 137 transitions, 1023 flow. Second operand 8 states and 221 transitions. [2024-06-28 01:33:19,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 194 transitions, 1801 flow [2024-06-28 01:33:19,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 194 transitions, 1760 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:19,160 INFO L231 Difference]: Finished difference. Result has 124 places, 143 transitions, 1188 flow [2024-06-28 01:33:19,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1188, PETRI_PLACES=124, PETRI_TRANSITIONS=143} [2024-06-28 01:33:19,161 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 68 predicate places. [2024-06-28 01:33:19,161 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 143 transitions, 1188 flow [2024-06-28 01:33:19,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:19,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:19,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:19,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:33:19,162 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:19,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:19,162 INFO L85 PathProgramCache]: Analyzing trace with hash 104932441, now seen corresponding path program 5 times [2024-06-28 01:33:19,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:19,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258155604] [2024-06-28 01:33:19,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:19,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:20,087 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 01:33:20,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:20,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258155604] [2024-06-28 01:33:20,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258155604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:20,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:20,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:20,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735387755] [2024-06-28 01:33:20,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:20,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:20,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:20,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:20,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:20,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:20,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 143 transitions, 1188 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:20,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:20,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:20,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:21,387 INFO L124 PetriNetUnfolderBase]: 5055/7663 cut-off events. [2024-06-28 01:33:21,388 INFO L125 PetriNetUnfolderBase]: For 138387/138389 co-relation queries the response was YES. [2024-06-28 01:33:21,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37312 conditions, 7663 events. 5055/7663 cut-off events. For 138387/138389 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 45609 event pairs, 1162 based on Foata normal form. 6/7647 useless extension candidates. Maximal degree in co-relation 37261. Up to 6399 conditions per place. [2024-06-28 01:33:21,450 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 114 selfloop transitions, 65 changer transitions 0/191 dead transitions. [2024-06-28 01:33:21,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 191 transitions, 1780 flow [2024-06-28 01:33:21,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:21,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-28 01:33:21,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:33:21,452 INFO L175 Difference]: Start difference. First operand has 124 places, 143 transitions, 1188 flow. Second operand 8 states and 216 transitions. [2024-06-28 01:33:21,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 191 transitions, 1780 flow [2024-06-28 01:33:21,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 191 transitions, 1607 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:21,573 INFO L231 Difference]: Finished difference. Result has 127 places, 143 transitions, 1153 flow [2024-06-28 01:33:21,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1153, PETRI_PLACES=127, PETRI_TRANSITIONS=143} [2024-06-28 01:33:21,573 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2024-06-28 01:33:21,574 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 143 transitions, 1153 flow [2024-06-28 01:33:21,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:21,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:21,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:21,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:33:21,574 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:21,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash 96651721, now seen corresponding path program 6 times [2024-06-28 01:33:21,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:21,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059925580] [2024-06-28 01:33:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:21,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:22,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:22,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059925580] [2024-06-28 01:33:22,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059925580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:22,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:22,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:22,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234308660] [2024-06-28 01:33:22,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:22,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:22,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:22,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:22,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:22,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 143 transitions, 1153 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:22,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:22,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:22,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:23,801 INFO L124 PetriNetUnfolderBase]: 5045/7649 cut-off events. [2024-06-28 01:33:23,802 INFO L125 PetriNetUnfolderBase]: For 142785/142787 co-relation queries the response was YES. [2024-06-28 01:33:23,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37217 conditions, 7649 events. 5045/7649 cut-off events. For 142785/142787 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 45457 event pairs, 1151 based on Foata normal form. 6/7633 useless extension candidates. Maximal degree in co-relation 37165. Up to 6391 conditions per place. [2024-06-28 01:33:23,865 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 116 selfloop transitions, 62 changer transitions 0/190 dead transitions. [2024-06-28 01:33:23,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 190 transitions, 1635 flow [2024-06-28 01:33:23,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:23,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-28 01:33:23,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:33:23,866 INFO L175 Difference]: Start difference. First operand has 127 places, 143 transitions, 1153 flow. Second operand 8 states and 216 transitions. [2024-06-28 01:33:23,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 190 transitions, 1635 flow [2024-06-28 01:33:23,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 190 transitions, 1481 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:23,957 INFO L231 Difference]: Finished difference. Result has 128 places, 143 transitions, 1131 flow [2024-06-28 01:33:23,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1131, PETRI_PLACES=128, PETRI_TRANSITIONS=143} [2024-06-28 01:33:23,958 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2024-06-28 01:33:23,958 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 143 transitions, 1131 flow [2024-06-28 01:33:23,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:23,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:23,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:23,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:33:23,958 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:23,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:23,959 INFO L85 PathProgramCache]: Analyzing trace with hash -852206581, now seen corresponding path program 2 times [2024-06-28 01:33:23,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:23,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547403608] [2024-06-28 01:33:23,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:23,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:24,829 INFO 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 01:33:24,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:24,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547403608] [2024-06-28 01:33:24,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547403608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:24,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:24,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:24,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723645378] [2024-06-28 01:33:24,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:24,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:24,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:24,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:24,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:24,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:33:24,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 143 transitions, 1131 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:24,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:24,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:33:24,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:25,828 INFO L124 PetriNetUnfolderBase]: 4861/7872 cut-off events. [2024-06-28 01:33:25,828 INFO L125 PetriNetUnfolderBase]: For 149961/149984 co-relation queries the response was YES. [2024-06-28 01:33:25,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37065 conditions, 7872 events. 4861/7872 cut-off events. For 149961/149984 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 51582 event pairs, 1692 based on Foata normal form. 13/7733 useless extension candidates. Maximal degree in co-relation 37012. Up to 6809 conditions per place. [2024-06-28 01:33:25,890 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 127 selfloop transitions, 18 changer transitions 0/165 dead transitions. [2024-06-28 01:33:25,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 165 transitions, 1505 flow [2024-06-28 01:33:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 01:33:25,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-28 01:33:25,892 INFO L175 Difference]: Start difference. First operand has 128 places, 143 transitions, 1131 flow. Second operand 6 states and 153 transitions. [2024-06-28 01:33:25,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 165 transitions, 1505 flow [2024-06-28 01:33:25,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 165 transitions, 1343 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:25,981 INFO L231 Difference]: Finished difference. Result has 126 places, 146 transitions, 1051 flow [2024-06-28 01:33:25,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1051, PETRI_PLACES=126, PETRI_TRANSITIONS=146} [2024-06-28 01:33:25,982 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2024-06-28 01:33:25,982 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 146 transitions, 1051 flow [2024-06-28 01:33:25,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:25,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:25,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:25,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:33:25,983 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:25,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash -859848949, now seen corresponding path program 1 times [2024-06-28 01:33:25,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:25,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081981770] [2024-06-28 01:33:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:25,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:26,716 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 01:33:26,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081981770] [2024-06-28 01:33:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081981770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:26,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:26,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651429073] [2024-06-28 01:33:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:26,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:26,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:26,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:33:26,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 146 transitions, 1051 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:26,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:26,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:33:26,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:27,647 INFO L124 PetriNetUnfolderBase]: 4297/7191 cut-off events. [2024-06-28 01:33:27,647 INFO L125 PetriNetUnfolderBase]: For 137499/137509 co-relation queries the response was YES. [2024-06-28 01:33:27,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33674 conditions, 7191 events. 4297/7191 cut-off events. For 137499/137509 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 48321 event pairs, 1443 based on Foata normal form. 3/7042 useless extension candidates. Maximal degree in co-relation 33620. Up to 6032 conditions per place. [2024-06-28 01:33:27,702 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 139 selfloop transitions, 13 changer transitions 0/173 dead transitions. [2024-06-28 01:33:27,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 173 transitions, 1467 flow [2024-06-28 01:33:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:27,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 01:33:27,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-06-28 01:33:27,703 INFO L175 Difference]: Start difference. First operand has 126 places, 146 transitions, 1051 flow. Second operand 6 states and 158 transitions. [2024-06-28 01:33:27,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 173 transitions, 1467 flow [2024-06-28 01:33:27,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 173 transitions, 1407 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:27,785 INFO L231 Difference]: Finished difference. Result has 129 places, 153 transitions, 1104 flow [2024-06-28 01:33:27,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1104, PETRI_PLACES=129, PETRI_TRANSITIONS=153} [2024-06-28 01:33:27,786 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 73 predicate places. [2024-06-28 01:33:27,786 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 153 transitions, 1104 flow [2024-06-28 01:33:27,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:27,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:27,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:27,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:33:27,786 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:27,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:27,787 INFO L85 PathProgramCache]: Analyzing trace with hash -852200629, now seen corresponding path program 2 times [2024-06-28 01:33:27,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:27,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479909553] [2024-06-28 01:33:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:27,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:28,567 INFO 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 01:33:28,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:28,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479909553] [2024-06-28 01:33:28,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479909553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:28,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:28,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:28,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408232932] [2024-06-28 01:33:28,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:28,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:28,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:28,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:28,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:28,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:33:28,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 153 transitions, 1104 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:28,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:28,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:33:28,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:29,516 INFO L124 PetriNetUnfolderBase]: 4295/7297 cut-off events. [2024-06-28 01:33:29,516 INFO L125 PetriNetUnfolderBase]: For 146545/146559 co-relation queries the response was YES. [2024-06-28 01:33:29,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34851 conditions, 7297 events. 4295/7297 cut-off events. For 146545/146559 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 49898 event pairs, 1440 based on Foata normal form. 7/7122 useless extension candidates. Maximal degree in co-relation 34795. Up to 6011 conditions per place. [2024-06-28 01:33:29,564 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 136 selfloop transitions, 18 changer transitions 0/175 dead transitions. [2024-06-28 01:33:29,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 175 transitions, 1502 flow [2024-06-28 01:33:29,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:29,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:29,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 01:33:29,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-06-28 01:33:29,565 INFO L175 Difference]: Start difference. First operand has 129 places, 153 transitions, 1104 flow. Second operand 6 states and 158 transitions. [2024-06-28 01:33:29,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 175 transitions, 1502 flow [2024-06-28 01:33:29,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 175 transitions, 1457 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:29,645 INFO L231 Difference]: Finished difference. Result has 132 places, 156 transitions, 1143 flow [2024-06-28 01:33:29,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1143, PETRI_PLACES=132, PETRI_TRANSITIONS=156} [2024-06-28 01:33:29,645 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-06-28 01:33:29,645 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 156 transitions, 1143 flow [2024-06-28 01:33:29,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:29,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:29,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:29,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:33:29,646 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:29,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:29,646 INFO L85 PathProgramCache]: Analyzing trace with hash 105240271, now seen corresponding path program 1 times [2024-06-28 01:33:29,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:29,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078735423] [2024-06-28 01:33:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:29,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:30,932 INFO 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 01:33:30,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:30,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078735423] [2024-06-28 01:33:30,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078735423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:30,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:30,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:30,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254508552] [2024-06-28 01:33:30,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:30,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:30,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:30,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:30,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:31,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:33:31,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 156 transitions, 1143 flow. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:31,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:31,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:33:31,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:32,483 INFO L124 PetriNetUnfolderBase]: 4524/7462 cut-off events. [2024-06-28 01:33:32,484 INFO L125 PetriNetUnfolderBase]: For 155965/155965 co-relation queries the response was YES. [2024-06-28 01:33:32,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36565 conditions, 7462 events. 4524/7462 cut-off events. For 155965/155965 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 49283 event pairs, 1424 based on Foata normal form. 4/7306 useless extension candidates. Maximal degree in co-relation 36508. Up to 6308 conditions per place. [2024-06-28 01:33:32,549 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 173 selfloop transitions, 25 changer transitions 0/211 dead transitions. [2024-06-28 01:33:32,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 211 transitions, 1729 flow [2024-06-28 01:33:32,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:32,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:32,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 01:33:32,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-06-28 01:33:32,550 INFO L175 Difference]: Start difference. First operand has 132 places, 156 transitions, 1143 flow. Second operand 9 states and 237 transitions. [2024-06-28 01:33:32,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 211 transitions, 1729 flow [2024-06-28 01:33:32,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 211 transitions, 1667 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:32,643 INFO L231 Difference]: Finished difference. Result has 138 places, 161 transitions, 1200 flow [2024-06-28 01:33:32,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1200, PETRI_PLACES=138, PETRI_TRANSITIONS=161} [2024-06-28 01:33:32,644 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 82 predicate places. [2024-06-28 01:33:32,644 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 161 transitions, 1200 flow [2024-06-28 01:33:32,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:32,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:32,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:32,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:33:32,645 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:32,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:32,645 INFO L85 PathProgramCache]: Analyzing trace with hash 394563633, now seen corresponding path program 1 times [2024-06-28 01:33:32,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:32,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438526243] [2024-06-28 01:33:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:32,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:33,692 INFO 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 01:33:33,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:33,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438526243] [2024-06-28 01:33:33,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438526243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:33,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:33,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:33,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369985701] [2024-06-28 01:33:33,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:33,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:33,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:33,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:33,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:33,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:33:33,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 161 transitions, 1200 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:33,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:33,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:33:33,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:34,698 INFO L124 PetriNetUnfolderBase]: 4653/7717 cut-off events. [2024-06-28 01:33:34,698 INFO L125 PetriNetUnfolderBase]: For 163944/163956 co-relation queries the response was YES. [2024-06-28 01:33:34,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38065 conditions, 7717 events. 4653/7717 cut-off events. For 163944/163956 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 51582 event pairs, 1563 based on Foata normal form. 5/7558 useless extension candidates. Maximal degree in co-relation 38006. Up to 6591 conditions per place. [2024-06-28 01:33:34,760 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 154 selfloop transitions, 15 changer transitions 0/188 dead transitions. [2024-06-28 01:33:34,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 188 transitions, 1648 flow [2024-06-28 01:33:34,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:34,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:33:34,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49714285714285716 [2024-06-28 01:33:34,761 INFO L175 Difference]: Start difference. First operand has 138 places, 161 transitions, 1200 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:33:34,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 188 transitions, 1648 flow [2024-06-28 01:33:34,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 188 transitions, 1569 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:34,862 INFO L231 Difference]: Finished difference. Result has 139 places, 164 transitions, 1203 flow [2024-06-28 01:33:34,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1203, PETRI_PLACES=139, PETRI_TRANSITIONS=164} [2024-06-28 01:33:34,862 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 83 predicate places. [2024-06-28 01:33:34,863 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 164 transitions, 1203 flow [2024-06-28 01:33:34,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:34,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:34,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:34,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:33:34,863 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:34,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:34,864 INFO L85 PathProgramCache]: Analyzing trace with hash -746200591, now seen corresponding path program 1 times [2024-06-28 01:33:34,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:34,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775585419] [2024-06-28 01:33:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:34,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:35,786 INFO 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 01:33:35,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:35,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775585419] [2024-06-28 01:33:35,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775585419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:35,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:35,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:35,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828048371] [2024-06-28 01:33:35,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:35,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:35,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:35,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:35,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 164 transitions, 1203 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:35,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:35,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:35,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:37,110 INFO L124 PetriNetUnfolderBase]: 5187/8200 cut-off events. [2024-06-28 01:33:37,110 INFO L125 PetriNetUnfolderBase]: For 203086/203094 co-relation queries the response was YES. [2024-06-28 01:33:37,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42874 conditions, 8200 events. 5187/8200 cut-off events. For 203086/203094 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 51918 event pairs, 1223 based on Foata normal form. 9/8073 useless extension candidates. Maximal degree in co-relation 42814. Up to 6752 conditions per place. [2024-06-28 01:33:37,176 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 162 selfloop transitions, 45 changer transitions 0/219 dead transitions. [2024-06-28 01:33:37,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 219 transitions, 1945 flow [2024-06-28 01:33:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:37,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:37,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-28 01:33:37,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:33:37,178 INFO L175 Difference]: Start difference. First operand has 139 places, 164 transitions, 1203 flow. Second operand 8 states and 216 transitions. [2024-06-28 01:33:37,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 219 transitions, 1945 flow [2024-06-28 01:33:37,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 219 transitions, 1885 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:37,305 INFO L231 Difference]: Finished difference. Result has 142 places, 168 transitions, 1300 flow [2024-06-28 01:33:37,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1300, PETRI_PLACES=142, PETRI_TRANSITIONS=168} [2024-06-28 01:33:37,306 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 86 predicate places. [2024-06-28 01:33:37,306 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 168 transitions, 1300 flow [2024-06-28 01:33:37,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:37,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:37,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:37,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:33:37,307 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:37,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:37,307 INFO L85 PathProgramCache]: Analyzing trace with hash -744322921, now seen corresponding path program 2 times [2024-06-28 01:33:37,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:37,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754238292] [2024-06-28 01:33:37,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:37,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:38,216 INFO 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 01:33:38,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:38,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754238292] [2024-06-28 01:33:38,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754238292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:38,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:38,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:38,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96885175] [2024-06-28 01:33:38,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:38,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:38,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:38,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:38,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:38,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:38,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 168 transitions, 1300 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:38,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:38,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:38,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:39,659 INFO L124 PetriNetUnfolderBase]: 5208/8227 cut-off events. [2024-06-28 01:33:39,659 INFO L125 PetriNetUnfolderBase]: For 213856/213864 co-relation queries the response was YES. [2024-06-28 01:33:39,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43839 conditions, 8227 events. 5208/8227 cut-off events. For 213856/213864 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 52193 event pairs, 1611 based on Foata normal form. 9/8103 useless extension candidates. Maximal degree in co-relation 43778. Up to 7052 conditions per place. [2024-06-28 01:33:39,729 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 161 selfloop transitions, 44 changer transitions 0/217 dead transitions. [2024-06-28 01:33:39,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 217 transitions, 1880 flow [2024-06-28 01:33:39,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:39,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-28 01:33:39,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535 [2024-06-28 01:33:39,730 INFO L175 Difference]: Start difference. First operand has 142 places, 168 transitions, 1300 flow. Second operand 8 states and 214 transitions. [2024-06-28 01:33:39,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 217 transitions, 1880 flow [2024-06-28 01:33:39,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 217 transitions, 1795 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:39,867 INFO L231 Difference]: Finished difference. Result has 146 places, 170 transitions, 1346 flow [2024-06-28 01:33:39,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1346, PETRI_PLACES=146, PETRI_TRANSITIONS=170} [2024-06-28 01:33:39,867 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 90 predicate places. [2024-06-28 01:33:39,868 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 170 transitions, 1346 flow [2024-06-28 01:33:39,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:39,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:39,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:39,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:33:39,868 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:39,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:39,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1138087465, now seen corresponding path program 3 times [2024-06-28 01:33:39,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:39,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824489399] [2024-06-28 01:33:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:40,937 INFO 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 01:33:40,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:40,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824489399] [2024-06-28 01:33:40,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824489399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:40,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:40,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:40,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562438246] [2024-06-28 01:33:40,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:40,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:40,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:40,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:41,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:41,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 170 transitions, 1346 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:41,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:41,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:41,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:42,322 INFO L124 PetriNetUnfolderBase]: 5245/8278 cut-off events. [2024-06-28 01:33:42,322 INFO L125 PetriNetUnfolderBase]: For 223398/223406 co-relation queries the response was YES. [2024-06-28 01:33:42,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44478 conditions, 8278 events. 5245/8278 cut-off events. For 223398/223406 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 52457 event pairs, 1611 based on Foata normal form. 9/8155 useless extension candidates. Maximal degree in co-relation 44415. Up to 7030 conditions per place. [2024-06-28 01:33:42,391 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 161 selfloop transitions, 47 changer transitions 0/220 dead transitions. [2024-06-28 01:33:42,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 220 transitions, 1930 flow [2024-06-28 01:33:42,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:42,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:42,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 01:33:42,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-28 01:33:42,393 INFO L175 Difference]: Start difference. First operand has 146 places, 170 transitions, 1346 flow. Second operand 8 states and 215 transitions. [2024-06-28 01:33:42,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 220 transitions, 1930 flow [2024-06-28 01:33:42,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 220 transitions, 1829 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:42,563 INFO L231 Difference]: Finished difference. Result has 148 places, 172 transitions, 1378 flow [2024-06-28 01:33:42,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1378, PETRI_PLACES=148, PETRI_TRANSITIONS=172} [2024-06-28 01:33:42,563 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 92 predicate places. [2024-06-28 01:33:42,564 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 172 transitions, 1378 flow [2024-06-28 01:33:42,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:42,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:42,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:42,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:33:42,564 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:42,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:42,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1063188069, now seen corresponding path program 1 times [2024-06-28 01:33:42,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:42,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773979476] [2024-06-28 01:33:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:42,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:43,356 INFO 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 01:33:43,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:43,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773979476] [2024-06-28 01:33:43,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773979476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:43,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:43,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:43,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400649444] [2024-06-28 01:33:43,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:43,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:43,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:43,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:43,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:43,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:33:43,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 172 transitions, 1378 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:43,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:43,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:33:43,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:44,706 INFO L124 PetriNetUnfolderBase]: 5005/8059 cut-off events. [2024-06-28 01:33:44,706 INFO L125 PetriNetUnfolderBase]: For 232144/232156 co-relation queries the response was YES. [2024-06-28 01:33:44,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43645 conditions, 8059 events. 5005/8059 cut-off events. For 232144/232156 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 52609 event pairs, 1620 based on Foata normal form. 14/7935 useless extension candidates. Maximal degree in co-relation 43581. Up to 6901 conditions per place. [2024-06-28 01:33:44,788 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 168 selfloop transitions, 29 changer transitions 0/221 dead transitions. [2024-06-28 01:33:44,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 221 transitions, 2030 flow [2024-06-28 01:33:44,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:44,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-28 01:33:44,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:33:44,791 INFO L175 Difference]: Start difference. First operand has 148 places, 172 transitions, 1378 flow. Second operand 7 states and 189 transitions. [2024-06-28 01:33:44,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 221 transitions, 2030 flow [2024-06-28 01:33:44,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 221 transitions, 1905 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:44,920 INFO L231 Difference]: Finished difference. Result has 151 places, 189 transitions, 1550 flow [2024-06-28 01:33:44,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1550, PETRI_PLACES=151, PETRI_TRANSITIONS=189} [2024-06-28 01:33:44,921 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 95 predicate places. [2024-06-28 01:33:44,921 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 189 transitions, 1550 flow [2024-06-28 01:33:44,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:44,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:44,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:44,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:33:44,922 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:44,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:44,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1047277899, now seen corresponding path program 4 times [2024-06-28 01:33:44,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:44,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783910248] [2024-06-28 01:33:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:44,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:45,853 INFO 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 01:33:45,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:45,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783910248] [2024-06-28 01:33:45,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783910248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:45,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:45,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:45,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229886784] [2024-06-28 01:33:45,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:45,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:45,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:45,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:45,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:45,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:45,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 189 transitions, 1550 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:45,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:45,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:45,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:47,382 INFO L124 PetriNetUnfolderBase]: 5316/8419 cut-off events. [2024-06-28 01:33:47,382 INFO L125 PetriNetUnfolderBase]: For 249755/249763 co-relation queries the response was YES. [2024-06-28 01:33:47,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47066 conditions, 8419 events. 5316/8419 cut-off events. For 249755/249763 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 53717 event pairs, 1242 based on Foata normal form. 9/8287 useless extension candidates. Maximal degree in co-relation 46999. Up to 7061 conditions per place. [2024-06-28 01:33:47,446 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 173 selfloop transitions, 59 changer transitions 0/244 dead transitions. [2024-06-28 01:33:47,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 244 transitions, 2358 flow [2024-06-28 01:33:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:47,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-28 01:33:47,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5525 [2024-06-28 01:33:47,448 INFO L175 Difference]: Start difference. First operand has 151 places, 189 transitions, 1550 flow. Second operand 8 states and 221 transitions. [2024-06-28 01:33:47,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 244 transitions, 2358 flow [2024-06-28 01:33:47,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 244 transitions, 2273 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:47,615 INFO L231 Difference]: Finished difference. Result has 156 places, 191 transitions, 1622 flow [2024-06-28 01:33:47,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1622, PETRI_PLACES=156, PETRI_TRANSITIONS=191} [2024-06-28 01:33:47,615 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 100 predicate places. [2024-06-28 01:33:47,616 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 191 transitions, 1622 flow [2024-06-28 01:33:47,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:47,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:47,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:47,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:33:47,616 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:47,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:47,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1378427987, now seen corresponding path program 5 times [2024-06-28 01:33:47,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:47,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403874288] [2024-06-28 01:33:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:47,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:48,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:48,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403874288] [2024-06-28 01:33:48,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403874288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:48,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:48,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:48,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952014683] [2024-06-28 01:33:48,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:48,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:48,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:48,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:48,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:48,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:48,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 191 transitions, 1622 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:48,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:48,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:48,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:50,095 INFO L124 PetriNetUnfolderBase]: 5353/8482 cut-off events. [2024-06-28 01:33:50,095 INFO L125 PetriNetUnfolderBase]: For 261736/261744 co-relation queries the response was YES. [2024-06-28 01:33:50,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47855 conditions, 8482 events. 5353/8482 cut-off events. For 261736/261744 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 54288 event pairs, 1622 based on Foata normal form. 9/8348 useless extension candidates. Maximal degree in co-relation 47787. Up to 7263 conditions per place. [2024-06-28 01:33:50,156 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 175 selfloop transitions, 56 changer transitions 0/243 dead transitions. [2024-06-28 01:33:50,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 243 transitions, 2286 flow [2024-06-28 01:33:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-28 01:33:50,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425 [2024-06-28 01:33:50,157 INFO L175 Difference]: Start difference. First operand has 156 places, 191 transitions, 1622 flow. Second operand 8 states and 217 transitions. [2024-06-28 01:33:50,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 243 transitions, 2286 flow [2024-06-28 01:33:50,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 243 transitions, 2134 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:50,287 INFO L231 Difference]: Finished difference. Result has 158 places, 193 transitions, 1629 flow [2024-06-28 01:33:50,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1629, PETRI_PLACES=158, PETRI_TRANSITIONS=193} [2024-06-28 01:33:50,289 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 102 predicate places. [2024-06-28 01:33:50,289 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 193 transitions, 1629 flow [2024-06-28 01:33:50,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:50,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:50,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:50,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:33:50,290 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:50,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:50,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2074161799, now seen corresponding path program 6 times [2024-06-28 01:33:50,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:50,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68350806] [2024-06-28 01:33:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:50,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:51,164 INFO 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 01:33:51,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:51,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68350806] [2024-06-28 01:33:51,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68350806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:51,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:51,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:51,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453482007] [2024-06-28 01:33:51,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:51,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:51,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:51,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:51,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:51,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:51,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 193 transitions, 1629 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:51,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:51,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:51,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:52,640 INFO L124 PetriNetUnfolderBase]: 5390/8547 cut-off events. [2024-06-28 01:33:52,640 INFO L125 PetriNetUnfolderBase]: For 272634/272642 co-relation queries the response was YES. [2024-06-28 01:33:52,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48266 conditions, 8547 events. 5390/8547 cut-off events. For 272634/272642 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 54846 event pairs, 1624 based on Foata normal form. 9/8410 useless extension candidates. Maximal degree in co-relation 48197. Up to 7318 conditions per place. [2024-06-28 01:33:52,734 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 179 selfloop transitions, 51 changer transitions 0/242 dead transitions. [2024-06-28 01:33:52,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 242 transitions, 2283 flow [2024-06-28 01:33:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 01:33:52,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5325 [2024-06-28 01:33:52,735 INFO L175 Difference]: Start difference. First operand has 158 places, 193 transitions, 1629 flow. Second operand 8 states and 213 transitions. [2024-06-28 01:33:52,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 242 transitions, 2283 flow [2024-06-28 01:33:53,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 242 transitions, 2150 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:53,061 INFO L231 Difference]: Finished difference. Result has 160 places, 195 transitions, 1645 flow [2024-06-28 01:33:53,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1645, PETRI_PLACES=160, PETRI_TRANSITIONS=195} [2024-06-28 01:33:53,062 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 104 predicate places. [2024-06-28 01:33:53,062 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 195 transitions, 1645 flow [2024-06-28 01:33:53,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:53,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:53,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:53,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:33:53,063 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:53,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:53,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1062828624, now seen corresponding path program 1 times [2024-06-28 01:33:53,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:53,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872903249] [2024-06-28 01:33:53,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:53,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:53,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:53,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872903249] [2024-06-28 01:33:53,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872903249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:53,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:53,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:53,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760700299] [2024-06-28 01:33:53,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:53,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:53,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:53,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:53,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:54,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:54,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 195 transitions, 1645 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:54,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:54,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:54,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:55,146 INFO L124 PetriNetUnfolderBase]: 5463/8665 cut-off events. [2024-06-28 01:33:55,146 INFO L125 PetriNetUnfolderBase]: For 280034/280038 co-relation queries the response was YES. [2024-06-28 01:33:55,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48523 conditions, 8665 events. 5463/8665 cut-off events. For 280034/280038 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 55916 event pairs, 1800 based on Foata normal form. 5/8524 useless extension candidates. Maximal degree in co-relation 48453. Up to 7703 conditions per place. [2024-06-28 01:33:55,229 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 185 selfloop transitions, 16 changer transitions 0/226 dead transitions. [2024-06-28 01:33:55,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 226 transitions, 2171 flow [2024-06-28 01:33:55,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:33:55,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942857142857143 [2024-06-28 01:33:55,230 INFO L175 Difference]: Start difference. First operand has 160 places, 195 transitions, 1645 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:33:55,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 226 transitions, 2171 flow [2024-06-28 01:33:55,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 226 transitions, 2044 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:55,419 INFO L231 Difference]: Finished difference. Result has 161 places, 198 transitions, 1602 flow [2024-06-28 01:33:55,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1602, PETRI_PLACES=161, PETRI_TRANSITIONS=198} [2024-06-28 01:33:55,420 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 105 predicate places. [2024-06-28 01:33:55,420 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 198 transitions, 1602 flow [2024-06-28 01:33:55,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:55,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:55,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:55,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:33:55,421 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:55,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:55,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1062829089, now seen corresponding path program 2 times [2024-06-28 01:33:55,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:55,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934559801] [2024-06-28 01:33:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:55,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:56,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:56,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934559801] [2024-06-28 01:33:56,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934559801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:56,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:56,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:56,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224921522] [2024-06-28 01:33:56,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:56,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:56,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:56,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:56,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:56,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:33:56,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 198 transitions, 1602 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:56,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:56,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:33:56,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:57,806 INFO L124 PetriNetUnfolderBase]: 5219/8405 cut-off events. [2024-06-28 01:33:57,807 INFO L125 PetriNetUnfolderBase]: For 297351/297379 co-relation queries the response was YES. [2024-06-28 01:33:57,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48760 conditions, 8405 events. 5219/8405 cut-off events. For 297351/297379 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 55191 event pairs, 1626 based on Foata normal form. 14/8267 useless extension candidates. Maximal degree in co-relation 48689. Up to 7101 conditions per place. [2024-06-28 01:33:57,893 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 173 selfloop transitions, 34 changer transitions 0/235 dead transitions. [2024-06-28 01:33:57,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 235 transitions, 2304 flow [2024-06-28 01:33:57,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:57,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 01:33:57,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-06-28 01:33:57,898 INFO L175 Difference]: Start difference. First operand has 161 places, 198 transitions, 1602 flow. Second operand 7 states and 186 transitions. [2024-06-28 01:33:57,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 235 transitions, 2304 flow [2024-06-28 01:33:58,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 235 transitions, 2242 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:58,127 INFO L231 Difference]: Finished difference. Result has 164 places, 206 transitions, 1756 flow [2024-06-28 01:33:58,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1756, PETRI_PLACES=164, PETRI_TRANSITIONS=206} [2024-06-28 01:33:58,128 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 108 predicate places. [2024-06-28 01:33:58,128 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 206 transitions, 1756 flow [2024-06-28 01:33:58,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:58,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:58,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:58,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:33:58,129 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:58,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:58,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1298768733, now seen corresponding path program 7 times [2024-06-28 01:33:58,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:58,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642051149] [2024-06-28 01:33:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:58,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:58,983 INFO 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 01:33:58,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:58,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642051149] [2024-06-28 01:33:58,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642051149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:58,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:58,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:58,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64317120] [2024-06-28 01:33:58,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:58,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:58,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:58,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:58,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:59,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:33:59,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 206 transitions, 1756 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:59,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:59,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:33:59,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:00,533 INFO L124 PetriNetUnfolderBase]: 5518/8721 cut-off events. [2024-06-28 01:34:00,533 INFO L125 PetriNetUnfolderBase]: For 317390/317410 co-relation queries the response was YES. [2024-06-28 01:34:00,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51954 conditions, 8721 events. 5518/8721 cut-off events. For 317390/317410 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 55825 event pairs, 1663 based on Foata normal form. 12/8578 useless extension candidates. Maximal degree in co-relation 51881. Up to 7469 conditions per place. [2024-06-28 01:34:00,612 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 188 selfloop transitions, 48 changer transitions 0/249 dead transitions. [2024-06-28 01:34:00,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 249 transitions, 2366 flow [2024-06-28 01:34:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:34:00,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225 [2024-06-28 01:34:00,613 INFO L175 Difference]: Start difference. First operand has 164 places, 206 transitions, 1756 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:34:00,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 249 transitions, 2366 flow [2024-06-28 01:34:00,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 249 transitions, 2256 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-28 01:34:00,847 INFO L231 Difference]: Finished difference. Result has 169 places, 206 transitions, 1749 flow [2024-06-28 01:34:00,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1646, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1749, PETRI_PLACES=169, PETRI_TRANSITIONS=206} [2024-06-28 01:34:00,848 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 113 predicate places. [2024-06-28 01:34:00,848 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 206 transitions, 1749 flow [2024-06-28 01:34:00,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:00,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:00,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:00,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:34:00,849 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:00,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:00,849 INFO L85 PathProgramCache]: Analyzing trace with hash -648094194, now seen corresponding path program 2 times [2024-06-28 01:34:00,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:00,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601254157] [2024-06-28 01:34:00,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:00,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:01,709 INFO 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 01:34:01,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:01,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601254157] [2024-06-28 01:34:01,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601254157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:01,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:01,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:01,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381243089] [2024-06-28 01:34:01,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:01,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:01,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:01,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:01,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:01,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 206 transitions, 1749 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:01,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:01,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:01,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:02,943 INFO L124 PetriNetUnfolderBase]: 5553/8996 cut-off events. [2024-06-28 01:34:02,943 INFO L125 PetriNetUnfolderBase]: For 323558/323580 co-relation queries the response was YES. [2024-06-28 01:34:03,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52285 conditions, 8996 events. 5553/8996 cut-off events. For 323558/323580 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 59938 event pairs, 1798 based on Foata normal form. 19/8817 useless extension candidates. Maximal degree in co-relation 52210. Up to 7774 conditions per place. [2024-06-28 01:34:03,205 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 183 selfloop transitions, 29 changer transitions 0/237 dead transitions. [2024-06-28 01:34:03,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 237 transitions, 2447 flow [2024-06-28 01:34:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:34:03,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:34:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:34:03,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144 [2024-06-28 01:34:03,206 INFO L175 Difference]: Start difference. First operand has 169 places, 206 transitions, 1749 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:34:03,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 237 transitions, 2447 flow [2024-06-28 01:34:03,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 237 transitions, 2328 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:03,370 INFO L231 Difference]: Finished difference. Result has 169 places, 212 transitions, 1800 flow [2024-06-28 01:34:03,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1800, PETRI_PLACES=169, PETRI_TRANSITIONS=212} [2024-06-28 01:34:03,370 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 113 predicate places. [2024-06-28 01:34:03,371 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 212 transitions, 1800 flow [2024-06-28 01:34:03,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:03,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:03,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:03,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:34:03,371 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:03,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:03,372 INFO L85 PathProgramCache]: Analyzing trace with hash -653950998, now seen corresponding path program 3 times [2024-06-28 01:34:03,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:03,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70578964] [2024-06-28 01:34:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:03,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:04,208 INFO 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 01:34:04,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:04,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70578964] [2024-06-28 01:34:04,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70578964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:04,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:04,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:04,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15238780] [2024-06-28 01:34:04,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:04,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:04,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:04,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:04,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:04,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:04,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 212 transitions, 1800 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:04,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:04,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:04,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:05,481 INFO L124 PetriNetUnfolderBase]: 5550/8987 cut-off events. [2024-06-28 01:34:05,481 INFO L125 PetriNetUnfolderBase]: For 338451/338473 co-relation queries the response was YES. [2024-06-28 01:34:05,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53034 conditions, 8987 events. 5550/8987 cut-off events. For 338451/338473 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 59804 event pairs, 1800 based on Foata normal form. 19/8810 useless extension candidates. Maximal degree in co-relation 52958. Up to 7771 conditions per place. [2024-06-28 01:34:05,570 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 183 selfloop transitions, 28 changer transitions 0/236 dead transitions. [2024-06-28 01:34:05,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 236 transitions, 2304 flow [2024-06-28 01:34:05,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:34:05,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:34:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:34:05,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144 [2024-06-28 01:34:05,571 INFO L175 Difference]: Start difference. First operand has 169 places, 212 transitions, 1800 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:34:05,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 236 transitions, 2304 flow [2024-06-28 01:34:05,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 236 transitions, 2206 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-28 01:34:05,863 INFO L231 Difference]: Finished difference. Result has 173 places, 212 transitions, 1764 flow [2024-06-28 01:34:05,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1764, PETRI_PLACES=173, PETRI_TRANSITIONS=212} [2024-06-28 01:34:05,864 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 117 predicate places. [2024-06-28 01:34:05,864 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 212 transitions, 1764 flow [2024-06-28 01:34:05,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:05,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:05,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:05,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:34:05,864 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:05,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:05,865 INFO L85 PathProgramCache]: Analyzing trace with hash -653951463, now seen corresponding path program 3 times [2024-06-28 01:34:05,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:05,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74544104] [2024-06-28 01:34:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:05,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:06,761 INFO 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 01:34:06,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:06,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74544104] [2024-06-28 01:34:06,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74544104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:06,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:06,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:06,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737985544] [2024-06-28 01:34:06,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:06,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:06,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:06,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:06,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:06,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:34:06,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 212 transitions, 1764 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:06,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:06,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:34:06,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:07,970 INFO L124 PetriNetUnfolderBase]: 5245/8585 cut-off events. [2024-06-28 01:34:07,971 INFO L125 PetriNetUnfolderBase]: For 350134/350178 co-relation queries the response was YES. [2024-06-28 01:34:08,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51943 conditions, 8585 events. 5245/8585 cut-off events. For 350134/350178 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 57564 event pairs, 1637 based on Foata normal form. 12/8407 useless extension candidates. Maximal degree in co-relation 51865. Up to 7038 conditions per place. [2024-06-28 01:34:08,069 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 169 selfloop transitions, 47 changer transitions 0/246 dead transitions. [2024-06-28 01:34:08,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 246 transitions, 2606 flow [2024-06-28 01:34:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:34:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:34:08,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 01:34:08,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-06-28 01:34:08,070 INFO L175 Difference]: Start difference. First operand has 173 places, 212 transitions, 1764 flow. Second operand 7 states and 185 transitions. [2024-06-28 01:34:08,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 246 transitions, 2606 flow [2024-06-28 01:34:08,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 246 transitions, 2532 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:08,371 INFO L231 Difference]: Finished difference. Result has 175 places, 220 transitions, 1948 flow [2024-06-28 01:34:08,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1948, PETRI_PLACES=175, PETRI_TRANSITIONS=220} [2024-06-28 01:34:08,371 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 119 predicate places. [2024-06-28 01:34:08,371 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 220 transitions, 1948 flow [2024-06-28 01:34:08,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:08,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:08,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:08,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:34:08,372 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:08,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:08,372 INFO L85 PathProgramCache]: Analyzing trace with hash -409025643, now seen corresponding path program 1 times [2024-06-28 01:34:08,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:08,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454061799] [2024-06-28 01:34:08,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:08,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:09,155 INFO 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 01:34:09,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:09,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454061799] [2024-06-28 01:34:09,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454061799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:09,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:09,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:09,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792851652] [2024-06-28 01:34:09,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:09,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:09,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:09,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:34:09,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 220 transitions, 1948 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:09,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:09,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:34:09,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:10,579 INFO L124 PetriNetUnfolderBase]: 4963/8167 cut-off events. [2024-06-28 01:34:10,580 INFO L125 PetriNetUnfolderBase]: For 322274/322319 co-relation queries the response was YES. [2024-06-28 01:34:10,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50074 conditions, 8167 events. 4963/8167 cut-off events. For 322274/322319 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 54359 event pairs, 1432 based on Foata normal form. 6/7995 useless extension candidates. Maximal degree in co-relation 49994. Up to 6976 conditions per place. [2024-06-28 01:34:10,647 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 220 selfloop transitions, 17 changer transitions 0/253 dead transitions. [2024-06-28 01:34:10,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 253 transitions, 2575 flow [2024-06-28 01:34:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:34:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:34:10,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:34:10,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085714285714286 [2024-06-28 01:34:10,648 INFO L175 Difference]: Start difference. First operand has 175 places, 220 transitions, 1948 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:34:10,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 253 transitions, 2575 flow [2024-06-28 01:34:10,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 253 transitions, 2415 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 01:34:10,913 INFO L231 Difference]: Finished difference. Result has 179 places, 227 transitions, 1930 flow [2024-06-28 01:34:10,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1930, PETRI_PLACES=179, PETRI_TRANSITIONS=227} [2024-06-28 01:34:10,914 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 123 predicate places. [2024-06-28 01:34:10,914 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 227 transitions, 1930 flow [2024-06-28 01:34:10,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:10,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:10,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:10,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:34:10,915 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:10,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:10,915 INFO L85 PathProgramCache]: Analyzing trace with hash -416705100, now seen corresponding path program 1 times [2024-06-28 01:34:10,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:10,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192537804] [2024-06-28 01:34:10,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:10,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:11,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:11,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192537804] [2024-06-28 01:34:11,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192537804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:11,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:11,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:11,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773529518] [2024-06-28 01:34:11,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:11,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:11,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:11,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:11,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:11,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:34:11,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 227 transitions, 1930 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:11,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:11,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:34:11,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:13,031 INFO L124 PetriNetUnfolderBase]: 5057/8301 cut-off events. [2024-06-28 01:34:13,032 INFO L125 PetriNetUnfolderBase]: For 329793/329793 co-relation queries the response was YES. [2024-06-28 01:34:13,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50198 conditions, 8301 events. 5057/8301 cut-off events. For 329793/329793 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 55490 event pairs, 1579 based on Foata normal form. 1/8148 useless extension candidates. Maximal degree in co-relation 50116. Up to 7086 conditions per place. [2024-06-28 01:34:13,118 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 211 selfloop transitions, 16 changer transitions 0/255 dead transitions. [2024-06-28 01:34:13,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 255 transitions, 2512 flow [2024-06-28 01:34:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:34:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:34:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:34:13,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028571428571429 [2024-06-28 01:34:13,119 INFO L175 Difference]: Start difference. First operand has 179 places, 227 transitions, 1930 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:34:13,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 255 transitions, 2512 flow [2024-06-28 01:34:13,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 255 transitions, 2437 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 01:34:13,370 INFO L231 Difference]: Finished difference. Result has 182 places, 230 transitions, 1947 flow [2024-06-28 01:34:13,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1947, PETRI_PLACES=182, PETRI_TRANSITIONS=230} [2024-06-28 01:34:13,370 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 126 predicate places. [2024-06-28 01:34:13,370 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 230 transitions, 1947 flow [2024-06-28 01:34:13,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:13,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:13,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:13,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:34:13,371 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:13,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:13,371 INFO L85 PathProgramCache]: Analyzing trace with hash -662963535, now seen corresponding path program 2 times [2024-06-28 01:34:13,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:13,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525832295] [2024-06-28 01:34:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:13,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:14,181 INFO 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 01:34:14,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:14,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525832295] [2024-06-28 01:34:14,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525832295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:14,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:14,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:14,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007176018] [2024-06-28 01:34:14,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:14,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:14,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:14,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:14,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:14,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:34:14,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 230 transitions, 1947 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:14,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:14,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:34:14,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:15,465 INFO L124 PetriNetUnfolderBase]: 5026/8244 cut-off events. [2024-06-28 01:34:15,465 INFO L125 PetriNetUnfolderBase]: For 347269/347330 co-relation queries the response was YES. [2024-06-28 01:34:15,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51540 conditions, 8244 events. 5026/8244 cut-off events. For 347269/347330 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 54702 event pairs, 1427 based on Foata normal form. 6/8070 useless extension candidates. Maximal degree in co-relation 51457. Up to 7025 conditions per place. [2024-06-28 01:34:15,555 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 219 selfloop transitions, 22 changer transitions 0/258 dead transitions. [2024-06-28 01:34:15,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 258 transitions, 2563 flow [2024-06-28 01:34:15,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:34:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:34:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:34:15,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085714285714286 [2024-06-28 01:34:15,556 INFO L175 Difference]: Start difference. First operand has 182 places, 230 transitions, 1947 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:34:15,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 258 transitions, 2563 flow [2024-06-28 01:34:15,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 258 transitions, 2493 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:15,928 INFO L231 Difference]: Finished difference. Result has 184 places, 233 transitions, 1987 flow [2024-06-28 01:34:15,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1877, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1987, PETRI_PLACES=184, PETRI_TRANSITIONS=233} [2024-06-28 01:34:15,928 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 128 predicate places. [2024-06-28 01:34:15,928 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 233 transitions, 1987 flow [2024-06-28 01:34:15,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:15,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:15,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:15,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:34:15,929 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:15,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:15,929 INFO L85 PathProgramCache]: Analyzing trace with hash -648414672, now seen corresponding path program 2 times [2024-06-28 01:34:15,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:15,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330504378] [2024-06-28 01:34:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:16,791 INFO 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 01:34:16,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:16,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330504378] [2024-06-28 01:34:16,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330504378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:16,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:16,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:16,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630502743] [2024-06-28 01:34:16,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:16,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:16,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:16,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:16,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:16,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:34:16,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 233 transitions, 1987 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:16,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:16,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:34:16,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:18,103 INFO L124 PetriNetUnfolderBase]: 5087/8617 cut-off events. [2024-06-28 01:34:18,104 INFO L125 PetriNetUnfolderBase]: For 358826/358832 co-relation queries the response was YES. [2024-06-28 01:34:18,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52407 conditions, 8617 events. 5087/8617 cut-off events. For 358826/358832 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 59764 event pairs, 1569 based on Foata normal form. 7/8397 useless extension candidates. Maximal degree in co-relation 52323. Up to 7079 conditions per place. [2024-06-28 01:34:18,190 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 207 selfloop transitions, 28 changer transitions 0/264 dead transitions. [2024-06-28 01:34:18,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 264 transitions, 2761 flow [2024-06-28 01:34:18,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:34:18,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:34:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 01:34:18,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114285714285715 [2024-06-28 01:34:18,191 INFO L175 Difference]: Start difference. First operand has 184 places, 233 transitions, 1987 flow. Second operand 7 states and 179 transitions. [2024-06-28 01:34:18,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 264 transitions, 2761 flow [2024-06-28 01:34:18,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 264 transitions, 2673 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:18,562 INFO L231 Difference]: Finished difference. Result has 186 places, 239 transitions, 2079 flow [2024-06-28 01:34:18,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2079, PETRI_PLACES=186, PETRI_TRANSITIONS=239} [2024-06-28 01:34:18,562 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 130 predicate places. [2024-06-28 01:34:18,562 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 239 transitions, 2079 flow [2024-06-28 01:34:18,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:18,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:18,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:18,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:34:18,563 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:18,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:18,563 INFO L85 PathProgramCache]: Analyzing trace with hash -648414951, now seen corresponding path program 3 times [2024-06-28 01:34:18,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:18,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441980770] [2024-06-28 01:34:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:18,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:19,401 INFO 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 01:34:19,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:19,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441980770] [2024-06-28 01:34:19,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441980770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:19,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:19,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:19,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773437795] [2024-06-28 01:34:19,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:19,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:19,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:19,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:19,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:19,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:34:19,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 239 transitions, 2079 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:19,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:19,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:34:19,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:20,645 INFO L124 PetriNetUnfolderBase]: 5050/8394 cut-off events. [2024-06-28 01:34:20,646 INFO L125 PetriNetUnfolderBase]: For 377367/377468 co-relation queries the response was YES. [2024-06-28 01:34:20,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53506 conditions, 8394 events. 5050/8394 cut-off events. For 377367/377468 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 56698 event pairs, 1423 based on Foata normal form. 6/8177 useless extension candidates. Maximal degree in co-relation 53421. Up to 7021 conditions per place. [2024-06-28 01:34:20,739 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 218 selfloop transitions, 29 changer transitions 0/266 dead transitions. [2024-06-28 01:34:20,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 266 transitions, 2723 flow [2024-06-28 01:34:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:34:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:34:20,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:34:20,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085714285714286 [2024-06-28 01:34:20,741 INFO L175 Difference]: Start difference. First operand has 186 places, 239 transitions, 2079 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:34:20,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 266 transitions, 2723 flow [2024-06-28 01:34:21,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 266 transitions, 2643 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 01:34:21,084 INFO L231 Difference]: Finished difference. Result has 190 places, 242 transitions, 2131 flow [2024-06-28 01:34:21,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2131, PETRI_PLACES=190, PETRI_TRANSITIONS=242} [2024-06-28 01:34:21,085 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 134 predicate places. [2024-06-28 01:34:21,085 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 242 transitions, 2131 flow [2024-06-28 01:34:21,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:21,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:21,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:21,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:34:21,086 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:21,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:21,086 INFO L85 PathProgramCache]: Analyzing trace with hash -648088242, now seen corresponding path program 3 times [2024-06-28 01:34:21,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:21,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825985746] [2024-06-28 01:34:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:21,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:21,985 INFO 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 01:34:21,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:21,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825985746] [2024-06-28 01:34:21,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825985746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:21,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:21,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:21,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331239254] [2024-06-28 01:34:21,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:21,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:21,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:21,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:21,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:22,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:34:22,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 242 transitions, 2131 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:22,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:22,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:34:22,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:23,243 INFO L124 PetriNetUnfolderBase]: 5090/8619 cut-off events. [2024-06-28 01:34:23,243 INFO L125 PetriNetUnfolderBase]: For 384188/384194 co-relation queries the response was YES. [2024-06-28 01:34:23,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53893 conditions, 8619 events. 5090/8619 cut-off events. For 384188/384194 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 59732 event pairs, 1567 based on Foata normal form. 7/8399 useless extension candidates. Maximal degree in co-relation 53806. Up to 7078 conditions per place. [2024-06-28 01:34:23,341 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 207 selfloop transitions, 29 changer transitions 0/266 dead transitions. [2024-06-28 01:34:23,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 266 transitions, 2691 flow [2024-06-28 01:34:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:34:23,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:34:23,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:34:23,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057142857142857 [2024-06-28 01:34:23,342 INFO L175 Difference]: Start difference. First operand has 190 places, 242 transitions, 2131 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:34:23,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 266 transitions, 2691 flow [2024-06-28 01:34:23,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 266 transitions, 2545 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:23,691 INFO L231 Difference]: Finished difference. Result has 192 places, 242 transitions, 2049 flow [2024-06-28 01:34:23,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2049, PETRI_PLACES=192, PETRI_TRANSITIONS=242} [2024-06-28 01:34:23,692 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 136 predicate places. [2024-06-28 01:34:23,692 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 242 transitions, 2049 flow [2024-06-28 01:34:23,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:23,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:23,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:23,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:34:23,692 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:23,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash 628456822, now seen corresponding path program 1 times [2024-06-28 01:34:23,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:23,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179528292] [2024-06-28 01:34:23,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:23,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:24,615 INFO 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 01:34:24,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:24,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179528292] [2024-06-28 01:34:24,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179528292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:24,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:24,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:24,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187238514] [2024-06-28 01:34:24,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:24,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:24,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:24,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:24,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:24,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:24,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 242 transitions, 2049 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:24,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:24,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:24,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:26,320 INFO L124 PetriNetUnfolderBase]: 6021/9586 cut-off events. [2024-06-28 01:34:26,320 INFO L125 PetriNetUnfolderBase]: For 507923/508043 co-relation queries the response was YES. [2024-06-28 01:34:26,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63641 conditions, 9586 events. 6021/9586 cut-off events. For 507923/508043 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 62570 event pairs, 1135 based on Foata normal form. 22/9406 useless extension candidates. Maximal degree in co-relation 63553. Up to 6551 conditions per place. [2024-06-28 01:34:26,419 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 212 selfloop transitions, 83 changer transitions 0/313 dead transitions. [2024-06-28 01:34:26,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 313 transitions, 3135 flow [2024-06-28 01:34:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:26,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2024-06-28 01:34:26,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-28 01:34:26,421 INFO L175 Difference]: Start difference. First operand has 192 places, 242 transitions, 2049 flow. Second operand 9 states and 252 transitions. [2024-06-28 01:34:26,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 313 transitions, 3135 flow [2024-06-28 01:34:26,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 313 transitions, 3067 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:26,785 INFO L231 Difference]: Finished difference. Result has 195 places, 244 transitions, 2203 flow [2024-06-28 01:34:26,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2203, PETRI_PLACES=195, PETRI_TRANSITIONS=244} [2024-06-28 01:34:26,786 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 139 predicate places. [2024-06-28 01:34:26,786 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 244 transitions, 2203 flow [2024-06-28 01:34:26,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:26,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:26,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:26,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:34:26,787 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:26,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:26,787 INFO L85 PathProgramCache]: Analyzing trace with hash -916210314, now seen corresponding path program 2 times [2024-06-28 01:34:26,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:26,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14581230] [2024-06-28 01:34:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:26,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:27,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:27,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14581230] [2024-06-28 01:34:27,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14581230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:27,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:27,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:27,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443878805] [2024-06-28 01:34:27,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:27,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:27,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:27,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:27,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:27,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:27,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 244 transitions, 2203 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:27,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:27,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:27,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:29,726 INFO L124 PetriNetUnfolderBase]: 6185/9887 cut-off events. [2024-06-28 01:34:29,727 INFO L125 PetriNetUnfolderBase]: For 536982/537078 co-relation queries the response was YES. [2024-06-28 01:34:29,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66736 conditions, 9887 events. 6185/9887 cut-off events. For 536982/537078 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 65383 event pairs, 1667 based on Foata normal form. 30/9717 useless extension candidates. Maximal degree in co-relation 66647. Up to 7760 conditions per place. [2024-06-28 01:34:29,830 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 208 selfloop transitions, 81 changer transitions 0/307 dead transitions. [2024-06-28 01:34:29,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 307 transitions, 3052 flow [2024-06-28 01:34:29,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:29,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-28 01:34:29,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533333333333333 [2024-06-28 01:34:29,832 INFO L175 Difference]: Start difference. First operand has 195 places, 244 transitions, 2203 flow. Second operand 9 states and 249 transitions. [2024-06-28 01:34:29,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 307 transitions, 3052 flow [2024-06-28 01:34:30,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 307 transitions, 2951 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:30,389 INFO L231 Difference]: Finished difference. Result has 199 places, 246 transitions, 2324 flow [2024-06-28 01:34:30,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2102, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2324, PETRI_PLACES=199, PETRI_TRANSITIONS=246} [2024-06-28 01:34:30,390 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 143 predicate places. [2024-06-28 01:34:30,390 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 246 transitions, 2324 flow [2024-06-28 01:34:30,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:30,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:30,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:30,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:34:30,391 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:30,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:30,391 INFO L85 PathProgramCache]: Analyzing trace with hash -916387944, now seen corresponding path program 3 times [2024-06-28 01:34:30,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:30,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707663191] [2024-06-28 01:34:30,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:30,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:31,379 INFO 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 01:34:31,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:31,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707663191] [2024-06-28 01:34:31,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707663191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:31,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:31,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:31,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805284806] [2024-06-28 01:34:31,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:31,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:31,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:31,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:31,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:31,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:31,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 246 transitions, 2324 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:31,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:31,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:31,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:33,494 INFO L124 PetriNetUnfolderBase]: 6315/10111 cut-off events. [2024-06-28 01:34:33,494 INFO L125 PetriNetUnfolderBase]: For 551889/551985 co-relation queries the response was YES. [2024-06-28 01:34:33,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68996 conditions, 10111 events. 6315/10111 cut-off events. For 551889/551985 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 67197 event pairs, 1673 based on Foata normal form. 22/9931 useless extension candidates. Maximal degree in co-relation 68905. Up to 7756 conditions per place. [2024-06-28 01:34:33,603 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 211 selfloop transitions, 83 changer transitions 0/312 dead transitions. [2024-06-28 01:34:33,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 312 transitions, 3177 flow [2024-06-28 01:34:33,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2024-06-28 01:34:33,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-28 01:34:33,605 INFO L175 Difference]: Start difference. First operand has 199 places, 246 transitions, 2324 flow. Second operand 9 states and 252 transitions. [2024-06-28 01:34:33,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 312 transitions, 3177 flow [2024-06-28 01:34:34,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 312 transitions, 2985 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:34,122 INFO L231 Difference]: Finished difference. Result has 201 places, 247 transitions, 2334 flow [2024-06-28 01:34:34,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2334, PETRI_PLACES=201, PETRI_TRANSITIONS=247} [2024-06-28 01:34:34,122 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 145 predicate places. [2024-06-28 01:34:34,122 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 247 transitions, 2334 flow [2024-06-28 01:34:34,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:34,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:34,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:34,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:34:34,123 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:34,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:34,123 INFO L85 PathProgramCache]: Analyzing trace with hash -920971914, now seen corresponding path program 4 times [2024-06-28 01:34:34,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:34,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202045025] [2024-06-28 01:34:34,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:34,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:35,124 INFO 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 01:34:35,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:35,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202045025] [2024-06-28 01:34:35,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202045025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:35,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:35,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:35,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723408529] [2024-06-28 01:34:35,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:35,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:35,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:35,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:35,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:35,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 247 transitions, 2334 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:35,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:35,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:35,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:36,966 INFO L124 PetriNetUnfolderBase]: 6445/10323 cut-off events. [2024-06-28 01:34:36,966 INFO L125 PetriNetUnfolderBase]: For 569520/569616 co-relation queries the response was YES. [2024-06-28 01:34:37,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70022 conditions, 10323 events. 6445/10323 cut-off events. For 569520/569616 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 68897 event pairs, 1696 based on Foata normal form. 22/10145 useless extension candidates. Maximal degree in co-relation 69930. Up to 7709 conditions per place. [2024-06-28 01:34:37,102 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 212 selfloop transitions, 85 changer transitions 0/315 dead transitions. [2024-06-28 01:34:37,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 315 transitions, 3211 flow [2024-06-28 01:34:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 253 transitions. [2024-06-28 01:34:37,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622222222222222 [2024-06-28 01:34:37,104 INFO L175 Difference]: Start difference. First operand has 201 places, 247 transitions, 2334 flow. Second operand 9 states and 253 transitions. [2024-06-28 01:34:37,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 315 transitions, 3211 flow [2024-06-28 01:34:37,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 315 transitions, 3027 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:37,605 INFO L231 Difference]: Finished difference. Result has 203 places, 248 transitions, 2358 flow [2024-06-28 01:34:37,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2358, PETRI_PLACES=203, PETRI_TRANSITIONS=248} [2024-06-28 01:34:37,605 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 147 predicate places. [2024-06-28 01:34:37,605 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 248 transitions, 2358 flow [2024-06-28 01:34:37,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:37,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:37,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:37,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:34:37,606 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:37,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:37,606 INFO L85 PathProgramCache]: Analyzing trace with hash 745242528, now seen corresponding path program 1 times [2024-06-28 01:34:37,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:37,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555440189] [2024-06-28 01:34:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:37,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:38,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:38,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555440189] [2024-06-28 01:34:38,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555440189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:38,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:38,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:34:38,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842547108] [2024-06-28 01:34:38,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:38,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:34:38,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:38,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:34:38,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:34:38,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:38,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 248 transitions, 2358 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:38,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:38,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:38,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:40,149 INFO L124 PetriNetUnfolderBase]: 6404/10327 cut-off events. [2024-06-28 01:34:40,150 INFO L125 PetriNetUnfolderBase]: For 561450/561464 co-relation queries the response was YES. [2024-06-28 01:34:40,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69285 conditions, 10327 events. 6404/10327 cut-off events. For 561450/561464 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 69928 event pairs, 2054 based on Foata normal form. 16/10132 useless extension candidates. Maximal degree in co-relation 69192. Up to 8978 conditions per place. [2024-06-28 01:34:40,270 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 227 selfloop transitions, 33 changer transitions 0/289 dead transitions. [2024-06-28 01:34:40,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 289 transitions, 3062 flow [2024-06-28 01:34:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:34:40,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-06-28 01:34:40,271 INFO L175 Difference]: Start difference. First operand has 203 places, 248 transitions, 2358 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:34:40,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 289 transitions, 3062 flow [2024-06-28 01:34:40,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 289 transitions, 2872 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:40,744 INFO L231 Difference]: Finished difference. Result has 204 places, 252 transitions, 2323 flow [2024-06-28 01:34:40,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2323, PETRI_PLACES=204, PETRI_TRANSITIONS=252} [2024-06-28 01:34:40,745 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 148 predicate places. [2024-06-28 01:34:40,745 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 252 transitions, 2323 flow [2024-06-28 01:34:40,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:40,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:40,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:40,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:34:40,746 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:40,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:40,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1795307240, now seen corresponding path program 5 times [2024-06-28 01:34:40,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:40,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839912909] [2024-06-28 01:34:40,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:40,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:41,685 INFO 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 01:34:41,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:41,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839912909] [2024-06-28 01:34:41,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839912909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:41,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:41,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:41,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507664157] [2024-06-28 01:34:41,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:41,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:41,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:41,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:41,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:41,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:41,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 252 transitions, 2323 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:41,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:41,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:41,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:43,814 INFO L124 PetriNetUnfolderBase]: 6747/10806 cut-off events. [2024-06-28 01:34:43,815 INFO L125 PetriNetUnfolderBase]: For 623309/623425 co-relation queries the response was YES. [2024-06-28 01:34:43,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73810 conditions, 10806 events. 6747/10806 cut-off events. For 623309/623425 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 72766 event pairs, 1420 based on Foata normal form. 22/10626 useless extension candidates. Maximal degree in co-relation 73716. Up to 8001 conditions per place. [2024-06-28 01:34:43,953 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 213 selfloop transitions, 93 changer transitions 0/325 dead transitions. [2024-06-28 01:34:43,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 325 transitions, 3455 flow [2024-06-28 01:34:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 258 transitions. [2024-06-28 01:34:43,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2024-06-28 01:34:43,954 INFO L175 Difference]: Start difference. First operand has 204 places, 252 transitions, 2323 flow. Second operand 9 states and 258 transitions. [2024-06-28 01:34:43,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 325 transitions, 3455 flow [2024-06-28 01:34:44,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 325 transitions, 3328 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:44,488 INFO L231 Difference]: Finished difference. Result has 207 places, 254 transitions, 2454 flow [2024-06-28 01:34:44,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2454, PETRI_PLACES=207, PETRI_TRANSITIONS=254} [2024-06-28 01:34:44,489 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 151 predicate places. [2024-06-28 01:34:44,489 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 254 transitions, 2454 flow [2024-06-28 01:34:44,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:44,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:44,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:44,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:34:44,490 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:44,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:44,491 INFO L85 PathProgramCache]: Analyzing trace with hash 391074016, now seen corresponding path program 6 times [2024-06-28 01:34:44,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:44,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372165777] [2024-06-28 01:34:44,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:44,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:45,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:45,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372165777] [2024-06-28 01:34:45,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372165777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:45,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:45,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:45,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786180309] [2024-06-28 01:34:45,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:45,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:45,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:45,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:45,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:45,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:45,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 254 transitions, 2454 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:45,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:45,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:45,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:47,754 INFO L124 PetriNetUnfolderBase]: 6914/11140 cut-off events. [2024-06-28 01:34:47,754 INFO L125 PetriNetUnfolderBase]: For 656225/656329 co-relation queries the response was YES. [2024-06-28 01:34:47,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76526 conditions, 11140 events. 6914/11140 cut-off events. For 656225/656329 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 76009 event pairs, 1894 based on Foata normal form. 26/10936 useless extension candidates. Maximal degree in co-relation 76431. Up to 8890 conditions per place. [2024-06-28 01:34:47,880 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 217 selfloop transitions, 81 changer transitions 0/317 dead transitions. [2024-06-28 01:34:47,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 317 transitions, 3320 flow [2024-06-28 01:34:47,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:47,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-06-28 01:34:47,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5511111111111111 [2024-06-28 01:34:47,881 INFO L175 Difference]: Start difference. First operand has 207 places, 254 transitions, 2454 flow. Second operand 9 states and 248 transitions. [2024-06-28 01:34:47,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 317 transitions, 3320 flow [2024-06-28 01:34:48,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 317 transitions, 3186 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:48,463 INFO L231 Difference]: Finished difference. Result has 211 places, 255 transitions, 2525 flow [2024-06-28 01:34:48,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2525, PETRI_PLACES=211, PETRI_TRANSITIONS=255} [2024-06-28 01:34:48,464 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 155 predicate places. [2024-06-28 01:34:48,464 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 255 transitions, 2525 flow [2024-06-28 01:34:48,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:48,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:48,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:48,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:34:48,464 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:48,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:48,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1624311860, now seen corresponding path program 7 times [2024-06-28 01:34:48,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:48,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991351376] [2024-06-28 01:34:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:48,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:49,422 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 01:34:49,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:49,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991351376] [2024-06-28 01:34:49,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991351376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:49,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:49,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:49,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527884066] [2024-06-28 01:34:49,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:49,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:49,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:49,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:49,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:49,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 255 transitions, 2525 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:49,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:49,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:49,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:51,882 INFO L124 PetriNetUnfolderBase]: 7081/11454 cut-off events. [2024-06-28 01:34:51,882 INFO L125 PetriNetUnfolderBase]: For 679087/679191 co-relation queries the response was YES. [2024-06-28 01:34:51,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78765 conditions, 11454 events. 7081/11454 cut-off events. For 679087/679191 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 78875 event pairs, 1961 based on Foata normal form. 26/11240 useless extension candidates. Maximal degree in co-relation 78668. Up to 9147 conditions per place. [2024-06-28 01:34:51,998 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 220 selfloop transitions, 80 changer transitions 0/319 dead transitions. [2024-06-28 01:34:51,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 319 transitions, 3401 flow [2024-06-28 01:34:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-06-28 01:34:52,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 01:34:52,000 INFO L175 Difference]: Start difference. First operand has 211 places, 255 transitions, 2525 flow. Second operand 9 states and 250 transitions. [2024-06-28 01:34:52,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 319 transitions, 3401 flow [2024-06-28 01:34:52,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 319 transitions, 3222 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:52,425 INFO L231 Difference]: Finished difference. Result has 213 places, 256 transitions, 2551 flow [2024-06-28 01:34:52,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2551, PETRI_PLACES=213, PETRI_TRANSITIONS=256} [2024-06-28 01:34:52,426 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 157 predicate places. [2024-06-28 01:34:52,426 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 256 transitions, 2551 flow [2024-06-28 01:34:52,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:52,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:52,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:52,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:34:52,427 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:52,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1624489490, now seen corresponding path program 8 times [2024-06-28 01:34:52,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:52,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609191534] [2024-06-28 01:34:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:52,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:53,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:53,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609191534] [2024-06-28 01:34:53,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609191534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:53,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:53,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:53,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102860699] [2024-06-28 01:34:53,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:53,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:53,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:53,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:53,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:53,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:53,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 256 transitions, 2551 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:53,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:53,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:53,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:55,533 INFO L124 PetriNetUnfolderBase]: 7211/11617 cut-off events. [2024-06-28 01:34:55,533 INFO L125 PetriNetUnfolderBase]: For 693744/693848 co-relation queries the response was YES. [2024-06-28 01:34:55,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79941 conditions, 11617 events. 7211/11617 cut-off events. For 693744/693848 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 79865 event pairs, 1921 based on Foata normal form. 22/11409 useless extension candidates. Maximal degree in co-relation 79843. Up to 8919 conditions per place. [2024-06-28 01:34:55,684 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 221 selfloop transitions, 83 changer transitions 0/323 dead transitions. [2024-06-28 01:34:55,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 323 transitions, 3447 flow [2024-06-28 01:34:55,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:55,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2024-06-28 01:34:55,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-28 01:34:55,686 INFO L175 Difference]: Start difference. First operand has 213 places, 256 transitions, 2551 flow. Second operand 9 states and 252 transitions. [2024-06-28 01:34:55,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 323 transitions, 3447 flow [2024-06-28 01:34:56,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 323 transitions, 3268 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:56,552 INFO L231 Difference]: Finished difference. Result has 215 places, 257 transitions, 2584 flow [2024-06-28 01:34:56,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2584, PETRI_PLACES=215, PETRI_TRANSITIONS=257} [2024-06-28 01:34:56,552 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 159 predicate places. [2024-06-28 01:34:56,553 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 257 transitions, 2584 flow [2024-06-28 01:34:56,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:56,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:56,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:56,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:34:56,553 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:56,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1795187270, now seen corresponding path program 9 times [2024-06-28 01:34:56,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:56,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091777151] [2024-06-28 01:34:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:56,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:57,509 INFO 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 01:34:57,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:57,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091777151] [2024-06-28 01:34:57,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091777151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:57,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:57,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:57,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775452135] [2024-06-28 01:34:57,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:57,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:57,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:57,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:57,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:57,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:34:57,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 257 transitions, 2584 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:57,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:57,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:34:57,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:00,055 INFO L124 PetriNetUnfolderBase]: 7378/11964 cut-off events. [2024-06-28 01:35:00,056 INFO L125 PetriNetUnfolderBase]: For 724172/724276 co-relation queries the response was YES. [2024-06-28 01:35:00,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81831 conditions, 11964 events. 7378/11964 cut-off events. For 724172/724276 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 83351 event pairs, 2014 based on Foata normal form. 26/11744 useless extension candidates. Maximal degree in co-relation 81732. Up to 9606 conditions per place. [2024-06-28 01:35:00,187 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 217 selfloop transitions, 87 changer transitions 0/323 dead transitions. [2024-06-28 01:35:00,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 323 transitions, 3476 flow [2024-06-28 01:35:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:00,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2024-06-28 01:35:00,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-28 01:35:00,189 INFO L175 Difference]: Start difference. First operand has 215 places, 257 transitions, 2584 flow. Second operand 9 states and 252 transitions. [2024-06-28 01:35:00,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 323 transitions, 3476 flow [2024-06-28 01:35:00,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 323 transitions, 3284 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:00,752 INFO L231 Difference]: Finished difference. Result has 217 places, 258 transitions, 2615 flow [2024-06-28 01:35:00,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2615, PETRI_PLACES=217, PETRI_TRANSITIONS=258} [2024-06-28 01:35:00,753 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 161 predicate places. [2024-06-28 01:35:00,753 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 258 transitions, 2615 flow [2024-06-28 01:35:00,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:00,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:00,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:00,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:35:00,753 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:00,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash 218406496, now seen corresponding path program 10 times [2024-06-28 01:35:00,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:00,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302968044] [2024-06-28 01:35:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:00,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:01,811 INFO 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 01:35:01,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302968044] [2024-06-28 01:35:01,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302968044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:01,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:01,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:01,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240143012] [2024-06-28 01:35:01,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:01,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:01,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:01,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:01,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:01,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:35:01,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 258 transitions, 2615 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:01,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:01,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:35:01,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:04,094 INFO L124 PetriNetUnfolderBase]: 7508/12147 cut-off events. [2024-06-28 01:35:04,094 INFO L125 PetriNetUnfolderBase]: For 739208/739312 co-relation queries the response was YES. [2024-06-28 01:35:04,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82988 conditions, 12147 events. 7508/12147 cut-off events. For 739208/739312 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 84541 event pairs, 1989 based on Foata normal form. 22/11929 useless extension candidates. Maximal degree in co-relation 82888. Up to 9602 conditions per place. [2024-06-28 01:35:04,244 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 220 selfloop transitions, 89 changer transitions 0/328 dead transitions. [2024-06-28 01:35:04,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 328 transitions, 3533 flow [2024-06-28 01:35:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:04,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:04,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 256 transitions. [2024-06-28 01:35:04,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688888888888889 [2024-06-28 01:35:04,245 INFO L175 Difference]: Start difference. First operand has 217 places, 258 transitions, 2615 flow. Second operand 9 states and 256 transitions. [2024-06-28 01:35:04,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 328 transitions, 3533 flow [2024-06-28 01:35:05,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 328 transitions, 3336 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:05,008 INFO L231 Difference]: Finished difference. Result has 219 places, 259 transitions, 2646 flow [2024-06-28 01:35:05,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2646, PETRI_PLACES=219, PETRI_TRANSITIONS=259} [2024-06-28 01:35:05,009 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 163 predicate places. [2024-06-28 01:35:05,009 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 259 transitions, 2646 flow [2024-06-28 01:35:05,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:05,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:05,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:05,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:35:05,010 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:05,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:05,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1893766388, now seen corresponding path program 1 times [2024-06-28 01:35:05,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:05,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47836692] [2024-06-28 01:35:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:05,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:05,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:05,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47836692] [2024-06-28 01:35:05,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47836692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:05,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:05,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:35:05,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627608326] [2024-06-28 01:35:05,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:05,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:35:05,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:05,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:35:05,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:35:05,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:35:05,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 259 transitions, 2646 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:05,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:05,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:35:05,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:07,821 INFO L124 PetriNetUnfolderBase]: 7160/11760 cut-off events. [2024-06-28 01:35:07,821 INFO L125 PetriNetUnfolderBase]: For 728900/729006 co-relation queries the response was YES. [2024-06-28 01:35:07,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80643 conditions, 11760 events. 7160/11760 cut-off events. For 728900/729006 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 83568 event pairs, 2247 based on Foata normal form. 28/11486 useless extension candidates. Maximal degree in co-relation 80542. Up to 10050 conditions per place. [2024-06-28 01:35:07,958 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 226 selfloop transitions, 29 changer transitions 0/293 dead transitions. [2024-06-28 01:35:07,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 293 transitions, 3298 flow [2024-06-28 01:35:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:07,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 01:35:07,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-06-28 01:35:07,959 INFO L175 Difference]: Start difference. First operand has 219 places, 259 transitions, 2646 flow. Second operand 7 states and 186 transitions. [2024-06-28 01:35:07,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 293 transitions, 3298 flow [2024-06-28 01:35:08,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 293 transitions, 3090 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:08,791 INFO L231 Difference]: Finished difference. Result has 219 places, 264 transitions, 2573 flow [2024-06-28 01:35:08,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2438, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2573, PETRI_PLACES=219, PETRI_TRANSITIONS=264} [2024-06-28 01:35:08,792 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 163 predicate places. [2024-06-28 01:35:08,792 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 264 transitions, 2573 flow [2024-06-28 01:35:08,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:08,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:08,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:08,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:35:08,793 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:08,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1412041194, now seen corresponding path program 2 times [2024-06-28 01:35:08,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:08,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350951119] [2024-06-28 01:35:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:08,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:09,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:09,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350951119] [2024-06-28 01:35:09,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350951119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:09,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:09,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:35:09,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272915037] [2024-06-28 01:35:09,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:09,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:35:09,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:09,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:35:09,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:35:09,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:35:09,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 264 transitions, 2573 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:09,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:09,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:35:09,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:11,566 INFO L124 PetriNetUnfolderBase]: 7174/11775 cut-off events. [2024-06-28 01:35:11,566 INFO L125 PetriNetUnfolderBase]: For 732605/732711 co-relation queries the response was YES. [2024-06-28 01:35:11,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79639 conditions, 11775 events. 7174/11775 cut-off events. For 732605/732711 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 83671 event pairs, 2239 based on Foata normal form. 28/11502 useless extension candidates. Maximal degree in co-relation 79537. Up to 9969 conditions per place. [2024-06-28 01:35:11,726 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 217 selfloop transitions, 41 changer transitions 0/296 dead transitions. [2024-06-28 01:35:11,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 296 transitions, 3365 flow [2024-06-28 01:35:11,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:11,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 01:35:11,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-06-28 01:35:11,728 INFO L175 Difference]: Start difference. First operand has 219 places, 264 transitions, 2573 flow. Second operand 7 states and 186 transitions. [2024-06-28 01:35:11,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 296 transitions, 3365 flow [2024-06-28 01:35:12,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 296 transitions, 3297 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:35:12,582 INFO L231 Difference]: Finished difference. Result has 223 places, 267 transitions, 2652 flow [2024-06-28 01:35:12,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2505, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2652, PETRI_PLACES=223, PETRI_TRANSITIONS=267} [2024-06-28 01:35:12,583 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 167 predicate places. [2024-06-28 01:35:12,583 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 267 transitions, 2652 flow [2024-06-28 01:35:12,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:12,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:12,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:12,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:35:12,583 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:12,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:12,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1412037660, now seen corresponding path program 2 times [2024-06-28 01:35:12,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:12,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848037667] [2024-06-28 01:35:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:12,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848037667] [2024-06-28 01:35:13,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848037667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:13,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:13,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:35:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519353586] [2024-06-28 01:35:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:13,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:35:13,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:13,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:35:13,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:35:13,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:35:13,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 267 transitions, 2652 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:13,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:13,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:35:13,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:15,563 INFO L124 PetriNetUnfolderBase]: 7536/12270 cut-off events. [2024-06-28 01:35:15,563 INFO L125 PetriNetUnfolderBase]: For 758162/758184 co-relation queries the response was YES. [2024-06-28 01:35:15,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82395 conditions, 12270 events. 7536/12270 cut-off events. For 758162/758184 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 86637 event pairs, 2410 based on Foata normal form. 24/12004 useless extension candidates. Maximal degree in co-relation 82292. Up to 10467 conditions per place. [2024-06-28 01:35:15,711 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 231 selfloop transitions, 54 changer transitions 0/314 dead transitions. [2024-06-28 01:35:15,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 314 transitions, 3842 flow [2024-06-28 01:35:15,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:35:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:35:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:35:15,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-06-28 01:35:15,712 INFO L175 Difference]: Start difference. First operand has 223 places, 267 transitions, 2652 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:35:15,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 314 transitions, 3842 flow [2024-06-28 01:35:16,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 314 transitions, 3745 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 01:35:16,389 INFO L231 Difference]: Finished difference. Result has 228 places, 279 transitions, 2945 flow [2024-06-28 01:35:16,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2555, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2945, PETRI_PLACES=228, PETRI_TRANSITIONS=279} [2024-06-28 01:35:16,389 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 172 predicate places. [2024-06-28 01:35:16,389 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 279 transitions, 2945 flow [2024-06-28 01:35:16,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:16,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:16,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:16,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:35:16,390 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:16,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:16,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1412051610, now seen corresponding path program 3 times [2024-06-28 01:35:16,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:16,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325632185] [2024-06-28 01:35:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:17,394 INFO 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 01:35:17,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:17,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325632185] [2024-06-28 01:35:17,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325632185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:17,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:17,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:35:17,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821445761] [2024-06-28 01:35:17,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:17,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:35:17,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:17,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:35:17,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:35:17,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:35:17,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 279 transitions, 2945 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:17,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:17,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:35:17,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:19,623 INFO L124 PetriNetUnfolderBase]: 7532/12250 cut-off events. [2024-06-28 01:35:19,623 INFO L125 PetriNetUnfolderBase]: For 784255/784277 co-relation queries the response was YES. [2024-06-28 01:35:19,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84162 conditions, 12250 events. 7532/12250 cut-off events. For 784255/784277 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 86292 event pairs, 2404 based on Foata normal form. 24/11987 useless extension candidates. Maximal degree in co-relation 84057. Up to 10465 conditions per place. [2024-06-28 01:35:19,756 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 232 selfloop transitions, 53 changer transitions 0/314 dead transitions. [2024-06-28 01:35:19,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 314 transitions, 3901 flow [2024-06-28 01:35:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:35:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:35:19,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:35:19,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:35:19,758 INFO L175 Difference]: Start difference. First operand has 228 places, 279 transitions, 2945 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:35:19,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 314 transitions, 3901 flow [2024-06-28 01:35:20,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 314 transitions, 3714 flow, removed 81 selfloop flow, removed 3 redundant places. [2024-06-28 01:35:20,554 INFO L231 Difference]: Finished difference. Result has 233 places, 279 transitions, 2872 flow [2024-06-28 01:35:20,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2872, PETRI_PLACES=233, PETRI_TRANSITIONS=279} [2024-06-28 01:35:20,554 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 177 predicate places. [2024-06-28 01:35:20,554 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 279 transitions, 2872 flow [2024-06-28 01:35:20,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:20,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:20,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:20,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:35:20,555 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:20,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:20,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1412052106, now seen corresponding path program 1 times [2024-06-28 01:35:20,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784382482] [2024-06-28 01:35:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:21,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:21,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784382482] [2024-06-28 01:35:21,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784382482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:21,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:21,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:35:21,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890809298] [2024-06-28 01:35:21,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:21,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:35:21,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:21,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:35:21,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:35:21,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:35:21,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 279 transitions, 2872 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:21,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:21,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:35:21,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:23,571 INFO L124 PetriNetUnfolderBase]: 7559/12290 cut-off events. [2024-06-28 01:35:23,571 INFO L125 PetriNetUnfolderBase]: For 790146/790162 co-relation queries the response was YES. [2024-06-28 01:35:23,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84087 conditions, 12290 events. 7559/12290 cut-off events. For 790146/790162 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 86379 event pairs, 2414 based on Foata normal form. 17/12017 useless extension candidates. Maximal degree in co-relation 83980. Up to 10812 conditions per place. [2024-06-28 01:35:23,739 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 267 selfloop transitions, 19 changer transitions 0/315 dead transitions. [2024-06-28 01:35:23,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 315 transitions, 3614 flow [2024-06-28 01:35:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:35:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:35:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:35:23,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-28 01:35:23,740 INFO L175 Difference]: Start difference. First operand has 233 places, 279 transitions, 2872 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:35:23,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 315 transitions, 3614 flow [2024-06-28 01:35:24,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 315 transitions, 3486 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:24,684 INFO L231 Difference]: Finished difference. Result has 234 places, 282 transitions, 2854 flow [2024-06-28 01:35:24,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2854, PETRI_PLACES=234, PETRI_TRANSITIONS=282} [2024-06-28 01:35:24,684 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 178 predicate places. [2024-06-28 01:35:24,685 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 282 transitions, 2854 flow [2024-06-28 01:35:24,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:24,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:24,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:24,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:35:24,685 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:24,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:24,686 INFO L85 PathProgramCache]: Analyzing trace with hash 967018292, now seen corresponding path program 11 times [2024-06-28 01:35:24,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:24,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925065260] [2024-06-28 01:35:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:24,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:25,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:25,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925065260] [2024-06-28 01:35:25,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925065260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:25,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:25,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:25,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566876947] [2024-06-28 01:35:25,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:25,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:25,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:25,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:25,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:25,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:35:25,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 282 transitions, 2854 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:25,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:25,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:35:25,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:28,213 INFO L124 PetriNetUnfolderBase]: 7835/12733 cut-off events. [2024-06-28 01:35:28,213 INFO L125 PetriNetUnfolderBase]: For 864092/864206 co-relation queries the response was YES. [2024-06-28 01:35:28,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88240 conditions, 12733 events. 7835/12733 cut-off events. For 864092/864206 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 89754 event pairs, 2130 based on Foata normal form. 40/12510 useless extension candidates. Maximal degree in co-relation 88133. Up to 10250 conditions per place. [2024-06-28 01:35:28,376 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 239 selfloop transitions, 80 changer transitions 0/341 dead transitions. [2024-06-28 01:35:28,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 341 transitions, 3752 flow [2024-06-28 01:35:28,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:28,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-28 01:35:28,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377777777777778 [2024-06-28 01:35:28,377 INFO L175 Difference]: Start difference. First operand has 234 places, 282 transitions, 2854 flow. Second operand 9 states and 242 transitions. [2024-06-28 01:35:28,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 341 transitions, 3752 flow [2024-06-28 01:35:29,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 341 transitions, 3664 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:35:29,337 INFO L231 Difference]: Finished difference. Result has 237 places, 283 transitions, 2979 flow [2024-06-28 01:35:29,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2766, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2979, PETRI_PLACES=237, PETRI_TRANSITIONS=283} [2024-06-28 01:35:29,338 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 181 predicate places. [2024-06-28 01:35:29,338 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 283 transitions, 2979 flow [2024-06-28 01:35:29,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:29,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:29,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:29,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:35:29,338 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:29,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:29,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1600690186, now seen corresponding path program 12 times [2024-06-28 01:35:29,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:29,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881638862] [2024-06-28 01:35:29,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:29,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:30,287 INFO 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 01:35:30,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:30,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881638862] [2024-06-28 01:35:30,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881638862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:30,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:30,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:30,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945190705] [2024-06-28 01:35:30,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:30,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:30,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:30,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:30,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:30,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:35:30,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 283 transitions, 2979 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:30,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:30,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:35:30,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:33,009 INFO L124 PetriNetUnfolderBase]: 8002/12998 cut-off events. [2024-06-28 01:35:33,009 INFO L125 PetriNetUnfolderBase]: For 901776/901890 co-relation queries the response was YES. [2024-06-28 01:35:33,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91262 conditions, 12998 events. 8002/12998 cut-off events. For 901776/901890 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 91916 event pairs, 2164 based on Foata normal form. 40/12775 useless extension candidates. Maximal degree in co-relation 91154. Up to 10507 conditions per place. [2024-06-28 01:35:33,158 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 245 selfloop transitions, 76 changer transitions 0/343 dead transitions. [2024-06-28 01:35:33,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 343 transitions, 3887 flow [2024-06-28 01:35:33,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:33,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-28 01:35:33,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-28 01:35:33,159 INFO L175 Difference]: Start difference. First operand has 237 places, 283 transitions, 2979 flow. Second operand 9 states and 245 transitions. [2024-06-28 01:35:33,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 343 transitions, 3887 flow [2024-06-28 01:35:34,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 343 transitions, 3700 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:34,332 INFO L231 Difference]: Finished difference. Result has 239 places, 284 transitions, 2999 flow [2024-06-28 01:35:34,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2792, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2999, PETRI_PLACES=239, PETRI_TRANSITIONS=284} [2024-06-28 01:35:34,332 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 183 predicate places. [2024-06-28 01:35:34,332 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 284 transitions, 2999 flow [2024-06-28 01:35:34,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:34,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:34,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:34,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:35:34,333 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:34,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1607119276, now seen corresponding path program 13 times [2024-06-28 01:35:34,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:34,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718876838] [2024-06-28 01:35:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:34,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:35,281 INFO 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 01:35:35,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:35,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718876838] [2024-06-28 01:35:35,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718876838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:35,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:35,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:35,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282875664] [2024-06-28 01:35:35,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:35,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:35,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:35,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:35,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:35,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:35:35,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 284 transitions, 2999 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:35,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:35,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:35:35,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:37,939 INFO L124 PetriNetUnfolderBase]: 8124/13238 cut-off events. [2024-06-28 01:35:37,939 INFO L125 PetriNetUnfolderBase]: For 918055/918169 co-relation queries the response was YES. [2024-06-28 01:35:38,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92105 conditions, 13238 events. 8124/13238 cut-off events. For 918055/918169 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 94233 event pairs, 2211 based on Foata normal form. 40/13006 useless extension candidates. Maximal degree in co-relation 91996. Up to 10697 conditions per place. [2024-06-28 01:35:38,108 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 245 selfloop transitions, 77 changer transitions 0/344 dead transitions. [2024-06-28 01:35:38,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 344 transitions, 3911 flow [2024-06-28 01:35:38,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-28 01:35:38,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422222222222223 [2024-06-28 01:35:38,109 INFO L175 Difference]: Start difference. First operand has 239 places, 284 transitions, 2999 flow. Second operand 9 states and 244 transitions. [2024-06-28 01:35:38,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 344 transitions, 3911 flow [2024-06-28 01:35:39,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 344 transitions, 3730 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:39,424 INFO L231 Difference]: Finished difference. Result has 241 places, 285 transitions, 3029 flow [2024-06-28 01:35:39,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2818, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3029, PETRI_PLACES=241, PETRI_TRANSITIONS=285} [2024-06-28 01:35:39,424 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 185 predicate places. [2024-06-28 01:35:39,424 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 285 transitions, 3029 flow [2024-06-28 01:35:39,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:39,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:39,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:39,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:35:39,425 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:39,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1607123926, now seen corresponding path program 14 times [2024-06-28 01:35:39,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:39,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478561800] [2024-06-28 01:35:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:39,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:40,359 INFO 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 01:35:40,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:40,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478561800] [2024-06-28 01:35:40,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478561800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:40,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:40,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:40,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580871989] [2024-06-28 01:35:40,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:40,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:40,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:40,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:40,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:40,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:35:40,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 285 transitions, 3029 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:40,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:40,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:35:40,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:42,967 INFO L124 PetriNetUnfolderBase]: 8096/13110 cut-off events. [2024-06-28 01:35:42,967 INFO L125 PetriNetUnfolderBase]: For 888453/888567 co-relation queries the response was YES. [2024-06-28 01:35:43,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90249 conditions, 13110 events. 8096/13110 cut-off events. For 888453/888567 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 92393 event pairs, 2109 based on Foata normal form. 36/12896 useless extension candidates. Maximal degree in co-relation 90139. Up to 9999 conditions per place. [2024-06-28 01:35:43,121 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 244 selfloop transitions, 81 changer transitions 0/347 dead transitions. [2024-06-28 01:35:43,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 347 transitions, 3909 flow [2024-06-28 01:35:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:43,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:43,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-28 01:35:43,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-06-28 01:35:43,122 INFO L175 Difference]: Start difference. First operand has 241 places, 285 transitions, 3029 flow. Second operand 9 states and 246 transitions. [2024-06-28 01:35:43,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 347 transitions, 3909 flow [2024-06-28 01:35:44,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 347 transitions, 3710 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:44,539 INFO L231 Difference]: Finished difference. Result has 243 places, 285 transitions, 2998 flow [2024-06-28 01:35:44,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2830, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2998, PETRI_PLACES=243, PETRI_TRANSITIONS=285} [2024-06-28 01:35:44,539 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 187 predicate places. [2024-06-28 01:35:44,540 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 285 transitions, 2998 flow [2024-06-28 01:35:44,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:44,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:44,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:44,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:35:44,540 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:44,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:44,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1086101842, now seen corresponding path program 3 times [2024-06-28 01:35:44,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:44,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259076179] [2024-06-28 01:35:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:44,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:45,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:45,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259076179] [2024-06-28 01:35:45,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259076179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:45,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:45,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:35:45,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339411136] [2024-06-28 01:35:45,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:45,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:35:45,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:45,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:35:45,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:35:45,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:35:45,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 285 transitions, 2998 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:45,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:45,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:35:45,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:47,577 INFO L124 PetriNetUnfolderBase]: 7707/12676 cut-off events. [2024-06-28 01:35:47,577 INFO L125 PetriNetUnfolderBase]: For 855209/855325 co-relation queries the response was YES. [2024-06-28 01:35:47,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86935 conditions, 12676 events. 7707/12676 cut-off events. For 855209/855325 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 91303 event pairs, 2409 based on Foata normal form. 23/12356 useless extension candidates. Maximal degree in co-relation 86824. Up to 10830 conditions per place. [2024-06-28 01:35:47,730 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 241 selfloop transitions, 29 changer transitions 0/311 dead transitions. [2024-06-28 01:35:47,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 311 transitions, 3610 flow [2024-06-28 01:35:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:47,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:35:47,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228571428571429 [2024-06-28 01:35:47,731 INFO L175 Difference]: Start difference. First operand has 243 places, 285 transitions, 2998 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:35:47,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 311 transitions, 3610 flow [2024-06-28 01:35:48,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 311 transitions, 3368 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:48,764 INFO L231 Difference]: Finished difference. Result has 242 places, 285 transitions, 2820 flow [2024-06-28 01:35:48,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2756, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2820, PETRI_PLACES=242, PETRI_TRANSITIONS=285} [2024-06-28 01:35:48,765 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 186 predicate places. [2024-06-28 01:35:48,765 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 285 transitions, 2820 flow [2024-06-28 01:35:48,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:48,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:48,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:48,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:35:48,766 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:48,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:48,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1681102358, now seen corresponding path program 4 times [2024-06-28 01:35:48,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:48,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314917550] [2024-06-28 01:35:48,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:48,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:49,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:49,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314917550] [2024-06-28 01:35:49,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314917550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:49,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:49,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:35:49,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144646209] [2024-06-28 01:35:49,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:49,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:35:49,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:49,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:35:49,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:35:49,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:35:49,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 285 transitions, 2820 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:49,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:49,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:35:49,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:51,963 INFO L124 PetriNetUnfolderBase]: 7724/12699 cut-off events. [2024-06-28 01:35:51,963 INFO L125 PetriNetUnfolderBase]: For 861356/861472 co-relation queries the response was YES. [2024-06-28 01:35:52,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85753 conditions, 12699 events. 7724/12699 cut-off events. For 861356/861472 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 91383 event pairs, 2395 based on Foata normal form. 23/12379 useless extension candidates. Maximal degree in co-relation 85641. Up to 10815 conditions per place. [2024-06-28 01:35:52,129 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 234 selfloop transitions, 38 changer transitions 0/313 dead transitions. [2024-06-28 01:35:52,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 313 transitions, 3494 flow [2024-06-28 01:35:52,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:52,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:35:52,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228571428571429 [2024-06-28 01:35:52,130 INFO L175 Difference]: Start difference. First operand has 242 places, 285 transitions, 2820 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:35:52,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 313 transitions, 3494 flow [2024-06-28 01:35:53,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 313 transitions, 3357 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:53,071 INFO L231 Difference]: Finished difference. Result has 241 places, 288 transitions, 2821 flow [2024-06-28 01:35:53,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2683, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2821, PETRI_PLACES=241, PETRI_TRANSITIONS=288} [2024-06-28 01:35:53,071 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 185 predicate places. [2024-06-28 01:35:53,071 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 288 transitions, 2821 flow [2024-06-28 01:35:53,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:53,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:53,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:53,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:35:53,072 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:53,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1373965866, now seen corresponding path program 5 times [2024-06-28 01:35:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:53,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028831839] [2024-06-28 01:35:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:53,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:53,925 INFO 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 01:35:53,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:53,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028831839] [2024-06-28 01:35:53,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028831839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:53,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:53,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:35:53,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343664646] [2024-06-28 01:35:53,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:53,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:35:53,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:53,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:35:53,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:35:54,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:35:54,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 288 transitions, 2821 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:54,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:54,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:35:54,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:56,048 INFO L124 PetriNetUnfolderBase]: 7763/13048 cut-off events. [2024-06-28 01:35:56,048 INFO L125 PetriNetUnfolderBase]: For 881897/882058 co-relation queries the response was YES. [2024-06-28 01:35:56,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86544 conditions, 13048 events. 7763/13048 cut-off events. For 881897/882058 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 96605 event pairs, 2376 based on Foata normal form. 22/12641 useless extension candidates. Maximal degree in co-relation 86431. Up to 10666 conditions per place. [2024-06-28 01:35:56,209 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 214 selfloop transitions, 61 changer transitions 0/316 dead transitions. [2024-06-28 01:35:56,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 316 transitions, 3669 flow [2024-06-28 01:35:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:56,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:35:56,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228571428571429 [2024-06-28 01:35:56,210 INFO L175 Difference]: Start difference. First operand has 241 places, 288 transitions, 2821 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:35:56,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 316 transitions, 3669 flow [2024-06-28 01:35:57,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 316 transitions, 3563 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:57,575 INFO L231 Difference]: Finished difference. Result has 243 places, 291 transitions, 2899 flow [2024-06-28 01:35:57,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2715, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2899, PETRI_PLACES=243, PETRI_TRANSITIONS=291} [2024-06-28 01:35:57,576 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 187 predicate places. [2024-06-28 01:35:57,576 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 291 transitions, 2899 flow [2024-06-28 01:35:57,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:57,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:57,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:57,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:35:57,577 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:57,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1938010724, now seen corresponding path program 6 times [2024-06-28 01:35:57,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:57,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190155268] [2024-06-28 01:35:57,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:57,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:58,416 INFO 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 01:35:58,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:58,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190155268] [2024-06-28 01:35:58,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190155268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:58,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:58,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:35:58,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907012546] [2024-06-28 01:35:58,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:58,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:35:58,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:58,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:35:58,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:35:58,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:35:58,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 291 transitions, 2899 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:58,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:58,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:35:58,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:00,649 INFO L124 PetriNetUnfolderBase]: 7755/13036 cut-off events. [2024-06-28 01:36:00,650 INFO L125 PetriNetUnfolderBase]: For 897733/897894 co-relation queries the response was YES. [2024-06-28 01:36:00,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86685 conditions, 13036 events. 7755/13036 cut-off events. For 897733/897894 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 96465 event pairs, 2374 based on Foata normal form. 23/12630 useless extension candidates. Maximal degree in co-relation 86571. Up to 10658 conditions per place. [2024-06-28 01:36:00,812 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 217 selfloop transitions, 57 changer transitions 0/315 dead transitions. [2024-06-28 01:36:00,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 315 transitions, 3535 flow [2024-06-28 01:36:00,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:00,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:00,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:36:00,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228571428571429 [2024-06-28 01:36:00,813 INFO L175 Difference]: Start difference. First operand has 243 places, 291 transitions, 2899 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:36:00,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 315 transitions, 3535 flow [2024-06-28 01:36:01,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 315 transitions, 3352 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 01:36:01,848 INFO L231 Difference]: Finished difference. Result has 246 places, 291 transitions, 2838 flow [2024-06-28 01:36:01,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2838, PETRI_PLACES=246, PETRI_TRANSITIONS=291} [2024-06-28 01:36:01,848 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 190 predicate places. [2024-06-28 01:36:01,848 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 291 transitions, 2838 flow [2024-06-28 01:36:01,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:01,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:01,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:01,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:36:01,849 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:01,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:01,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1570116976, now seen corresponding path program 1 times [2024-06-28 01:36:01,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:01,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341507647] [2024-06-28 01:36:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:01,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:03,104 INFO 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 01:36:03,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:03,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341507647] [2024-06-28 01:36:03,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341507647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:03,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:03,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:03,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144353495] [2024-06-28 01:36:03,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:03,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:03,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:03,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:36:03,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 291 transitions, 2838 flow. Second operand has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 11 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:03,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:03,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:36:03,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:06,057 INFO L124 PetriNetUnfolderBase]: 8158/13301 cut-off events. [2024-06-28 01:36:06,057 INFO L125 PetriNetUnfolderBase]: For 923043/923177 co-relation queries the response was YES. [2024-06-28 01:36:06,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89377 conditions, 13301 events. 8158/13301 cut-off events. For 923043/923177 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 94963 event pairs, 2258 based on Foata normal form. 18/13020 useless extension candidates. Maximal degree in co-relation 89262. Up to 10933 conditions per place. [2024-06-28 01:36:06,201 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 246 selfloop transitions, 91 changer transitions 0/359 dead transitions. [2024-06-28 01:36:06,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 359 transitions, 3822 flow [2024-06-28 01:36:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:06,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-06-28 01:36:06,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536 [2024-06-28 01:36:06,202 INFO L175 Difference]: Start difference. First operand has 246 places, 291 transitions, 2838 flow. Second operand 10 states and 268 transitions. [2024-06-28 01:36:06,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 359 transitions, 3822 flow [2024-06-28 01:36:07,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 359 transitions, 3681 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:36:07,229 INFO L231 Difference]: Finished difference. Result has 250 places, 296 transitions, 2974 flow [2024-06-28 01:36:07,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2974, PETRI_PLACES=250, PETRI_TRANSITIONS=296} [2024-06-28 01:36:07,230 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 194 predicate places. [2024-06-28 01:36:07,230 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 296 transitions, 2974 flow [2024-06-28 01:36:07,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 11 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:07,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:07,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:07,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:36:07,230 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:07,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:07,231 INFO L85 PathProgramCache]: Analyzing trace with hash 967264556, now seen corresponding path program 2 times [2024-06-28 01:36:07,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:07,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352925719] [2024-06-28 01:36:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:07,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:08,417 INFO 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 01:36:08,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:08,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352925719] [2024-06-28 01:36:08,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352925719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:08,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:08,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:08,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622955604] [2024-06-28 01:36:08,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:08,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:08,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:08,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:08,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:08,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:36:08,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 296 transitions, 2974 flow. Second operand has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 11 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:08,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:08,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:36:08,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:11,198 INFO L124 PetriNetUnfolderBase]: 8218/13399 cut-off events. [2024-06-28 01:36:11,198 INFO L125 PetriNetUnfolderBase]: For 953331/953465 co-relation queries the response was YES. [2024-06-28 01:36:11,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91800 conditions, 13399 events. 8218/13399 cut-off events. For 953331/953465 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 95726 event pairs, 2256 based on Foata normal form. 18/13115 useless extension candidates. Maximal degree in co-relation 91683. Up to 11003 conditions per place. [2024-06-28 01:36:11,377 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 243 selfloop transitions, 98 changer transitions 0/363 dead transitions. [2024-06-28 01:36:11,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 363 transitions, 3972 flow [2024-06-28 01:36:11,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-06-28 01:36:11,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536 [2024-06-28 01:36:11,379 INFO L175 Difference]: Start difference. First operand has 250 places, 296 transitions, 2974 flow. Second operand 10 states and 268 transitions. [2024-06-28 01:36:11,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 363 transitions, 3972 flow [2024-06-28 01:36:12,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 363 transitions, 3733 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 01:36:12,801 INFO L231 Difference]: Finished difference. Result has 254 places, 302 transitions, 3048 flow [2024-06-28 01:36:12,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3048, PETRI_PLACES=254, PETRI_TRANSITIONS=302} [2024-06-28 01:36:12,801 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 198 predicate places. [2024-06-28 01:36:12,801 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 302 transitions, 3048 flow [2024-06-28 01:36:12,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 11 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:12,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:12,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:12,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:36:12,802 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:12,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1262483756, now seen corresponding path program 3 times [2024-06-28 01:36:12,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:12,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400021363] [2024-06-28 01:36:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:12,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:14,062 INFO 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 01:36:14,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:14,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400021363] [2024-06-28 01:36:14,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400021363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:14,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:14,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:14,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873012334] [2024-06-28 01:36:14,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:14,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:14,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:14,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:14,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:14,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:36:14,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 302 transitions, 3048 flow. Second operand has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 11 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:14,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:14,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:36:14,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:16,979 INFO L124 PetriNetUnfolderBase]: 8255/13472 cut-off events. [2024-06-28 01:36:16,979 INFO L125 PetriNetUnfolderBase]: For 981474/981608 co-relation queries the response was YES. [2024-06-28 01:36:17,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93408 conditions, 13472 events. 8255/13472 cut-off events. For 981474/981608 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 96373 event pairs, 2251 based on Foata normal form. 18/13184 useless extension candidates. Maximal degree in co-relation 93289. Up to 11058 conditions per place. [2024-06-28 01:36:17,202 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 243 selfloop transitions, 107 changer transitions 0/372 dead transitions. [2024-06-28 01:36:17,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 372 transitions, 4106 flow [2024-06-28 01:36:17,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:17,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-06-28 01:36:17,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536 [2024-06-28 01:36:17,203 INFO L175 Difference]: Start difference. First operand has 254 places, 302 transitions, 3048 flow. Second operand 10 states and 268 transitions. [2024-06-28 01:36:17,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 372 transitions, 4106 flow [2024-06-28 01:36:18,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 372 transitions, 3839 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 01:36:18,714 INFO L231 Difference]: Finished difference. Result has 258 places, 312 transitions, 3171 flow [2024-06-28 01:36:18,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3171, PETRI_PLACES=258, PETRI_TRANSITIONS=312} [2024-06-28 01:36:18,715 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 202 predicate places. [2024-06-28 01:36:18,715 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 312 transitions, 3171 flow [2024-06-28 01:36:18,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 11 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:18,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:18,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:18,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:36:18,715 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:18,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash 268099344, now seen corresponding path program 4 times [2024-06-28 01:36:18,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:18,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485888727] [2024-06-28 01:36:18,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:18,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:19,866 INFO 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 01:36:19,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:19,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485888727] [2024-06-28 01:36:19,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485888727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:19,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:19,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:19,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386240842] [2024-06-28 01:36:19,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:19,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:19,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:19,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:19,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:19,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:36:19,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 312 transitions, 3171 flow. Second operand has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 11 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:19,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:19,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:36:19,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:22,658 INFO L124 PetriNetUnfolderBase]: 8364/13581 cut-off events. [2024-06-28 01:36:22,658 INFO L125 PetriNetUnfolderBase]: For 999443/999609 co-relation queries the response was YES. [2024-06-28 01:36:22,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94722 conditions, 13581 events. 8364/13581 cut-off events. For 999443/999609 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 96929 event pairs, 2041 based on Foata normal form. 18/13301 useless extension candidates. Maximal degree in co-relation 94601. Up to 10838 conditions per place. [2024-06-28 01:36:22,838 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 243 selfloop transitions, 118 changer transitions 0/383 dead transitions. [2024-06-28 01:36:22,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 383 transitions, 4549 flow [2024-06-28 01:36:22,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-06-28 01:36:22,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548 [2024-06-28 01:36:22,839 INFO L175 Difference]: Start difference. First operand has 258 places, 312 transitions, 3171 flow. Second operand 10 states and 274 transitions. [2024-06-28 01:36:22,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 383 transitions, 4549 flow [2024-06-28 01:36:24,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 383 transitions, 4311 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 01:36:24,362 INFO L231 Difference]: Finished difference. Result has 264 places, 317 transitions, 3351 flow [2024-06-28 01:36:24,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2937, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3351, PETRI_PLACES=264, PETRI_TRANSITIONS=317} [2024-06-28 01:36:24,362 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 208 predicate places. [2024-06-28 01:36:24,362 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 317 transitions, 3351 flow [2024-06-28 01:36:24,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 11 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:24,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:24,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:24,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:36:24,363 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:24,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:24,364 INFO L85 PathProgramCache]: Analyzing trace with hash 610942736, now seen corresponding path program 5 times [2024-06-28 01:36:24,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:24,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831123830] [2024-06-28 01:36:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:24,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:25,696 INFO 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 01:36:25,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:25,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831123830] [2024-06-28 01:36:25,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831123830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:25,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:25,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:25,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627899258] [2024-06-28 01:36:25,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:25,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:25,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:25,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:25,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:25,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:36:25,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 317 transitions, 3351 flow. Second operand has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 11 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:25,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:25,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:36:25,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:28,732 INFO L124 PetriNetUnfolderBase]: 8332/13625 cut-off events. [2024-06-28 01:36:28,732 INFO L125 PetriNetUnfolderBase]: For 1009071/1009205 co-relation queries the response was YES. [2024-06-28 01:36:28,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94092 conditions, 13625 events. 8332/13625 cut-off events. For 1009071/1009205 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 97821 event pairs, 2295 based on Foata normal form. 18/13335 useless extension candidates. Maximal degree in co-relation 93969. Up to 11181 conditions per place. [2024-06-28 01:36:28,913 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 253 selfloop transitions, 103 changer transitions 0/378 dead transitions. [2024-06-28 01:36:28,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 378 transitions, 4288 flow [2024-06-28 01:36:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-06-28 01:36:28,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536 [2024-06-28 01:36:28,915 INFO L175 Difference]: Start difference. First operand has 264 places, 317 transitions, 3351 flow. Second operand 10 states and 268 transitions. [2024-06-28 01:36:28,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 378 transitions, 4288 flow [2024-06-28 01:36:30,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 378 transitions, 3982 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 01:36:30,086 INFO L231 Difference]: Finished difference. Result has 268 places, 318 transitions, 3277 flow [2024-06-28 01:36:30,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3277, PETRI_PLACES=268, PETRI_TRANSITIONS=318} [2024-06-28 01:36:30,086 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 212 predicate places. [2024-06-28 01:36:30,086 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 318 transitions, 3277 flow [2024-06-28 01:36:30,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 11 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:30,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:30,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:30,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:36:30,087 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:30,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:30,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1384452298, now seen corresponding path program 2 times [2024-06-28 01:36:30,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:30,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247292886] [2024-06-28 01:36:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:30,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:31,065 INFO 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 01:36:31,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:31,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247292886] [2024-06-28 01:36:31,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247292886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:31,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:31,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:31,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323571992] [2024-06-28 01:36:31,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:31,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:31,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:31,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:31,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:31,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:36:31,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 318 transitions, 3277 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:31,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:31,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:36:31,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:33,633 INFO L124 PetriNetUnfolderBase]: 8218/13953 cut-off events. [2024-06-28 01:36:33,633 INFO L125 PetriNetUnfolderBase]: For 1010410/1010445 co-relation queries the response was YES. [2024-06-28 01:36:33,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92514 conditions, 13953 events. 8218/13953 cut-off events. For 1010410/1010445 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 105107 event pairs, 2392 based on Foata normal form. 33/13522 useless extension candidates. Maximal degree in co-relation 92389. Up to 11729 conditions per place. [2024-06-28 01:36:33,806 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 288 selfloop transitions, 39 changer transitions 0/356 dead transitions. [2024-06-28 01:36:33,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 356 transitions, 4361 flow [2024-06-28 01:36:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:36:33,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:36:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:36:33,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-28 01:36:33,808 INFO L175 Difference]: Start difference. First operand has 268 places, 318 transitions, 3277 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:36:33,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 356 transitions, 4361 flow [2024-06-28 01:36:34,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 356 transitions, 4128 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:36:34,893 INFO L231 Difference]: Finished difference. Result has 270 places, 326 transitions, 3302 flow [2024-06-28 01:36:34,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3044, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3302, PETRI_PLACES=270, PETRI_TRANSITIONS=326} [2024-06-28 01:36:34,894 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 214 predicate places. [2024-06-28 01:36:34,894 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 326 transitions, 3302 flow [2024-06-28 01:36:34,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:34,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:34,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:34,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:36:34,895 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:34,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:34,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1383917548, now seen corresponding path program 3 times [2024-06-28 01:36:34,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:34,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267002361] [2024-06-28 01:36:34,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:34,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:35,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:35,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267002361] [2024-06-28 01:36:35,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267002361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:35,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:35,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:35,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076931321] [2024-06-28 01:36:35,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:35,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:35,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:35,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:35,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:36,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:36:36,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 326 transitions, 3302 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:36,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:36,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:36:36,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:38,296 INFO L124 PetriNetUnfolderBase]: 8235/13994 cut-off events. [2024-06-28 01:36:38,296 INFO L125 PetriNetUnfolderBase]: For 1036905/1036940 co-relation queries the response was YES. [2024-06-28 01:36:38,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93134 conditions, 13994 events. 8235/13994 cut-off events. For 1036905/1036940 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 105699 event pairs, 2413 based on Foata normal form. 33/13557 useless extension candidates. Maximal degree in co-relation 93007. Up to 11747 conditions per place. [2024-06-28 01:36:38,546 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 290 selfloop transitions, 40 changer transitions 0/359 dead transitions. [2024-06-28 01:36:38,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 359 transitions, 4323 flow [2024-06-28 01:36:38,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:36:38,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:36:38,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:36:38,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-28 01:36:38,548 INFO L175 Difference]: Start difference. First operand has 270 places, 326 transitions, 3302 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:36:38,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 359 transitions, 4323 flow [2024-06-28 01:36:39,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 359 transitions, 4199 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-28 01:36:39,809 INFO L231 Difference]: Finished difference. Result has 274 places, 329 transitions, 3345 flow [2024-06-28 01:36:39,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3190, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3345, PETRI_PLACES=274, PETRI_TRANSITIONS=329} [2024-06-28 01:36:39,810 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 218 predicate places. [2024-06-28 01:36:39,810 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 329 transitions, 3345 flow [2024-06-28 01:36:39,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:39,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:39,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:39,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:36:39,810 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:39,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:39,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1218010818, now seen corresponding path program 4 times [2024-06-28 01:36:39,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:39,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415533605] [2024-06-28 01:36:39,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:39,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:40,757 INFO 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 01:36:40,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:40,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415533605] [2024-06-28 01:36:40,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415533605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:40,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:40,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:40,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379517004] [2024-06-28 01:36:40,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:40,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:40,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:40,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:40,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:40,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:36:40,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 329 transitions, 3345 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:40,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:40,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:36:40,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:43,241 INFO L124 PetriNetUnfolderBase]: 8327/14040 cut-off events. [2024-06-28 01:36:43,241 INFO L125 PetriNetUnfolderBase]: For 1070172/1070198 co-relation queries the response was YES. [2024-06-28 01:36:43,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94655 conditions, 14040 events. 8327/14040 cut-off events. For 1070172/1070198 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 104991 event pairs, 2410 based on Foata normal form. 28/13620 useless extension candidates. Maximal degree in co-relation 94526. Up to 11320 conditions per place. [2024-06-28 01:36:43,439 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 255 selfloop transitions, 89 changer transitions 0/373 dead transitions. [2024-06-28 01:36:43,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 373 transitions, 4799 flow [2024-06-28 01:36:43,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:36:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:36:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:36:43,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-28 01:36:43,440 INFO L175 Difference]: Start difference. First operand has 274 places, 329 transitions, 3345 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:36:43,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 373 transitions, 4799 flow [2024-06-28 01:36:45,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 373 transitions, 4686 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 01:36:45,089 INFO L231 Difference]: Finished difference. Result has 278 places, 340 transitions, 3679 flow [2024-06-28 01:36:45,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3679, PETRI_PLACES=278, PETRI_TRANSITIONS=340} [2024-06-28 01:36:45,089 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 222 predicate places. [2024-06-28 01:36:45,090 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 340 transitions, 3679 flow [2024-06-28 01:36:45,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:45,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:45,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:45,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:36:45,090 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:45,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:45,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1932648494, now seen corresponding path program 5 times [2024-06-28 01:36:45,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:45,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378163399] [2024-06-28 01:36:45,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:45,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:46,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:46,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:46,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378163399] [2024-06-28 01:36:46,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378163399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:46,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:46,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:46,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106229192] [2024-06-28 01:36:46,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:46,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:46,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:46,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:46,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:46,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:36:46,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 340 transitions, 3679 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:46,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:46,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:36:46,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:48,746 INFO L124 PetriNetUnfolderBase]: 8363/14132 cut-off events. [2024-06-28 01:36:48,746 INFO L125 PetriNetUnfolderBase]: For 1108048/1108074 co-relation queries the response was YES. [2024-06-28 01:36:48,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97351 conditions, 14132 events. 8363/14132 cut-off events. For 1108048/1108074 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 105998 event pairs, 2430 based on Foata normal form. 28/13707 useless extension candidates. Maximal degree in co-relation 97220. Up to 11353 conditions per place. [2024-06-28 01:36:48,944 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 263 selfloop transitions, 86 changer transitions 0/378 dead transitions. [2024-06-28 01:36:48,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 378 transitions, 5187 flow [2024-06-28 01:36:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:36:48,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:36:48,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:36:48,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-06-28 01:36:48,946 INFO L175 Difference]: Start difference. First operand has 278 places, 340 transitions, 3679 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:36:48,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 378 transitions, 5187 flow [2024-06-28 01:36:50,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 378 transitions, 4985 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:50,376 INFO L231 Difference]: Finished difference. Result has 284 places, 345 transitions, 3811 flow [2024-06-28 01:36:50,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3491, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3811, PETRI_PLACES=284, PETRI_TRANSITIONS=345} [2024-06-28 01:36:50,377 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 228 predicate places. [2024-06-28 01:36:50,377 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 345 transitions, 3811 flow [2024-06-28 01:36:50,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:50,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:50,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:50,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:36:50,378 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:50,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:50,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1938014258, now seen corresponding path program 6 times [2024-06-28 01:36:50,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:50,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484125885] [2024-06-28 01:36:50,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:50,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:51,408 INFO 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 01:36:51,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:51,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484125885] [2024-06-28 01:36:51,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484125885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:51,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:51,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:51,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590298993] [2024-06-28 01:36:51,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:51,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:51,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:51,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:51,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:51,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:36:51,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 345 transitions, 3811 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:51,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:51,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:36:51,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:54,208 INFO L124 PetriNetUnfolderBase]: 8377/14151 cut-off events. [2024-06-28 01:36:54,208 INFO L125 PetriNetUnfolderBase]: For 1132386/1132412 co-relation queries the response was YES. [2024-06-28 01:36:54,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98272 conditions, 14151 events. 8377/14151 cut-off events. For 1132386/1132412 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 106149 event pairs, 2430 based on Foata normal form. 28/13726 useless extension candidates. Maximal degree in co-relation 98138. Up to 11369 conditions per place. [2024-06-28 01:36:54,408 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 257 selfloop transitions, 94 changer transitions 0/380 dead transitions. [2024-06-28 01:36:54,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 380 transitions, 5074 flow [2024-06-28 01:36:54,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:36:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:36:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:36:54,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:36:54,410 INFO L175 Difference]: Start difference. First operand has 284 places, 345 transitions, 3811 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:36:54,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 380 transitions, 5074 flow [2024-06-28 01:36:55,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 380 transitions, 4779 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 01:36:55,858 INFO L231 Difference]: Finished difference. Result has 286 places, 349 transitions, 3812 flow [2024-06-28 01:36:55,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3526, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3812, PETRI_PLACES=286, PETRI_TRANSITIONS=349} [2024-06-28 01:36:55,858 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 230 predicate places. [2024-06-28 01:36:55,859 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 349 transitions, 3812 flow [2024-06-28 01:36:55,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:55,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:55,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:55,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:36:55,859 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:55,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:55,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1368262858, now seen corresponding path program 4 times [2024-06-28 01:36:55,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:55,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159851838] [2024-06-28 01:36:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:55,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:56,839 INFO 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 01:36:56,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:56,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159851838] [2024-06-28 01:36:56,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159851838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:56,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:56,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:56,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343224990] [2024-06-28 01:36:56,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:56,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:56,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:56,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:56,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:56,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:36:56,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 349 transitions, 3812 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:56,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:56,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:36:56,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:59,423 INFO L124 PetriNetUnfolderBase]: 8373/14223 cut-off events. [2024-06-28 01:36:59,423 INFO L125 PetriNetUnfolderBase]: For 1148984/1149019 co-relation queries the response was YES. [2024-06-28 01:36:59,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98295 conditions, 14223 events. 8373/14223 cut-off events. For 1148984/1149019 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 107551 event pairs, 2428 based on Foata normal form. 33/13779 useless extension candidates. Maximal degree in co-relation 98160. Up to 11936 conditions per place. [2024-06-28 01:36:59,699 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 310 selfloop transitions, 40 changer transitions 0/379 dead transitions. [2024-06-28 01:36:59,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 379 transitions, 4630 flow [2024-06-28 01:36:59,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:36:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:36:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:36:59,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-28 01:36:59,700 INFO L175 Difference]: Start difference. First operand has 286 places, 349 transitions, 3812 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:36:59,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 379 transitions, 4630 flow [2024-06-28 01:37:01,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 379 transitions, 4354 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:01,298 INFO L231 Difference]: Finished difference. Result has 289 places, 350 transitions, 3630 flow [2024-06-28 01:37:01,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3536, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3630, PETRI_PLACES=289, PETRI_TRANSITIONS=350} [2024-06-28 01:37:01,298 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 233 predicate places. [2024-06-28 01:37:01,298 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 350 transitions, 3630 flow [2024-06-28 01:37:01,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:01,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:01,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:01,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:37:01,299 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:01,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1686838102, now seen corresponding path program 1 times [2024-06-28 01:37:01,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:01,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827253394] [2024-06-28 01:37:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:01,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:02,091 INFO 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 01:37:02,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:02,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827253394] [2024-06-28 01:37:02,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827253394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:02,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:02,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:02,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075500554] [2024-06-28 01:37:02,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:02,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:02,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:02,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:02,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:02,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:37:02,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 350 transitions, 3630 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:02,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:02,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:37:02,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:04,815 INFO L124 PetriNetUnfolderBase]: 8077/13550 cut-off events. [2024-06-28 01:37:04,816 INFO L125 PetriNetUnfolderBase]: For 1176303/1176455 co-relation queries the response was YES. [2024-06-28 01:37:04,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96437 conditions, 13550 events. 8077/13550 cut-off events. For 1176303/1176455 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 100276 event pairs, 2238 based on Foata normal form. 12/13220 useless extension candidates. Maximal degree in co-relation 96301. Up to 11444 conditions per place. [2024-06-28 01:37:05,049 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 336 selfloop transitions, 21 changer transitions 0/390 dead transitions. [2024-06-28 01:37:05,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 390 transitions, 4537 flow [2024-06-28 01:37:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:05,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:37:05,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-28 01:37:05,050 INFO L175 Difference]: Start difference. First operand has 289 places, 350 transitions, 3630 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:37:05,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 390 transitions, 4537 flow [2024-06-28 01:37:06,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 390 transitions, 4469 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:06,852 INFO L231 Difference]: Finished difference. Result has 293 places, 357 transitions, 3730 flow [2024-06-28 01:37:06,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3562, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3730, PETRI_PLACES=293, PETRI_TRANSITIONS=357} [2024-06-28 01:37:06,853 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 237 predicate places. [2024-06-28 01:37:06,853 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 357 transitions, 3730 flow [2024-06-28 01:37:06,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:06,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:06,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:06,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:37:06,854 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:06,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1686687442, now seen corresponding path program 2 times [2024-06-28 01:37:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788200883] [2024-06-28 01:37:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:07,778 INFO 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 01:37:07,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:07,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788200883] [2024-06-28 01:37:07,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788200883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:07,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:07,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:07,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276592446] [2024-06-28 01:37:07,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:07,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:07,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:07,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:07,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:07,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:37:07,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 357 transitions, 3730 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:07,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:07,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:37:07,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:10,595 INFO L124 PetriNetUnfolderBase]: 8111/13577 cut-off events. [2024-06-28 01:37:10,595 INFO L125 PetriNetUnfolderBase]: For 1207634/1207786 co-relation queries the response was YES. [2024-06-28 01:37:10,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98442 conditions, 13577 events. 8111/13577 cut-off events. For 1207634/1207786 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 100325 event pairs, 2219 based on Foata normal form. 12/13249 useless extension candidates. Maximal degree in co-relation 98304. Up to 11459 conditions per place. [2024-06-28 01:37:10,832 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 334 selfloop transitions, 26 changer transitions 0/393 dead transitions. [2024-06-28 01:37:10,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 393 transitions, 4626 flow [2024-06-28 01:37:10,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:10,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:37:10,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:37:10,834 INFO L175 Difference]: Start difference. First operand has 293 places, 357 transitions, 3730 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:37:10,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 393 transitions, 4626 flow [2024-06-28 01:37:12,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 393 transitions, 4527 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:12,596 INFO L231 Difference]: Finished difference. Result has 296 places, 360 transitions, 3761 flow [2024-06-28 01:37:12,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3631, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3761, PETRI_PLACES=296, PETRI_TRANSITIONS=360} [2024-06-28 01:37:12,597 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 240 predicate places. [2024-06-28 01:37:12,597 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 360 transitions, 3761 flow [2024-06-28 01:37:12,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:12,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:12,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:12,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:37:12,597 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:12,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:12,600 INFO L85 PathProgramCache]: Analyzing trace with hash -38556830, now seen corresponding path program 1 times [2024-06-28 01:37:12,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:12,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291942884] [2024-06-28 01:37:12,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:12,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:13,521 INFO 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 01:37:13,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:13,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291942884] [2024-06-28 01:37:13,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291942884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:13,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:13,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:13,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969158842] [2024-06-28 01:37:13,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:13,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:13,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:13,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:13,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:37:13,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 360 transitions, 3761 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:13,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:13,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:37:13,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:16,676 INFO L124 PetriNetUnfolderBase]: 8477/14055 cut-off events. [2024-06-28 01:37:16,677 INFO L125 PetriNetUnfolderBase]: For 1225781/1225801 co-relation queries the response was YES. [2024-06-28 01:37:16,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101355 conditions, 14055 events. 8477/14055 cut-off events. For 1225781/1225801 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 102854 event pairs, 2412 based on Foata normal form. 1/13750 useless extension candidates. Maximal degree in co-relation 101216. Up to 12213 conditions per place. [2024-06-28 01:37:16,951 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 358 selfloop transitions, 20 changer transitions 0/394 dead transitions. [2024-06-28 01:37:16,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 394 transitions, 4683 flow [2024-06-28 01:37:16,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:16,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:37:16,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485 [2024-06-28 01:37:16,952 INFO L175 Difference]: Start difference. First operand has 296 places, 360 transitions, 3761 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:37:16,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 394 transitions, 4683 flow [2024-06-28 01:37:19,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 394 transitions, 4575 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:19,201 INFO L231 Difference]: Finished difference. Result has 298 places, 363 transitions, 3773 flow [2024-06-28 01:37:19,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3653, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3773, PETRI_PLACES=298, PETRI_TRANSITIONS=363} [2024-06-28 01:37:19,202 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 242 predicate places. [2024-06-28 01:37:19,202 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 363 transitions, 3773 flow [2024-06-28 01:37:19,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:19,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:19,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:19,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:37:19,203 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:19,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:19,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1681085494, now seen corresponding path program 1 times [2024-06-28 01:37:19,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:19,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870138009] [2024-06-28 01:37:19,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:19,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:20,128 INFO 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 01:37:20,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:20,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870138009] [2024-06-28 01:37:20,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870138009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:20,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:20,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:20,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952137689] [2024-06-28 01:37:20,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:20,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:20,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:20,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:20,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:20,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:37:20,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 363 transitions, 3773 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:20,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:20,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:37:20,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:23,668 INFO L124 PetriNetUnfolderBase]: 8114/13499 cut-off events. [2024-06-28 01:37:23,668 INFO L125 PetriNetUnfolderBase]: For 1250565/1250609 co-relation queries the response was YES. [2024-06-28 01:37:23,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99438 conditions, 13499 events. 8114/13499 cut-off events. For 1250565/1250609 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 99330 event pairs, 2275 based on Foata normal form. 26/13167 useless extension candidates. Maximal degree in co-relation 99298. Up to 11534 conditions per place. [2024-06-28 01:37:23,894 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 341 selfloop transitions, 19 changer transitions 0/396 dead transitions. [2024-06-28 01:37:23,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 396 transitions, 4669 flow [2024-06-28 01:37:23,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:37:23,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975 [2024-06-28 01:37:23,896 INFO L175 Difference]: Start difference. First operand has 298 places, 363 transitions, 3773 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:37:23,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 396 transitions, 4669 flow [2024-06-28 01:37:25,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 396 transitions, 4571 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:25,675 INFO L231 Difference]: Finished difference. Result has 300 places, 366 transitions, 3793 flow [2024-06-28 01:37:25,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3675, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3793, PETRI_PLACES=300, PETRI_TRANSITIONS=366} [2024-06-28 01:37:25,675 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 244 predicate places. [2024-06-28 01:37:25,676 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 366 transitions, 3793 flow [2024-06-28 01:37:25,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:25,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:25,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:25,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:37:25,676 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:25,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:25,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1681085804, now seen corresponding path program 2 times [2024-06-28 01:37:25,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:25,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350844503] [2024-06-28 01:37:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:25,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:26,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:26,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350844503] [2024-06-28 01:37:26,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350844503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:26,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:26,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:26,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556128993] [2024-06-28 01:37:26,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:26,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:26,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:26,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:37:26,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 366 transitions, 3793 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:26,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:26,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:37:26,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:30,269 INFO L124 PetriNetUnfolderBase]: 8501/14062 cut-off events. [2024-06-28 01:37:30,269 INFO L125 PetriNetUnfolderBase]: For 1279578/1279598 co-relation queries the response was YES. [2024-06-28 01:37:30,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103241 conditions, 14062 events. 8501/14062 cut-off events. For 1279578/1279598 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 102726 event pairs, 2378 based on Foata normal form. 1/13760 useless extension candidates. Maximal degree in co-relation 103100. Up to 12190 conditions per place. [2024-06-28 01:37:30,470 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 354 selfloop transitions, 33 changer transitions 0/403 dead transitions. [2024-06-28 01:37:30,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 403 transitions, 5015 flow [2024-06-28 01:37:30,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:30,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:37:30,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-28 01:37:30,471 INFO L175 Difference]: Start difference. First operand has 300 places, 366 transitions, 3793 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:37:30,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 403 transitions, 5015 flow [2024-06-28 01:37:32,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 403 transitions, 4919 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:32,482 INFO L231 Difference]: Finished difference. Result has 302 places, 372 transitions, 3927 flow [2024-06-28 01:37:32,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3697, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3927, PETRI_PLACES=302, PETRI_TRANSITIONS=372} [2024-06-28 01:37:32,483 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 246 predicate places. [2024-06-28 01:37:32,483 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 372 transitions, 3927 flow [2024-06-28 01:37:32,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:32,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:32,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:32,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:37:32,483 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:32,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:32,484 INFO L85 PathProgramCache]: Analyzing trace with hash -32964058, now seen corresponding path program 3 times [2024-06-28 01:37:32,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:32,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963632877] [2024-06-28 01:37:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:32,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:33,421 INFO 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 01:37:33,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:33,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963632877] [2024-06-28 01:37:33,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963632877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:33,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:33,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:33,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20567684] [2024-06-28 01:37:33,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:33,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:33,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:33,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:33,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:33,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:37:33,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 372 transitions, 3927 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:33,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:33,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:37:33,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:36,763 INFO L124 PetriNetUnfolderBase]: 8238/13759 cut-off events. [2024-06-28 01:37:36,763 INFO L125 PetriNetUnfolderBase]: For 1325117/1325296 co-relation queries the response was YES. [2024-06-28 01:37:36,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103521 conditions, 13759 events. 8238/13759 cut-off events. For 1325117/1325296 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 101569 event pairs, 2216 based on Foata normal form. 23/13437 useless extension candidates. Maximal degree in co-relation 103379. Up to 11564 conditions per place. [2024-06-28 01:37:36,968 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 338 selfloop transitions, 33 changer transitions 0/407 dead transitions. [2024-06-28 01:37:36,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 407 transitions, 4867 flow [2024-06-28 01:37:36,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:37:36,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:37:36,969 INFO L175 Difference]: Start difference. First operand has 302 places, 372 transitions, 3927 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:37:36,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 407 transitions, 4867 flow [2024-06-28 01:37:39,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 407 transitions, 4762 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:39,395 INFO L231 Difference]: Finished difference. Result has 306 places, 375 transitions, 3978 flow [2024-06-28 01:37:39,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3822, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3978, PETRI_PLACES=306, PETRI_TRANSITIONS=375} [2024-06-28 01:37:39,395 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 250 predicate places. [2024-06-28 01:37:39,396 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 375 transitions, 3978 flow [2024-06-28 01:37:39,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:39,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:39,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:39,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:37:39,396 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:39,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:39,396 INFO L85 PathProgramCache]: Analyzing trace with hash -32963810, now seen corresponding path program 3 times [2024-06-28 01:37:39,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:39,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836666237] [2024-06-28 01:37:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:39,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:40,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:40,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836666237] [2024-06-28 01:37:40,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836666237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:40,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:40,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:40,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002796741] [2024-06-28 01:37:40,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:40,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:40,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:40,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:40,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:37:40,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 375 transitions, 3978 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:40,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:40,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:37:40,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:43,791 INFO L124 PetriNetUnfolderBase]: 8532/14147 cut-off events. [2024-06-28 01:37:43,791 INFO L125 PetriNetUnfolderBase]: For 1335730/1335750 co-relation queries the response was YES. [2024-06-28 01:37:43,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105727 conditions, 14147 events. 8532/14147 cut-off events. For 1335730/1335750 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 103751 event pairs, 2400 based on Foata normal form. 1/13839 useless extension candidates. Maximal degree in co-relation 105583. Up to 12233 conditions per place. [2024-06-28 01:37:43,998 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 357 selfloop transitions, 32 changer transitions 0/405 dead transitions. [2024-06-28 01:37:43,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 405 transitions, 4864 flow [2024-06-28 01:37:43,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:43,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:37:43,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-28 01:37:43,999 INFO L175 Difference]: Start difference. First operand has 306 places, 375 transitions, 3978 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:37:43,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 405 transitions, 4864 flow [2024-06-28 01:37:46,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 405 transitions, 4686 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:46,866 INFO L231 Difference]: Finished difference. Result has 308 places, 375 transitions, 3870 flow [2024-06-28 01:37:46,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3800, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3870, PETRI_PLACES=308, PETRI_TRANSITIONS=375} [2024-06-28 01:37:46,867 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 252 predicate places. [2024-06-28 01:37:46,867 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 375 transitions, 3870 flow [2024-06-28 01:37:46,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:46,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:46,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:46,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:37:46,867 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:46,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:46,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1384102060, now seen corresponding path program 2 times [2024-06-28 01:37:46,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:46,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988508490] [2024-06-28 01:37:46,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:46,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:48,005 INFO 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 01:37:48,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:48,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988508490] [2024-06-28 01:37:48,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988508490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:48,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:48,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:48,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936524078] [2024-06-28 01:37:48,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:48,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:48,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:48,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:48,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:48,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:37:48,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 375 transitions, 3870 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:48,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:48,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:37:48,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:51,389 INFO L124 PetriNetUnfolderBase]: 8277/14166 cut-off events. [2024-06-28 01:37:51,389 INFO L125 PetriNetUnfolderBase]: For 1376920/1376990 co-relation queries the response was YES. [2024-06-28 01:37:51,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105050 conditions, 14166 events. 8277/14166 cut-off events. For 1376920/1376990 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 108063 event pairs, 2259 based on Foata normal form. 34/13719 useless extension candidates. Maximal degree in co-relation 104905. Up to 11640 conditions per place. [2024-06-28 01:37:51,603 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 334 selfloop transitions, 43 changer transitions 0/415 dead transitions. [2024-06-28 01:37:51,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 415 transitions, 5364 flow [2024-06-28 01:37:51,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:51,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:37:51,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-28 01:37:51,604 INFO L175 Difference]: Start difference. First operand has 308 places, 375 transitions, 3870 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:37:51,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 415 transitions, 5364 flow [2024-06-28 01:37:53,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 415 transitions, 5276 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:37:53,973 INFO L231 Difference]: Finished difference. Result has 309 places, 384 transitions, 4114 flow [2024-06-28 01:37:53,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3782, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4114, PETRI_PLACES=309, PETRI_TRANSITIONS=384} [2024-06-28 01:37:53,973 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 253 predicate places. [2024-06-28 01:37:53,973 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 384 transitions, 4114 flow [2024-06-28 01:37:53,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:53,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:53,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:53,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:37:53,974 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:53,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:53,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1218195516, now seen corresponding path program 4 times [2024-06-28 01:37:53,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:53,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784409738] [2024-06-28 01:37:53,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:53,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:54,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:54,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784409738] [2024-06-28 01:37:54,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784409738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:54,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:54,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:54,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914627267] [2024-06-28 01:37:54,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:54,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:54,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:54,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:54,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:55,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:37:55,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 384 transitions, 4114 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:55,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:55,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:37:55,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand