./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix033_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix033_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:32:41,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:32:41,622 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:32:41,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:32:41,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:32:41,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:32:41,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:32:41,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:32:41,650 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:32:41,653 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:32:41,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:32:41,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:32:41,654 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:32:41,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:32:41,655 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:32:41,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:32:41,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:32:41,656 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:32:41,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:32:41,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:32:41,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:32:41,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:32:41,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:32:41,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:32:41,657 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:32:41,658 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:32:41,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:32:41,658 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:32:41,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:32:41,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:32:41,659 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:32:41,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:32:41,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:41,660 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:32:41,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:32:41,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:32:41,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:32:41,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:32:41,661 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:32:41,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:32:41,661 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:32:41,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:32:41,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:32:41,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:32:41,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:32:41,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:32:41,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:32:41,894 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:32:41,895 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:32:41,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.i [2024-06-28 01:32:42,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:32:43,089 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:32:43,089 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.i [2024-06-28 01:32:43,102 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48aa9c4a8/cbc13df187374504ba4d196fd7d55abc/FLAG490e47fc9 [2024-06-28 01:32:43,113 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48aa9c4a8/cbc13df187374504ba4d196fd7d55abc [2024-06-28 01:32:43,115 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:32:43,115 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:32:43,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix033_tso.oepc.yml/witness.yml [2024-06-28 01:32:43,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:32:43,299 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:32:43,300 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:43,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:32:43,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:32:43,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:43" (1/2) ... [2024-06-28 01:32:43,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ec69df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:43, skipping insertion in model container [2024-06-28 01:32:43,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:43" (1/2) ... [2024-06-28 01:32:43,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@60805d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:43, skipping insertion in model container [2024-06-28 01:32:43,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:43" (2/2) ... [2024-06-28 01:32:43,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ec69df and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:43, skipping insertion in model container [2024-06-28 01:32:43,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:43" (2/2) ... [2024-06-28 01:32:43,310 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:32:43,393 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:32:43,395 INFO L97 edCorrectnessWitness]: Location invariant before [L843-L843] (((((((((((((((((((((! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-28 01:32:43,395 INFO L97 edCorrectnessWitness]: Location invariant before [L845-L845] (((((((((((((((((((((! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$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)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-28 01:32:43,395 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((((! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-28 01:32:43,395 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:32:43,395 INFO L106 edCorrectnessWitness]: ghost_update [L841-L841] multithreaded = 1; [2024-06-28 01:32:43,436 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:32:43,569 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_tso.oepc.i[949,962] [2024-06-28 01:32:43,719 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:43,727 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:32:43,762 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_tso.oepc.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:32:43,878 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:43,911 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:32:43,912 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:43 WrapperNode [2024-06-28 01:32:43,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:43,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:43,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:32:43,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:32:43,918 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 01:32:43" (1/1) ... [2024-06-28 01:32:43,934 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 01:32:43" (1/1) ... [2024-06-28 01:32:43,971 INFO L138 Inliner]: procedures = 175, calls = 50, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2024-06-28 01:32:43,971 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:43,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:32:43,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:32:43,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:32:43,991 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 01:32:43" (1/1) ... [2024-06-28 01:32:43,992 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 01:32:43" (1/1) ... [2024-06-28 01:32:43,994 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 01:32:43" (1/1) ... [2024-06-28 01:32:44,008 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 01:32:44,015 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 01:32:43" (1/1) ... [2024-06-28 01:32:44,015 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 01:32:43" (1/1) ... [2024-06-28 01:32:44,029 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 01:32:43" (1/1) ... [2024-06-28 01:32:44,041 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 01:32:43" (1/1) ... [2024-06-28 01:32:44,043 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 01:32:43" (1/1) ... [2024-06-28 01:32:44,044 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 01:32:43" (1/1) ... [2024-06-28 01:32:44,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:32:44,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:32:44,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:32:44,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:32:44,049 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 01:32:43" (1/1) ... [2024-06-28 01:32:44,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:44,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:32:44,077 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 01:32:44,094 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 01:32:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:32:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:32:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:32:44,109 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:32:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:32:44,109 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:32:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:32:44,110 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:32:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:32:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:32:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:32:44,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:32:44,112 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 01:32:44,220 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:32:44,222 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:32:44,522 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:32:44,522 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:32:44,688 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:32:44,689 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:32:44,689 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:44 BoogieIcfgContainer [2024-06-28 01:32:44,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:32:44,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:32:44,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:32:44,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:32:44,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:32:43" (1/4) ... [2024-06-28 01:32:44,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a096b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:32:44, skipping insertion in model container [2024-06-28 01:32:44,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:43" (2/4) ... [2024-06-28 01:32:44,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a096b3f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:32:44, skipping insertion in model container [2024-06-28 01:32:44,696 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 01:32:43" (3/4) ... [2024-06-28 01:32:44,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a096b3f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:32:44, skipping insertion in model container [2024-06-28 01:32:44,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:44" (4/4) ... [2024-06-28 01:32:44,697 INFO L112 eAbstractionObserver]: Analyzing ICFG mix033_tso.oepc.i [2024-06-28 01:32:44,711 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:32:44,711 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:32:44,711 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:32:44,752 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:32:44,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 112 flow [2024-06-28 01:32:44,812 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-06-28 01:32:44,812 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:44,815 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 85 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 01:32:44,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 112 flow [2024-06-28 01:32:44,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 103 flow [2024-06-28 01:32:44,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:32:44,839 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;@388df8b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:32:44,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:32:44,843 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:32:44,843 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:32:44,843 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:44,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:44,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:32:44,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:44,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:44,886 INFO L85 PathProgramCache]: Analyzing trace with hash 349948840, now seen corresponding path program 1 times [2024-06-28 01:32:44,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:44,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410884864] [2024-06-28 01:32:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:44,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:45,937 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 01:32:45,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:45,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410884864] [2024-06-28 01:32:45,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410884864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:45,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:45,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:45,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640059670] [2024-06-28 01:32:45,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:45,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:45,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:45,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:45,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:46,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-28 01:32:46,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:46,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:46,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-28 01:32:46,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:46,937 INFO L124 PetriNetUnfolderBase]: 5133/8341 cut-off events. [2024-06-28 01:32:46,937 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-06-28 01:32:46,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15783 conditions, 8341 events. 5133/8341 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 55543 event pairs, 4292 based on Foata normal form. 253/7857 useless extension candidates. Maximal degree in co-relation 15771. Up to 7326 conditions per place. [2024-06-28 01:32:46,983 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 44 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2024-06-28 01:32:46,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 237 flow [2024-06-28 01:32:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:46,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:46,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-28 01:32:46,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-06-28 01:32:46,995 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 103 flow. Second operand 3 states and 102 transitions. [2024-06-28 01:32:46,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 237 flow [2024-06-28 01:32:46,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 232 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:47,003 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 135 flow [2024-06-28 01:32:47,004 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 01:32:47,007 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-06-28 01:32:47,007 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 135 flow [2024-06-28 01:32:47,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:47,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:47,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:47,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:32:47,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:47,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:47,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1293438023, now seen corresponding path program 1 times [2024-06-28 01:32:47,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:47,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402908615] [2024-06-28 01:32:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:47,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:47,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:47,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402908615] [2024-06-28 01:32:47,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402908615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:47,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:47,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:32:47,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845982413] [2024-06-28 01:32:47,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:47,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:32:47,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:47,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:32:47,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:32:47,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:32:47,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:47,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:47,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:32:47,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:48,598 INFO L124 PetriNetUnfolderBase]: 5987/8984 cut-off events. [2024-06-28 01:32:48,598 INFO L125 PetriNetUnfolderBase]: For 1174/1174 co-relation queries the response was YES. [2024-06-28 01:32:48,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19456 conditions, 8984 events. 5987/8984 cut-off events. For 1174/1174 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 55284 event pairs, 3308 based on Foata normal form. 3/8495 useless extension candidates. Maximal degree in co-relation 19444. Up to 8488 conditions per place. [2024-06-28 01:32:48,639 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 57 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2024-06-28 01:32:48,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 78 transitions, 337 flow [2024-06-28 01:32:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:32:48,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:32:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-28 01:32:48,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-06-28 01:32:48,641 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 135 flow. Second operand 4 states and 129 transitions. [2024-06-28 01:32:48,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 78 transitions, 337 flow [2024-06-28 01:32:48,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:48,643 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 181 flow [2024-06-28 01:32:48,643 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 01:32:48,644 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-06-28 01:32:48,644 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 181 flow [2024-06-28 01:32:48,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:48,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:48,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:48,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:32:48,645 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:48,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:48,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1441874731, now seen corresponding path program 1 times [2024-06-28 01:32:48,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:48,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172170476] [2024-06-28 01:32:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:48,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:49,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:49,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172170476] [2024-06-28 01:32:49,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172170476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:49,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:49,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:32:49,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357376947] [2024-06-28 01:32:49,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:49,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:32:49,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:49,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:32:49,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:32:49,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:32:49,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:49,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:49,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:32:49,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:50,275 INFO L124 PetriNetUnfolderBase]: 5971/9470 cut-off events. [2024-06-28 01:32:50,275 INFO L125 PetriNetUnfolderBase]: For 3285/3285 co-relation queries the response was YES. [2024-06-28 01:32:50,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21706 conditions, 9470 events. 5971/9470 cut-off events. For 3285/3285 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 62594 event pairs, 2884 based on Foata normal form. 6/8797 useless extension candidates. Maximal degree in co-relation 21692. Up to 8437 conditions per place. [2024-06-28 01:32:50,323 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 69 selfloop transitions, 16 changer transitions 0/97 dead transitions. [2024-06-28 01:32:50,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 97 transitions, 496 flow [2024-06-28 01:32:50,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:32:50,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:32:50,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-28 01:32:50,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-06-28 01:32:50,329 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 181 flow. Second operand 5 states and 155 transitions. [2024-06-28 01:32:50,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 97 transitions, 496 flow [2024-06-28 01:32:50,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 97 transitions, 460 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:50,334 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 304 flow [2024-06-28 01:32:50,334 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2024-06-28 01:32:50,335 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-06-28 01:32:50,335 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 304 flow [2024-06-28 01:32:50,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:50,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:50,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:50,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:32:50,336 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:50,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:50,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1440675576, now seen corresponding path program 1 times [2024-06-28 01:32:50,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:50,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778318367] [2024-06-28 01:32:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:50,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:50,417 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 01:32:50,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:50,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778318367] [2024-06-28 01:32:50,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778318367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:50,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:50,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:50,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61751357] [2024-06-28 01:32:50,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:50,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:50,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:50,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:50,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:50,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 50 [2024-06-28 01:32:50,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:50,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:50,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 50 [2024-06-28 01:32:50,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:50,750 INFO L124 PetriNetUnfolderBase]: 1239/2572 cut-off events. [2024-06-28 01:32:50,750 INFO L125 PetriNetUnfolderBase]: For 1304/1456 co-relation queries the response was YES. [2024-06-28 01:32:50,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5499 conditions, 2572 events. 1239/2572 cut-off events. For 1304/1456 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 19505 event pairs, 618 based on Foata normal form. 21/2401 useless extension candidates. Maximal degree in co-relation 5482. Up to 1578 conditions per place. [2024-06-28 01:32:50,766 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 35 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-06-28 01:32:50,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 375 flow [2024-06-28 01:32:50,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-28 01:32:50,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7733333333333333 [2024-06-28 01:32:50,767 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 304 flow. Second operand 3 states and 116 transitions. [2024-06-28 01:32:50,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 375 flow [2024-06-28 01:32:50,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 367 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 01:32:50,773 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 267 flow [2024-06-28 01:32:50,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-06-28 01:32:50,774 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-28 01:32:50,775 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 267 flow [2024-06-28 01:32:50,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:50,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:50,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:50,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:32:50,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:50,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2057146598, now seen corresponding path program 1 times [2024-06-28 01:32:50,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:50,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143457477] [2024-06-28 01:32:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:50,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:51,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:51,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143457477] [2024-06-28 01:32:51,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143457477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:51,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:51,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:51,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826529986] [2024-06-28 01:32:51,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:51,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:51,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:51,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:51,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:52,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-28 01:32:52,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:52,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:52,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-28 01:32:52,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:52,973 INFO L124 PetriNetUnfolderBase]: 5064/8057 cut-off events. [2024-06-28 01:32:52,974 INFO L125 PetriNetUnfolderBase]: For 7060/7060 co-relation queries the response was YES. [2024-06-28 01:32:52,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19826 conditions, 8057 events. 5064/8057 cut-off events. For 7060/7060 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 51765 event pairs, 2100 based on Foata normal form. 6/7777 useless extension candidates. Maximal degree in co-relation 19807. Up to 7126 conditions per place. [2024-06-28 01:32:53,002 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 71 selfloop transitions, 16 changer transitions 1/100 dead transitions. [2024-06-28 01:32:53,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 100 transitions, 541 flow [2024-06-28 01:32:53,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:53,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-28 01:32:53,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 01:32:53,004 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 267 flow. Second operand 6 states and 175 transitions. [2024-06-28 01:32:53,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 100 transitions, 541 flow [2024-06-28 01:32:53,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 100 transitions, 525 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:53,009 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 309 flow [2024-06-28 01:32:53,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-28 01:32:53,010 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-06-28 01:32:53,010 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 309 flow [2024-06-28 01:32:53,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:53,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:53,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:53,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:32:53,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:53,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:53,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1509501900, now seen corresponding path program 1 times [2024-06-28 01:32:53,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:53,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106563825] [2024-06-28 01:32:53,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:53,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:53,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:53,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106563825] [2024-06-28 01:32:53,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106563825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:53,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:53,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:53,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100490605] [2024-06-28 01:32:53,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:53,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:53,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:53,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:53,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:53,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-28 01:32:53,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 309 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:53,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:53,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-28 01:32:53,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:54,436 INFO L124 PetriNetUnfolderBase]: 4335/7037 cut-off events. [2024-06-28 01:32:54,437 INFO L125 PetriNetUnfolderBase]: For 7908/7908 co-relation queries the response was YES. [2024-06-28 01:32:54,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18109 conditions, 7037 events. 4335/7037 cut-off events. For 7908/7908 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 44855 event pairs, 2340 based on Foata normal form. 2/6735 useless extension candidates. Maximal degree in co-relation 18088. Up to 6189 conditions per place. [2024-06-28 01:32:54,473 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 69 selfloop transitions, 9 changer transitions 0/89 dead transitions. [2024-06-28 01:32:54,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 559 flow [2024-06-28 01:32:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:32:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:32:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-28 01:32:54,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2024-06-28 01:32:54,475 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 309 flow. Second operand 5 states and 129 transitions. [2024-06-28 01:32:54,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 559 flow [2024-06-28 01:32:54,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 511 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:54,479 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 354 flow [2024-06-28 01:32:54,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-06-28 01:32:54,480 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-28 01:32:54,480 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 354 flow [2024-06-28 01:32:54,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:54,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:54,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:54,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:32:54,481 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:54,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:54,481 INFO L85 PathProgramCache]: Analyzing trace with hash -450080357, now seen corresponding path program 1 times [2024-06-28 01:32:54,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:54,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929572033] [2024-06-28 01:32:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:54,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:55,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:55,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929572033] [2024-06-28 01:32:55,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929572033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:55,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:55,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:55,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814908631] [2024-06-28 01:32:55,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:55,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:55,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:55,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:55,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:55,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:55,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:55,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:55,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:55,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:56,152 INFO L124 PetriNetUnfolderBase]: 5114/8334 cut-off events. [2024-06-28 01:32:56,152 INFO L125 PetriNetUnfolderBase]: For 12149/12149 co-relation queries the response was YES. [2024-06-28 01:32:56,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22488 conditions, 8334 events. 5114/8334 cut-off events. For 12149/12149 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 54152 event pairs, 2786 based on Foata normal form. 2/8048 useless extension candidates. Maximal degree in co-relation 22464. Up to 7262 conditions per place. [2024-06-28 01:32:56,200 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 79 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-06-28 01:32:56,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 101 transitions, 630 flow [2024-06-28 01:32:56,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:56,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 01:32:56,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:32:56,202 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 354 flow. Second operand 6 states and 150 transitions. [2024-06-28 01:32:56,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 101 transitions, 630 flow [2024-06-28 01:32:56,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 101 transitions, 613 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:56,208 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 395 flow [2024-06-28 01:32:56,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=395, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-06-28 01:32:56,210 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-28 01:32:56,210 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 395 flow [2024-06-28 01:32:56,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:56,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:56,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:56,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:32:56,211 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:56,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:56,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1073340757, now seen corresponding path program 1 times [2024-06-28 01:32:56,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:56,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885369790] [2024-06-28 01:32:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:56,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:56,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:56,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885369790] [2024-06-28 01:32:56,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885369790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:56,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:56,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:56,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816281919] [2024-06-28 01:32:56,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:56,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:56,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:56,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:56,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:57,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:57,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:57,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:57,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:57,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:58,024 INFO L124 PetriNetUnfolderBase]: 5710/9243 cut-off events. [2024-06-28 01:32:58,024 INFO L125 PetriNetUnfolderBase]: For 18630/18639 co-relation queries the response was YES. [2024-06-28 01:32:58,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26371 conditions, 9243 events. 5710/9243 cut-off events. For 18630/18639 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 60315 event pairs, 3053 based on Foata normal form. 8/8962 useless extension candidates. Maximal degree in co-relation 26345. Up to 8118 conditions per place. [2024-06-28 01:32:58,077 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 82 selfloop transitions, 19 changer transitions 0/112 dead transitions. [2024-06-28 01:32:58,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 112 transitions, 759 flow [2024-06-28 01:32:58,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:32:58,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-06-28 01:32:58,081 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 395 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:32:58,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 112 transitions, 759 flow [2024-06-28 01:32:58,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 112 transitions, 725 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:58,092 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 542 flow [2024-06-28 01:32:58,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2024-06-28 01:32:58,094 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-06-28 01:32:58,094 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 542 flow [2024-06-28 01:32:58,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:58,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:58,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:58,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:32:58,095 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:58,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:58,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1110059349, now seen corresponding path program 2 times [2024-06-28 01:32:58,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:58,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408008073] [2024-06-28 01:32:58,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:58,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:58,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:58,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408008073] [2024-06-28 01:32:58,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408008073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:58,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:58,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:58,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794500636] [2024-06-28 01:32:58,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:58,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:58,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:58,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:58,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:58,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:32:58,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 542 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:58,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:58,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:32:58,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:59,951 INFO L124 PetriNetUnfolderBase]: 5776/9334 cut-off events. [2024-06-28 01:32:59,951 INFO L125 PetriNetUnfolderBase]: For 25531/25531 co-relation queries the response was YES. [2024-06-28 01:32:59,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28869 conditions, 9334 events. 5776/9334 cut-off events. For 25531/25531 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 60783 event pairs, 3003 based on Foata normal form. 2/9046 useless extension candidates. Maximal degree in co-relation 28839. Up to 8191 conditions per place. [2024-06-28 01:32:59,991 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 91 selfloop transitions, 29 changer transitions 0/131 dead transitions. [2024-06-28 01:32:59,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 131 transitions, 974 flow [2024-06-28 01:32:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:59,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:32:59,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:32:59,993 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 542 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:32:59,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 131 transitions, 974 flow [2024-06-28 01:33:00,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 940 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-28 01:33:00,004 INFO L231 Difference]: Finished difference. Result has 86 places, 101 transitions, 714 flow [2024-06-28 01:33:00,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=714, PETRI_PLACES=86, PETRI_TRANSITIONS=101} [2024-06-28 01:33:00,006 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-06-28 01:33:00,006 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 101 transitions, 714 flow [2024-06-28 01:33:00,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:00,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:00,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:00,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:33:00,007 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:00,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:00,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1186467149, now seen corresponding path program 3 times [2024-06-28 01:33:00,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:00,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533567797] [2024-06-28 01:33:00,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:00,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:00,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:00,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533567797] [2024-06-28 01:33:00,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533567797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:00,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:00,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:00,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838206767] [2024-06-28 01:33:00,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:00,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:00,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:00,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:00,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:00,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:00,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 101 transitions, 714 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:00,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:00,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:00,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:01,845 INFO L124 PetriNetUnfolderBase]: 5748/9272 cut-off events. [2024-06-28 01:33:01,845 INFO L125 PetriNetUnfolderBase]: For 32077/32089 co-relation queries the response was YES. [2024-06-28 01:33:01,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30486 conditions, 9272 events. 5748/9272 cut-off events. For 32077/32089 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 60232 event pairs, 2837 based on Foata normal form. 10/9009 useless extension candidates. Maximal degree in co-relation 30452. Up to 8097 conditions per place. [2024-06-28 01:33:01,887 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 86 selfloop transitions, 33 changer transitions 0/130 dead transitions. [2024-06-28 01:33:01,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 130 transitions, 1078 flow [2024-06-28 01:33:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:33:01,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-06-28 01:33:01,889 INFO L175 Difference]: Start difference. First operand has 86 places, 101 transitions, 714 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:33:01,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 130 transitions, 1078 flow [2024-06-28 01:33:01,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 130 transitions, 1033 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:01,903 INFO L231 Difference]: Finished difference. Result has 89 places, 104 transitions, 783 flow [2024-06-28 01:33:01,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=783, PETRI_PLACES=89, PETRI_TRANSITIONS=104} [2024-06-28 01:33:01,905 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-06-28 01:33:01,905 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 104 transitions, 783 flow [2024-06-28 01:33:01,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:01,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:01,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:01,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:33:01,906 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:01,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:01,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1067588149, now seen corresponding path program 1 times [2024-06-28 01:33:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:01,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318185284] [2024-06-28 01:33:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:01,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:02,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:02,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318185284] [2024-06-28 01:33:02,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318185284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:02,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:02,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:02,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44616879] [2024-06-28 01:33:02,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:02,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:02,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:02,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:02,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:02,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:02,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 104 transitions, 783 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:02,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:02,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:02,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:03,872 INFO L124 PetriNetUnfolderBase]: 5227/8571 cut-off events. [2024-06-28 01:33:03,872 INFO L125 PetriNetUnfolderBase]: For 34795/34795 co-relation queries the response was YES. [2024-06-28 01:33:03,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29249 conditions, 8571 events. 5227/8571 cut-off events. For 34795/34795 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 56027 event pairs, 2643 based on Foata normal form. 2/8309 useless extension candidates. Maximal degree in co-relation 29214. Up to 7399 conditions per place. [2024-06-28 01:33:03,928 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 116 selfloop transitions, 16 changer transitions 0/142 dead transitions. [2024-06-28 01:33:03,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 142 transitions, 1203 flow [2024-06-28 01:33:03,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:33:03,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:33:03,931 INFO L175 Difference]: Start difference. First operand has 89 places, 104 transitions, 783 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:33:03,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 142 transitions, 1203 flow [2024-06-28 01:33:03,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 142 transitions, 1115 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:03,949 INFO L231 Difference]: Finished difference. Result has 92 places, 107 transitions, 771 flow [2024-06-28 01:33:03,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=771, PETRI_PLACES=92, PETRI_TRANSITIONS=107} [2024-06-28 01:33:03,949 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-06-28 01:33:03,949 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 107 transitions, 771 flow [2024-06-28 01:33:03,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:03,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:03,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:03,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:33:03,950 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:03,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:03,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1869433467, now seen corresponding path program 1 times [2024-06-28 01:33:03,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:03,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942708171] [2024-06-28 01:33:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:03,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:04,770 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 01:33:04,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:04,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942708171] [2024-06-28 01:33:04,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942708171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:04,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:04,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:04,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286983086] [2024-06-28 01:33:04,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:04,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:04,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:04,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:04,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 107 transitions, 771 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:04,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:04,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:04,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:05,947 INFO L124 PetriNetUnfolderBase]: 5819/9424 cut-off events. [2024-06-28 01:33:05,947 INFO L125 PetriNetUnfolderBase]: For 46303/46311 co-relation queries the response was YES. [2024-06-28 01:33:05,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33625 conditions, 9424 events. 5819/9424 cut-off events. For 46303/46311 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 61561 event pairs, 2493 based on Foata normal form. 12/9143 useless extension candidates. Maximal degree in co-relation 33589. Up to 8187 conditions per place. [2024-06-28 01:33:06,005 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 104 selfloop transitions, 37 changer transitions 0/152 dead transitions. [2024-06-28 01:33:06,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 152 transitions, 1238 flow [2024-06-28 01:33:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:06,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 01:33:06,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:33:06,013 INFO L175 Difference]: Start difference. First operand has 92 places, 107 transitions, 771 flow. Second operand 7 states and 182 transitions. [2024-06-28 01:33:06,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 152 transitions, 1238 flow [2024-06-28 01:33:06,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 152 transitions, 1188 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:06,036 INFO L231 Difference]: Finished difference. Result has 95 places, 116 transitions, 893 flow [2024-06-28 01:33:06,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=893, PETRI_PLACES=95, PETRI_TRANSITIONS=116} [2024-06-28 01:33:06,037 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2024-06-28 01:33:06,037 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 116 transitions, 893 flow [2024-06-28 01:33:06,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:06,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:06,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:06,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:33:06,037 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:06,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:06,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1869554367, now seen corresponding path program 2 times [2024-06-28 01:33:06,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:06,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078557289] [2024-06-28 01:33:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:06,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:06,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:06,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078557289] [2024-06-28 01:33:06,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078557289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:06,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:06,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:06,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186479932] [2024-06-28 01:33:06,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:06,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:06,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:06,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:06,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:06,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:06,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 116 transitions, 893 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:06,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:06,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:06,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:08,046 INFO L124 PetriNetUnfolderBase]: 5912/9516 cut-off events. [2024-06-28 01:33:08,047 INFO L125 PetriNetUnfolderBase]: For 58045/58053 co-relation queries the response was YES. [2024-06-28 01:33:08,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36745 conditions, 9516 events. 5912/9516 cut-off events. For 58045/58053 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 61625 event pairs, 2428 based on Foata normal form. 12/9226 useless extension candidates. Maximal degree in co-relation 36707. Up to 8201 conditions per place. [2024-06-28 01:33:08,108 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 112 selfloop transitions, 48 changer transitions 0/171 dead transitions. [2024-06-28 01:33:08,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 171 transitions, 1567 flow [2024-06-28 01:33:08,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:08,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:33:08,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228571428571429 [2024-06-28 01:33:08,110 INFO L175 Difference]: Start difference. First operand has 95 places, 116 transitions, 893 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:33:08,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 171 transitions, 1567 flow [2024-06-28 01:33:08,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 171 transitions, 1491 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:08,139 INFO L231 Difference]: Finished difference. Result has 100 places, 134 transitions, 1153 flow [2024-06-28 01:33:08,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1153, PETRI_PLACES=100, PETRI_TRANSITIONS=134} [2024-06-28 01:33:08,139 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2024-06-28 01:33:08,139 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 134 transitions, 1153 flow [2024-06-28 01:33:08,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:08,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:08,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:08,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:33:08,140 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:08,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:08,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1086175900, now seen corresponding path program 1 times [2024-06-28 01:33:08,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:08,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623846389] [2024-06-28 01:33:08,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:08,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:08,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:08,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623846389] [2024-06-28 01:33:08,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623846389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:08,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:08,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:08,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499388770] [2024-06-28 01:33:08,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:08,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:08,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:08,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:08,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:08,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:08,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 134 transitions, 1153 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:08,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:08,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:08,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:10,061 INFO L124 PetriNetUnfolderBase]: 6234/9870 cut-off events. [2024-06-28 01:33:10,061 INFO L125 PetriNetUnfolderBase]: For 68877/68877 co-relation queries the response was YES. [2024-06-28 01:33:10,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40021 conditions, 9870 events. 6234/9870 cut-off events. For 68877/68877 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 62439 event pairs, 2614 based on Foata normal form. 2/9605 useless extension candidates. Maximal degree in co-relation 39981. Up to 8740 conditions per place. [2024-06-28 01:33:10,107 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 121 selfloop transitions, 41 changer transitions 0/171 dead transitions. [2024-06-28 01:33:10,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 171 transitions, 1648 flow [2024-06-28 01:33:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:33:10,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-28 01:33:10,109 INFO L175 Difference]: Start difference. First operand has 100 places, 134 transitions, 1153 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:33:10,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 171 transitions, 1648 flow [2024-06-28 01:33:10,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 171 transitions, 1546 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:10,142 INFO L231 Difference]: Finished difference. Result has 103 places, 137 transitions, 1198 flow [2024-06-28 01:33:10,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1198, PETRI_PLACES=103, PETRI_TRANSITIONS=137} [2024-06-28 01:33:10,143 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-06-28 01:33:10,143 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 137 transitions, 1198 flow [2024-06-28 01:33:10,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:10,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:10,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:10,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:33:10,144 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:10,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:10,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1264496890, now seen corresponding path program 2 times [2024-06-28 01:33:10,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:10,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933852444] [2024-06-28 01:33:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:10,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:11,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:11,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933852444] [2024-06-28 01:33:11,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933852444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:11,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:11,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:11,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2830482] [2024-06-28 01:33:11,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:11,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:11,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:11,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:11,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 137 transitions, 1198 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:11,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:11,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:11,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:12,236 INFO L124 PetriNetUnfolderBase]: 6268/9919 cut-off events. [2024-06-28 01:33:12,237 INFO L125 PetriNetUnfolderBase]: For 77487/77499 co-relation queries the response was YES. [2024-06-28 01:33:12,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41308 conditions, 9919 events. 6268/9919 cut-off events. For 77487/77499 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 62854 event pairs, 2494 based on Foata normal form. 10/9659 useless extension candidates. Maximal degree in co-relation 41267. Up to 8693 conditions per place. [2024-06-28 01:33:12,302 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 117 selfloop transitions, 55 changer transitions 0/181 dead transitions. [2024-06-28 01:33:12,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 181 transitions, 1841 flow [2024-06-28 01:33:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:33:12,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-06-28 01:33:12,303 INFO L175 Difference]: Start difference. First operand has 103 places, 137 transitions, 1198 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:33:12,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 181 transitions, 1841 flow [2024-06-28 01:33:12,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 181 transitions, 1738 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:12,340 INFO L231 Difference]: Finished difference. Result has 106 places, 143 transitions, 1315 flow [2024-06-28 01:33:12,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1315, PETRI_PLACES=106, PETRI_TRANSITIONS=143} [2024-06-28 01:33:12,341 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-28 01:33:12,341 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 143 transitions, 1315 flow [2024-06-28 01:33:12,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:12,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:12,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:12,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:33:12,342 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:12,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:12,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1264229980, now seen corresponding path program 3 times [2024-06-28 01:33:12,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:12,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636775053] [2024-06-28 01:33:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:12,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:13,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:13,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:13,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636775053] [2024-06-28 01:33:13,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636775053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:13,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:13,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:13,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824907212] [2024-06-28 01:33:13,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:13,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:13,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:13,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:13,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:13,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:13,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 143 transitions, 1315 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:13,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:13,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:13,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:14,310 INFO L124 PetriNetUnfolderBase]: 6263/9903 cut-off events. [2024-06-28 01:33:14,311 INFO L125 PetriNetUnfolderBase]: For 87355/87367 co-relation queries the response was YES. [2024-06-28 01:33:14,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42599 conditions, 9903 events. 6263/9903 cut-off events. For 87355/87367 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 62649 event pairs, 2463 based on Foata normal form. 10/9648 useless extension candidates. Maximal degree in co-relation 42557. Up to 8688 conditions per place. [2024-06-28 01:33:14,373 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 123 selfloop transitions, 47 changer transitions 0/179 dead transitions. [2024-06-28 01:33:14,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 179 transitions, 1802 flow [2024-06-28 01:33:14,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:14,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:33:14,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942857142857143 [2024-06-28 01:33:14,374 INFO L175 Difference]: Start difference. First operand has 106 places, 143 transitions, 1315 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:33:14,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 179 transitions, 1802 flow [2024-06-28 01:33:14,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 179 transitions, 1690 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:14,425 INFO L231 Difference]: Finished difference. Result has 109 places, 143 transitions, 1305 flow [2024-06-28 01:33:14,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1305, PETRI_PLACES=109, PETRI_TRANSITIONS=143} [2024-06-28 01:33:14,426 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 53 predicate places. [2024-06-28 01:33:14,426 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 143 transitions, 1305 flow [2024-06-28 01:33:14,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:14,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:14,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:14,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:33:14,427 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:14,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1264229763, now seen corresponding path program 3 times [2024-06-28 01:33:14,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:14,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408921573] [2024-06-28 01:33:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:14,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:15,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:15,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408921573] [2024-06-28 01:33:15,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408921573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:15,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:15,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:15,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969798746] [2024-06-28 01:33:15,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:15,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:15,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:15,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:15,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 143 transitions, 1305 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:15,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:15,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:15,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:16,377 INFO L124 PetriNetUnfolderBase]: 5931/9627 cut-off events. [2024-06-28 01:33:16,377 INFO L125 PetriNetUnfolderBase]: For 89727/89782 co-relation queries the response was YES. [2024-06-28 01:33:16,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41323 conditions, 9627 events. 5931/9627 cut-off events. For 89727/89782 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 63071 event pairs, 2286 based on Foata normal form. 13/9339 useless extension candidates. Maximal degree in co-relation 41279. Up to 8153 conditions per place. [2024-06-28 01:33:16,435 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 124 selfloop transitions, 59 changer transitions 0/197 dead transitions. [2024-06-28 01:33:16,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 197 transitions, 2107 flow [2024-06-28 01:33:16,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:16,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 01:33:16,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:33:16,436 INFO L175 Difference]: Start difference. First operand has 109 places, 143 transitions, 1305 flow. Second operand 7 states and 182 transitions. [2024-06-28 01:33:16,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 197 transitions, 2107 flow [2024-06-28 01:33:16,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 197 transitions, 1979 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:16,487 INFO L231 Difference]: Finished difference. Result has 112 places, 161 transitions, 1609 flow [2024-06-28 01:33:16,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1609, PETRI_PLACES=112, PETRI_TRANSITIONS=161} [2024-06-28 01:33:16,487 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2024-06-28 01:33:16,487 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 161 transitions, 1609 flow [2024-06-28 01:33:16,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:16,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:16,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:16,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:33:16,488 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:16,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:16,488 INFO L85 PathProgramCache]: Analyzing trace with hash 796413457, now seen corresponding path program 1 times [2024-06-28 01:33:16,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:16,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045411352] [2024-06-28 01:33:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:16,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:17,005 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 01:33:17,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:17,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045411352] [2024-06-28 01:33:17,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045411352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:17,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:17,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:33:17,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003211984] [2024-06-28 01:33:17,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:17,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:33:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:17,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:33:17,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:33:17,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:17,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 161 transitions, 1609 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:17,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:17,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:17,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:18,217 INFO L124 PetriNetUnfolderBase]: 5908/9871 cut-off events. [2024-06-28 01:33:18,218 INFO L125 PetriNetUnfolderBase]: For 106207/106277 co-relation queries the response was YES. [2024-06-28 01:33:18,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44109 conditions, 9871 events. 5908/9871 cut-off events. For 106207/106277 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 66548 event pairs, 2511 based on Foata normal form. 7/9499 useless extension candidates. Maximal degree in co-relation 44062. Up to 8387 conditions per place. [2024-06-28 01:33:18,273 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 150 selfloop transitions, 15 changer transitions 0/179 dead transitions. [2024-06-28 01:33:18,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 179 transitions, 2019 flow [2024-06-28 01:33:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:33:18,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:33:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-28 01:33:18,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492 [2024-06-28 01:33:18,275 INFO L175 Difference]: Start difference. First operand has 112 places, 161 transitions, 1609 flow. Second operand 5 states and 123 transitions. [2024-06-28 01:33:18,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 179 transitions, 2019 flow [2024-06-28 01:33:18,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 179 transitions, 1891 flow, removed 52 selfloop flow, removed 2 redundant places. [2024-06-28 01:33:18,348 INFO L231 Difference]: Finished difference. Result has 115 places, 164 transitions, 1549 flow [2024-06-28 01:33:18,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=110, 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=5, PETRI_FLOW=1549, PETRI_PLACES=115, PETRI_TRANSITIONS=164} [2024-06-28 01:33:18,348 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2024-06-28 01:33:18,348 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 164 transitions, 1549 flow [2024-06-28 01:33:18,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:18,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:18,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:18,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:33:18,349 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:18,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:18,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2117772302, now seen corresponding path program 1 times [2024-06-28 01:33:18,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:18,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258911038] [2024-06-28 01:33:18,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:18,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:19,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:19,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258911038] [2024-06-28 01:33:19,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258911038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:19,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:19,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:19,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480738127] [2024-06-28 01:33:19,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:19,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:19,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:19,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:19,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:19,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:19,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 164 transitions, 1549 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:19,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:19,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:19,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:20,762 INFO L124 PetriNetUnfolderBase]: 5933/9587 cut-off events. [2024-06-28 01:33:20,762 INFO L125 PetriNetUnfolderBase]: For 109619/109679 co-relation queries the response was YES. [2024-06-28 01:33:20,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44898 conditions, 9587 events. 5933/9587 cut-off events. For 109619/109679 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 62393 event pairs, 2431 based on Foata normal form. 10/9316 useless extension candidates. Maximal degree in co-relation 44849. Up to 8309 conditions per place. [2024-06-28 01:33:20,828 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 149 selfloop transitions, 39 changer transitions 0/202 dead transitions. [2024-06-28 01:33:20,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 202 transitions, 2107 flow [2024-06-28 01:33:20,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 01:33:20,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171428571428571 [2024-06-28 01:33:20,830 INFO L175 Difference]: Start difference. First operand has 115 places, 164 transitions, 1549 flow. Second operand 7 states and 181 transitions. [2024-06-28 01:33:20,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 202 transitions, 2107 flow [2024-06-28 01:33:20,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 202 transitions, 1987 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:20,917 INFO L231 Difference]: Finished difference. Result has 119 places, 167 transitions, 1587 flow [2024-06-28 01:33:20,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1587, PETRI_PLACES=119, PETRI_TRANSITIONS=167} [2024-06-28 01:33:20,918 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-28 01:33:20,918 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 167 transitions, 1587 flow [2024-06-28 01:33:20,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:20,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:20,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:20,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:33:20,919 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:20,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:20,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2117863628, now seen corresponding path program 1 times [2024-06-28 01:33:20,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:20,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787190809] [2024-06-28 01:33:20,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:20,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:21,716 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 01:33:21,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:21,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787190809] [2024-06-28 01:33:21,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787190809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:21,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:21,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:21,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190510838] [2024-06-28 01:33:21,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:21,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:21,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:21,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:21,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:21,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:21,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 167 transitions, 1587 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:21,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:21,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:21,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:23,204 INFO L124 PetriNetUnfolderBase]: 6287/9972 cut-off events. [2024-06-28 01:33:23,204 INFO L125 PetriNetUnfolderBase]: For 115660/115660 co-relation queries the response was YES. [2024-06-28 01:33:23,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47019 conditions, 9972 events. 6287/9972 cut-off events. For 115660/115660 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 63185 event pairs, 2569 based on Foata normal form. 4/9711 useless extension candidates. Maximal degree in co-relation 46969. Up to 8765 conditions per place. [2024-06-28 01:33:23,268 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 165 selfloop transitions, 41 changer transitions 0/215 dead transitions. [2024-06-28 01:33:23,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 215 transitions, 2217 flow [2024-06-28 01:33:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:23,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:23,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:33:23,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:33:23,270 INFO L175 Difference]: Start difference. First operand has 119 places, 167 transitions, 1587 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:33:23,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 215 transitions, 2217 flow [2024-06-28 01:33:23,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 215 transitions, 2127 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:23,339 INFO L231 Difference]: Finished difference. Result has 122 places, 171 transitions, 1656 flow [2024-06-28 01:33:23,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1656, PETRI_PLACES=122, PETRI_TRANSITIONS=171} [2024-06-28 01:33:23,339 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 66 predicate places. [2024-06-28 01:33:23,340 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 171 transitions, 1656 flow [2024-06-28 01:33:23,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:23,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:23,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:23,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:33:23,340 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:23,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2121618038, now seen corresponding path program 2 times [2024-06-28 01:33:23,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:23,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941360912] [2024-06-28 01:33:23,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:23,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:24,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:24,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:24,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941360912] [2024-06-28 01:33:24,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941360912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:24,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:24,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:24,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346575416] [2024-06-28 01:33:24,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:24,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:24,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:24,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:24,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:24,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:24,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 171 transitions, 1656 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:24,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:24,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:24,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:25,710 INFO L124 PetriNetUnfolderBase]: 6384/10103 cut-off events. [2024-06-28 01:33:25,710 INFO L125 PetriNetUnfolderBase]: For 131515/131515 co-relation queries the response was YES. [2024-06-28 01:33:25,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49680 conditions, 10103 events. 6384/10103 cut-off events. For 131515/131515 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 63815 event pairs, 2502 based on Foata normal form. 4/9843 useless extension candidates. Maximal degree in co-relation 49629. Up to 8684 conditions per place. [2024-06-28 01:33:25,764 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 156 selfloop transitions, 63 changer transitions 0/228 dead transitions. [2024-06-28 01:33:25,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 228 transitions, 2509 flow [2024-06-28 01:33:25,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:25,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:33:25,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505 [2024-06-28 01:33:25,773 INFO L175 Difference]: Start difference. First operand has 122 places, 171 transitions, 1656 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:33:25,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 228 transitions, 2509 flow [2024-06-28 01:33:25,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 228 transitions, 2380 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:25,846 INFO L231 Difference]: Finished difference. Result has 125 places, 183 transitions, 1873 flow [2024-06-28 01:33:25,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1873, PETRI_PLACES=125, PETRI_TRANSITIONS=183} [2024-06-28 01:33:25,846 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-06-28 01:33:25,846 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 183 transitions, 1873 flow [2024-06-28 01:33:25,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:25,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:25,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:25,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:33:25,847 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:25,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash -688284438, now seen corresponding path program 1 times [2024-06-28 01:33:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:25,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757405575] [2024-06-28 01:33:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:25,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:26,709 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 01:33:26,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:26,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757405575] [2024-06-28 01:33:26,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757405575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:26,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:26,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:26,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100478575] [2024-06-28 01:33:26,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:26,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:26,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:26,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:26,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:26,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:26,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 183 transitions, 1873 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:26,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:26,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:26,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:28,016 INFO L124 PetriNetUnfolderBase]: 6410/10145 cut-off events. [2024-06-28 01:33:28,016 INFO L125 PetriNetUnfolderBase]: For 149115/149115 co-relation queries the response was YES. [2024-06-28 01:33:28,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52082 conditions, 10145 events. 6410/10145 cut-off events. For 149115/149115 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 64068 event pairs, 2473 based on Foata normal form. 2/9884 useless extension candidates. Maximal degree in co-relation 52029. Up to 8964 conditions per place. [2024-06-28 01:33:28,209 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 173 selfloop transitions, 47 changer transitions 0/229 dead transitions. [2024-06-28 01:33:28,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 229 transitions, 2554 flow [2024-06-28 01:33:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:28,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:28,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:33:28,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485 [2024-06-28 01:33:28,210 INFO L175 Difference]: Start difference. First operand has 125 places, 183 transitions, 1873 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:33:28,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 229 transitions, 2554 flow [2024-06-28 01:33:28,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 229 transitions, 2416 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:28,297 INFO L231 Difference]: Finished difference. Result has 129 places, 186 transitions, 1909 flow [2024-06-28 01:33:28,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1740, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1909, PETRI_PLACES=129, PETRI_TRANSITIONS=186} [2024-06-28 01:33:28,298 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 73 predicate places. [2024-06-28 01:33:28,298 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 186 transitions, 1909 flow [2024-06-28 01:33:28,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:28,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:28,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:28,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:33:28,298 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:28,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:28,299 INFO L85 PathProgramCache]: Analyzing trace with hash -688291196, now seen corresponding path program 3 times [2024-06-28 01:33:28,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:28,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45212040] [2024-06-28 01:33:28,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:28,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:29,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:29,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:29,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45212040] [2024-06-28 01:33:29,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45212040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:29,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:29,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:29,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419938238] [2024-06-28 01:33:29,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:29,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:29,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:29,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:29,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:29,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:29,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 186 transitions, 1909 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:29,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:29,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:29,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:30,541 INFO L124 PetriNetUnfolderBase]: 6429/10163 cut-off events. [2024-06-28 01:33:30,541 INFO L125 PetriNetUnfolderBase]: For 163118/163118 co-relation queries the response was YES. [2024-06-28 01:33:30,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53448 conditions, 10163 events. 6429/10163 cut-off events. For 163118/163118 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 64145 event pairs, 2460 based on Foata normal form. 4/9906 useless extension candidates. Maximal degree in co-relation 53393. Up to 8742 conditions per place. [2024-06-28 01:33:30,629 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 161 selfloop transitions, 65 changer transitions 0/235 dead transitions. [2024-06-28 01:33:30,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 235 transitions, 2679 flow [2024-06-28 01:33:30,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:33:30,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-06-28 01:33:30,630 INFO L175 Difference]: Start difference. First operand has 129 places, 186 transitions, 1909 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:33:30,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 235 transitions, 2679 flow [2024-06-28 01:33:30,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 235 transitions, 2546 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:30,740 INFO L231 Difference]: Finished difference. Result has 131 places, 190 transitions, 1985 flow [2024-06-28 01:33:30,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1985, PETRI_PLACES=131, PETRI_TRANSITIONS=190} [2024-06-28 01:33:30,741 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 75 predicate places. [2024-06-28 01:33:30,741 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 190 transitions, 1985 flow [2024-06-28 01:33:30,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:30,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:30,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:30,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:33:30,742 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:30,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:30,742 INFO L85 PathProgramCache]: Analyzing trace with hash 536424498, now seen corresponding path program 4 times [2024-06-28 01:33:30,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:30,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525418906] [2024-06-28 01:33:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:30,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:31,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:31,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525418906] [2024-06-28 01:33:31,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525418906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:31,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:31,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:31,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637595071] [2024-06-28 01:33:31,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:31,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:31,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:31,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:31,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:31,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:31,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 190 transitions, 1985 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:31,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:31,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:31,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:33,108 INFO L124 PetriNetUnfolderBase]: 6526/10330 cut-off events. [2024-06-28 01:33:33,108 INFO L125 PetriNetUnfolderBase]: For 173172/173178 co-relation queries the response was YES. [2024-06-28 01:33:33,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54981 conditions, 10330 events. 6526/10330 cut-off events. For 173172/173178 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 65457 event pairs, 2336 based on Foata normal form. 8/10072 useless extension candidates. Maximal degree in co-relation 54925. Up to 8654 conditions per place. [2024-06-28 01:33:33,191 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 163 selfloop transitions, 94 changer transitions 0/266 dead transitions. [2024-06-28 01:33:33,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 266 transitions, 3357 flow [2024-06-28 01:33:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:33,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:33,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:33:33,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225 [2024-06-28 01:33:33,196 INFO L175 Difference]: Start difference. First operand has 131 places, 190 transitions, 1985 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:33:33,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 266 transitions, 3357 flow [2024-06-28 01:33:33,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 266 transitions, 3215 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:33,350 INFO L231 Difference]: Finished difference. Result has 137 places, 215 transitions, 2542 flow [2024-06-28 01:33:33,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2542, PETRI_PLACES=137, PETRI_TRANSITIONS=215} [2024-06-28 01:33:33,351 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2024-06-28 01:33:33,351 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 215 transitions, 2542 flow [2024-06-28 01:33:33,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:33,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:33,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:33,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:33:33,351 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:33,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:33,352 INFO L85 PathProgramCache]: Analyzing trace with hash 536424746, now seen corresponding path program 2 times [2024-06-28 01:33:33,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:33,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525677930] [2024-06-28 01:33:33,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:33,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:34,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:34,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525677930] [2024-06-28 01:33:34,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525677930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:34,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:34,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:34,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113613654] [2024-06-28 01:33:34,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:34,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:34,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:34,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:34,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 215 transitions, 2542 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:34,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:34,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:34,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:35,681 INFO L124 PetriNetUnfolderBase]: 6560/10371 cut-off events. [2024-06-28 01:33:35,681 INFO L125 PetriNetUnfolderBase]: For 197236/197248 co-relation queries the response was YES. [2024-06-28 01:33:35,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58289 conditions, 10371 events. 6560/10371 cut-off events. For 197236/197248 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 65630 event pairs, 2403 based on Foata normal form. 10/10113 useless extension candidates. Maximal degree in co-relation 58229. Up to 9010 conditions per place. [2024-06-28 01:33:35,768 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 195 selfloop transitions, 69 changer transitions 0/273 dead transitions. [2024-06-28 01:33:35,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 273 transitions, 3599 flow [2024-06-28 01:33:35,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:35,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:33:35,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025 [2024-06-28 01:33:35,769 INFO L175 Difference]: Start difference. First operand has 137 places, 215 transitions, 2542 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:33:35,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 273 transitions, 3599 flow [2024-06-28 01:33:35,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 273 transitions, 3453 flow, removed 61 selfloop flow, removed 2 redundant places. [2024-06-28 01:33:35,959 INFO L231 Difference]: Finished difference. Result has 143 places, 221 transitions, 2699 flow [2024-06-28 01:33:35,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2406, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2699, PETRI_PLACES=143, PETRI_TRANSITIONS=221} [2024-06-28 01:33:35,960 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 87 predicate places. [2024-06-28 01:33:35,960 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 221 transitions, 2699 flow [2024-06-28 01:33:35,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:35,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:35,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:35,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:33:35,961 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:35,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:35,961 INFO L85 PathProgramCache]: Analyzing trace with hash -355756718, now seen corresponding path program 5 times [2024-06-28 01:33:35,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:35,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168949271] [2024-06-28 01:33:35,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:35,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:36,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:36,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168949271] [2024-06-28 01:33:36,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168949271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:36,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:36,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:36,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698922662] [2024-06-28 01:33:36,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:36,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:36,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:36,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:36,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:36,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:36,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 221 transitions, 2699 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:36,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:36,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:36,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:38,295 INFO L124 PetriNetUnfolderBase]: 6550/10394 cut-off events. [2024-06-28 01:33:38,295 INFO L125 PetriNetUnfolderBase]: For 209213/209219 co-relation queries the response was YES. [2024-06-28 01:33:38,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59289 conditions, 10394 events. 6550/10394 cut-off events. For 209213/209219 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 66151 event pairs, 2334 based on Foata normal form. 8/10128 useless extension candidates. Maximal degree in co-relation 59227. Up to 8693 conditions per place. [2024-06-28 01:33:38,376 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 164 selfloop transitions, 102 changer transitions 0/275 dead transitions. [2024-06-28 01:33:38,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 275 transitions, 3748 flow [2024-06-28 01:33:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:33:38,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:33:38,378 INFO L175 Difference]: Start difference. First operand has 143 places, 221 transitions, 2699 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:33:38,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 275 transitions, 3748 flow [2024-06-28 01:33:38,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 275 transitions, 3523 flow, removed 82 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:38,617 INFO L231 Difference]: Finished difference. Result has 148 places, 229 transitions, 2869 flow [2024-06-28 01:33:38,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2869, PETRI_PLACES=148, PETRI_TRANSITIONS=229} [2024-06-28 01:33:38,618 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 92 predicate places. [2024-06-28 01:33:38,618 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 229 transitions, 2869 flow [2024-06-28 01:33:38,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:38,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:38,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:38,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:33:38,619 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:38,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:38,619 INFO L85 PathProgramCache]: Analyzing trace with hash 544698708, now seen corresponding path program 6 times [2024-06-28 01:33:38,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:38,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758328655] [2024-06-28 01:33:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:38,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:39,489 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 01:33:39,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:39,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758328655] [2024-06-28 01:33:39,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758328655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:39,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:39,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:39,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59403251] [2024-06-28 01:33:39,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:39,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:39,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:39,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:39,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:39,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:39,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 229 transitions, 2869 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:39,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:39,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:39,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:41,139 INFO L124 PetriNetUnfolderBase]: 6540/10372 cut-off events. [2024-06-28 01:33:41,140 INFO L125 PetriNetUnfolderBase]: For 217183/217189 co-relation queries the response was YES. [2024-06-28 01:33:41,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59903 conditions, 10372 events. 6540/10372 cut-off events. For 217183/217189 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 65954 event pairs, 2311 based on Foata normal form. 8/10109 useless extension candidates. Maximal degree in co-relation 59838. Up to 8685 conditions per place. [2024-06-28 01:33:41,214 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 157 selfloop transitions, 107 changer transitions 0/273 dead transitions. [2024-06-28 01:33:41,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 273 transitions, 3665 flow [2024-06-28 01:33:41,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:41,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:33:41,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505 [2024-06-28 01:33:41,216 INFO L175 Difference]: Start difference. First operand has 148 places, 229 transitions, 2869 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:33:41,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 273 transitions, 3665 flow [2024-06-28 01:33:41,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 273 transitions, 3393 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:41,447 INFO L231 Difference]: Finished difference. Result has 152 places, 229 transitions, 2821 flow [2024-06-28 01:33:41,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2597, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2821, PETRI_PLACES=152, PETRI_TRANSITIONS=229} [2024-06-28 01:33:41,447 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-06-28 01:33:41,447 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 229 transitions, 2821 flow [2024-06-28 01:33:41,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:41,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:41,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:41,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:33:41,448 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:41,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash 544698956, now seen corresponding path program 3 times [2024-06-28 01:33:41,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:41,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173180732] [2024-06-28 01:33:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:41,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:42,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:42,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173180732] [2024-06-28 01:33:42,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173180732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:42,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:42,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:42,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73182049] [2024-06-28 01:33:42,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:42,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:42,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:42,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:42,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:42,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:42,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 229 transitions, 2821 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:42,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:42,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:42,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:43,869 INFO L124 PetriNetUnfolderBase]: 6566/10392 cut-off events. [2024-06-28 01:33:43,869 INFO L125 PetriNetUnfolderBase]: For 224199/224211 co-relation queries the response was YES. [2024-06-28 01:33:43,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60381 conditions, 10392 events. 6566/10392 cut-off events. For 224199/224211 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 65902 event pairs, 2396 based on Foata normal form. 10/10133 useless extension candidates. Maximal degree in co-relation 60315. Up to 9009 conditions per place. [2024-06-28 01:33:43,963 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 196 selfloop transitions, 79 changer transitions 0/284 dead transitions. [2024-06-28 01:33:43,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 284 transitions, 3840 flow [2024-06-28 01:33:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:43,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:33:43,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:33:43,964 INFO L175 Difference]: Start difference. First operand has 152 places, 229 transitions, 2821 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:33:43,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 284 transitions, 3840 flow [2024-06-28 01:33:44,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 284 transitions, 3601 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:44,267 INFO L231 Difference]: Finished difference. Result has 154 places, 232 transitions, 2837 flow [2024-06-28 01:33:44,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2837, PETRI_PLACES=154, PETRI_TRANSITIONS=232} [2024-06-28 01:33:44,268 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 98 predicate places. [2024-06-28 01:33:44,268 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 232 transitions, 2837 flow [2024-06-28 01:33:44,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:44,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:44,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:44,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:33:44,268 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:44,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:44,269 INFO L85 PathProgramCache]: Analyzing trace with hash 544995626, now seen corresponding path program 4 times [2024-06-28 01:33:44,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:44,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613140515] [2024-06-28 01:33:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:44,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:45,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:45,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613140515] [2024-06-28 01:33:45,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613140515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:45,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:45,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:45,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903632658] [2024-06-28 01:33:45,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:45,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:45,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:45,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:45,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:45,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 232 transitions, 2837 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:45,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:45,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:45,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:46,624 INFO L124 PetriNetUnfolderBase]: 6561/10393 cut-off events. [2024-06-28 01:33:46,625 INFO L125 PetriNetUnfolderBase]: For 231064/231076 co-relation queries the response was YES. [2024-06-28 01:33:46,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60417 conditions, 10393 events. 6561/10393 cut-off events. For 231064/231076 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 66023 event pairs, 2395 based on Foata normal form. 10/10131 useless extension candidates. Maximal degree in co-relation 60350. Up to 9004 conditions per place. [2024-06-28 01:33:46,724 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 189 selfloop transitions, 83 changer transitions 0/281 dead transitions. [2024-06-28 01:33:46,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 281 transitions, 3640 flow [2024-06-28 01:33:46,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:33:46,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925 [2024-06-28 01:33:46,725 INFO L175 Difference]: Start difference. First operand has 154 places, 232 transitions, 2837 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:33:46,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 281 transitions, 3640 flow [2024-06-28 01:33:47,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 281 transitions, 3394 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:47,088 INFO L231 Difference]: Finished difference. Result has 156 places, 232 transitions, 2765 flow [2024-06-28 01:33:47,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2591, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2765, PETRI_PLACES=156, PETRI_TRANSITIONS=232} [2024-06-28 01:33:47,089 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 100 predicate places. [2024-06-28 01:33:47,089 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 232 transitions, 2765 flow [2024-06-28 01:33:47,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:47,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:47,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:47,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:33:47,090 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:47,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:47,090 INFO L85 PathProgramCache]: Analyzing trace with hash 545006538, now seen corresponding path program 1 times [2024-06-28 01:33:47,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:47,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019112094] [2024-06-28 01:33:47,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:47,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:48,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:48,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019112094] [2024-06-28 01:33:48,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019112094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:48,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:48,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:48,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030179572] [2024-06-28 01:33:48,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:48,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:48,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:48,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:48,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:48,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:48,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 232 transitions, 2765 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:48,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:48,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:48,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:50,102 INFO L124 PetriNetUnfolderBase]: 6562/10614 cut-off events. [2024-06-28 01:33:50,103 INFO L125 PetriNetUnfolderBase]: For 236731/236731 co-relation queries the response was YES. [2024-06-28 01:33:50,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60514 conditions, 10614 events. 6562/10614 cut-off events. For 236731/236731 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 69042 event pairs, 2418 based on Foata normal form. 2/10294 useless extension candidates. Maximal degree in co-relation 60446. Up to 9221 conditions per place. [2024-06-28 01:33:50,198 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 253 selfloop transitions, 29 changer transitions 0/291 dead transitions. [2024-06-28 01:33:50,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 291 transitions, 3656 flow [2024-06-28 01:33:50,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:50,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 01:33:50,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4822222222222222 [2024-06-28 01:33:50,199 INFO L175 Difference]: Start difference. First operand has 156 places, 232 transitions, 2765 flow. Second operand 9 states and 217 transitions. [2024-06-28 01:33:50,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 291 transitions, 3656 flow [2024-06-28 01:33:50,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 291 transitions, 3474 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:50,505 INFO L231 Difference]: Finished difference. Result has 159 places, 239 transitions, 2760 flow [2024-06-28 01:33:50,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2587, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2760, PETRI_PLACES=159, PETRI_TRANSITIONS=239} [2024-06-28 01:33:50,506 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 103 predicate places. [2024-06-28 01:33:50,506 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 239 transitions, 2760 flow [2024-06-28 01:33:50,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:50,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:50,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:50,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:33:50,507 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:50,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:50,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1129246242, now seen corresponding path program 1 times [2024-06-28 01:33:50,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:50,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219826696] [2024-06-28 01:33:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:50,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:51,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:51,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219826696] [2024-06-28 01:33:51,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219826696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:51,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:51,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:51,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135773395] [2024-06-28 01:33:51,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:51,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:51,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:51,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:51,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:51,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:33:51,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 239 transitions, 2760 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:51,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:51,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:33:51,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:52,945 INFO L124 PetriNetUnfolderBase]: 7241/11709 cut-off events. [2024-06-28 01:33:52,945 INFO L125 PetriNetUnfolderBase]: For 286506/286632 co-relation queries the response was YES. [2024-06-28 01:33:53,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67674 conditions, 11709 events. 7241/11709 cut-off events. For 286506/286632 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 77212 event pairs, 2833 based on Foata normal form. 31/11363 useless extension candidates. Maximal degree in co-relation 67604. Up to 10146 conditions per place. [2024-06-28 01:33:53,054 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 218 selfloop transitions, 18 changer transitions 0/263 dead transitions. [2024-06-28 01:33:53,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 263 transitions, 3366 flow [2024-06-28 01:33:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:53,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 01:33:53,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:33:53,056 INFO L175 Difference]: Start difference. First operand has 159 places, 239 transitions, 2760 flow. Second operand 6 states and 140 transitions. [2024-06-28 01:33:53,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 263 transitions, 3366 flow [2024-06-28 01:33:53,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 263 transitions, 3247 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:53,439 INFO L231 Difference]: Finished difference. Result has 159 places, 242 transitions, 2721 flow [2024-06-28 01:33:53,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2641, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2721, PETRI_PLACES=159, PETRI_TRANSITIONS=242} [2024-06-28 01:33:53,439 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 103 predicate places. [2024-06-28 01:33:53,439 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 242 transitions, 2721 flow [2024-06-28 01:33:53,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:53,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:53,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:53,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:33:53,440 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:53,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:53,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1646880066, now seen corresponding path program 1 times [2024-06-28 01:33:53,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:53,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770555430] [2024-06-28 01:33:53,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:53,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:54,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:54,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770555430] [2024-06-28 01:33:54,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770555430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:54,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:54,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:54,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954926221] [2024-06-28 01:33:54,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:54,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:54,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:54,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:54,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:54,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 242 transitions, 2721 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:54,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:54,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:54,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:56,565 INFO L124 PetriNetUnfolderBase]: 7470/11903 cut-off events. [2024-06-28 01:33:56,565 INFO L125 PetriNetUnfolderBase]: For 328481/328662 co-relation queries the response was YES. [2024-06-28 01:33:56,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72249 conditions, 11903 events. 7470/11903 cut-off events. For 328481/328662 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 78631 event pairs, 2642 based on Foata normal form. 37/11501 useless extension candidates. Maximal degree in co-relation 72178. Up to 10257 conditions per place. [2024-06-28 01:33:56,683 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 227 selfloop transitions, 49 changer transitions 0/306 dead transitions. [2024-06-28 01:33:56,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 306 transitions, 3680 flow [2024-06-28 01:33:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:33:56,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4911111111111111 [2024-06-28 01:33:56,684 INFO L175 Difference]: Start difference. First operand has 159 places, 242 transitions, 2721 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:33:56,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 306 transitions, 3680 flow [2024-06-28 01:33:57,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 306 transitions, 3626 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:57,010 INFO L231 Difference]: Finished difference. Result has 167 places, 262 transitions, 3059 flow [2024-06-28 01:33:57,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2667, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3059, PETRI_PLACES=167, PETRI_TRANSITIONS=262} [2024-06-28 01:33:57,010 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 111 predicate places. [2024-06-28 01:33:57,011 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 262 transitions, 3059 flow [2024-06-28 01:33:57,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:57,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:57,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:57,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:33:57,011 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:57,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:57,011 INFO L85 PathProgramCache]: Analyzing trace with hash 18794242, now seen corresponding path program 2 times [2024-06-28 01:33:57,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:57,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944569624] [2024-06-28 01:33:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:57,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:58,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:58,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:58,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944569624] [2024-06-28 01:33:58,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944569624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:58,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:58,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:58,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284070104] [2024-06-28 01:33:58,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:58,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:58,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:58,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:58,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:58,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:33:58,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 262 transitions, 3059 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:58,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:58,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:33:58,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:00,209 INFO L124 PetriNetUnfolderBase]: 7483/11993 cut-off events. [2024-06-28 01:34:00,209 INFO L125 PetriNetUnfolderBase]: For 344519/344636 co-relation queries the response was YES. [2024-06-28 01:34:00,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74217 conditions, 11993 events. 7483/11993 cut-off events. For 344519/344636 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 79610 event pairs, 2650 based on Foata normal form. 28/11635 useless extension candidates. Maximal degree in co-relation 74142. Up to 10254 conditions per place. [2024-06-28 01:34:00,338 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 223 selfloop transitions, 54 changer transitions 0/307 dead transitions. [2024-06-28 01:34:00,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 307 transitions, 3851 flow [2024-06-28 01:34:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:00,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:34:00,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:34:00,340 INFO L175 Difference]: Start difference. First operand has 167 places, 262 transitions, 3059 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:34:00,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 307 transitions, 3851 flow [2024-06-28 01:34:00,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 307 transitions, 3729 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-06-28 01:34:00,789 INFO L231 Difference]: Finished difference. Result has 173 places, 265 transitions, 3144 flow [2024-06-28 01:34:00,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2937, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3144, PETRI_PLACES=173, PETRI_TRANSITIONS=265} [2024-06-28 01:34:00,790 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 117 predicate places. [2024-06-28 01:34:00,790 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 265 transitions, 3144 flow [2024-06-28 01:34:00,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:00,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:00,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:00,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:34:00,790 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:00,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:00,791 INFO L85 PathProgramCache]: Analyzing trace with hash 18794397, now seen corresponding path program 1 times [2024-06-28 01:34:00,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:00,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317704319] [2024-06-28 01:34:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:00,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:01,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:01,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317704319] [2024-06-28 01:34:01,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317704319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:01,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:01,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:01,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422060857] [2024-06-28 01:34:01,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:01,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:01,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:01,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:01,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:01,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:01,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 265 transitions, 3144 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:01,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:01,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:01,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:03,837 INFO L124 PetriNetUnfolderBase]: 7850/12458 cut-off events. [2024-06-28 01:34:03,837 INFO L125 PetriNetUnfolderBase]: For 369163/369175 co-relation queries the response was YES. [2024-06-28 01:34:03,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77949 conditions, 12458 events. 7850/12458 cut-off events. For 369163/369175 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 81775 event pairs, 2771 based on Foata normal form. 2/12071 useless extension candidates. Maximal degree in co-relation 77872. Up to 10827 conditions per place. [2024-06-28 01:34:03,958 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 240 selfloop transitions, 59 changer transitions 0/310 dead transitions. [2024-06-28 01:34:03,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 310 transitions, 3970 flow [2024-06-28 01:34:03,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:03,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:03,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:34:03,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975 [2024-06-28 01:34:03,959 INFO L175 Difference]: Start difference. First operand has 173 places, 265 transitions, 3144 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:34:03,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 310 transitions, 3970 flow [2024-06-28 01:34:04,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 310 transitions, 3687 flow, removed 90 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:04,550 INFO L231 Difference]: Finished difference. Result has 175 places, 268 transitions, 3071 flow [2024-06-28 01:34:04,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2889, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3071, PETRI_PLACES=175, PETRI_TRANSITIONS=268} [2024-06-28 01:34:04,550 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 119 predicate places. [2024-06-28 01:34:04,550 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 268 transitions, 3071 flow [2024-06-28 01:34:04,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:04,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:04,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:04,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:34:04,551 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:04,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:04,551 INFO L85 PathProgramCache]: Analyzing trace with hash 21625534, now seen corresponding path program 1 times [2024-06-28 01:34:04,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:04,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711967241] [2024-06-28 01:34:04,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:04,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:05,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:05,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711967241] [2024-06-28 01:34:05,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711967241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:05,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:05,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:05,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654313410] [2024-06-28 01:34:05,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:05,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:05,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:05,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:05,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:05,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:05,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 268 transitions, 3071 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:05,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:05,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:05,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:07,581 INFO L124 PetriNetUnfolderBase]: 7870/12432 cut-off events. [2024-06-28 01:34:07,581 INFO L125 PetriNetUnfolderBase]: For 380820/380836 co-relation queries the response was YES. [2024-06-28 01:34:07,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78149 conditions, 12432 events. 7870/12432 cut-off events. For 380820/380836 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 81058 event pairs, 2690 based on Foata normal form. 8/12074 useless extension candidates. Maximal degree in co-relation 78071. Up to 10857 conditions per place. [2024-06-28 01:34:07,709 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 255 selfloop transitions, 57 changer transitions 0/323 dead transitions. [2024-06-28 01:34:07,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 323 transitions, 3986 flow [2024-06-28 01:34:07,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 01:34:07,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2024-06-28 01:34:07,711 INFO L175 Difference]: Start difference. First operand has 175 places, 268 transitions, 3071 flow. Second operand 9 states and 224 transitions. [2024-06-28 01:34:07,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 323 transitions, 3986 flow [2024-06-28 01:34:08,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 323 transitions, 3856 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:08,163 INFO L231 Difference]: Finished difference. Result has 178 places, 272 transitions, 3166 flow [2024-06-28 01:34:08,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3166, PETRI_PLACES=178, PETRI_TRANSITIONS=272} [2024-06-28 01:34:08,163 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 122 predicate places. [2024-06-28 01:34:08,163 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 272 transitions, 3166 flow [2024-06-28 01:34:08,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:08,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:08,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:08,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:34:08,164 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:08,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:08,164 INFO L85 PathProgramCache]: Analyzing trace with hash 137804482, now seen corresponding path program 3 times [2024-06-28 01:34:08,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:08,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440020355] [2024-06-28 01:34:08,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:08,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:09,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:09,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440020355] [2024-06-28 01:34:09,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440020355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:09,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:09,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:09,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557719146] [2024-06-28 01:34:09,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:09,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:09,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:09,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:09,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:09,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:09,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 272 transitions, 3166 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:09,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:09,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:09,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:11,530 INFO L124 PetriNetUnfolderBase]: 7528/12069 cut-off events. [2024-06-28 01:34:11,530 INFO L125 PetriNetUnfolderBase]: For 406790/406918 co-relation queries the response was YES. [2024-06-28 01:34:11,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78176 conditions, 12069 events. 7528/12069 cut-off events. For 406790/406918 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 80273 event pairs, 2575 based on Foata normal form. 50/11734 useless extension candidates. Maximal degree in co-relation 78097. Up to 10257 conditions per place. [2024-06-28 01:34:11,674 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 221 selfloop transitions, 65 changer transitions 0/317 dead transitions. [2024-06-28 01:34:11,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 317 transitions, 3996 flow [2024-06-28 01:34:11,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:34:11,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:34:11,676 INFO L175 Difference]: Start difference. First operand has 178 places, 272 transitions, 3166 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:34:11,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 317 transitions, 3996 flow [2024-06-28 01:34:12,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 317 transitions, 3801 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:12,142 INFO L231 Difference]: Finished difference. Result has 179 places, 275 transitions, 3209 flow [2024-06-28 01:34:12,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2971, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3209, PETRI_PLACES=179, PETRI_TRANSITIONS=275} [2024-06-28 01:34:12,143 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 123 predicate places. [2024-06-28 01:34:12,143 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 275 transitions, 3209 flow [2024-06-28 01:34:12,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:12,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:12,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:12,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:34:12,143 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:12,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:12,144 INFO L85 PathProgramCache]: Analyzing trace with hash 137810434, now seen corresponding path program 2 times [2024-06-28 01:34:12,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:12,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277401651] [2024-06-28 01:34:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:12,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:13,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:13,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277401651] [2024-06-28 01:34:13,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277401651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:13,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:13,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:13,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766989190] [2024-06-28 01:34:13,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:13,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:13,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:13,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:13,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:13,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:13,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 275 transitions, 3209 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:13,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:13,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:13,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:15,119 INFO L124 PetriNetUnfolderBase]: 8201/12973 cut-off events. [2024-06-28 01:34:15,120 INFO L125 PetriNetUnfolderBase]: For 458164/458180 co-relation queries the response was YES. [2024-06-28 01:34:15,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86085 conditions, 12973 events. 8201/12973 cut-off events. For 458164/458180 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 84920 event pairs, 2578 based on Foata normal form. 8/12589 useless extension candidates. Maximal degree in co-relation 86005. Up to 10819 conditions per place. [2024-06-28 01:34:15,254 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 243 selfloop transitions, 93 changer transitions 0/347 dead transitions. [2024-06-28 01:34:15,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 347 transitions, 4742 flow [2024-06-28 01:34:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:34:15,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177777777777778 [2024-06-28 01:34:15,255 INFO L175 Difference]: Start difference. First operand has 179 places, 275 transitions, 3209 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:34:15,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 347 transitions, 4742 flow [2024-06-28 01:34:15,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 347 transitions, 4528 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:15,814 INFO L231 Difference]: Finished difference. Result has 184 places, 291 transitions, 3641 flow [2024-06-28 01:34:15,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2995, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3641, PETRI_PLACES=184, PETRI_TRANSITIONS=291} [2024-06-28 01:34:15,814 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 128 predicate places. [2024-06-28 01:34:15,814 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 291 transitions, 3641 flow [2024-06-28 01:34:15,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:15,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:15,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:15,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:34:15,815 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:15,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:15,815 INFO L85 PathProgramCache]: Analyzing trace with hash 138019684, now seen corresponding path program 3 times [2024-06-28 01:34:15,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:15,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401703091] [2024-06-28 01:34:15,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:15,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:16,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:16,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401703091] [2024-06-28 01:34:16,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401703091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:16,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:16,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:16,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197207771] [2024-06-28 01:34:16,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:16,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:16,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:16,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:16,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:16,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:16,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 291 transitions, 3641 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:16,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:16,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:16,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:18,942 INFO L124 PetriNetUnfolderBase]: 8239/13047 cut-off events. [2024-06-28 01:34:18,942 INFO L125 PetriNetUnfolderBase]: For 498161/498177 co-relation queries the response was YES. [2024-06-28 01:34:19,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90459 conditions, 13047 events. 8239/13047 cut-off events. For 498161/498177 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 85648 event pairs, 2545 based on Foata normal form. 12/12667 useless extension candidates. Maximal degree in co-relation 90376. Up to 10839 conditions per place. [2024-06-28 01:34:19,088 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 238 selfloop transitions, 100 changer transitions 0/349 dead transitions. [2024-06-28 01:34:19,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 349 transitions, 4799 flow [2024-06-28 01:34:19,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 01:34:19,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088888888888888 [2024-06-28 01:34:19,090 INFO L175 Difference]: Start difference. First operand has 184 places, 291 transitions, 3641 flow. Second operand 9 states and 229 transitions. [2024-06-28 01:34:19,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 349 transitions, 4799 flow [2024-06-28 01:34:19,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 349 transitions, 4637 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-28 01:34:19,642 INFO L231 Difference]: Finished difference. Result has 189 places, 295 transitions, 3811 flow [2024-06-28 01:34:19,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3485, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3811, PETRI_PLACES=189, PETRI_TRANSITIONS=295} [2024-06-28 01:34:19,643 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 133 predicate places. [2024-06-28 01:34:19,643 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 295 transitions, 3811 flow [2024-06-28 01:34:19,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:19,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:19,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:19,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:34:19,643 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:19,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:19,644 INFO L85 PathProgramCache]: Analyzing trace with hash 138012244, now seen corresponding path program 4 times [2024-06-28 01:34:19,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:19,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048795831] [2024-06-28 01:34:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:19,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:20,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:20,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:20,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048795831] [2024-06-28 01:34:20,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048795831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:20,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:20,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:20,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133533868] [2024-06-28 01:34:20,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:20,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:20,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:20,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:20,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:20,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:20,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 295 transitions, 3811 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:20,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:20,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:20,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:22,773 INFO L124 PetriNetUnfolderBase]: 8229/13033 cut-off events. [2024-06-28 01:34:22,773 INFO L125 PetriNetUnfolderBase]: For 504339/504355 co-relation queries the response was YES. [2024-06-28 01:34:22,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90804 conditions, 13033 events. 8229/13033 cut-off events. For 504339/504355 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 85477 event pairs, 2548 based on Foata normal form. 8/12649 useless extension candidates. Maximal degree in co-relation 90719. Up to 10835 conditions per place. [2024-06-28 01:34:22,923 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 240 selfloop transitions, 98 changer transitions 0/349 dead transitions. [2024-06-28 01:34:22,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 349 transitions, 4854 flow [2024-06-28 01:34:22,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:22,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-28 01:34:22,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-28 01:34:22,924 INFO L175 Difference]: Start difference. First operand has 189 places, 295 transitions, 3811 flow. Second operand 9 states and 230 transitions. [2024-06-28 01:34:22,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 349 transitions, 4854 flow [2024-06-28 01:34:23,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 349 transitions, 4462 flow, removed 111 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:23,614 INFO L231 Difference]: Finished difference. Result has 192 places, 295 transitions, 3624 flow [2024-06-28 01:34:23,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3419, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3624, PETRI_PLACES=192, PETRI_TRANSITIONS=295} [2024-06-28 01:34:23,616 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 136 predicate places. [2024-06-28 01:34:23,616 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 295 transitions, 3624 flow [2024-06-28 01:34:23,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:23,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:23,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:23,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:34:23,616 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:23,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:23,617 INFO L85 PathProgramCache]: Analyzing trace with hash -661194980, now seen corresponding path program 1 times [2024-06-28 01:34:23,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:23,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666672269] [2024-06-28 01:34:23,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:23,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:24,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:24,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666672269] [2024-06-28 01:34:24,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666672269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:24,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:24,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:34:24,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332186721] [2024-06-28 01:34:24,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:24,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:34:24,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:24,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:34:24,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:34:24,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:24,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 295 transitions, 3624 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:24,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:24,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:24,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:26,257 INFO L124 PetriNetUnfolderBase]: 8332/13299 cut-off events. [2024-06-28 01:34:26,258 INFO L125 PetriNetUnfolderBase]: For 518294/518435 co-relation queries the response was YES. [2024-06-28 01:34:26,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90178 conditions, 13299 events. 8332/13299 cut-off events. For 518294/518435 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 87392 event pairs, 2708 based on Foata normal form. 50/12894 useless extension candidates. Maximal degree in co-relation 90092. Up to 11535 conditions per place. [2024-06-28 01:34:26,403 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 264 selfloop transitions, 37 changer transitions 0/330 dead transitions. [2024-06-28 01:34:26,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 330 transitions, 4582 flow [2024-06-28 01:34:26,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:34:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:34:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 01:34:26,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49666666666666665 [2024-06-28 01:34:26,404 INFO L175 Difference]: Start difference. First operand has 192 places, 295 transitions, 3624 flow. Second operand 6 states and 149 transitions. [2024-06-28 01:34:26,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 330 transitions, 4582 flow [2024-06-28 01:34:27,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 330 transitions, 4395 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:27,030 INFO L231 Difference]: Finished difference. Result has 191 places, 301 transitions, 3624 flow [2024-06-28 01:34:27,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3437, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3624, PETRI_PLACES=191, PETRI_TRANSITIONS=301} [2024-06-28 01:34:27,031 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 135 predicate places. [2024-06-28 01:34:27,031 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 301 transitions, 3624 flow [2024-06-28 01:34:27,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:27,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:27,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:27,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:34:27,032 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:27,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:27,032 INFO L85 PathProgramCache]: Analyzing trace with hash -550916478, now seen corresponding path program 4 times [2024-06-28 01:34:27,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:27,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489039231] [2024-06-28 01:34:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:27,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:28,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:28,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489039231] [2024-06-28 01:34:28,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489039231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:28,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:28,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:28,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282823988] [2024-06-28 01:34:28,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:28,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:28,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:28,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:28,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:28,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:34:28,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 301 transitions, 3624 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:28,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:28,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:34:28,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:30,296 INFO L124 PetriNetUnfolderBase]: 7820/12460 cut-off events. [2024-06-28 01:34:30,296 INFO L125 PetriNetUnfolderBase]: For 524931/525026 co-relation queries the response was YES. [2024-06-28 01:34:30,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88317 conditions, 12460 events. 7820/12460 cut-off events. For 524931/525026 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 82401 event pairs, 2233 based on Foata normal form. 14/12101 useless extension candidates. Maximal degree in co-relation 88230. Up to 10566 conditions per place. [2024-06-28 01:34:30,450 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 238 selfloop transitions, 76 changer transitions 0/345 dead transitions. [2024-06-28 01:34:30,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 345 transitions, 4526 flow [2024-06-28 01:34:30,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:30,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:34:30,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-28 01:34:30,452 INFO L175 Difference]: Start difference. First operand has 191 places, 301 transitions, 3624 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:34:30,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 345 transitions, 4526 flow [2024-06-28 01:34:31,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 345 transitions, 4443 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-28 01:34:31,088 INFO L231 Difference]: Finished difference. Result has 197 places, 304 transitions, 3811 flow [2024-06-28 01:34:31,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3545, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3811, PETRI_PLACES=197, PETRI_TRANSITIONS=304} [2024-06-28 01:34:31,089 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 141 predicate places. [2024-06-28 01:34:31,089 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 304 transitions, 3811 flow [2024-06-28 01:34:31,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:31,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:31,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:31,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:34:31,090 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:31,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash -550910526, now seen corresponding path program 5 times [2024-06-28 01:34:31,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:31,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981958704] [2024-06-28 01:34:31,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:31,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:32,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:32,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981958704] [2024-06-28 01:34:32,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981958704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:32,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:32,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:32,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297629985] [2024-06-28 01:34:32,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:32,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:32,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:32,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:32,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:32,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 304 transitions, 3811 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:32,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:32,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:32,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:34,296 INFO L124 PetriNetUnfolderBase]: 8334/13004 cut-off events. [2024-06-28 01:34:34,296 INFO L125 PetriNetUnfolderBase]: For 552862/552877 co-relation queries the response was YES. [2024-06-28 01:34:34,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92455 conditions, 13004 events. 8334/13004 cut-off events. For 552862/552877 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 83816 event pairs, 2379 based on Foata normal form. 14/12683 useless extension candidates. Maximal degree in co-relation 92366. Up to 10406 conditions per place. [2024-06-28 01:34:34,463 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 235 selfloop transitions, 152 changer transitions 0/398 dead transitions. [2024-06-28 01:34:34,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 398 transitions, 5910 flow [2024-06-28 01:34:34,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:34,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-28 01:34:34,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311111111111111 [2024-06-28 01:34:34,465 INFO L175 Difference]: Start difference. First operand has 197 places, 304 transitions, 3811 flow. Second operand 9 states and 239 transitions. [2024-06-28 01:34:34,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 398 transitions, 5910 flow [2024-06-28 01:34:35,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 398 transitions, 5668 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:35,160 INFO L231 Difference]: Finished difference. Result has 203 places, 335 transitions, 4651 flow [2024-06-28 01:34:35,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3569, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4651, PETRI_PLACES=203, PETRI_TRANSITIONS=335} [2024-06-28 01:34:35,165 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 147 predicate places. [2024-06-28 01:34:35,166 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 335 transitions, 4651 flow [2024-06-28 01:34:35,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:35,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:35,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:35,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:34:35,169 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:35,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:35,169 INFO L85 PathProgramCache]: Analyzing trace with hash -550708716, now seen corresponding path program 6 times [2024-06-28 01:34:35,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:35,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924022184] [2024-06-28 01:34:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:35,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:36,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:36,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924022184] [2024-06-28 01:34:36,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924022184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:36,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:36,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:36,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449659695] [2024-06-28 01:34:36,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:36,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:36,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:36,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:36,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:36,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:36,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 335 transitions, 4651 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:36,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:36,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:36,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:38,496 INFO L124 PetriNetUnfolderBase]: 8561/13319 cut-off events. [2024-06-28 01:34:38,496 INFO L125 PetriNetUnfolderBase]: For 627423/627438 co-relation queries the response was YES. [2024-06-28 01:34:38,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101302 conditions, 13319 events. 8561/13319 cut-off events. For 627423/627438 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 85809 event pairs, 2391 based on Foata normal form. 14/12998 useless extension candidates. Maximal degree in co-relation 101209. Up to 10557 conditions per place. [2024-06-28 01:34:38,890 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 245 selfloop transitions, 159 changer transitions 0/415 dead transitions. [2024-06-28 01:34:38,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 415 transitions, 6815 flow [2024-06-28 01:34:38,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:38,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-28 01:34:38,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-28 01:34:38,892 INFO L175 Difference]: Start difference. First operand has 203 places, 335 transitions, 4651 flow. Second operand 9 states and 243 transitions. [2024-06-28 01:34:38,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 415 transitions, 6815 flow [2024-06-28 01:34:39,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 415 transitions, 6547 flow, removed 114 selfloop flow, removed 3 redundant places. [2024-06-28 01:34:39,649 INFO L231 Difference]: Finished difference. Result has 210 places, 349 transitions, 5154 flow [2024-06-28 01:34:39,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4447, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5154, PETRI_PLACES=210, PETRI_TRANSITIONS=349} [2024-06-28 01:34:39,650 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 154 predicate places. [2024-06-28 01:34:39,650 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 349 transitions, 5154 flow [2024-06-28 01:34:39,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:39,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:39,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:39,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:34:39,650 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:39,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:39,651 INFO L85 PathProgramCache]: Analyzing trace with hash -294200766, now seen corresponding path program 7 times [2024-06-28 01:34:39,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:39,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199754561] [2024-06-28 01:34:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:39,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:40,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:40,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199754561] [2024-06-28 01:34:40,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199754561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:40,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:40,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:40,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438885058] [2024-06-28 01:34:40,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:40,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:40,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:40,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:40,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:40,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:40,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 349 transitions, 5154 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:40,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:40,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:40,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:43,200 INFO L124 PetriNetUnfolderBase]: 8784/13646 cut-off events. [2024-06-28 01:34:43,201 INFO L125 PetriNetUnfolderBase]: For 651962/651977 co-relation queries the response was YES. [2024-06-28 01:34:43,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104145 conditions, 13646 events. 8784/13646 cut-off events. For 651962/651977 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 87975 event pairs, 2343 based on Foata normal form. 18/13332 useless extension candidates. Maximal degree in co-relation 104049. Up to 10708 conditions per place. [2024-06-28 01:34:43,357 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 240 selfloop transitions, 176 changer transitions 0/427 dead transitions. [2024-06-28 01:34:43,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 427 transitions, 7156 flow [2024-06-28 01:34:43,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:43,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:43,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-28 01:34:43,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311111111111111 [2024-06-28 01:34:43,358 INFO L175 Difference]: Start difference. First operand has 210 places, 349 transitions, 5154 flow. Second operand 9 states and 239 transitions. [2024-06-28 01:34:43,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 427 transitions, 7156 flow [2024-06-28 01:34:44,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 427 transitions, 6797 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-06-28 01:34:44,247 INFO L231 Difference]: Finished difference. Result has 216 places, 362 transitions, 5541 flow [2024-06-28 01:34:44,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4806, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5541, PETRI_PLACES=216, PETRI_TRANSITIONS=362} [2024-06-28 01:34:44,247 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 160 predicate places. [2024-06-28 01:34:44,247 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 362 transitions, 5541 flow [2024-06-28 01:34:44,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:44,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:44,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:44,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:34:44,251 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:44,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:44,251 INFO L85 PathProgramCache]: Analyzing trace with hash -550701276, now seen corresponding path program 8 times [2024-06-28 01:34:44,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:44,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100218722] [2024-06-28 01:34:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:44,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:45,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:45,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100218722] [2024-06-28 01:34:45,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100218722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:45,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:45,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:45,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719280918] [2024-06-28 01:34:45,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:45,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:45,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:45,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:45,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:45,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:45,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 362 transitions, 5541 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:45,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:45,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:45,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:47,945 INFO L124 PetriNetUnfolderBase]: 8830/13740 cut-off events. [2024-06-28 01:34:47,945 INFO L125 PetriNetUnfolderBase]: For 672050/672065 co-relation queries the response was YES. [2024-06-28 01:34:48,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105199 conditions, 13740 events. 8830/13740 cut-off events. For 672050/672065 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 88589 event pairs, 2251 based on Foata normal form. 18/13420 useless extension candidates. Maximal degree in co-relation 105101. Up to 10747 conditions per place. [2024-06-28 01:34:48,106 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 245 selfloop transitions, 170 changer transitions 0/426 dead transitions. [2024-06-28 01:34:48,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 426 transitions, 7172 flow [2024-06-28 01:34:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:48,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-28 01:34:48,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-28 01:34:48,109 INFO L175 Difference]: Start difference. First operand has 216 places, 362 transitions, 5541 flow. Second operand 9 states and 240 transitions. [2024-06-28 01:34:48,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 426 transitions, 7172 flow [2024-06-28 01:34:49,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 426 transitions, 6725 flow, removed 113 selfloop flow, removed 4 redundant places. [2024-06-28 01:34:49,110 INFO L231 Difference]: Finished difference. Result has 221 places, 362 transitions, 5445 flow [2024-06-28 01:34:49,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5094, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5445, PETRI_PLACES=221, PETRI_TRANSITIONS=362} [2024-06-28 01:34:49,112 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 165 predicate places. [2024-06-28 01:34:49,112 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 362 transitions, 5445 flow [2024-06-28 01:34:49,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:49,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:49,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:49,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:34:49,113 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:49,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:49,113 INFO L85 PathProgramCache]: Analyzing trace with hash -294208206, now seen corresponding path program 9 times [2024-06-28 01:34:49,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:49,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334567118] [2024-06-28 01:34:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:49,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:50,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:50,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334567118] [2024-06-28 01:34:50,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334567118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:50,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:50,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:50,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462171187] [2024-06-28 01:34:50,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:50,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:50,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:50,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:50,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:50,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:50,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 362 transitions, 5445 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:50,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:50,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:50,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:53,054 INFO L124 PetriNetUnfolderBase]: 8760/13622 cut-off events. [2024-06-28 01:34:53,054 INFO L125 PetriNetUnfolderBase]: For 665213/665228 co-relation queries the response was YES. [2024-06-28 01:34:53,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102819 conditions, 13622 events. 8760/13622 cut-off events. For 665213/665228 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 87890 event pairs, 2324 based on Foata normal form. 14/13301 useless extension candidates. Maximal degree in co-relation 102720. Up to 10700 conditions per place. [2024-06-28 01:34:53,453 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 235 selfloop transitions, 180 changer transitions 0/426 dead transitions. [2024-06-28 01:34:53,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 426 transitions, 7088 flow [2024-06-28 01:34:53,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:53,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:53,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 01:34:53,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288888888888889 [2024-06-28 01:34:53,460 INFO L175 Difference]: Start difference. First operand has 221 places, 362 transitions, 5445 flow. Second operand 9 states and 238 transitions. [2024-06-28 01:34:53,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 426 transitions, 7088 flow [2024-06-28 01:34:54,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 426 transitions, 6732 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:54,412 INFO L231 Difference]: Finished difference. Result has 223 places, 363 transitions, 5476 flow [2024-06-28 01:34:54,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5089, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5476, PETRI_PLACES=223, PETRI_TRANSITIONS=363} [2024-06-28 01:34:54,412 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 167 predicate places. [2024-06-28 01:34:54,412 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 363 transitions, 5476 flow [2024-06-28 01:34:54,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:54,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:54,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:54,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:34:54,413 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:54,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:54,413 INFO L85 PathProgramCache]: Analyzing trace with hash -285003996, now seen corresponding path program 10 times [2024-06-28 01:34:54,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:54,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323035233] [2024-06-28 01:34:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:54,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:55,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:55,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323035233] [2024-06-28 01:34:55,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323035233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:55,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:55,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:55,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096202123] [2024-06-28 01:34:55,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:55,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:55,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:55,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:55,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:55,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:34:55,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 363 transitions, 5476 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:55,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:55,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:34:55,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:58,180 INFO L124 PetriNetUnfolderBase]: 8746/13596 cut-off events. [2024-06-28 01:34:58,180 INFO L125 PetriNetUnfolderBase]: For 677227/677242 co-relation queries the response was YES. [2024-06-28 01:34:58,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102777 conditions, 13596 events. 8746/13596 cut-off events. For 677227/677242 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 87580 event pairs, 2315 based on Foata normal form. 18/13282 useless extension candidates. Maximal degree in co-relation 102677. Up to 10696 conditions per place. [2024-06-28 01:34:58,345 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 227 selfloop transitions, 186 changer transitions 0/424 dead transitions. [2024-06-28 01:34:58,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 424 transitions, 6931 flow [2024-06-28 01:34:58,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:58,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:58,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 01:34:58,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-28 01:34:58,347 INFO L175 Difference]: Start difference. First operand has 223 places, 363 transitions, 5476 flow. Second operand 9 states and 235 transitions. [2024-06-28 01:34:58,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 424 transitions, 6931 flow [2024-06-28 01:34:59,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 424 transitions, 6344 flow, removed 84 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:59,436 INFO L231 Difference]: Finished difference. Result has 224 places, 363 transitions, 5272 flow [2024-06-28 01:34:59,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4889, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5272, PETRI_PLACES=224, PETRI_TRANSITIONS=363} [2024-06-28 01:34:59,436 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 168 predicate places. [2024-06-28 01:34:59,437 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 363 transitions, 5272 flow [2024-06-28 01:34:59,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:59,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:59,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:59,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:34:59,437 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:59,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:59,437 INFO L85 PathProgramCache]: Analyzing trace with hash -646910180, now seen corresponding path program 2 times [2024-06-28 01:34:59,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:59,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244358173] [2024-06-28 01:34:59,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:59,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:00,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:00,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244358173] [2024-06-28 01:35:00,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244358173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:00,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:00,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:35:00,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981034927] [2024-06-28 01:35:00,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:00,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:35:00,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:35:00,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:35:00,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:35:00,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 363 transitions, 5272 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:00,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:00,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:35:00,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:02,944 INFO L124 PetriNetUnfolderBase]: 9045/14245 cut-off events. [2024-06-28 01:35:02,944 INFO L125 PetriNetUnfolderBase]: For 694899/695052 co-relation queries the response was YES. [2024-06-28 01:35:03,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103273 conditions, 14245 events. 9045/14245 cut-off events. For 694899/695052 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 92556 event pairs, 2791 based on Foata normal form. 66/13830 useless extension candidates. Maximal degree in co-relation 103173. Up to 12523 conditions per place. [2024-06-28 01:35:03,089 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 319 selfloop transitions, 36 changer transitions 0/384 dead transitions. [2024-06-28 01:35:03,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 384 transitions, 6108 flow [2024-06-28 01:35:03,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:35:03,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:35:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:35:03,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-06-28 01:35:03,090 INFO L175 Difference]: Start difference. First operand has 224 places, 363 transitions, 5272 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:35:03,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 384 transitions, 6108 flow [2024-06-28 01:35:03,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 384 transitions, 5717 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:03,949 INFO L231 Difference]: Finished difference. Result has 222 places, 363 transitions, 4959 flow [2024-06-28 01:35:03,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4881, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4959, PETRI_PLACES=222, PETRI_TRANSITIONS=363} [2024-06-28 01:35:03,950 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 166 predicate places. [2024-06-28 01:35:03,950 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 363 transitions, 4959 flow [2024-06-28 01:35:03,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:03,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:03,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:03,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:35:03,950 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:03,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:03,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1351819070, now seen corresponding path program 5 times [2024-06-28 01:35:03,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:03,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925214026] [2024-06-28 01:35:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:03,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:05,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:05,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925214026] [2024-06-28 01:35:05,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925214026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:05,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:05,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:05,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51750032] [2024-06-28 01:35:05,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:05,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:05,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:05,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:05,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:05,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 363 transitions, 4959 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:05,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:05,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:05,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:08,091 INFO L124 PetriNetUnfolderBase]: 8593/13463 cut-off events. [2024-06-28 01:35:08,091 INFO L125 PetriNetUnfolderBase]: For 703646/703796 co-relation queries the response was YES. [2024-06-28 01:35:08,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100969 conditions, 13463 events. 8593/13463 cut-off events. For 703646/703796 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 87661 event pairs, 2483 based on Foata normal form. 64/13116 useless extension candidates. Maximal degree in co-relation 100869. Up to 11715 conditions per place. [2024-06-28 01:35:08,237 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 339 selfloop transitions, 85 changer transitions 0/455 dead transitions. [2024-06-28 01:35:08,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 455 transitions, 6565 flow [2024-06-28 01:35:08,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:08,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:35:08,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155555555555555 [2024-06-28 01:35:08,238 INFO L175 Difference]: Start difference. First operand has 222 places, 363 transitions, 4959 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:35:08,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 455 transitions, 6565 flow [2024-06-28 01:35:09,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 455 transitions, 6451 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:09,058 INFO L231 Difference]: Finished difference. Result has 230 places, 404 transitions, 5722 flow [2024-06-28 01:35:09,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4854, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5722, PETRI_PLACES=230, PETRI_TRANSITIONS=404} [2024-06-28 01:35:09,059 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 174 predicate places. [2024-06-28 01:35:09,059 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 404 transitions, 5722 flow [2024-06-28 01:35:09,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:09,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:09,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:09,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:35:09,059 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:09,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:09,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2072991738, now seen corresponding path program 6 times [2024-06-28 01:35:09,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:09,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616116038] [2024-06-28 01:35:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:09,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:10,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:10,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616116038] [2024-06-28 01:35:10,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616116038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:10,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:10,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:10,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587772601] [2024-06-28 01:35:10,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:10,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:10,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:10,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:10,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:10,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:10,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 404 transitions, 5722 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:10,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:10,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:10,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:13,432 INFO L124 PetriNetUnfolderBase]: 8844/13833 cut-off events. [2024-06-28 01:35:13,432 INFO L125 PetriNetUnfolderBase]: For 747216/747360 co-relation queries the response was YES. [2024-06-28 01:35:13,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106821 conditions, 13833 events. 8844/13833 cut-off events. For 747216/747360 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 90041 event pairs, 2512 based on Foata normal form. 68/13495 useless extension candidates. Maximal degree in co-relation 106716. Up to 11989 conditions per place. [2024-06-28 01:35:13,576 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 357 selfloop transitions, 115 changer transitions 0/503 dead transitions. [2024-06-28 01:35:13,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 503 transitions, 7655 flow [2024-06-28 01:35:13,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:13,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-28 01:35:13,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2024-06-28 01:35:13,577 INFO L175 Difference]: Start difference. First operand has 230 places, 404 transitions, 5722 flow. Second operand 9 states and 231 transitions. [2024-06-28 01:35:13,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 503 transitions, 7655 flow [2024-06-28 01:35:14,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 503 transitions, 7333 flow, removed 110 selfloop flow, removed 3 redundant places. [2024-06-28 01:35:14,667 INFO L231 Difference]: Finished difference. Result has 238 places, 450 transitions, 6520 flow [2024-06-28 01:35:14,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5536, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6520, PETRI_PLACES=238, PETRI_TRANSITIONS=450} [2024-06-28 01:35:14,667 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 182 predicate places. [2024-06-28 01:35:14,668 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 450 transitions, 6520 flow [2024-06-28 01:35:14,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:14,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:14,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:14,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:35:14,668 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:14,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:14,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1520053134, now seen corresponding path program 7 times [2024-06-28 01:35:14,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:14,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105271971] [2024-06-28 01:35:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:14,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:15,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:15,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105271971] [2024-06-28 01:35:15,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105271971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:15,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:15,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:35:15,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967903433] [2024-06-28 01:35:15,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:15,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:35:15,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:15,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:35:15,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:35:15,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:15,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 450 transitions, 6520 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:15,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:15,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:15,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:19,070 INFO L124 PetriNetUnfolderBase]: 9074/14181 cut-off events. [2024-06-28 01:35:19,070 INFO L125 PetriNetUnfolderBase]: For 780119/780263 co-relation queries the response was YES. [2024-06-28 01:35:19,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110650 conditions, 14181 events. 9074/14181 cut-off events. For 780119/780263 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 92382 event pairs, 2075 based on Foata normal form. 68/13843 useless extension candidates. Maximal degree in co-relation 110542. Up to 12103 conditions per place. [2024-06-28 01:35:19,213 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 355 selfloop transitions, 158 changer transitions 0/544 dead transitions. [2024-06-28 01:35:19,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 544 transitions, 8405 flow [2024-06-28 01:35:19,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:19,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:35:19,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-06-28 01:35:19,215 INFO L175 Difference]: Start difference. First operand has 238 places, 450 transitions, 6520 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:35:19,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 544 transitions, 8405 flow [2024-06-28 01:35:20,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 544 transitions, 7982 flow, removed 109 selfloop flow, removed 6 redundant places. [2024-06-28 01:35:20,468 INFO L231 Difference]: Finished difference. Result has 243 places, 497 transitions, 7216 flow [2024-06-28 01:35:20,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6216, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7216, PETRI_PLACES=243, PETRI_TRANSITIONS=497} [2024-06-28 01:35:20,469 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 187 predicate places. [2024-06-28 01:35:20,469 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 497 transitions, 7216 flow [2024-06-28 01:35:20,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:20,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:20,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:20,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:35:20,469 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:20,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1356363323, now seen corresponding path program 1 times [2024-06-28 01:35:20,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:20,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237572047] [2024-06-28 01:35:20,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:20,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:21,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:21,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237572047] [2024-06-28 01:35:21,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237572047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:21,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:21,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:35:21,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672103318] [2024-06-28 01:35:21,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:21,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:35:21,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:35:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:35:21,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:21,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 497 transitions, 7216 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:21,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:21,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:21,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:24,499 INFO L124 PetriNetUnfolderBase]: 8828/13858 cut-off events. [2024-06-28 01:35:24,499 INFO L125 PetriNetUnfolderBase]: For 735183/735311 co-relation queries the response was YES. [2024-06-28 01:35:24,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106307 conditions, 13858 events. 8828/13858 cut-off events. For 735183/735311 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 90085 event pairs, 2584 based on Foata normal form. 37/13492 useless extension candidates. Maximal degree in co-relation 106197. Up to 12286 conditions per place. [2024-06-28 01:35:24,656 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 479 selfloop transitions, 23 changer transitions 0/532 dead transitions. [2024-06-28 01:35:24,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 532 transitions, 8685 flow [2024-06-28 01:35:24,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:24,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:35:24,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657142857142857 [2024-06-28 01:35:24,657 INFO L175 Difference]: Start difference. First operand has 243 places, 497 transitions, 7216 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:35:24,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 532 transitions, 8685 flow [2024-06-28 01:35:26,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 532 transitions, 8467 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:26,110 INFO L231 Difference]: Finished difference. Result has 246 places, 507 transitions, 7229 flow [2024-06-28 01:35:26,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6998, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7229, PETRI_PLACES=246, PETRI_TRANSITIONS=507} [2024-06-28 01:35:26,111 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 190 predicate places. [2024-06-28 01:35:26,111 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 507 transitions, 7229 flow [2024-06-28 01:35:26,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:26,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:26,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:26,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:35:26,112 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:26,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:26,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1306307003, now seen corresponding path program 2 times [2024-06-28 01:35:26,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:26,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275539635] [2024-06-28 01:35:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:26,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:26,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:26,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275539635] [2024-06-28 01:35:26,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275539635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:26,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:26,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:35:26,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913668655] [2024-06-28 01:35:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:26,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:35:26,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:26,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:35:26,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:35:27,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-28 01:35:27,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 507 transitions, 7229 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:27,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:27,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-28 01:35:27,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:29,860 INFO L124 PetriNetUnfolderBase]: 8821/13836 cut-off events. [2024-06-28 01:35:29,860 INFO L125 PetriNetUnfolderBase]: For 753426/753555 co-relation queries the response was YES. [2024-06-28 01:35:29,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107467 conditions, 13836 events. 8821/13836 cut-off events. For 753426/753555 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 89637 event pairs, 2674 based on Foata normal form. 50/13488 useless extension candidates. Maximal degree in co-relation 107355. Up to 12306 conditions per place. [2024-06-28 01:35:30,029 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 479 selfloop transitions, 15 changer transitions 0/524 dead transitions. [2024-06-28 01:35:30,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 524 transitions, 8339 flow [2024-06-28 01:35:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:30,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 01:35:30,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-28 01:35:30,030 INFO L175 Difference]: Start difference. First operand has 246 places, 507 transitions, 7229 flow. Second operand 7 states and 155 transitions. [2024-06-28 01:35:30,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 524 transitions, 8339 flow [2024-06-28 01:35:31,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 524 transitions, 8267 flow, removed 35 selfloop flow, removed 1 redundant places. [2024-06-28 01:35:31,397 INFO L231 Difference]: Finished difference. Result has 252 places, 507 transitions, 7193 flow [2024-06-28 01:35:31,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7157, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7193, PETRI_PLACES=252, PETRI_TRANSITIONS=507} [2024-06-28 01:35:31,398 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 196 predicate places. [2024-06-28 01:35:31,398 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 507 transitions, 7193 flow [2024-06-28 01:35:31,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:31,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:31,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:31,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:35:31,399 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:31,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:31,400 INFO L85 PathProgramCache]: Analyzing trace with hash -284665383, now seen corresponding path program 1 times [2024-06-28 01:35:31,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:31,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102331030] [2024-06-28 01:35:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:31,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:32,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102331030] [2024-06-28 01:35:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102331030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:32,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:32,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:32,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758634955] [2024-06-28 01:35:32,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:32,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:32,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:32,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:32,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:32,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-28 01:35:32,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 507 transitions, 7193 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:32,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:32,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-28 01:35:32,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:35,958 INFO L124 PetriNetUnfolderBase]: 9152/14103 cut-off events. [2024-06-28 01:35:35,958 INFO L125 PetriNetUnfolderBase]: For 765292/765292 co-relation queries the response was YES. [2024-06-28 01:35:36,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109661 conditions, 14103 events. 9152/14103 cut-off events. For 765292/765292 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 89182 event pairs, 2654 based on Foata normal form. 4/13813 useless extension candidates. Maximal degree in co-relation 109546. Up to 12763 conditions per place. [2024-06-28 01:35:36,114 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 512 selfloop transitions, 49 changer transitions 0/571 dead transitions. [2024-06-28 01:35:36,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 571 transitions, 9021 flow [2024-06-28 01:35:36,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:36,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:36,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-28 01:35:36,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.472 [2024-06-28 01:35:36,116 INFO L175 Difference]: Start difference. First operand has 252 places, 507 transitions, 7193 flow. Second operand 10 states and 236 transitions. [2024-06-28 01:35:36,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 571 transitions, 9021 flow