./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe012_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe012_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe012_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:58:25,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:58:25,381 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:58:25,383 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:58:25,383 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:58:25,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:58:25,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:58:25,396 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:58:25,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:58:25,396 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:58:25,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:58:25,397 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:58:25,397 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:58:25,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:58:25,397 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:58:25,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:58:25,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:58:25,398 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:58:25,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:58:25,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:58:25,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:58:25,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:58:25,399 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:58:25,399 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:58:25,400 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:58:25,400 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:58:25,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:58:25,400 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:58:25,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:58:25,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:58:25,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:58:25,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:58:25,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:58:25,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:58:25,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:58:25,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:58:25,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:58:25,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:58:25,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:58:25,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:58:25,402 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:58:25,404 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:58:25,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:58:25,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:58:25,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:58:25,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:58:25,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:58:25,629 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:58:25,629 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:58:25,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe012_rmo.oepc.yml/witness.yml [2024-06-28 01:58:25,826 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:58:25,827 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:58:25,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_rmo.oepc.i [2024-06-28 01:58:26,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:58:27,044 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:58:27,045 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_rmo.oepc.i [2024-06-28 01:58:27,061 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67cdbfdb6/406564a2b9c04ddaae4a6683ddcfd47c/FLAGf9142147b [2024-06-28 01:58:27,075 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67cdbfdb6/406564a2b9c04ddaae4a6683ddcfd47c [2024-06-28 01:58:27,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:58:27,078 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:58:27,080 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:58:27,080 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:58:27,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:58:27,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:58:25" (1/2) ... [2024-06-28 01:58:27,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f16918a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:58:27, skipping insertion in model container [2024-06-28 01:58:27,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:58:25" (1/2) ... [2024-06-28 01:58:27,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@746c3711 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:58:27, skipping insertion in model container [2024-06-28 01:58:27,087 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:58:27" (2/2) ... [2024-06-28 01:58:27,088 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f16918a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27, skipping insertion in model container [2024-06-28 01:58:27,088 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:58:27" (2/2) ... [2024-06-28 01:58:27,088 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:58:27,185 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:58:27,186 INFO L97 edCorrectnessWitness]: Location invariant before [L842-L842] (((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$w_buff0_used == (_Bool)0)) && (! multithreaded || z$w_buff1_used == (_Bool)0)) && (! multithreaded || z$w_buff0 == 0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && z$w_buff0 == 0) && z$w_buff0_used == (_Bool)0) && z$w_buff1 == 0) && z$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0) [2024-06-28 01:58:27,186 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$w_buff0_used == (_Bool)0)) && (! multithreaded || z$w_buff1_used == (_Bool)0)) && (! multithreaded || z$w_buff0 == 0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && z$w_buff0 == 0) && z$w_buff0_used == (_Bool)0) && z$w_buff1 == 0) && z$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0) [2024-06-28 01:58:27,187 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] (((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$w_buff0_used == (_Bool)0)) && (! multithreaded || z$w_buff1_used == (_Bool)0)) && (! multithreaded || z$w_buff0 == 0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && z$w_buff0 == 0) && z$w_buff0_used == (_Bool)0) && z$w_buff1 == 0) && z$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0) [2024-06-28 01:58:27,187 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:58:27,187 INFO L106 edCorrectnessWitness]: ghost_update [L837-L837] multithreaded = 1; [2024-06-28 01:58:27,222 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:58:27,367 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/safe012_rmo.oepc.i[993,1006] [2024-06-28 01:58:27,548 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:58:27,560 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:58:27,591 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/safe012_rmo.oepc.i[993,1006] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:58:27,683 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:58:27,716 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:58:27,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27 WrapperNode [2024-06-28 01:58:27,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:58:27,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:58:27,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:58:27,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:58:27,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27" (1/1) ... [2024-06-28 01:58:27,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27" (1/1) ... [2024-06-28 01:58:27,774 INFO L138 Inliner]: procedures = 175, calls = 79, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 207 [2024-06-28 01:58:27,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:58:27,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:58:27,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:58:27,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:58:27,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27" (1/1) ... [2024-06-28 01:58:27,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27" (1/1) ... [2024-06-28 01:58:27,791 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27" (1/1) ... [2024-06-28 01:58:27,811 INFO L175 MemorySlicer]: Split 39 memory accesses to 2 slices as follows [2, 37]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-28 01:58:27,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27" (1/1) ... [2024-06-28 01:58:27,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27" (1/1) ... [2024-06-28 01:58:27,833 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27" (1/1) ... [2024-06-28 01:58:27,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27" (1/1) ... [2024-06-28 01:58:27,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27" (1/1) ... [2024-06-28 01:58:27,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27" (1/1) ... [2024-06-28 01:58:27,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:58:27,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:58:27,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:58:27,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:58:27,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27" (1/1) ... [2024-06-28 01:58:27,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:58:27,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:58:27,879 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 01:58:27,906 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 01:58:27,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:58:27,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:58:27,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:58:27,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:58:27,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:58:27,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:58:27,924 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:58:27,925 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:58:27,925 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:58:27,925 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:58:27,926 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:58:27,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:58:27,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:58:27,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:58:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:58:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:58:27,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:58:27,929 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 01:58:28,074 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:58:28,075 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:58:28,529 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:58:28,529 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:58:28,875 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:58:28,876 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:58:28,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:58:28 BoogieIcfgContainer [2024-06-28 01:58:28,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:58:28,879 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:58:28,879 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:58:28,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:58:28,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:58:25" (1/4) ... [2024-06-28 01:58:28,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddd4103 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:58:28, skipping insertion in model container [2024-06-28 01:58:28,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:58:27" (2/4) ... [2024-06-28 01:58:28,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddd4103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:58:28, skipping insertion in model container [2024-06-28 01:58:28,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:58:27" (3/4) ... [2024-06-28 01:58:28,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddd4103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:58:28, skipping insertion in model container [2024-06-28 01:58:28,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:58:28" (4/4) ... [2024-06-28 01:58:28,884 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_rmo.oepc.i [2024-06-28 01:58:28,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:58:28,899 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:58:28,900 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:58:28,959 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:58:28,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:58:29,026 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:58:29,027 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:58:29,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 01:58:29,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:58:29,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-06-28 01:58:29,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:58:29,057 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;@c28942b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:58:29,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:58:29,062 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:58:29,062 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:58:29,062 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:58:29,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:29,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:58:29,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:29,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash 629752520, now seen corresponding path program 1 times [2024-06-28 01:58:29,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:29,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785111502] [2024-06-28 01:58:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:29,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:30,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:30,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785111502] [2024-06-28 01:58:30,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785111502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:30,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:30,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:58:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165646494] [2024-06-28 01:58:30,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:30,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:58:30,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:30,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:58:30,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:58:30,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:58:30,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:30,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:30,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:58:30,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:31,514 INFO L124 PetriNetUnfolderBase]: 2180/3473 cut-off events. [2024-06-28 01:58:31,514 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-28 01:58:31,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6726 conditions, 3473 events. 2180/3473 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 19795 event pairs, 1317 based on Foata normal form. 0/3339 useless extension candidates. Maximal degree in co-relation 6714. Up to 3184 conditions per place. [2024-06-28 01:58:31,533 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 43 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 01:58:31,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 227 flow [2024-06-28 01:58:31,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:58:31,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:58:31,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-28 01:58:31,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-06-28 01:58:31,544 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 93 transitions. [2024-06-28 01:58:31,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 227 flow [2024-06-28 01:58:31,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:31,548 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 125 flow [2024-06-28 01:58:31,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-28 01:58:31,552 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-28 01:58:31,552 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 125 flow [2024-06-28 01:58:31,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:31,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:31,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:31,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:58:31,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:31,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:31,554 INFO L85 PathProgramCache]: Analyzing trace with hash -398190777, now seen corresponding path program 1 times [2024-06-28 01:58:31,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:31,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101436504] [2024-06-28 01:58:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:31,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:33,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:33,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101436504] [2024-06-28 01:58:33,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101436504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:33,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:33,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:58:33,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498083129] [2024-06-28 01:58:33,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:33,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:58:33,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:33,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:58:33,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:58:33,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:58:33,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:33,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:33,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:58:33,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:34,348 INFO L124 PetriNetUnfolderBase]: 2174/3323 cut-off events. [2024-06-28 01:58:34,349 INFO L125 PetriNetUnfolderBase]: For 604/614 co-relation queries the response was YES. [2024-06-28 01:58:34,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7442 conditions, 3323 events. 2174/3323 cut-off events. For 604/614 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18226 event pairs, 893 based on Foata normal form. 6/3322 useless extension candidates. Maximal degree in co-relation 7430. Up to 3142 conditions per place. [2024-06-28 01:58:34,366 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 60 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-06-28 01:58:34,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 355 flow [2024-06-28 01:58:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:58:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:58:34,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-28 01:58:34,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2024-06-28 01:58:34,370 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 125 flow. Second operand 4 states and 126 transitions. [2024-06-28 01:58:34,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 355 flow [2024-06-28 01:58:34,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:58:34,373 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 188 flow [2024-06-28 01:58:34,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-28 01:58:34,374 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-06-28 01:58:34,374 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 188 flow [2024-06-28 01:58:34,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:34,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:34,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:34,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:58:34,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:34,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:34,375 INFO L85 PathProgramCache]: Analyzing trace with hash 199109801, now seen corresponding path program 1 times [2024-06-28 01:58:34,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:34,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981454443] [2024-06-28 01:58:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:34,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:36,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981454443] [2024-06-28 01:58:36,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981454443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:36,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:36,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:58:36,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963622662] [2024-06-28 01:58:36,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:36,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:58:36,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:36,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:58:36,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:58:37,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:58:37,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:37,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:37,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:58:37,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:38,087 INFO L124 PetriNetUnfolderBase]: 2769/4162 cut-off events. [2024-06-28 01:58:38,088 INFO L125 PetriNetUnfolderBase]: For 2308/2338 co-relation queries the response was YES. [2024-06-28 01:58:38,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 4162 events. 2769/4162 cut-off events. For 2308/2338 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 22444 event pairs, 709 based on Foata normal form. 15/4168 useless extension candidates. Maximal degree in co-relation 10420. Up to 3890 conditions per place. [2024-06-28 01:58:38,106 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 87 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-06-28 01:58:38,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 111 transitions, 546 flow [2024-06-28 01:58:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:58:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:58:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-28 01:58:38,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-28 01:58:38,108 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 188 flow. Second operand 6 states and 180 transitions. [2024-06-28 01:58:38,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 111 transitions, 546 flow [2024-06-28 01:58:38,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 111 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 01:58:38,114 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 258 flow [2024-06-28 01:58:38,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-28 01:58:38,115 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2024-06-28 01:58:38,116 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 258 flow [2024-06-28 01:58:38,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:38,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:38,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:38,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:58:38,117 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:38,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:38,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1492627950, now seen corresponding path program 1 times [2024-06-28 01:58:38,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:38,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498809967] [2024-06-28 01:58:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:38,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:39,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498809967] [2024-06-28 01:58:39,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498809967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:39,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:39,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:58:39,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200878506] [2024-06-28 01:58:39,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:39,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:58:39,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:58:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:58:39,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:58:39,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:39,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:39,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:58:39,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:40,525 INFO L124 PetriNetUnfolderBase]: 2764/4342 cut-off events. [2024-06-28 01:58:40,525 INFO L125 PetriNetUnfolderBase]: For 3974/4004 co-relation queries the response was YES. [2024-06-28 01:58:40,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11560 conditions, 4342 events. 2764/4342 cut-off events. For 3974/4004 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 24592 event pairs, 1100 based on Foata normal form. 11/4349 useless extension candidates. Maximal degree in co-relation 11540. Up to 3990 conditions per place. [2024-06-28 01:58:40,549 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 63 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-06-28 01:58:40,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 81 transitions, 474 flow [2024-06-28 01:58:40,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:58:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:58:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-28 01:58:40,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-28 01:58:40,551 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 258 flow. Second operand 5 states and 124 transitions. [2024-06-28 01:58:40,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 81 transitions, 474 flow [2024-06-28 01:58:40,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 81 transitions, 445 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:40,556 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 286 flow [2024-06-28 01:58:40,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-06-28 01:58:40,557 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2024-06-28 01:58:40,557 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 286 flow [2024-06-28 01:58:40,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:40,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:40,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:40,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:58:40,558 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:40,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:40,558 INFO L85 PathProgramCache]: Analyzing trace with hash -973172079, now seen corresponding path program 1 times [2024-06-28 01:58:40,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:40,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714929885] [2024-06-28 01:58:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:40,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:42,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:42,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714929885] [2024-06-28 01:58:42,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714929885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:42,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:42,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:58:42,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012487864] [2024-06-28 01:58:42,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:42,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:58:42,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:42,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:58:42,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:58:42,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:58:42,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 286 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:42,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:42,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:58:42,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:43,549 INFO L124 PetriNetUnfolderBase]: 3302/5146 cut-off events. [2024-06-28 01:58:43,550 INFO L125 PetriNetUnfolderBase]: For 6104/6104 co-relation queries the response was YES. [2024-06-28 01:58:43,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14480 conditions, 5146 events. 3302/5146 cut-off events. For 6104/6104 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 29318 event pairs, 1327 based on Foata normal form. 2/5145 useless extension candidates. Maximal degree in co-relation 14458. Up to 4726 conditions per place. [2024-06-28 01:58:43,575 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 81 selfloop transitions, 14 changer transitions 0/102 dead transitions. [2024-06-28 01:58:43,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 616 flow [2024-06-28 01:58:43,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:58:43,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:58:43,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 01:58:43,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:58:43,579 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 286 flow. Second operand 6 states and 144 transitions. [2024-06-28 01:58:43,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 616 flow [2024-06-28 01:58:43,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 102 transitions, 575 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:43,585 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 382 flow [2024-06-28 01:58:43,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2024-06-28 01:58:43,587 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2024-06-28 01:58:43,587 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 382 flow [2024-06-28 01:58:43,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:43,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:43,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:43,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:58:43,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:43,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash -103776945, now seen corresponding path program 1 times [2024-06-28 01:58:43,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:43,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268343953] [2024-06-28 01:58:43,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:43,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:45,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:45,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268343953] [2024-06-28 01:58:45,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268343953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:45,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:45,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:58:45,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396295464] [2024-06-28 01:58:45,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:45,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:58:45,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:45,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:58:45,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:58:45,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:58:45,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 382 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:45,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:45,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:58:45,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:47,144 INFO L124 PetriNetUnfolderBase]: 3148/4732 cut-off events. [2024-06-28 01:58:47,145 INFO L125 PetriNetUnfolderBase]: For 9246/9396 co-relation queries the response was YES. [2024-06-28 01:58:47,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15087 conditions, 4732 events. 3148/4732 cut-off events. For 9246/9396 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 25999 event pairs, 894 based on Foata normal form. 38/4742 useless extension candidates. Maximal degree in co-relation 15062. Up to 4397 conditions per place. [2024-06-28 01:58:47,178 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 87 selfloop transitions, 24 changer transitions 0/122 dead transitions. [2024-06-28 01:58:47,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 122 transitions, 790 flow [2024-06-28 01:58:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:58:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:58:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-28 01:58:47,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-06-28 01:58:47,179 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 382 flow. Second operand 6 states and 160 transitions. [2024-06-28 01:58:47,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 122 transitions, 790 flow [2024-06-28 01:58:47,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 122 transitions, 778 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 01:58:47,188 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 508 flow [2024-06-28 01:58:47,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=508, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2024-06-28 01:58:47,189 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2024-06-28 01:58:47,189 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 508 flow [2024-06-28 01:58:47,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:47,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:47,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:47,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:58:47,190 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:47,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:47,190 INFO L85 PathProgramCache]: Analyzing trace with hash 269115855, now seen corresponding path program 2 times [2024-06-28 01:58:47,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:47,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163489923] [2024-06-28 01:58:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:47,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:49,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:49,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163489923] [2024-06-28 01:58:49,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163489923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:49,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:49,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:58:49,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098255707] [2024-06-28 01:58:49,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:49,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:58:49,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:49,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:58:49,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:58:49,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:58:49,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 508 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:49,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:49,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:58:49,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:50,543 INFO L124 PetriNetUnfolderBase]: 3251/4900 cut-off events. [2024-06-28 01:58:50,543 INFO L125 PetriNetUnfolderBase]: For 13163/13246 co-relation queries the response was YES. [2024-06-28 01:58:50,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17161 conditions, 4900 events. 3251/4900 cut-off events. For 13163/13246 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 27182 event pairs, 892 based on Foata normal form. 16/4894 useless extension candidates. Maximal degree in co-relation 17132. Up to 4531 conditions per place. [2024-06-28 01:58:50,572 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 82 selfloop transitions, 24 changer transitions 0/117 dead transitions. [2024-06-28 01:58:50,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 117 transitions, 820 flow [2024-06-28 01:58:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:58:50,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:58:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 01:58:50,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-28 01:58:50,574 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 508 flow. Second operand 6 states and 154 transitions. [2024-06-28 01:58:50,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 117 transitions, 820 flow [2024-06-28 01:58:50,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 804 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 01:58:50,587 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 550 flow [2024-06-28 01:58:50,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=550, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-06-28 01:58:50,588 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2024-06-28 01:58:50,588 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 550 flow [2024-06-28 01:58:50,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:50,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:50,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:50,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:58:50,589 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:50,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:50,589 INFO L85 PathProgramCache]: Analyzing trace with hash -854901580, now seen corresponding path program 1 times [2024-06-28 01:58:50,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:50,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156684984] [2024-06-28 01:58:50,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:50,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:52,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156684984] [2024-06-28 01:58:52,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156684984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:52,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:52,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:58:52,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749342244] [2024-06-28 01:58:52,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:52,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:58:52,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:52,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:58:52,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:58:52,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:58:52,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 550 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:52,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:52,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:58:52,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:54,210 INFO L124 PetriNetUnfolderBase]: 3258/4925 cut-off events. [2024-06-28 01:58:54,211 INFO L125 PetriNetUnfolderBase]: For 14384/14641 co-relation queries the response was YES. [2024-06-28 01:58:54,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17373 conditions, 4925 events. 3258/4925 cut-off events. For 14384/14641 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 27225 event pairs, 887 based on Foata normal form. 41/4942 useless extension candidates. Maximal degree in co-relation 17341. Up to 4544 conditions per place. [2024-06-28 01:58:54,236 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 117 selfloop transitions, 30 changer transitions 0/158 dead transitions. [2024-06-28 01:58:54,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 158 transitions, 1116 flow [2024-06-28 01:58:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-28 01:58:54,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-06-28 01:58:54,238 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 550 flow. Second operand 8 states and 214 transitions. [2024-06-28 01:58:54,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 158 transitions, 1116 flow [2024-06-28 01:58:54,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 158 transitions, 1064 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:54,250 INFO L231 Difference]: Finished difference. Result has 85 places, 95 transitions, 704 flow [2024-06-28 01:58:54,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=704, PETRI_PLACES=85, PETRI_TRANSITIONS=95} [2024-06-28 01:58:54,251 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 34 predicate places. [2024-06-28 01:58:54,251 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 95 transitions, 704 flow [2024-06-28 01:58:54,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:54,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:54,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:54,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:58:54,252 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:54,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:54,252 INFO L85 PathProgramCache]: Analyzing trace with hash 907176462, now seen corresponding path program 2 times [2024-06-28 01:58:54,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:54,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735220785] [2024-06-28 01:58:54,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:54,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:57,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:57,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735220785] [2024-06-28 01:58:57,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735220785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:57,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:57,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:58:57,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456781632] [2024-06-28 01:58:57,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:57,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:58:57,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:57,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:58:57,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:58:57,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:58:57,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 95 transitions, 704 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:57,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:57,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:58:57,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:58,567 INFO L124 PetriNetUnfolderBase]: 3294/4989 cut-off events. [2024-06-28 01:58:58,568 INFO L125 PetriNetUnfolderBase]: For 18385/18672 co-relation queries the response was YES. [2024-06-28 01:58:58,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18861 conditions, 4989 events. 3294/4989 cut-off events. For 18385/18672 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 27626 event pairs, 846 based on Foata normal form. 70/5035 useless extension candidates. Maximal degree in co-relation 18826. Up to 4556 conditions per place. [2024-06-28 01:58:58,599 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 112 selfloop transitions, 31 changer transitions 0/154 dead transitions. [2024-06-28 01:58:58,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 154 transitions, 1192 flow [2024-06-28 01:58:58,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 01:58:58,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5653495440729484 [2024-06-28 01:58:58,602 INFO L175 Difference]: Start difference. First operand has 85 places, 95 transitions, 704 flow. Second operand 7 states and 186 transitions. [2024-06-28 01:58:58,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 154 transitions, 1192 flow [2024-06-28 01:58:58,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 154 transitions, 1138 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:58,620 INFO L231 Difference]: Finished difference. Result has 88 places, 98 transitions, 759 flow [2024-06-28 01:58:58,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=759, PETRI_PLACES=88, PETRI_TRANSITIONS=98} [2024-06-28 01:58:58,621 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 37 predicate places. [2024-06-28 01:58:58,621 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 98 transitions, 759 flow [2024-06-28 01:58:58,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:58,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:58,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:58,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:58:58,622 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:58,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:58,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1136377494, now seen corresponding path program 1 times [2024-06-28 01:58:58,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:58,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189696595] [2024-06-28 01:58:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:58,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:01,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:01,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:01,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189696595] [2024-06-28 01:59:01,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189696595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:01,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:01,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:01,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084083307] [2024-06-28 01:59:01,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:01,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:01,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:01,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:01,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:01,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:01,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 98 transitions, 759 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:01,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:01,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:01,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:02,735 INFO L124 PetriNetUnfolderBase]: 3655/5442 cut-off events. [2024-06-28 01:59:02,736 INFO L125 PetriNetUnfolderBase]: For 21648/21652 co-relation queries the response was YES. [2024-06-28 01:59:02,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21120 conditions, 5442 events. 3655/5442 cut-off events. For 21648/21652 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 29479 event pairs, 973 based on Foata normal form. 6/5442 useless extension candidates. Maximal degree in co-relation 21085. Up to 5042 conditions per place. [2024-06-28 01:59:02,765 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 140 selfloop transitions, 28 changer transitions 0/175 dead transitions. [2024-06-28 01:59:02,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 175 transitions, 1465 flow [2024-06-28 01:59:02,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:02,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 01:59:02,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:59:02,767 INFO L175 Difference]: Start difference. First operand has 88 places, 98 transitions, 759 flow. Second operand 7 states and 182 transitions. [2024-06-28 01:59:02,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 175 transitions, 1465 flow [2024-06-28 01:59:02,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 175 transitions, 1376 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:02,785 INFO L231 Difference]: Finished difference. Result has 93 places, 117 transitions, 937 flow [2024-06-28 01:59:02,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=937, PETRI_PLACES=93, PETRI_TRANSITIONS=117} [2024-06-28 01:59:02,786 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 42 predicate places. [2024-06-28 01:59:02,786 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 117 transitions, 937 flow [2024-06-28 01:59:02,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:02,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:02,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:02,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:59:02,787 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:02,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:02,787 INFO L85 PathProgramCache]: Analyzing trace with hash 907181112, now seen corresponding path program 3 times [2024-06-28 01:59:02,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:02,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562777897] [2024-06-28 01:59:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:02,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:05,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:05,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562777897] [2024-06-28 01:59:05,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562777897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:05,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:05,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:05,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704876613] [2024-06-28 01:59:05,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:05,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:05,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:05,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:05,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:05,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:59:05,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 117 transitions, 937 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:05,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:05,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:59:05,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:06,966 INFO L124 PetriNetUnfolderBase]: 3460/5267 cut-off events. [2024-06-28 01:59:06,967 INFO L125 PetriNetUnfolderBase]: For 22935/23254 co-relation queries the response was YES. [2024-06-28 01:59:06,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21109 conditions, 5267 events. 3460/5267 cut-off events. For 22935/23254 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 29916 event pairs, 831 based on Foata normal form. 70/5228 useless extension candidates. Maximal degree in co-relation 21070. Up to 4507 conditions per place. [2024-06-28 01:59:06,997 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 109 selfloop transitions, 51 changer transitions 0/175 dead transitions. [2024-06-28 01:59:06,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 175 transitions, 1501 flow [2024-06-28 01:59:06,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:06,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 01:59:06,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 01:59:06,999 INFO L175 Difference]: Start difference. First operand has 93 places, 117 transitions, 937 flow. Second operand 7 states and 188 transitions. [2024-06-28 01:59:06,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 175 transitions, 1501 flow [2024-06-28 01:59:07,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 175 transitions, 1489 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 01:59:07,019 INFO L231 Difference]: Finished difference. Result has 99 places, 123 transitions, 1098 flow [2024-06-28 01:59:07,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1098, PETRI_PLACES=99, PETRI_TRANSITIONS=123} [2024-06-28 01:59:07,020 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 48 predicate places. [2024-06-28 01:59:07,020 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 123 transitions, 1098 flow [2024-06-28 01:59:07,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:07,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:07,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:07,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:59:07,021 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:07,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:07,021 INFO L85 PathProgramCache]: Analyzing trace with hash -247104210, now seen corresponding path program 2 times [2024-06-28 01:59:07,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:07,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692322934] [2024-06-28 01:59:07,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:07,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:09,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:09,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692322934] [2024-06-28 01:59:09,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692322934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:09,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:09,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:09,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964572548] [2024-06-28 01:59:09,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:09,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:09,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:09,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:09,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:09,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:09,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 123 transitions, 1098 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:09,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:09,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:09,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:10,780 INFO L124 PetriNetUnfolderBase]: 3740/5595 cut-off events. [2024-06-28 01:59:10,780 INFO L125 PetriNetUnfolderBase]: For 26723/26744 co-relation queries the response was YES. [2024-06-28 01:59:10,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23231 conditions, 5595 events. 3740/5595 cut-off events. For 26723/26744 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30573 event pairs, 967 based on Foata normal form. 16/5604 useless extension candidates. Maximal degree in co-relation 23189. Up to 5148 conditions per place. [2024-06-28 01:59:10,819 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 143 selfloop transitions, 36 changer transitions 0/186 dead transitions. [2024-06-28 01:59:10,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 186 transitions, 1736 flow [2024-06-28 01:59:10,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:59:10,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379939209726444 [2024-06-28 01:59:10,821 INFO L175 Difference]: Start difference. First operand has 99 places, 123 transitions, 1098 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:59:10,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 186 transitions, 1736 flow [2024-06-28 01:59:10,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 186 transitions, 1683 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:10,852 INFO L231 Difference]: Finished difference. Result has 105 places, 133 transitions, 1226 flow [2024-06-28 01:59:10,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1226, PETRI_PLACES=105, PETRI_TRANSITIONS=133} [2024-06-28 01:59:10,852 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 54 predicate places. [2024-06-28 01:59:10,853 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 133 transitions, 1226 flow [2024-06-28 01:59:10,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:10,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:10,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:10,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:59:10,853 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:10,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:10,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1084312818, now seen corresponding path program 3 times [2024-06-28 01:59:10,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:10,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114975566] [2024-06-28 01:59:10,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:10,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:13,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:13,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114975566] [2024-06-28 01:59:13,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114975566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:13,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:13,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:13,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484581791] [2024-06-28 01:59:13,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:13,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:13,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:13,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:13,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:13,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:13,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 133 transitions, 1226 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:13,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:13,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:13,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:14,883 INFO L124 PetriNetUnfolderBase]: 3735/5588 cut-off events. [2024-06-28 01:59:14,883 INFO L125 PetriNetUnfolderBase]: For 28108/28129 co-relation queries the response was YES. [2024-06-28 01:59:14,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23645 conditions, 5588 events. 3735/5588 cut-off events. For 28108/28129 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30500 event pairs, 967 based on Foata normal form. 16/5597 useless extension candidates. Maximal degree in co-relation 23599. Up to 5143 conditions per place. [2024-06-28 01:59:14,923 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 142 selfloop transitions, 35 changer transitions 0/184 dead transitions. [2024-06-28 01:59:14,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 184 transitions, 1746 flow [2024-06-28 01:59:14,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:59:14,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-28 01:59:14,925 INFO L175 Difference]: Start difference. First operand has 105 places, 133 transitions, 1226 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:59:14,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 184 transitions, 1746 flow [2024-06-28 01:59:14,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 184 transitions, 1711 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:14,959 INFO L231 Difference]: Finished difference. Result has 110 places, 133 transitions, 1269 flow [2024-06-28 01:59:14,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1269, PETRI_PLACES=110, PETRI_TRANSITIONS=133} [2024-06-28 01:59:14,961 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 59 predicate places. [2024-06-28 01:59:14,961 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 133 transitions, 1269 flow [2024-06-28 01:59:14,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:14,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:14,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:14,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:59:14,961 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:14,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:14,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1084312632, now seen corresponding path program 4 times [2024-06-28 01:59:14,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:14,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652199392] [2024-06-28 01:59:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:14,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:17,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:17,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652199392] [2024-06-28 01:59:17,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652199392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:17,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:17,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:17,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019004223] [2024-06-28 01:59:17,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:17,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:17,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:17,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:17,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:17,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:59:17,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 133 transitions, 1269 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:17,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:17,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:59:17,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:18,841 INFO L124 PetriNetUnfolderBase]: 3541/5394 cut-off events. [2024-06-28 01:59:18,841 INFO L125 PetriNetUnfolderBase]: For 32423/32654 co-relation queries the response was YES. [2024-06-28 01:59:18,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23660 conditions, 5394 events. 3541/5394 cut-off events. For 32423/32654 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30616 event pairs, 848 based on Foata normal form. 42/5325 useless extension candidates. Maximal degree in co-relation 23612. Up to 4568 conditions per place. [2024-06-28 01:59:18,881 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 108 selfloop transitions, 53 changer transitions 0/181 dead transitions. [2024-06-28 01:59:18,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 181 transitions, 1739 flow [2024-06-28 01:59:18,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:18,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:18,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 01:59:18,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:59:18,883 INFO L175 Difference]: Start difference. First operand has 110 places, 133 transitions, 1269 flow. Second operand 7 states and 182 transitions. [2024-06-28 01:59:18,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 181 transitions, 1739 flow [2024-06-28 01:59:18,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 181 transitions, 1694 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:18,916 INFO L231 Difference]: Finished difference. Result has 114 places, 133 transitions, 1339 flow [2024-06-28 01:59:18,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1339, PETRI_PLACES=114, PETRI_TRANSITIONS=133} [2024-06-28 01:59:18,916 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 63 predicate places. [2024-06-28 01:59:18,916 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 133 transitions, 1339 flow [2024-06-28 01:59:18,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:18,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:18,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:18,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:59:18,917 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:18,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:18,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1084558896, now seen corresponding path program 1 times [2024-06-28 01:59:18,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:18,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624824763] [2024-06-28 01:59:18,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:18,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:20,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:20,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624824763] [2024-06-28 01:59:20,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624824763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:20,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:20,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:20,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384083500] [2024-06-28 01:59:20,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:20,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:20,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:20,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:20,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:20,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:20,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 133 transitions, 1339 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:20,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:20,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:20,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:22,329 INFO L124 PetriNetUnfolderBase]: 3719/5794 cut-off events. [2024-06-28 01:59:22,329 INFO L125 PetriNetUnfolderBase]: For 33837/33839 co-relation queries the response was YES. [2024-06-28 01:59:22,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24387 conditions, 5794 events. 3719/5794 cut-off events. For 33837/33839 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 33224 event pairs, 1182 based on Foata normal form. 4/5795 useless extension candidates. Maximal degree in co-relation 24338. Up to 5263 conditions per place. [2024-06-28 01:59:22,368 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 153 selfloop transitions, 17 changer transitions 0/177 dead transitions. [2024-06-28 01:59:22,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 177 transitions, 1815 flow [2024-06-28 01:59:22,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:59:22,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:59:22,370 INFO L175 Difference]: Start difference. First operand has 114 places, 133 transitions, 1339 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:59:22,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 177 transitions, 1815 flow [2024-06-28 01:59:22,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 177 transitions, 1677 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:22,406 INFO L231 Difference]: Finished difference. Result has 115 places, 136 transitions, 1275 flow [2024-06-28 01:59:22,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1275, PETRI_PLACES=115, PETRI_TRANSITIONS=136} [2024-06-28 01:59:22,407 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 64 predicate places. [2024-06-28 01:59:22,407 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 136 transitions, 1275 flow [2024-06-28 01:59:22,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:22,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:22,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:22,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:59:22,408 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:22,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1945873943, now seen corresponding path program 1 times [2024-06-28 01:59:22,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:22,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197788078] [2024-06-28 01:59:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:22,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:25,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:25,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197788078] [2024-06-28 01:59:25,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197788078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:25,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:25,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:25,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166683943] [2024-06-28 01:59:25,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:25,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:25,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:25,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:25,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:25,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:25,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 136 transitions, 1275 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:25,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:25,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:25,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:26,639 INFO L124 PetriNetUnfolderBase]: 3750/5616 cut-off events. [2024-06-28 01:59:26,639 INFO L125 PetriNetUnfolderBase]: For 34109/34117 co-relation queries the response was YES. [2024-06-28 01:59:26,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24564 conditions, 5616 events. 3750/5616 cut-off events. For 34109/34117 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 30641 event pairs, 861 based on Foata normal form. 10/5623 useless extension candidates. Maximal degree in co-relation 24514. Up to 5172 conditions per place. [2024-06-28 01:59:26,672 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 184 selfloop transitions, 28 changer transitions 0/219 dead transitions. [2024-06-28 01:59:26,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 219 transitions, 2048 flow [2024-06-28 01:59:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:26,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:59:26,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-28 01:59:26,673 INFO L175 Difference]: Start difference. First operand has 115 places, 136 transitions, 1275 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:59:26,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 219 transitions, 2048 flow [2024-06-28 01:59:26,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 219 transitions, 1998 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:26,712 INFO L231 Difference]: Finished difference. Result has 120 places, 151 transitions, 1460 flow [2024-06-28 01:59:26,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1460, PETRI_PLACES=120, PETRI_TRANSITIONS=151} [2024-06-28 01:59:26,713 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 69 predicate places. [2024-06-28 01:59:26,713 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 151 transitions, 1460 flow [2024-06-28 01:59:26,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:26,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:26,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:26,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:59:26,714 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:26,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:26,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1942154873, now seen corresponding path program 2 times [2024-06-28 01:59:26,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:26,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816820648] [2024-06-28 01:59:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:26,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:29,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:29,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816820648] [2024-06-28 01:59:29,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816820648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:29,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:29,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:29,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478121854] [2024-06-28 01:59:29,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:29,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:29,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:29,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:29,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:29,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 151 transitions, 1460 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:29,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:29,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:29,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:31,541 INFO L124 PetriNetUnfolderBase]: 3817/5717 cut-off events. [2024-06-28 01:59:31,541 INFO L125 PetriNetUnfolderBase]: For 39726/39728 co-relation queries the response was YES. [2024-06-28 01:59:31,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26191 conditions, 5717 events. 3817/5717 cut-off events. For 39726/39728 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31257 event pairs, 890 based on Foata normal form. 2/5713 useless extension candidates. Maximal degree in co-relation 26138. Up to 4949 conditions per place. [2024-06-28 01:59:31,583 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 169 selfloop transitions, 54 changer transitions 0/230 dead transitions. [2024-06-28 01:59:31,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 230 transitions, 2332 flow [2024-06-28 01:59:31,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 01:59:31,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2024-06-28 01:59:31,585 INFO L175 Difference]: Start difference. First operand has 120 places, 151 transitions, 1460 flow. Second operand 8 states and 213 transitions. [2024-06-28 01:59:31,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 230 transitions, 2332 flow [2024-06-28 01:59:31,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 230 transitions, 2287 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:31,635 INFO L231 Difference]: Finished difference. Result has 127 places, 163 transitions, 1670 flow [2024-06-28 01:59:31,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1670, PETRI_PLACES=127, PETRI_TRANSITIONS=163} [2024-06-28 01:59:31,636 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 76 predicate places. [2024-06-28 01:59:31,636 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 163 transitions, 1670 flow [2024-06-28 01:59:31,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:31,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:31,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:31,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:59:31,637 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:31,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:31,637 INFO L85 PathProgramCache]: Analyzing trace with hash 867965487, now seen corresponding path program 3 times [2024-06-28 01:59:31,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:31,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803279921] [2024-06-28 01:59:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:31,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:34,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:34,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803279921] [2024-06-28 01:59:34,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803279921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:34,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:34,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:34,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078292867] [2024-06-28 01:59:34,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:34,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:34,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:34,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:34,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:34,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:34,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 163 transitions, 1670 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:34,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:34,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:34,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:36,617 INFO L124 PetriNetUnfolderBase]: 3812/5710 cut-off events. [2024-06-28 01:59:36,617 INFO L125 PetriNetUnfolderBase]: For 45069/45071 co-relation queries the response was YES. [2024-06-28 01:59:36,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27671 conditions, 5710 events. 3812/5710 cut-off events. For 45069/45071 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31200 event pairs, 890 based on Foata normal form. 2/5706 useless extension candidates. Maximal degree in co-relation 27614. Up to 4944 conditions per place. [2024-06-28 01:59:36,656 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 165 selfloop transitions, 57 changer transitions 0/229 dead transitions. [2024-06-28 01:59:36,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 229 transitions, 2396 flow [2024-06-28 01:59:36,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:59:36,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-06-28 01:59:36,658 INFO L175 Difference]: Start difference. First operand has 127 places, 163 transitions, 1670 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:59:36,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 229 transitions, 2396 flow [2024-06-28 01:59:36,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 229 transitions, 2327 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:36,714 INFO L231 Difference]: Finished difference. Result has 132 places, 164 transitions, 1734 flow [2024-06-28 01:59:36,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1734, PETRI_PLACES=132, PETRI_TRANSITIONS=164} [2024-06-28 01:59:36,715 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 81 predicate places. [2024-06-28 01:59:36,715 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 164 transitions, 1734 flow [2024-06-28 01:59:36,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:36,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:36,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:36,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:59:36,715 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:36,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash 929705623, now seen corresponding path program 4 times [2024-06-28 01:59:36,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:36,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818121365] [2024-06-28 01:59:36,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:36,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:39,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:39,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818121365] [2024-06-28 01:59:39,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818121365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:39,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:39,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:39,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306710230] [2024-06-28 01:59:39,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:39,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:39,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:39,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:39,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:39,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:39,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 164 transitions, 1734 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:39,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:39,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:39,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:41,117 INFO L124 PetriNetUnfolderBase]: 3843/5765 cut-off events. [2024-06-28 01:59:41,117 INFO L125 PetriNetUnfolderBase]: For 48199/48216 co-relation queries the response was YES. [2024-06-28 01:59:41,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28359 conditions, 5765 events. 3843/5765 cut-off events. For 48199/48216 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 31627 event pairs, 888 based on Foata normal form. 6/5758 useless extension candidates. Maximal degree in co-relation 28300. Up to 4976 conditions per place. [2024-06-28 01:59:41,160 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 161 selfloop transitions, 63 changer transitions 0/231 dead transitions. [2024-06-28 01:59:41,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 231 transitions, 2513 flow [2024-06-28 01:59:41,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:41,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:59:41,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-28 01:59:41,163 INFO L175 Difference]: Start difference. First operand has 132 places, 164 transitions, 1734 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:59:41,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 231 transitions, 2513 flow [2024-06-28 01:59:41,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 231 transitions, 2408 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:41,216 INFO L231 Difference]: Finished difference. Result has 136 places, 169 transitions, 1852 flow [2024-06-28 01:59:41,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1852, PETRI_PLACES=136, PETRI_TRANSITIONS=169} [2024-06-28 01:59:41,216 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 85 predicate places. [2024-06-28 01:59:41,216 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 169 transitions, 1852 flow [2024-06-28 01:59:41,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:41,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:41,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:41,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:59:41,217 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:41,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:41,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1783006861, now seen corresponding path program 5 times [2024-06-28 01:59:41,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:41,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351699906] [2024-06-28 01:59:41,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:41,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:43,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:43,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351699906] [2024-06-28 01:59:43,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351699906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:43,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:43,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:43,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538514756] [2024-06-28 01:59:43,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:43,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:43,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:43,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:43,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:43,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:43,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 169 transitions, 1852 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:43,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:43,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:43,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:45,874 INFO L124 PetriNetUnfolderBase]: 3874/5824 cut-off events. [2024-06-28 01:59:45,874 INFO L125 PetriNetUnfolderBase]: For 51635/51652 co-relation queries the response was YES. [2024-06-28 01:59:45,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29126 conditions, 5824 events. 3874/5824 cut-off events. For 51635/51652 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 32079 event pairs, 888 based on Foata normal form. 6/5817 useless extension candidates. Maximal degree in co-relation 29065. Up to 5008 conditions per place. [2024-06-28 01:59:45,919 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 164 selfloop transitions, 63 changer transitions 0/234 dead transitions. [2024-06-28 01:59:45,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 234 transitions, 2621 flow [2024-06-28 01:59:45,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:45,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:59:45,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2024-06-28 01:59:45,921 INFO L175 Difference]: Start difference. First operand has 136 places, 169 transitions, 1852 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:59:45,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 234 transitions, 2621 flow [2024-06-28 01:59:45,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 234 transitions, 2532 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:45,992 INFO L231 Difference]: Finished difference. Result has 140 places, 172 transitions, 1938 flow [2024-06-28 01:59:45,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1938, PETRI_PLACES=140, PETRI_TRANSITIONS=172} [2024-06-28 01:59:45,992 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 89 predicate places. [2024-06-28 01:59:45,993 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 172 transitions, 1938 flow [2024-06-28 01:59:45,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:45,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:45,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:45,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:59:45,993 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:45,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:45,993 INFO L85 PathProgramCache]: Analyzing trace with hash -746039469, now seen corresponding path program 6 times [2024-06-28 01:59:45,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:45,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921985584] [2024-06-28 01:59:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:45,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:48,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:48,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921985584] [2024-06-28 01:59:48,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921985584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:48,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:48,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:48,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287469606] [2024-06-28 01:59:48,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:48,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:48,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:48,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:48,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:48,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:48,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 172 transitions, 1938 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:48,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:48,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:48,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:50,588 INFO L124 PetriNetUnfolderBase]: 3869/5817 cut-off events. [2024-06-28 01:59:50,589 INFO L125 PetriNetUnfolderBase]: For 54640/54657 co-relation queries the response was YES. [2024-06-28 01:59:50,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29238 conditions, 5817 events. 3869/5817 cut-off events. For 54640/54657 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 31998 event pairs, 890 based on Foata normal form. 6/5810 useless extension candidates. Maximal degree in co-relation 29176. Up to 5003 conditions per place. [2024-06-28 01:59:50,633 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 163 selfloop transitions, 62 changer transitions 0/232 dead transitions. [2024-06-28 01:59:50,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 232 transitions, 2586 flow [2024-06-28 01:59:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:59:50,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-28 01:59:50,634 INFO L175 Difference]: Start difference. First operand has 140 places, 172 transitions, 1938 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:59:50,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 232 transitions, 2586 flow [2024-06-28 01:59:50,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 232 transitions, 2394 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:59:50,714 INFO L231 Difference]: Finished difference. Result has 141 places, 172 transitions, 1878 flow [2024-06-28 01:59:50,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1878, PETRI_PLACES=141, PETRI_TRANSITIONS=172} [2024-06-28 01:59:50,715 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 90 predicate places. [2024-06-28 01:59:50,715 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 172 transitions, 1878 flow [2024-06-28 01:59:50,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:50,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:50,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:50,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:59:50,715 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:50,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2144736551, now seen corresponding path program 1 times [2024-06-28 01:59:50,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:50,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761179332] [2024-06-28 01:59:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:50,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:53,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:53,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761179332] [2024-06-28 01:59:53,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761179332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:53,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:53,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:53,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006090377] [2024-06-28 01:59:53,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:53,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:53,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:53,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:53,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:53,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:59:53,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 172 transitions, 1878 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:53,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:53,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:59:53,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:55,534 INFO L124 PetriNetUnfolderBase]: 3785/5795 cut-off events. [2024-06-28 01:59:55,534 INFO L125 PetriNetUnfolderBase]: For 63620/63768 co-relation queries the response was YES. [2024-06-28 01:59:55,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29619 conditions, 5795 events. 3785/5795 cut-off events. For 63620/63768 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 33405 event pairs, 435 based on Foata normal form. 33/5680 useless extension candidates. Maximal degree in co-relation 29557. Up to 4764 conditions per place. [2024-06-28 01:59:55,574 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 174 selfloop transitions, 53 changer transitions 0/258 dead transitions. [2024-06-28 01:59:55,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 258 transitions, 2724 flow [2024-06-28 01:59:55,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:59:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:59:55,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-28 01:59:55,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697399527186762 [2024-06-28 01:59:55,575 INFO L175 Difference]: Start difference. First operand has 141 places, 172 transitions, 1878 flow. Second operand 9 states and 241 transitions. [2024-06-28 01:59:55,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 258 transitions, 2724 flow [2024-06-28 01:59:55,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 258 transitions, 2585 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:55,643 INFO L231 Difference]: Finished difference. Result has 144 places, 176 transitions, 1908 flow [2024-06-28 01:59:55,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1908, PETRI_PLACES=144, PETRI_TRANSITIONS=176} [2024-06-28 01:59:55,644 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 93 predicate places. [2024-06-28 01:59:55,644 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 176 transitions, 1908 flow [2024-06-28 01:59:55,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:55,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:55,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:55,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:59:55,645 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:55,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:55,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1021658969, now seen corresponding path program 2 times [2024-06-28 01:59:55,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:55,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676625594] [2024-06-28 01:59:55,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:55,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:58,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:58,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:58,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676625594] [2024-06-28 01:59:58,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676625594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:58,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:58,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:58,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704184739] [2024-06-28 01:59:58,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:58,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:58,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:58,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:58,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:58,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:59:58,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 176 transitions, 1908 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:58,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:58,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:59:58,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:00,369 INFO L124 PetriNetUnfolderBase]: 3773/5779 cut-off events. [2024-06-28 02:00:00,369 INFO L125 PetriNetUnfolderBase]: For 68615/68812 co-relation queries the response was YES. [2024-06-28 02:00:00,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29967 conditions, 5779 events. 3773/5779 cut-off events. For 68615/68812 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 33420 event pairs, 676 based on Foata normal form. 25/5656 useless extension candidates. Maximal degree in co-relation 29904. Up to 4940 conditions per place. [2024-06-28 02:00:00,414 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 164 selfloop transitions, 49 changer transitions 0/244 dead transitions. [2024-06-28 02:00:00,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 244 transitions, 2552 flow [2024-06-28 02:00:00,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:00,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:00,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 02:00:00,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-06-28 02:00:00,422 INFO L175 Difference]: Start difference. First operand has 144 places, 176 transitions, 1908 flow. Second operand 8 states and 212 transitions. [2024-06-28 02:00:00,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 244 transitions, 2552 flow [2024-06-28 02:00:00,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 244 transitions, 2460 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:00,500 INFO L231 Difference]: Finished difference. Result has 147 places, 176 transitions, 1924 flow [2024-06-28 02:00:00,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1924, PETRI_PLACES=147, PETRI_TRANSITIONS=176} [2024-06-28 02:00:00,501 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 96 predicate places. [2024-06-28 02:00:00,501 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 176 transitions, 1924 flow [2024-06-28 02:00:00,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:00,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:00,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:00,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:00:00,502 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:00,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:00,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1136950139, now seen corresponding path program 3 times [2024-06-28 02:00:00,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:00,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529507264] [2024-06-28 02:00:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:00,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:03,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:03,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529507264] [2024-06-28 02:00:03,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529507264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:03,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:03,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:03,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790740444] [2024-06-28 02:00:03,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:03,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:03,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:03,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:03,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:03,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 02:00:03,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 176 transitions, 1924 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:03,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:03,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 02:00:03,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:05,394 INFO L124 PetriNetUnfolderBase]: 3861/5903 cut-off events. [2024-06-28 02:00:05,394 INFO L125 PetriNetUnfolderBase]: For 72623/72764 co-relation queries the response was YES. [2024-06-28 02:00:05,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30845 conditions, 5903 events. 3861/5903 cut-off events. For 72623/72764 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 34172 event pairs, 699 based on Foata normal form. 7/5737 useless extension candidates. Maximal degree in co-relation 30780. Up to 4876 conditions per place. [2024-06-28 02:00:05,507 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 140 selfloop transitions, 69 changer transitions 0/240 dead transitions. [2024-06-28 02:00:05,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 240 transitions, 2564 flow [2024-06-28 02:00:05,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 02:00:05,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-06-28 02:00:05,509 INFO L175 Difference]: Start difference. First operand has 147 places, 176 transitions, 1924 flow. Second operand 8 states and 212 transitions. [2024-06-28 02:00:05,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 240 transitions, 2564 flow [2024-06-28 02:00:05,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 240 transitions, 2456 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 02:00:05,604 INFO L231 Difference]: Finished difference. Result has 148 places, 178 transitions, 1996 flow [2024-06-28 02:00:05,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1996, PETRI_PLACES=148, PETRI_TRANSITIONS=178} [2024-06-28 02:00:05,605 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 97 predicate places. [2024-06-28 02:00:05,605 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 178 transitions, 1996 flow [2024-06-28 02:00:05,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:05,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:05,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:05,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:00:05,605 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:05,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:05,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1137134837, now seen corresponding path program 1 times [2024-06-28 02:00:05,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:05,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434625449] [2024-06-28 02:00:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:05,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:08,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:08,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:08,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434625449] [2024-06-28 02:00:08,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434625449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:08,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:08,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:08,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374803594] [2024-06-28 02:00:08,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:08,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:08,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:08,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:08,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:08,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:08,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 178 transitions, 1996 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:08,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:08,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:08,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:10,696 INFO L124 PetriNetUnfolderBase]: 4183/6279 cut-off events. [2024-06-28 02:00:10,696 INFO L125 PetriNetUnfolderBase]: For 72030/72042 co-relation queries the response was YES. [2024-06-28 02:00:10,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32454 conditions, 6279 events. 4183/6279 cut-off events. For 72030/72042 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 34945 event pairs, 814 based on Foata normal form. 16/6289 useless extension candidates. Maximal degree in co-relation 32388. Up to 5740 conditions per place. [2024-06-28 02:00:10,818 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 201 selfloop transitions, 37 changer transitions 0/245 dead transitions. [2024-06-28 02:00:10,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 245 transitions, 2696 flow [2024-06-28 02:00:10,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:10,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 02:00:10,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-28 02:00:10,819 INFO L175 Difference]: Start difference. First operand has 148 places, 178 transitions, 1996 flow. Second operand 8 states and 205 transitions. [2024-06-28 02:00:10,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 245 transitions, 2696 flow [2024-06-28 02:00:10,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 245 transitions, 2542 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:00:10,917 INFO L231 Difference]: Finished difference. Result has 150 places, 180 transitions, 1941 flow [2024-06-28 02:00:10,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1941, PETRI_PLACES=150, PETRI_TRANSITIONS=180} [2024-06-28 02:00:10,917 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 99 predicate places. [2024-06-28 02:00:10,917 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 180 transitions, 1941 flow [2024-06-28 02:00:10,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:10,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:10,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:10,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:00:10,918 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:10,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:10,918 INFO L85 PathProgramCache]: Analyzing trace with hash 245180323, now seen corresponding path program 4 times [2024-06-28 02:00:10,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:10,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833755020] [2024-06-28 02:00:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:10,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:13,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:13,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833755020] [2024-06-28 02:00:13,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833755020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:13,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:13,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:13,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597751388] [2024-06-28 02:00:13,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:13,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:13,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:13,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:13,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:13,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 02:00:13,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 180 transitions, 1941 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:13,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:13,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 02:00:13,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:15,613 INFO L124 PetriNetUnfolderBase]: 3930/6004 cut-off events. [2024-06-28 02:00:15,613 INFO L125 PetriNetUnfolderBase]: For 79495/79658 co-relation queries the response was YES. [2024-06-28 02:00:15,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31889 conditions, 6004 events. 3930/6004 cut-off events. For 79495/79658 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 34624 event pairs, 708 based on Foata normal form. 12/5832 useless extension candidates. Maximal degree in co-relation 31822. Up to 4939 conditions per place. [2024-06-28 02:00:15,658 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 141 selfloop transitions, 69 changer transitions 0/242 dead transitions. [2024-06-28 02:00:15,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 242 transitions, 2589 flow [2024-06-28 02:00:15,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:15,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 02:00:15,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 02:00:15,659 INFO L175 Difference]: Start difference. First operand has 150 places, 180 transitions, 1941 flow. Second operand 8 states and 208 transitions. [2024-06-28 02:00:15,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 242 transitions, 2589 flow [2024-06-28 02:00:15,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 242 transitions, 2510 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:00:15,755 INFO L231 Difference]: Finished difference. Result has 152 places, 182 transitions, 2046 flow [2024-06-28 02:00:15,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2046, PETRI_PLACES=152, PETRI_TRANSITIONS=182} [2024-06-28 02:00:15,756 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 101 predicate places. [2024-06-28 02:00:15,756 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 182 transitions, 2046 flow [2024-06-28 02:00:15,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:15,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:15,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:15,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:00:15,756 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:15,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:15,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1652378543, now seen corresponding path program 2 times [2024-06-28 02:00:15,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:15,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090850499] [2024-06-28 02:00:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:15,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:18,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:18,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090850499] [2024-06-28 02:00:18,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090850499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:18,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:18,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:18,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959470719] [2024-06-28 02:00:18,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:18,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:18,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:18,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:18,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:18,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:18,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 182 transitions, 2046 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:18,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:18,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:18,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:20,498 INFO L124 PetriNetUnfolderBase]: 4220/6356 cut-off events. [2024-06-28 02:00:20,498 INFO L125 PetriNetUnfolderBase]: For 78684/78714 co-relation queries the response was YES. [2024-06-28 02:00:20,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33324 conditions, 6356 events. 4220/6356 cut-off events. For 78684/78714 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 35587 event pairs, 821 based on Foata normal form. 24/6373 useless extension candidates. Maximal degree in co-relation 33256. Up to 5795 conditions per place. [2024-06-28 02:00:20,552 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 203 selfloop transitions, 37 changer transitions 0/247 dead transitions. [2024-06-28 02:00:20,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 247 transitions, 2756 flow [2024-06-28 02:00:20,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:20,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:00:20,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-28 02:00:20,553 INFO L175 Difference]: Start difference. First operand has 152 places, 182 transitions, 2046 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:00:20,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 247 transitions, 2756 flow [2024-06-28 02:00:20,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 247 transitions, 2598 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:00:20,671 INFO L231 Difference]: Finished difference. Result has 154 places, 184 transitions, 1991 flow [2024-06-28 02:00:20,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1991, PETRI_PLACES=154, PETRI_TRANSITIONS=184} [2024-06-28 02:00:20,672 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 103 predicate places. [2024-06-28 02:00:20,672 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 184 transitions, 1991 flow [2024-06-28 02:00:20,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:20,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:20,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:20,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:00:20,673 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:20,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:20,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1416203183, now seen corresponding path program 3 times [2024-06-28 02:00:20,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:20,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938510927] [2024-06-28 02:00:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:20,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:23,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:23,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938510927] [2024-06-28 02:00:23,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938510927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:23,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:23,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:23,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730429200] [2024-06-28 02:00:23,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:23,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:23,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:23,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:23,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:23,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:23,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 184 transitions, 1991 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:23,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:23,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:23,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:25,409 INFO L124 PetriNetUnfolderBase]: 4270/6434 cut-off events. [2024-06-28 02:00:25,409 INFO L125 PetriNetUnfolderBase]: For 81280/81310 co-relation queries the response was YES. [2024-06-28 02:00:25,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33683 conditions, 6434 events. 4270/6434 cut-off events. For 81280/81310 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 36079 event pairs, 833 based on Foata normal form. 24/6451 useless extension candidates. Maximal degree in co-relation 33614. Up to 5869 conditions per place. [2024-06-28 02:00:25,454 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 204 selfloop transitions, 38 changer transitions 0/249 dead transitions. [2024-06-28 02:00:25,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 249 transitions, 2709 flow [2024-06-28 02:00:25,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 02:00:25,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 02:00:25,457 INFO L175 Difference]: Start difference. First operand has 154 places, 184 transitions, 1991 flow. Second operand 8 states and 200 transitions. [2024-06-28 02:00:25,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 249 transitions, 2709 flow [2024-06-28 02:00:25,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 249 transitions, 2626 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:00:25,569 INFO L231 Difference]: Finished difference. Result has 156 places, 186 transitions, 2017 flow [2024-06-28 02:00:25,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2017, PETRI_PLACES=156, PETRI_TRANSITIONS=186} [2024-06-28 02:00:25,570 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 105 predicate places. [2024-06-28 02:00:25,570 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 186 transitions, 2017 flow [2024-06-28 02:00:25,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:25,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:25,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:25,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:00:25,570 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:25,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:25,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1415906513, now seen corresponding path program 4 times [2024-06-28 02:00:25,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:25,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421772606] [2024-06-28 02:00:25,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:25,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:28,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:28,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421772606] [2024-06-28 02:00:28,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421772606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:28,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:28,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:28,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004918126] [2024-06-28 02:00:28,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:28,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:28,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:28,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:28,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:28,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:28,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 186 transitions, 2017 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:28,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:28,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:28,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:30,061 INFO L124 PetriNetUnfolderBase]: 4262/6418 cut-off events. [2024-06-28 02:00:30,061 INFO L125 PetriNetUnfolderBase]: For 84747/84777 co-relation queries the response was YES. [2024-06-28 02:00:30,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34004 conditions, 6418 events. 4262/6418 cut-off events. For 84747/84777 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 36012 event pairs, 733 based on Foata normal form. 24/6435 useless extension candidates. Maximal degree in co-relation 33934. Up to 5661 conditions per place. [2024-06-28 02:00:30,121 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 201 selfloop transitions, 46 changer transitions 0/254 dead transitions. [2024-06-28 02:00:30,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 254 transitions, 2781 flow [2024-06-28 02:00:30,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:00:30,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-28 02:00:30,130 INFO L175 Difference]: Start difference. First operand has 156 places, 186 transitions, 2017 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:00:30,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 254 transitions, 2781 flow [2024-06-28 02:00:30,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 254 transitions, 2692 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:00:30,265 INFO L231 Difference]: Finished difference. Result has 159 places, 190 transitions, 2105 flow [2024-06-28 02:00:30,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2105, PETRI_PLACES=159, PETRI_TRANSITIONS=190} [2024-06-28 02:00:30,265 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 108 predicate places. [2024-06-28 02:00:30,266 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 190 transitions, 2105 flow [2024-06-28 02:00:30,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:30,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:30,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:30,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:00:30,266 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:30,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:30,267 INFO L85 PathProgramCache]: Analyzing trace with hash -659990855, now seen corresponding path program 1 times [2024-06-28 02:00:30,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:30,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071650447] [2024-06-28 02:00:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:30,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:31,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:31,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071650447] [2024-06-28 02:00:31,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071650447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:31,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:31,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:00:31,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679872323] [2024-06-28 02:00:31,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:31,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:00:31,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:31,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:00:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:00:31,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 02:00:31,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 190 transitions, 2105 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:31,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:31,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 02:00:31,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:33,317 INFO L124 PetriNetUnfolderBase]: 3962/6315 cut-off events. [2024-06-28 02:00:33,318 INFO L125 PetriNetUnfolderBase]: For 87792/87870 co-relation queries the response was YES. [2024-06-28 02:00:33,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32816 conditions, 6315 events. 3962/6315 cut-off events. For 87792/87870 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 38182 event pairs, 1120 based on Foata normal form. 78/6381 useless extension candidates. Maximal degree in co-relation 32744. Up to 5576 conditions per place. [2024-06-28 02:00:33,374 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 177 selfloop transitions, 13 changer transitions 0/213 dead transitions. [2024-06-28 02:00:33,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 213 transitions, 2573 flow [2024-06-28 02:00:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:00:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:00:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 02:00:33,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-28 02:00:33,376 INFO L175 Difference]: Start difference. First operand has 159 places, 190 transitions, 2105 flow. Second operand 5 states and 121 transitions. [2024-06-28 02:00:33,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 213 transitions, 2573 flow [2024-06-28 02:00:33,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 213 transitions, 2500 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 02:00:33,503 INFO L231 Difference]: Finished difference. Result has 160 places, 194 transitions, 2111 flow [2024-06-28 02:00:33,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2111, PETRI_PLACES=160, PETRI_TRANSITIONS=194} [2024-06-28 02:00:33,503 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 109 predicate places. [2024-06-28 02:00:33,504 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 194 transitions, 2111 flow [2024-06-28 02:00:33,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:33,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:33,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:33,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:00:33,504 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:33,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:33,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1997153754, now seen corresponding path program 1 times [2024-06-28 02:00:33,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:33,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074130641] [2024-06-28 02:00:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:33,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:37,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:37,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074130641] [2024-06-28 02:00:37,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074130641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:37,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:37,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:37,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211241794] [2024-06-28 02:00:37,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:37,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:37,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:37,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:37,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:37,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:37,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 194 transitions, 2111 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:37,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:37,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:37,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:39,495 INFO L124 PetriNetUnfolderBase]: 4586/6954 cut-off events. [2024-06-28 02:00:39,495 INFO L125 PetriNetUnfolderBase]: For 107656/107668 co-relation queries the response was YES. [2024-06-28 02:00:39,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38333 conditions, 6954 events. 4586/6954 cut-off events. For 107656/107668 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 40137 event pairs, 549 based on Foata normal form. 24/6975 useless extension candidates. Maximal degree in co-relation 38259. Up to 5746 conditions per place. [2024-06-28 02:00:39,547 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 262 selfloop transitions, 31 changer transitions 0/300 dead transitions. [2024-06-28 02:00:39,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 300 transitions, 3233 flow [2024-06-28 02:00:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:00:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:00:39,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-28 02:00:39,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595744680851064 [2024-06-28 02:00:39,549 INFO L175 Difference]: Start difference. First operand has 160 places, 194 transitions, 2111 flow. Second operand 10 states and 263 transitions. [2024-06-28 02:00:39,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 300 transitions, 3233 flow [2024-06-28 02:00:39,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 300 transitions, 3182 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 02:00:39,698 INFO L231 Difference]: Finished difference. Result has 169 places, 199 transitions, 2209 flow [2024-06-28 02:00:39,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2209, PETRI_PLACES=169, PETRI_TRANSITIONS=199} [2024-06-28 02:00:39,698 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 118 predicate places. [2024-06-28 02:00:39,699 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 199 transitions, 2209 flow [2024-06-28 02:00:39,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:39,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:39,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:39,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:00:39,699 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:39,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:39,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1674182998, now seen corresponding path program 2 times [2024-06-28 02:00:39,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:39,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692662591] [2024-06-28 02:00:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:39,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:43,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:43,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692662591] [2024-06-28 02:00:43,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692662591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:43,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:43,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:43,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839473908] [2024-06-28 02:00:43,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:43,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:43,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:43,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:43,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:43,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:43,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 199 transitions, 2209 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:43,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:43,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:43,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:45,068 INFO L124 PetriNetUnfolderBase]: 4712/7152 cut-off events. [2024-06-28 02:00:45,068 INFO L125 PetriNetUnfolderBase]: For 115448/115460 co-relation queries the response was YES. [2024-06-28 02:00:45,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40099 conditions, 7152 events. 4712/7152 cut-off events. For 115448/115460 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 41342 event pairs, 840 based on Foata normal form. 24/7173 useless extension candidates. Maximal degree in co-relation 40022. Up to 6116 conditions per place. [2024-06-28 02:00:45,125 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 254 selfloop transitions, 29 changer transitions 0/290 dead transitions. [2024-06-28 02:00:45,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 290 transitions, 3250 flow [2024-06-28 02:00:45,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:45,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:45,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 02:00:45,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2024-06-28 02:00:45,127 INFO L175 Difference]: Start difference. First operand has 169 places, 199 transitions, 2209 flow. Second operand 9 states and 237 transitions. [2024-06-28 02:00:45,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 290 transitions, 3250 flow [2024-06-28 02:00:45,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 290 transitions, 3190 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:45,301 INFO L231 Difference]: Finished difference. Result has 174 places, 202 transitions, 2268 flow [2024-06-28 02:00:45,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2268, PETRI_PLACES=174, PETRI_TRANSITIONS=202} [2024-06-28 02:00:45,302 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 123 predicate places. [2024-06-28 02:00:45,302 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 202 transitions, 2268 flow [2024-06-28 02:00:45,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:45,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:45,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:45,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:00:45,302 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:45,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:45,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1760871088, now seen corresponding path program 3 times [2024-06-28 02:00:45,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:45,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71373186] [2024-06-28 02:00:45,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:45,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:48,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:48,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71373186] [2024-06-28 02:00:48,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71373186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:48,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:48,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656988893] [2024-06-28 02:00:48,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:48,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:48,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:48,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:48,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:48,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:48,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 202 transitions, 2268 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:48,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:48,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:48,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:50,948 INFO L124 PetriNetUnfolderBase]: 4684/7108 cut-off events. [2024-06-28 02:00:50,949 INFO L125 PetriNetUnfolderBase]: For 113634/113646 co-relation queries the response was YES. [2024-06-28 02:00:50,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39667 conditions, 7108 events. 4684/7108 cut-off events. For 113634/113646 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 40994 event pairs, 868 based on Foata normal form. 28/7133 useless extension candidates. Maximal degree in co-relation 39587. Up to 6340 conditions per place. [2024-06-28 02:00:51,015 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 250 selfloop transitions, 29 changer transitions 0/286 dead transitions. [2024-06-28 02:00:51,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 286 transitions, 3140 flow [2024-06-28 02:00:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:51,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:51,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 02:00:51,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484633569739953 [2024-06-28 02:00:51,017 INFO L175 Difference]: Start difference. First operand has 174 places, 202 transitions, 2268 flow. Second operand 9 states and 232 transitions. [2024-06-28 02:00:51,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 286 transitions, 3140 flow [2024-06-28 02:00:51,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 286 transitions, 3082 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:51,257 INFO L231 Difference]: Finished difference. Result has 178 places, 203 transitions, 2297 flow [2024-06-28 02:00:51,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2297, PETRI_PLACES=178, PETRI_TRANSITIONS=203} [2024-06-28 02:00:51,257 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 127 predicate places. [2024-06-28 02:00:51,257 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 203 transitions, 2297 flow [2024-06-28 02:00:51,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:51,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:51,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:51,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:00:51,258 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:51,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:51,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1899991142, now seen corresponding path program 4 times [2024-06-28 02:00:51,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:51,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907833969] [2024-06-28 02:00:51,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:51,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:54,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:54,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907833969] [2024-06-28 02:00:54,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907833969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:54,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:54,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:54,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061576761] [2024-06-28 02:00:54,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:54,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:54,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:54,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:54,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:54,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:54,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 203 transitions, 2297 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:54,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:54,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:54,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:57,191 INFO L124 PetriNetUnfolderBase]: 4860/7372 cut-off events. [2024-06-28 02:00:57,191 INFO L125 PetriNetUnfolderBase]: For 119204/119206 co-relation queries the response was YES. [2024-06-28 02:00:57,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41070 conditions, 7372 events. 4860/7372 cut-off events. For 119204/119206 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 42774 event pairs, 923 based on Foata normal form. 16/7382 useless extension candidates. Maximal degree in co-relation 40988. Up to 6278 conditions per place. [2024-06-28 02:00:57,251 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 211 selfloop transitions, 63 changer transitions 0/281 dead transitions. [2024-06-28 02:00:57,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 281 transitions, 3131 flow [2024-06-28 02:00:57,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:57,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:57,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 02:00:57,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.557919621749409 [2024-06-28 02:00:57,253 INFO L175 Difference]: Start difference. First operand has 178 places, 203 transitions, 2297 flow. Second operand 9 states and 236 transitions. [2024-06-28 02:00:57,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 281 transitions, 3131 flow [2024-06-28 02:00:57,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 281 transitions, 3076 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:00:57,434 INFO L231 Difference]: Finished difference. Result has 180 places, 204 transitions, 2395 flow [2024-06-28 02:00:57,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2395, PETRI_PLACES=180, PETRI_TRANSITIONS=204} [2024-06-28 02:00:57,435 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 129 predicate places. [2024-06-28 02:00:57,435 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 204 transitions, 2395 flow [2024-06-28 02:00:57,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:57,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:57,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:57,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:00:57,435 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:57,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:57,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1899843272, now seen corresponding path program 5 times [2024-06-28 02:00:57,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:57,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550932033] [2024-06-28 02:00:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:57,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:00,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:00,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550932033] [2024-06-28 02:01:00,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550932033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:00,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:00,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:00,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542535681] [2024-06-28 02:01:00,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:00,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:00,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:00,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:00,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:01,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:01:01,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 204 transitions, 2395 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:01,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:01,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:01:01,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:03,235 INFO L124 PetriNetUnfolderBase]: 5190/7910 cut-off events. [2024-06-28 02:01:03,235 INFO L125 PetriNetUnfolderBase]: For 137581/137583 co-relation queries the response was YES. [2024-06-28 02:01:03,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44816 conditions, 7910 events. 5190/7910 cut-off events. For 137581/137583 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 47031 event pairs, 955 based on Foata normal form. 12/7916 useless extension candidates. Maximal degree in co-relation 44733. Up to 6304 conditions per place. [2024-06-28 02:01:03,307 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 217 selfloop transitions, 65 changer transitions 0/289 dead transitions. [2024-06-28 02:01:03,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 289 transitions, 3421 flow [2024-06-28 02:01:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-28 02:01:03,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-06-28 02:01:03,309 INFO L175 Difference]: Start difference. First operand has 180 places, 204 transitions, 2395 flow. Second operand 9 states and 240 transitions. [2024-06-28 02:01:03,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 289 transitions, 3421 flow [2024-06-28 02:01:03,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 289 transitions, 3288 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:03,601 INFO L231 Difference]: Finished difference. Result has 183 places, 207 transitions, 2456 flow [2024-06-28 02:01:03,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2456, PETRI_PLACES=183, PETRI_TRANSITIONS=207} [2024-06-28 02:01:03,601 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 132 predicate places. [2024-06-28 02:01:03,602 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 207 transitions, 2456 flow [2024-06-28 02:01:03,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:03,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:03,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:03,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:01:03,602 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:03,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1905353522, now seen corresponding path program 6 times [2024-06-28 02:01:03,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:03,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532422410] [2024-06-28 02:01:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:03,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:06,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:06,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532422410] [2024-06-28 02:01:06,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532422410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:06,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:06,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:06,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413626947] [2024-06-28 02:01:06,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:06,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:06,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:06,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:06,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:07,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:01:07,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 207 transitions, 2456 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:07,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:07,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:01:07,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:09,597 INFO L124 PetriNetUnfolderBase]: 5162/7866 cut-off events. [2024-06-28 02:01:09,597 INFO L125 PetriNetUnfolderBase]: For 136294/136296 co-relation queries the response was YES. [2024-06-28 02:01:09,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44395 conditions, 7866 events. 5162/7866 cut-off events. For 136294/136296 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 46700 event pairs, 983 based on Foata normal form. 16/7876 useless extension candidates. Maximal degree in co-relation 44310. Up to 6748 conditions per place. [2024-06-28 02:01:09,661 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 213 selfloop transitions, 65 changer transitions 0/285 dead transitions. [2024-06-28 02:01:09,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 285 transitions, 3303 flow [2024-06-28 02:01:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:09,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 02:01:09,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 02:01:09,662 INFO L175 Difference]: Start difference. First operand has 183 places, 207 transitions, 2456 flow. Second operand 9 states and 235 transitions. [2024-06-28 02:01:09,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 285 transitions, 3303 flow [2024-06-28 02:01:09,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 285 transitions, 3196 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 02:01:09,925 INFO L231 Difference]: Finished difference. Result has 187 places, 208 transitions, 2511 flow [2024-06-28 02:01:09,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2511, PETRI_PLACES=187, PETRI_TRANSITIONS=208} [2024-06-28 02:01:09,925 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 136 predicate places. [2024-06-28 02:01:09,925 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 208 transitions, 2511 flow [2024-06-28 02:01:09,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:09,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:09,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:09,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:01:09,926 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:09,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1905568724, now seen corresponding path program 1 times [2024-06-28 02:01:09,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:09,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023694344] [2024-06-28 02:01:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:09,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:13,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:13,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023694344] [2024-06-28 02:01:13,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023694344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:13,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:13,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:13,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814429139] [2024-06-28 02:01:13,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:13,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:13,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:13,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:13,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:13,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:01:13,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 208 transitions, 2511 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:13,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:13,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:01:13,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:15,833 INFO L124 PetriNetUnfolderBase]: 5288/8088 cut-off events. [2024-06-28 02:01:15,834 INFO L125 PetriNetUnfolderBase]: For 137414/137416 co-relation queries the response was YES. [2024-06-28 02:01:15,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45560 conditions, 8088 events. 5288/8088 cut-off events. For 137414/137416 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 48548 event pairs, 967 based on Foata normal form. 12/8094 useless extension candidates. Maximal degree in co-relation 45473. Up to 6262 conditions per place. [2024-06-28 02:01:15,914 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 213 selfloop transitions, 69 changer transitions 0/289 dead transitions. [2024-06-28 02:01:15,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 289 transitions, 3381 flow [2024-06-28 02:01:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:15,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 02:01:15,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2024-06-28 02:01:15,916 INFO L175 Difference]: Start difference. First operand has 187 places, 208 transitions, 2511 flow. Second operand 9 states and 237 transitions. [2024-06-28 02:01:15,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 289 transitions, 3381 flow [2024-06-28 02:01:16,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 289 transitions, 3252 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:16,270 INFO L231 Difference]: Finished difference. Result has 189 places, 209 transitions, 2550 flow [2024-06-28 02:01:16,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2550, PETRI_PLACES=189, PETRI_TRANSITIONS=209} [2024-06-28 02:01:16,271 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 138 predicate places. [2024-06-28 02:01:16,271 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 209 transitions, 2550 flow [2024-06-28 02:01:16,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:16,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:16,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:16,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:01:16,272 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:16,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:16,272 INFO L85 PathProgramCache]: Analyzing trace with hash 93956470, now seen corresponding path program 7 times [2024-06-28 02:01:16,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:16,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146862182] [2024-06-28 02:01:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:16,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:19,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:19,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146862182] [2024-06-28 02:01:19,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146862182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:19,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:19,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727166427] [2024-06-28 02:01:19,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:19,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:19,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:19,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:19,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:19,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:01:19,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 209 transitions, 2550 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:19,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:19,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:01:19,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:21,563 INFO L124 PetriNetUnfolderBase]: 5464/8340 cut-off events. [2024-06-28 02:01:21,563 INFO L125 PetriNetUnfolderBase]: For 150398/150415 co-relation queries the response was YES. [2024-06-28 02:01:21,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47506 conditions, 8340 events. 5464/8340 cut-off events. For 150398/150415 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 50256 event pairs, 1027 based on Foata normal form. 20/8347 useless extension candidates. Maximal degree in co-relation 47418. Up to 7218 conditions per place. [2024-06-28 02:01:21,645 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 211 selfloop transitions, 67 changer transitions 0/285 dead transitions. [2024-06-28 02:01:21,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 285 transitions, 3402 flow [2024-06-28 02:01:21,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:21,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-28 02:01:21,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2024-06-28 02:01:21,646 INFO L175 Difference]: Start difference. First operand has 189 places, 209 transitions, 2550 flow. Second operand 9 states and 230 transitions. [2024-06-28 02:01:21,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 285 transitions, 3402 flow [2024-06-28 02:01:21,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 285 transitions, 3250 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:21,991 INFO L231 Difference]: Finished difference. Result has 191 places, 210 transitions, 2565 flow [2024-06-28 02:01:21,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2398, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2565, PETRI_PLACES=191, PETRI_TRANSITIONS=210} [2024-06-28 02:01:21,992 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 140 predicate places. [2024-06-28 02:01:21,992 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 210 transitions, 2565 flow [2024-06-28 02:01:21,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:21,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:21,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:21,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:01:21,992 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:21,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:21,993 INFO L85 PathProgramCache]: Analyzing trace with hash 315659058, now seen corresponding path program 8 times [2024-06-28 02:01:21,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:21,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402548566] [2024-06-28 02:01:21,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:21,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:25,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:25,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402548566] [2024-06-28 02:01:25,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402548566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:25,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:25,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:25,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726449510] [2024-06-28 02:01:25,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:25,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:25,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:25,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:25,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:25,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:01:25,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 210 transitions, 2565 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:25,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:25,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:01:25,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:27,580 INFO L124 PetriNetUnfolderBase]: 5640/8680 cut-off events. [2024-06-28 02:01:27,580 INFO L125 PetriNetUnfolderBase]: For 158912/158929 co-relation queries the response was YES. [2024-06-28 02:01:27,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48912 conditions, 8680 events. 5640/8680 cut-off events. For 158912/158929 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 53289 event pairs, 1099 based on Foata normal form. 20/8687 useless extension candidates. Maximal degree in co-relation 48823. Up to 7490 conditions per place. [2024-06-28 02:01:27,654 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 216 selfloop transitions, 63 changer transitions 0/286 dead transitions. [2024-06-28 02:01:27,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 286 transitions, 3421 flow [2024-06-28 02:01:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:27,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 02:01:27,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484633569739953 [2024-06-28 02:01:27,656 INFO L175 Difference]: Start difference. First operand has 191 places, 210 transitions, 2565 flow. Second operand 9 states and 232 transitions. [2024-06-28 02:01:27,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 286 transitions, 3421 flow [2024-06-28 02:01:27,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 286 transitions, 3274 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:27,949 INFO L231 Difference]: Finished difference. Result has 193 places, 211 transitions, 2579 flow [2024-06-28 02:01:27,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2579, PETRI_PLACES=193, PETRI_TRANSITIONS=211} [2024-06-28 02:01:27,950 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 142 predicate places. [2024-06-28 02:01:27,950 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 211 transitions, 2579 flow [2024-06-28 02:01:27,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:27,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:27,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:27,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:01:27,951 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:27,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:27,951 INFO L85 PathProgramCache]: Analyzing trace with hash 310296678, now seen corresponding path program 9 times [2024-06-28 02:01:27,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:27,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085632947] [2024-06-28 02:01:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:27,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:31,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:31,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085632947] [2024-06-28 02:01:31,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085632947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:31,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:31,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:31,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206130374] [2024-06-28 02:01:31,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:31,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:31,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:31,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:31,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:31,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:01:31,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 211 transitions, 2579 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:31,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:31,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:01:31,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:33,694 INFO L124 PetriNetUnfolderBase]: 5816/8988 cut-off events. [2024-06-28 02:01:33,694 INFO L125 PetriNetUnfolderBase]: For 167901/167918 co-relation queries the response was YES. [2024-06-28 02:01:33,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50358 conditions, 8988 events. 5816/8988 cut-off events. For 167901/167918 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 55729 event pairs, 1147 based on Foata normal form. 20/8995 useless extension candidates. Maximal degree in co-relation 50268. Up to 7762 conditions per place. [2024-06-28 02:01:33,770 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 216 selfloop transitions, 64 changer transitions 0/287 dead transitions. [2024-06-28 02:01:33,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 287 transitions, 3439 flow [2024-06-28 02:01:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-28 02:01:33,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-28 02:01:33,771 INFO L175 Difference]: Start difference. First operand has 193 places, 211 transitions, 2579 flow. Second operand 9 states and 231 transitions. [2024-06-28 02:01:33,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 287 transitions, 3439 flow [2024-06-28 02:01:34,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 287 transitions, 3298 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:34,120 INFO L231 Difference]: Finished difference. Result has 195 places, 212 transitions, 2603 flow [2024-06-28 02:01:34,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2438, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2603, PETRI_PLACES=195, PETRI_TRANSITIONS=212} [2024-06-28 02:01:34,121 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 144 predicate places. [2024-06-28 02:01:34,121 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 212 transitions, 2603 flow [2024-06-28 02:01:34,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:34,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:34,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:34,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:01:34,121 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:34,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:34,122 INFO L85 PathProgramCache]: Analyzing trace with hash 310148808, now seen corresponding path program 10 times [2024-06-28 02:01:34,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:34,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638426151] [2024-06-28 02:01:34,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:34,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:37,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:37,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638426151] [2024-06-28 02:01:37,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638426151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:37,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:37,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:37,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986434196] [2024-06-28 02:01:37,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:37,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:37,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:37,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:37,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:37,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:01:37,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 212 transitions, 2603 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:37,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:37,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:01:37,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:39,686 INFO L124 PetriNetUnfolderBase]: 5884/9064 cut-off events. [2024-06-28 02:01:39,687 INFO L125 PetriNetUnfolderBase]: For 167387/167404 co-relation queries the response was YES. [2024-06-28 02:01:39,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50574 conditions, 9064 events. 5884/9064 cut-off events. For 167387/167404 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 56131 event pairs, 1093 based on Foata normal form. 16/9067 useless extension candidates. Maximal degree in co-relation 50483. Up to 7190 conditions per place. [2024-06-28 02:01:39,768 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 218 selfloop transitions, 68 changer transitions 0/293 dead transitions. [2024-06-28 02:01:39,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 293 transitions, 3527 flow [2024-06-28 02:01:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 02:01:39,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-06-28 02:01:39,770 INFO L175 Difference]: Start difference. First operand has 195 places, 212 transitions, 2603 flow. Second operand 9 states and 233 transitions. [2024-06-28 02:01:39,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 293 transitions, 3527 flow [2024-06-28 02:01:40,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 293 transitions, 3382 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:40,113 INFO L231 Difference]: Finished difference. Result has 198 places, 215 transitions, 2682 flow [2024-06-28 02:01:40,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2682, PETRI_PLACES=198, PETRI_TRANSITIONS=215} [2024-06-28 02:01:40,113 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 147 predicate places. [2024-06-28 02:01:40,113 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 215 transitions, 2682 flow [2024-06-28 02:01:40,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:40,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:40,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:40,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:01:40,114 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:40,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash -216729766, now seen corresponding path program 2 times [2024-06-28 02:01:40,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:40,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773602574] [2024-06-28 02:01:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:40,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:43,204 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 02:01:43,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:43,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773602574] [2024-06-28 02:01:43,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773602574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:43,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:43,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:43,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830995889] [2024-06-28 02:01:43,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:43,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:43,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:43,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:43,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:01:43,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 215 transitions, 2682 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:43,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:43,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:01:43,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:45,785 INFO L124 PetriNetUnfolderBase]: 6010/9310 cut-off events. [2024-06-28 02:01:45,785 INFO L125 PetriNetUnfolderBase]: For 175629/175646 co-relation queries the response was YES. [2024-06-28 02:01:45,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51977 conditions, 9310 events. 6010/9310 cut-off events. For 175629/175646 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 58225 event pairs, 1165 based on Foata normal form. 16/9313 useless extension candidates. Maximal degree in co-relation 51884. Up to 7620 conditions per place. [2024-06-28 02:01:45,859 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 221 selfloop transitions, 66 changer transitions 0/294 dead transitions. [2024-06-28 02:01:45,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 294 transitions, 3576 flow [2024-06-28 02:01:45,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 02:01:45,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 02:01:45,862 INFO L175 Difference]: Start difference. First operand has 198 places, 215 transitions, 2682 flow. Second operand 9 states and 234 transitions. [2024-06-28 02:01:45,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 294 transitions, 3576 flow [2024-06-28 02:01:46,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 294 transitions, 3461 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 02:01:46,250 INFO L231 Difference]: Finished difference. Result has 202 places, 216 transitions, 2739 flow [2024-06-28 02:01:46,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2739, PETRI_PLACES=202, PETRI_TRANSITIONS=216} [2024-06-28 02:01:46,251 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 151 predicate places. [2024-06-28 02:01:46,251 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 216 transitions, 2739 flow [2024-06-28 02:01:46,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:46,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:46,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:46,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:01:46,251 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:46,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:46,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1209124682, now seen corresponding path program 3 times [2024-06-28 02:01:46,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:46,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18869239] [2024-06-28 02:01:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:46,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:49,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:49,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18869239] [2024-06-28 02:01:49,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18869239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:49,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:49,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:49,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627053438] [2024-06-28 02:01:49,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:49,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:49,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:49,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:49,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:49,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:01:49,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 216 transitions, 2739 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:49,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:49,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:01:49,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:51,946 INFO L124 PetriNetUnfolderBase]: 6136/9492 cut-off events. [2024-06-28 02:01:51,946 INFO L125 PetriNetUnfolderBase]: For 183274/183291 co-relation queries the response was YES. [2024-06-28 02:01:52,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53544 conditions, 9492 events. 6136/9492 cut-off events. For 183274/183291 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 59482 event pairs, 1169 based on Foata normal form. 16/9495 useless extension candidates. Maximal degree in co-relation 53449. Up to 8050 conditions per place. [2024-06-28 02:01:52,045 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 219 selfloop transitions, 69 changer transitions 0/295 dead transitions. [2024-06-28 02:01:52,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 295 transitions, 3637 flow [2024-06-28 02:01:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:52,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:52,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 02:01:52,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-06-28 02:01:52,047 INFO L175 Difference]: Start difference. First operand has 202 places, 216 transitions, 2739 flow. Second operand 9 states and 233 transitions. [2024-06-28 02:01:52,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 295 transitions, 3637 flow [2024-06-28 02:01:52,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 295 transitions, 3481 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:52,454 INFO L231 Difference]: Finished difference. Result has 204 places, 217 transitions, 2763 flow [2024-06-28 02:01:52,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2763, PETRI_PLACES=204, PETRI_TRANSITIONS=217} [2024-06-28 02:01:52,455 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 153 predicate places. [2024-06-28 02:01:52,455 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 217 transitions, 2763 flow [2024-06-28 02:01:52,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:52,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:52,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:52,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:01:52,455 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:52,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1201715372, now seen corresponding path program 4 times [2024-06-28 02:01:52,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:52,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867714936] [2024-06-28 02:01:52,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:52,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:55,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:55,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867714936] [2024-06-28 02:01:55,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867714936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:55,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:55,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:55,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205210825] [2024-06-28 02:01:55,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:55,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:55,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:55,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:55,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:55,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:01:55,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 217 transitions, 2763 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:55,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:55,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:01:55,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:57,889 INFO L124 PetriNetUnfolderBase]: 6116/9452 cut-off events. [2024-06-28 02:01:57,889 INFO L125 PetriNetUnfolderBase]: For 174331/174348 co-relation queries the response was YES. [2024-06-28 02:01:57,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52464 conditions, 9452 events. 6116/9452 cut-off events. For 174331/174348 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 58928 event pairs, 996 based on Foata normal form. 16/9455 useless extension candidates. Maximal degree in co-relation 52368. Up to 6140 conditions per place. [2024-06-28 02:01:57,984 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 206 selfloop transitions, 82 changer transitions 0/295 dead transitions. [2024-06-28 02:01:57,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 295 transitions, 3545 flow [2024-06-28 02:01:57,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 02:01:57,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484633569739953 [2024-06-28 02:01:57,986 INFO L175 Difference]: Start difference. First operand has 204 places, 217 transitions, 2763 flow. Second operand 9 states and 232 transitions. [2024-06-28 02:01:57,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 295 transitions, 3545 flow [2024-06-28 02:01:58,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 295 transitions, 3381 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:58,272 INFO L231 Difference]: Finished difference. Result has 205 places, 216 transitions, 2683 flow [2024-06-28 02:01:58,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2683, PETRI_PLACES=205, PETRI_TRANSITIONS=216} [2024-06-28 02:01:58,273 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 154 predicate places. [2024-06-28 02:01:58,273 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 216 transitions, 2683 flow [2024-06-28 02:01:58,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:58,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:58,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:58,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:01:58,276 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:58,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:58,276 INFO L85 PathProgramCache]: Analyzing trace with hash -223562824, now seen corresponding path program 1 times [2024-06-28 02:01:58,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:58,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891806909] [2024-06-28 02:01:58,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:58,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:00,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:00,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891806909] [2024-06-28 02:02:00,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891806909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:00,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:00,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:02:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673935692] [2024-06-28 02:02:00,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:00,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:02:00,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:00,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:02:00,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:02:00,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 02:02:00,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 216 transitions, 2683 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:00,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:00,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 02:02:00,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:02,914 INFO L124 PetriNetUnfolderBase]: 6004/9460 cut-off events. [2024-06-28 02:02:02,915 INFO L125 PetriNetUnfolderBase]: For 172471/172570 co-relation queries the response was YES. [2024-06-28 02:02:02,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52313 conditions, 9460 events. 6004/9460 cut-off events. For 172471/172570 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 61214 event pairs, 1221 based on Foata normal form. 95/9485 useless extension candidates. Maximal degree in co-relation 52216. Up to 8335 conditions per place. [2024-06-28 02:02:03,021 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 209 selfloop transitions, 56 changer transitions 0/288 dead transitions. [2024-06-28 02:02:03,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 288 transitions, 3686 flow [2024-06-28 02:02:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 02:02:03,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 02:02:03,022 INFO L175 Difference]: Start difference. First operand has 205 places, 216 transitions, 2683 flow. Second operand 8 states and 199 transitions. [2024-06-28 02:02:03,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 288 transitions, 3686 flow [2024-06-28 02:02:03,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 288 transitions, 3356 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-28 02:02:03,427 INFO L231 Difference]: Finished difference. Result has 203 places, 237 transitions, 2732 flow [2024-06-28 02:02:03,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2732, PETRI_PLACES=203, PETRI_TRANSITIONS=237} [2024-06-28 02:02:03,427 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 152 predicate places. [2024-06-28 02:02:03,428 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 237 transitions, 2732 flow [2024-06-28 02:02:03,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:03,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:03,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:03,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:02:03,428 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:02:03,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:03,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1011576776, now seen corresponding path program 2 times [2024-06-28 02:02:03,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:03,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882293454] [2024-06-28 02:02:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:03,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:05,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:05,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882293454] [2024-06-28 02:02:05,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882293454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:05,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:05,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:02:05,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235895783] [2024-06-28 02:02:05,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:05,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:02:05,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:05,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:02:05,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:02:05,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 02:02:05,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 237 transitions, 2732 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:05,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:05,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 02:02:05,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:07,834 INFO L124 PetriNetUnfolderBase]: 5984/9426 cut-off events. [2024-06-28 02:02:07,834 INFO L125 PetriNetUnfolderBase]: For 169992/170091 co-relation queries the response was YES. [2024-06-28 02:02:07,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50224 conditions, 9426 events. 5984/9426 cut-off events. For 169992/170091 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 61070 event pairs, 1243 based on Foata normal form. 95/9436 useless extension candidates. Maximal degree in co-relation 50129. Up to 8327 conditions per place. [2024-06-28 02:02:07,924 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 195 selfloop transitions, 54 changer transitions 0/272 dead transitions. [2024-06-28 02:02:07,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 272 transitions, 3334 flow [2024-06-28 02:02:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:02:07,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:02:07,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 02:02:07,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-28 02:02:07,925 INFO L175 Difference]: Start difference. First operand has 203 places, 237 transitions, 2732 flow. Second operand 6 states and 153 transitions. [2024-06-28 02:02:07,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 272 transitions, 3334 flow [2024-06-28 02:02:08,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 272 transitions, 3249 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-06-28 02:02:08,280 INFO L231 Difference]: Finished difference. Result has 207 places, 237 transitions, 2775 flow [2024-06-28 02:02:08,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2647, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2775, PETRI_PLACES=207, PETRI_TRANSITIONS=237} [2024-06-28 02:02:08,280 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 156 predicate places. [2024-06-28 02:02:08,280 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 237 transitions, 2775 flow [2024-06-28 02:02:08,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:08,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:08,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:08,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:02:08,281 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:02:08,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:08,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1011161066, now seen corresponding path program 3 times [2024-06-28 02:02:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:08,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144244784] [2024-06-28 02:02:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:08,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:10,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:10,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144244784] [2024-06-28 02:02:10,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144244784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:10,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:10,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:02:10,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846615317] [2024-06-28 02:02:10,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:10,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:02:10,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:10,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:02:10,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:02:10,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 02:02:10,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 237 transitions, 2775 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:10,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:10,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 02:02:10,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:12,707 INFO L124 PetriNetUnfolderBase]: 5979/9395 cut-off events. [2024-06-28 02:02:12,708 INFO L125 PetriNetUnfolderBase]: For 173533/173651 co-relation queries the response was YES. [2024-06-28 02:02:12,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50122 conditions, 9395 events. 5979/9395 cut-off events. For 173533/173651 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 60598 event pairs, 1253 based on Foata normal form. 108/9397 useless extension candidates. Maximal degree in co-relation 50025. Up to 8243 conditions per place. [2024-06-28 02:02:12,788 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 193 selfloop transitions, 58 changer transitions 0/274 dead transitions. [2024-06-28 02:02:12,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 274 transitions, 3463 flow [2024-06-28 02:02:12,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:02:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:02:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 02:02:12,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 02:02:12,790 INFO L175 Difference]: Start difference. First operand has 207 places, 237 transitions, 2775 flow. Second operand 6 states and 147 transitions. [2024-06-28 02:02:12,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 274 transitions, 3463 flow [2024-06-28 02:02:13,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 274 transitions, 3355 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 02:02:13,044 INFO L231 Difference]: Finished difference. Result has 209 places, 244 transitions, 2907 flow [2024-06-28 02:02:13,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2667, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2907, PETRI_PLACES=209, PETRI_TRANSITIONS=244} [2024-06-28 02:02:13,045 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 158 predicate places. [2024-06-28 02:02:13,045 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 244 transitions, 2907 flow [2024-06-28 02:02:13,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:13,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:13,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:13,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:02:13,045 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:02:13,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:13,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1226503038, now seen corresponding path program 1 times [2024-06-28 02:02:13,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:13,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200720847] [2024-06-28 02:02:13,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:13,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:15,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:15,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200720847] [2024-06-28 02:02:15,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200720847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:15,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:15,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:02:15,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880139268] [2024-06-28 02:02:15,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:15,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:02:15,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:15,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:02:15,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:02:15,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:02:15,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 244 transitions, 2907 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:15,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:15,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:02:15,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:17,411 INFO L124 PetriNetUnfolderBase]: 6423/10256 cut-off events. [2024-06-28 02:02:17,411 INFO L125 PetriNetUnfolderBase]: For 185745/185747 co-relation queries the response was YES. [2024-06-28 02:02:17,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54904 conditions, 10256 events. 6423/10256 cut-off events. For 185745/185747 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 67855 event pairs, 1685 based on Foata normal form. 1/10254 useless extension candidates. Maximal degree in co-relation 54805. Up to 9340 conditions per place. [2024-06-28 02:02:17,520 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 254 selfloop transitions, 28 changer transitions 0/289 dead transitions. [2024-06-28 02:02:17,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 289 transitions, 3801 flow [2024-06-28 02:02:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:02:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:02:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 02:02:17,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045592705167173 [2024-06-28 02:02:17,522 INFO L175 Difference]: Start difference. First operand has 209 places, 244 transitions, 2907 flow. Second operand 7 states and 166 transitions. [2024-06-28 02:02:17,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 289 transitions, 3801 flow [2024-06-28 02:02:18,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 289 transitions, 3700 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-28 02:02:18,017 INFO L231 Difference]: Finished difference. Result has 214 places, 252 transitions, 3017 flow [2024-06-28 02:02:18,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3017, PETRI_PLACES=214, PETRI_TRANSITIONS=252} [2024-06-28 02:02:18,017 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 163 predicate places. [2024-06-28 02:02:18,017 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 252 transitions, 3017 flow [2024-06-28 02:02:18,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:18,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:18,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:18,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:02:18,018 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:02:18,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:18,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1226623194, now seen corresponding path program 1 times [2024-06-28 02:02:18,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:18,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608863513] [2024-06-28 02:02:18,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:18,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:19,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:19,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608863513] [2024-06-28 02:02:19,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608863513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:19,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:19,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:02:19,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28807846] [2024-06-28 02:02:19,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:19,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:02:19,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:19,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:02:19,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:02:20,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:02:20,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 252 transitions, 3017 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:20,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:20,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:02:20,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:22,516 INFO L124 PetriNetUnfolderBase]: 6477/10280 cut-off events. [2024-06-28 02:02:22,516 INFO L125 PetriNetUnfolderBase]: For 192870/192872 co-relation queries the response was YES. [2024-06-28 02:02:22,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55619 conditions, 10280 events. 6477/10280 cut-off events. For 192870/192872 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 67404 event pairs, 1673 based on Foata normal form. 2/10279 useless extension candidates. Maximal degree in co-relation 55518. Up to 9368 conditions per place. [2024-06-28 02:02:22,634 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 262 selfloop transitions, 31 changer transitions 0/300 dead transitions. [2024-06-28 02:02:22,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 300 transitions, 3962 flow [2024-06-28 02:02:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:02:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:02:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 02:02:22,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045592705167173 [2024-06-28 02:02:22,635 INFO L175 Difference]: Start difference. First operand has 214 places, 252 transitions, 3017 flow. Second operand 7 states and 166 transitions. [2024-06-28 02:02:22,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 300 transitions, 3962 flow [2024-06-28 02:02:23,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 300 transitions, 3859 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 02:02:23,154 INFO L231 Difference]: Finished difference. Result has 219 places, 264 transitions, 3171 flow [2024-06-28 02:02:23,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2918, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3171, PETRI_PLACES=219, PETRI_TRANSITIONS=264} [2024-06-28 02:02:23,155 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 168 predicate places. [2024-06-28 02:02:23,155 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 264 transitions, 3171 flow [2024-06-28 02:02:23,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:23,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:23,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:23,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:02:23,155 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:02:23,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:23,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1226623008, now seen corresponding path program 2 times [2024-06-28 02:02:23,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:23,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375592328] [2024-06-28 02:02:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:23,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:25,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:25,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375592328] [2024-06-28 02:02:25,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375592328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:25,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:25,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:02:25,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965142389] [2024-06-28 02:02:25,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:25,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:02:25,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:25,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:02:25,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:02:25,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:02:25,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 264 transitions, 3171 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:25,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:25,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:02:25,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:27,604 INFO L124 PetriNetUnfolderBase]: 6495/10314 cut-off events. [2024-06-28 02:02:27,604 INFO L125 PetriNetUnfolderBase]: For 201181/201183 co-relation queries the response was YES. [2024-06-28 02:02:27,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56737 conditions, 10314 events. 6495/10314 cut-off events. For 201181/201183 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 67738 event pairs, 1688 based on Foata normal form. 1/10312 useless extension candidates. Maximal degree in co-relation 56633. Up to 9462 conditions per place. [2024-06-28 02:02:27,704 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 268 selfloop transitions, 25 changer transitions 0/300 dead transitions. [2024-06-28 02:02:27,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 300 transitions, 3901 flow [2024-06-28 02:02:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:02:27,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:02:27,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 02:02:27,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-28 02:02:27,705 INFO L175 Difference]: Start difference. First operand has 219 places, 264 transitions, 3171 flow. Second operand 7 states and 160 transitions. [2024-06-28 02:02:27,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 300 transitions, 3901 flow [2024-06-28 02:02:28,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 300 transitions, 3814 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 02:02:28,220 INFO L231 Difference]: Finished difference. Result has 224 places, 268 transitions, 3209 flow [2024-06-28 02:02:28,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3084, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3209, PETRI_PLACES=224, PETRI_TRANSITIONS=268} [2024-06-28 02:02:28,221 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 173 predicate places. [2024-06-28 02:02:28,221 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 268 transitions, 3209 flow [2024-06-28 02:02:28,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:28,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:28,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:28,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:02:28,221 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:02:28,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:28,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1011155114, now seen corresponding path program 2 times [2024-06-28 02:02:28,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:28,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416344659] [2024-06-28 02:02:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:28,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:30,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:30,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416344659] [2024-06-28 02:02:30,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416344659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:30,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:30,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:02:30,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692198841] [2024-06-28 02:02:30,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:30,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:02:30,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:30,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:02:30,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:02:30,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:02:30,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 268 transitions, 3209 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:30,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:30,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:02:30,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:32,697 INFO L124 PetriNetUnfolderBase]: 6531/10363 cut-off events. [2024-06-28 02:02:32,697 INFO L125 PetriNetUnfolderBase]: For 208711/208716 co-relation queries the response was YES. [2024-06-28 02:02:32,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57014 conditions, 10363 events. 6531/10363 cut-off events. For 208711/208716 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 68064 event pairs, 1681 based on Foata normal form. 4/10363 useless extension candidates. Maximal degree in co-relation 56908. Up to 9424 conditions per place. [2024-06-28 02:02:32,834 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 257 selfloop transitions, 34 changer transitions 0/298 dead transitions. [2024-06-28 02:02:32,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 298 transitions, 4015 flow [2024-06-28 02:02:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:02:32,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:02:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 02:02:32,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-28 02:02:32,835 INFO L175 Difference]: Start difference. First operand has 224 places, 268 transitions, 3209 flow. Second operand 6 states and 140 transitions. [2024-06-28 02:02:32,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 298 transitions, 4015 flow [2024-06-28 02:02:33,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 298 transitions, 3916 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 02:02:33,404 INFO L231 Difference]: Finished difference. Result has 224 places, 272 transitions, 3245 flow [2024-06-28 02:02:33,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3110, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3245, PETRI_PLACES=224, PETRI_TRANSITIONS=272} [2024-06-28 02:02:33,405 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 173 predicate places. [2024-06-28 02:02:33,405 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 272 transitions, 3245 flow [2024-06-28 02:02:33,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:33,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:33,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:33,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:02:33,405 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:02:33,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:33,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1011392264, now seen corresponding path program 3 times [2024-06-28 02:02:33,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:33,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973492898] [2024-06-28 02:02:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:33,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:35,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:35,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973492898] [2024-06-28 02:02:35,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973492898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:35,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:35,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:02:35,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169303850] [2024-06-28 02:02:35,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:35,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:02:35,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:35,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:02:35,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:02:35,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:02:35,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 272 transitions, 3245 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:35,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:35,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:02:35,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:37,811 INFO L124 PetriNetUnfolderBase]: 6525/10350 cut-off events. [2024-06-28 02:02:37,812 INFO L125 PetriNetUnfolderBase]: For 210328/210330 co-relation queries the response was YES. [2024-06-28 02:02:37,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56966 conditions, 10350 events. 6525/10350 cut-off events. For 210328/210330 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 67806 event pairs, 1672 based on Foata normal form. 2/10349 useless extension candidates. Maximal degree in co-relation 56860. Up to 9419 conditions per place. [2024-06-28 02:02:37,905 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 260 selfloop transitions, 35 changer transitions 0/302 dead transitions. [2024-06-28 02:02:37,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 302 transitions, 3913 flow [2024-06-28 02:02:37,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:02:37,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:02:37,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 02:02:37,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-28 02:02:37,907 INFO L175 Difference]: Start difference. First operand has 224 places, 272 transitions, 3245 flow. Second operand 6 states and 145 transitions. [2024-06-28 02:02:37,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 302 transitions, 3913 flow [2024-06-28 02:02:38,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 302 transitions, 3777 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-28 02:02:38,401 INFO L231 Difference]: Finished difference. Result has 227 places, 272 transitions, 3191 flow [2024-06-28 02:02:38,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3109, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3191, PETRI_PLACES=227, PETRI_TRANSITIONS=272} [2024-06-28 02:02:38,401 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 176 predicate places. [2024-06-28 02:02:38,401 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 272 transitions, 3191 flow [2024-06-28 02:02:38,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:38,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:38,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:38,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:02:38,402 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:02:38,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1011392450, now seen corresponding path program 3 times [2024-06-28 02:02:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:38,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456849229] [2024-06-28 02:02:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:38,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:40,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:40,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456849229] [2024-06-28 02:02:40,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456849229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:40,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:40,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:02:40,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753038564] [2024-06-28 02:02:40,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:40,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:02:40,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:02:40,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:02:40,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:02:40,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 272 transitions, 3191 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:40,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:40,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:02:40,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:42,751 INFO L124 PetriNetUnfolderBase]: 6522/10350 cut-off events. [2024-06-28 02:02:42,752 INFO L125 PetriNetUnfolderBase]: For 211800/211802 co-relation queries the response was YES. [2024-06-28 02:02:42,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56725 conditions, 10350 events. 6522/10350 cut-off events. For 211800/211802 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 67945 event pairs, 1687 based on Foata normal form. 1/10348 useless extension candidates. Maximal degree in co-relation 56618. Up to 9468 conditions per place. [2024-06-28 02:02:42,865 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 264 selfloop transitions, 32 changer transitions 0/303 dead transitions. [2024-06-28 02:02:42,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 303 transitions, 3867 flow [2024-06-28 02:02:42,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:02:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:02:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 02:02:42,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-28 02:02:42,867 INFO L175 Difference]: Start difference. First operand has 227 places, 272 transitions, 3191 flow. Second operand 6 states and 145 transitions. [2024-06-28 02:02:42,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 303 transitions, 3867 flow [2024-06-28 02:02:43,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 303 transitions, 3753 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:02:43,441 INFO L231 Difference]: Finished difference. Result has 227 places, 272 transitions, 3158 flow [2024-06-28 02:02:43,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3158, PETRI_PLACES=227, PETRI_TRANSITIONS=272} [2024-06-28 02:02:43,442 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 176 predicate places. [2024-06-28 02:02:43,442 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 272 transitions, 3158 flow [2024-06-28 02:02:43,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:43,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:43,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:43,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:02:43,443 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:02:43,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1011146186, now seen corresponding path program 1 times [2024-06-28 02:02:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:43,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691596143] [2024-06-28 02:02:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:43,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:46,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:46,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691596143] [2024-06-28 02:02:46,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691596143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:46,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:46,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:46,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757025206] [2024-06-28 02:02:46,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:46,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:46,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:46,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:46,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:46,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 02:02:46,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 272 transitions, 3158 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:46,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:46,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 02:02:46,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:48,440 INFO L124 PetriNetUnfolderBase]: 6076/9724 cut-off events. [2024-06-28 02:02:48,441 INFO L125 PetriNetUnfolderBase]: For 206242/206350 co-relation queries the response was YES. [2024-06-28 02:02:48,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53427 conditions, 9724 events. 6076/9724 cut-off events. For 206242/206350 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 64447 event pairs, 1562 based on Foata normal form. 102/9740 useless extension candidates. Maximal degree in co-relation 53320. Up to 8753 conditions per place. [2024-06-28 02:02:48,532 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 261 selfloop transitions, 16 changer transitions 0/300 dead transitions. [2024-06-28 02:02:48,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 300 transitions, 3834 flow [2024-06-28 02:02:48,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:02:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:02:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 02:02:48,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:02:48,533 INFO L175 Difference]: Start difference. First operand has 227 places, 272 transitions, 3158 flow. Second operand 6 states and 141 transitions. [2024-06-28 02:02:48,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 300 transitions, 3834 flow [2024-06-28 02:02:48,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 300 transitions, 3768 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 02:02:48,915 INFO L231 Difference]: Finished difference. Result has 228 places, 275 transitions, 3194 flow [2024-06-28 02:02:48,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3092, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3194, PETRI_PLACES=228, PETRI_TRANSITIONS=275} [2024-06-28 02:02:48,915 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 177 predicate places. [2024-06-28 02:02:48,915 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 275 transitions, 3194 flow [2024-06-28 02:02:48,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:48,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:48,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:48,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:02:48,915 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:02:48,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:48,916 INFO L85 PathProgramCache]: Analyzing trace with hash -633109873, now seen corresponding path program 1 times [2024-06-28 02:02:48,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:48,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568410587] [2024-06-28 02:02:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:51,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:51,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568410587] [2024-06-28 02:02:51,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568410587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:51,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:51,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017974029] [2024-06-28 02:02:51,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:51,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:51,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:51,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:51,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:51,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:02:51,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 275 transitions, 3194 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:51,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:51,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:02:51,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:54,028 INFO L124 PetriNetUnfolderBase]: 6553/10399 cut-off events. [2024-06-28 02:02:54,028 INFO L125 PetriNetUnfolderBase]: For 215722/215724 co-relation queries the response was YES. [2024-06-28 02:02:54,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57329 conditions, 10399 events. 6553/10399 cut-off events. For 215722/215724 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 68166 event pairs, 1666 based on Foata normal form. 2/10398 useless extension candidates. Maximal degree in co-relation 57221. Up to 9315 conditions per place. [2024-06-28 02:02:54,149 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 267 selfloop transitions, 55 changer transitions 0/329 dead transitions. [2024-06-28 02:02:54,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 329 transitions, 4198 flow [2024-06-28 02:02:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 02:02:54,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-28 02:02:54,151 INFO L175 Difference]: Start difference. First operand has 228 places, 275 transitions, 3194 flow. Second operand 8 states and 193 transitions. [2024-06-28 02:02:54,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 329 transitions, 4198 flow [2024-06-28 02:02:54,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 329 transitions, 4118 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 02:02:54,760 INFO L231 Difference]: Finished difference. Result has 232 places, 283 transitions, 3379 flow [2024-06-28 02:02:54,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3379, PETRI_PLACES=232, PETRI_TRANSITIONS=283} [2024-06-28 02:02:54,761 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 181 predicate places. [2024-06-28 02:02:54,761 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 283 transitions, 3379 flow [2024-06-28 02:02:54,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:54,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:54,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:54,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:02:54,761 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:02:54,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash -629385223, now seen corresponding path program 2 times [2024-06-28 02:02:54,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:54,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909613809] [2024-06-28 02:02:54,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:54,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:57,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:57,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909613809] [2024-06-28 02:02:57,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909613809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:57,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:57,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:57,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917984042] [2024-06-28 02:02:57,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:57,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:57,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:57,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:57,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:57,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:02:57,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 283 transitions, 3379 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:57,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:57,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:02:57,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:59,890 INFO L124 PetriNetUnfolderBase]: 6631/10513 cut-off events. [2024-06-28 02:02:59,891 INFO L125 PetriNetUnfolderBase]: For 232471/232473 co-relation queries the response was YES. [2024-06-28 02:02:59,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59478 conditions, 10513 events. 6631/10513 cut-off events. For 232471/232473 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 68921 event pairs, 1669 based on Foata normal form. 2/10512 useless extension candidates. Maximal degree in co-relation 59369. Up to 9496 conditions per place. [2024-06-28 02:03:00,000 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 290 selfloop transitions, 47 changer transitions 0/344 dead transitions. [2024-06-28 02:03:00,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 344 transitions, 4445 flow [2024-06-28 02:03:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:03:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:03:00,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 228 transitions. [2024-06-28 02:03:00,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-06-28 02:03:00,002 INFO L175 Difference]: Start difference. First operand has 232 places, 283 transitions, 3379 flow. Second operand 10 states and 228 transitions. [2024-06-28 02:03:00,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 344 transitions, 4445 flow [2024-06-28 02:03:00,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 344 transitions, 4287 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-28 02:03:00,572 INFO L231 Difference]: Finished difference. Result has 238 places, 291 transitions, 3486 flow [2024-06-28 02:03:00,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3257, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3486, PETRI_PLACES=238, PETRI_TRANSITIONS=291} [2024-06-28 02:03:00,572 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 187 predicate places. [2024-06-28 02:03:00,572 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 291 transitions, 3486 flow [2024-06-28 02:03:00,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:00,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:00,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:00,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:03:00,573 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:00,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:00,573 INFO L85 PathProgramCache]: Analyzing trace with hash -629390803, now seen corresponding path program 3 times [2024-06-28 02:03:00,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:00,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257039873] [2024-06-28 02:03:00,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:00,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:02,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:02,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257039873] [2024-06-28 02:03:02,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257039873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:02,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:02,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:02,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712781637] [2024-06-28 02:03:02,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:02,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:02,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:02,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:02,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:02,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:03:02,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 291 transitions, 3486 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:02,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:02,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:03:02,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:05,413 INFO L124 PetriNetUnfolderBase]: 6625/10511 cut-off events. [2024-06-28 02:03:05,413 INFO L125 PetriNetUnfolderBase]: For 232314/232316 co-relation queries the response was YES. [2024-06-28 02:03:05,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59275 conditions, 10511 events. 6625/10511 cut-off events. For 232314/232316 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 68950 event pairs, 1667 based on Foata normal form. 2/10510 useless extension candidates. Maximal degree in co-relation 59164. Up to 9491 conditions per place. [2024-06-28 02:03:05,529 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 280 selfloop transitions, 46 changer transitions 0/333 dead transitions. [2024-06-28 02:03:05,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 333 transitions, 4244 flow [2024-06-28 02:03:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:03:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:03:05,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:03:05,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-28 02:03:05,530 INFO L175 Difference]: Start difference. First operand has 238 places, 291 transitions, 3486 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:03:05,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 333 transitions, 4244 flow [2024-06-28 02:03:06,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 333 transitions, 4110 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 02:03:06,149 INFO L231 Difference]: Finished difference. Result has 240 places, 291 transitions, 3451 flow [2024-06-28 02:03:06,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3451, PETRI_PLACES=240, PETRI_TRANSITIONS=291} [2024-06-28 02:03:06,150 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 189 predicate places. [2024-06-28 02:03:06,150 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 291 transitions, 3451 flow [2024-06-28 02:03:06,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:06,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:06,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:06,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:03:06,150 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:06,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:06,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1281036035, now seen corresponding path program 4 times [2024-06-28 02:03:06,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:06,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136015103] [2024-06-28 02:03:06,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:06,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:08,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:08,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136015103] [2024-06-28 02:03:08,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136015103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:08,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:08,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:08,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869512109] [2024-06-28 02:03:08,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:08,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:08,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:08,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:03:08,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 291 transitions, 3451 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:08,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:08,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:03:08,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:11,269 INFO L124 PetriNetUnfolderBase]: 6661/10570 cut-off events. [2024-06-28 02:03:11,269 INFO L125 PetriNetUnfolderBase]: For 238373/238378 co-relation queries the response was YES. [2024-06-28 02:03:11,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59664 conditions, 10570 events. 6661/10570 cut-off events. For 238373/238378 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 69470 event pairs, 1675 based on Foata normal form. 4/10570 useless extension candidates. Maximal degree in co-relation 59551. Up to 9444 conditions per place. [2024-06-28 02:03:11,381 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 273 selfloop transitions, 62 changer transitions 0/342 dead transitions. [2024-06-28 02:03:11,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 342 transitions, 4415 flow [2024-06-28 02:03:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:03:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:03:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-28 02:03:11,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-28 02:03:11,382 INFO L175 Difference]: Start difference. First operand has 240 places, 291 transitions, 3451 flow. Second operand 9 states and 207 transitions. [2024-06-28 02:03:11,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 342 transitions, 4415 flow [2024-06-28 02:03:12,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 342 transitions, 4323 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:03:12,019 INFO L231 Difference]: Finished difference. Result has 242 places, 295 transitions, 3558 flow [2024-06-28 02:03:12,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3359, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3558, PETRI_PLACES=242, PETRI_TRANSITIONS=295} [2024-06-28 02:03:12,020 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 191 predicate places. [2024-06-28 02:03:12,020 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 295 transitions, 3558 flow [2024-06-28 02:03:12,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:12,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:12,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:12,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:03:12,020 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:12,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:12,021 INFO L85 PathProgramCache]: Analyzing trace with hash -457224365, now seen corresponding path program 5 times [2024-06-28 02:03:12,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:12,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591792185] [2024-06-28 02:03:12,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:12,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:14,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:14,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591792185] [2024-06-28 02:03:14,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591792185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:14,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:14,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:14,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577081138] [2024-06-28 02:03:14,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:14,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:14,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:14,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:14,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:14,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:03:14,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 295 transitions, 3558 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:14,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:14,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:03:14,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:16,976 INFO L124 PetriNetUnfolderBase]: 6697/10619 cut-off events. [2024-06-28 02:03:16,976 INFO L125 PetriNetUnfolderBase]: For 244442/244444 co-relation queries the response was YES. [2024-06-28 02:03:17,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60285 conditions, 10619 events. 6697/10619 cut-off events. For 244442/244444 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 69583 event pairs, 1667 based on Foata normal form. 2/10618 useless extension candidates. Maximal degree in co-relation 60171. Up to 9476 conditions per place. [2024-06-28 02:03:17,103 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 268 selfloop transitions, 65 changer transitions 0/340 dead transitions. [2024-06-28 02:03:17,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 340 transitions, 4516 flow [2024-06-28 02:03:17,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:17,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 02:03:17,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-28 02:03:17,105 INFO L175 Difference]: Start difference. First operand has 242 places, 295 transitions, 3558 flow. Second operand 7 states and 173 transitions. [2024-06-28 02:03:17,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 340 transitions, 4516 flow [2024-06-28 02:03:17,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 340 transitions, 4297 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 02:03:17,737 INFO L231 Difference]: Finished difference. Result has 242 places, 299 transitions, 3557 flow [2024-06-28 02:03:17,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3359, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3557, PETRI_PLACES=242, PETRI_TRANSITIONS=299} [2024-06-28 02:03:17,738 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 191 predicate places. [2024-06-28 02:03:17,738 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 299 transitions, 3557 flow [2024-06-28 02:03:17,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:17,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:17,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:17,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:03:17,738 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:17,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:17,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1288387685, now seen corresponding path program 6 times [2024-06-28 02:03:17,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:17,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784896695] [2024-06-28 02:03:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:17,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:20,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:20,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784896695] [2024-06-28 02:03:20,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784896695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:20,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:20,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:20,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175476980] [2024-06-28 02:03:20,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:20,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:20,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:20,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:20,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:20,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:03:20,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 299 transitions, 3557 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:20,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:20,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:03:20,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:22,858 INFO L124 PetriNetUnfolderBase]: 6691/10611 cut-off events. [2024-06-28 02:03:22,858 INFO L125 PetriNetUnfolderBase]: For 245021/245023 co-relation queries the response was YES. [2024-06-28 02:03:22,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59938 conditions, 10611 events. 6691/10611 cut-off events. For 245021/245023 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 69675 event pairs, 1667 based on Foata normal form. 2/10610 useless extension candidates. Maximal degree in co-relation 59823. Up to 9471 conditions per place. [2024-06-28 02:03:22,984 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 277 selfloop transitions, 67 changer transitions 0/351 dead transitions. [2024-06-28 02:03:22,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 351 transitions, 4377 flow [2024-06-28 02:03:22,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:03:22,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:03:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 02:03:22,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-28 02:03:22,986 INFO L175 Difference]: Start difference. First operand has 242 places, 299 transitions, 3557 flow. Second operand 9 states and 214 transitions. [2024-06-28 02:03:22,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 351 transitions, 4377 flow [2024-06-28 02:03:23,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 351 transitions, 4216 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 02:03:23,818 INFO L231 Difference]: Finished difference. Result has 246 places, 299 transitions, 3542 flow [2024-06-28 02:03:23,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3396, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3542, PETRI_PLACES=246, PETRI_TRANSITIONS=299} [2024-06-28 02:03:23,818 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 195 predicate places. [2024-06-28 02:03:23,819 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 299 transitions, 3542 flow [2024-06-28 02:03:23,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:23,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:23,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:23,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:03:23,819 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:23,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:23,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1110576993, now seen corresponding path program 1 times [2024-06-28 02:03:23,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:23,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920740915] [2024-06-28 02:03:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:23,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:26,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:26,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920740915] [2024-06-28 02:03:26,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920740915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:26,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:26,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:26,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100158253] [2024-06-28 02:03:26,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:26,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:26,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:26,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:26,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:26,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:03:26,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 299 transitions, 3542 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:26,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:26,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:03:26,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:29,656 INFO L124 PetriNetUnfolderBase]: 6740/10416 cut-off events. [2024-06-28 02:03:29,656 INFO L125 PetriNetUnfolderBase]: For 245592/245604 co-relation queries the response was YES. [2024-06-28 02:03:29,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60162 conditions, 10416 events. 6740/10416 cut-off events. For 245592/245604 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 66087 event pairs, 1255 based on Foata normal form. 13/10423 useless extension candidates. Maximal degree in co-relation 60047. Up to 9341 conditions per place. [2024-06-28 02:03:29,789 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 296 selfloop transitions, 70 changer transitions 0/373 dead transitions. [2024-06-28 02:03:29,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 373 transitions, 4978 flow [2024-06-28 02:03:29,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:03:29,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:03:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 02:03:29,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-28 02:03:29,791 INFO L175 Difference]: Start difference. First operand has 246 places, 299 transitions, 3542 flow. Second operand 8 states and 205 transitions. [2024-06-28 02:03:29,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 373 transitions, 4978 flow [2024-06-28 02:03:30,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 373 transitions, 4793 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:03:30,510 INFO L231 Difference]: Finished difference. Result has 245 places, 311 transitions, 3770 flow [2024-06-28 02:03:30,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3361, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3770, PETRI_PLACES=245, PETRI_TRANSITIONS=311} [2024-06-28 02:03:30,510 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 194 predicate places. [2024-06-28 02:03:30,511 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 311 transitions, 3770 flow [2024-06-28 02:03:30,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:30,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:30,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:30,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:03:30,511 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:30,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:30,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1110457023, now seen corresponding path program 2 times [2024-06-28 02:03:30,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:30,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351568454] [2024-06-28 02:03:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:30,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:33,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:33,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351568454] [2024-06-28 02:03:33,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351568454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:33,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:33,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:33,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506543931] [2024-06-28 02:03:33,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:33,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:33,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:33,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:33,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:33,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:03:33,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 311 transitions, 3770 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:33,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:33,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:03:33,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:36,370 INFO L124 PetriNetUnfolderBase]: 6786/10521 cut-off events. [2024-06-28 02:03:36,370 INFO L125 PetriNetUnfolderBase]: For 253135/253150 co-relation queries the response was YES. [2024-06-28 02:03:36,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61780 conditions, 10521 events. 6786/10521 cut-off events. For 253135/253150 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 67058 event pairs, 1263 based on Foata normal form. 15/10532 useless extension candidates. Maximal degree in co-relation 61664. Up to 9597 conditions per place. [2024-06-28 02:03:36,502 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 314 selfloop transitions, 52 changer transitions 0/373 dead transitions. [2024-06-28 02:03:36,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 373 transitions, 4838 flow [2024-06-28 02:03:36,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:03:36,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:03:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:03:36,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 02:03:36,503 INFO L175 Difference]: Start difference. First operand has 245 places, 311 transitions, 3770 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:03:36,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 373 transitions, 4838 flow [2024-06-28 02:03:37,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 373 transitions, 4744 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-28 02:03:37,339 INFO L231 Difference]: Finished difference. Result has 251 places, 317 transitions, 3888 flow [2024-06-28 02:03:37,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3689, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3888, PETRI_PLACES=251, PETRI_TRANSITIONS=317} [2024-06-28 02:03:37,339 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 200 predicate places. [2024-06-28 02:03:37,339 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 317 transitions, 3888 flow [2024-06-28 02:03:37,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:37,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:37,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:37,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:03:37,340 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:37,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash 735406679, now seen corresponding path program 1 times [2024-06-28 02:03:37,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:37,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811016342] [2024-06-28 02:03:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:37,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:40,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:40,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811016342] [2024-06-28 02:03:40,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811016342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:40,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:40,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:40,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927719042] [2024-06-28 02:03:40,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:40,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:40,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:40,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:40,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:03:40,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 317 transitions, 3888 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:40,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:40,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:03:40,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:43,514 INFO L124 PetriNetUnfolderBase]: 6936/10731 cut-off events. [2024-06-28 02:03:43,515 INFO L125 PetriNetUnfolderBase]: For 267245/267260 co-relation queries the response was YES. [2024-06-28 02:03:43,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63356 conditions, 10731 events. 6936/10731 cut-off events. For 267245/267260 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 68333 event pairs, 1273 based on Foata normal form. 16/10743 useless extension candidates. Maximal degree in co-relation 63237. Up to 9622 conditions per place. [2024-06-28 02:03:43,634 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 333 selfloop transitions, 67 changer transitions 0/407 dead transitions. [2024-06-28 02:03:43,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 407 transitions, 5422 flow [2024-06-28 02:03:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:03:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:03:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-28 02:03:43,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191489361702127 [2024-06-28 02:03:43,636 INFO L175 Difference]: Start difference. First operand has 251 places, 317 transitions, 3888 flow. Second operand 10 states and 244 transitions. [2024-06-28 02:03:43,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 407 transitions, 5422 flow [2024-06-28 02:03:44,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 407 transitions, 5296 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 02:03:44,337 INFO L231 Difference]: Finished difference. Result has 258 places, 335 transitions, 4201 flow [2024-06-28 02:03:44,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3762, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4201, PETRI_PLACES=258, PETRI_TRANSITIONS=335} [2024-06-28 02:03:44,338 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 207 predicate places. [2024-06-28 02:03:44,338 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 335 transitions, 4201 flow [2024-06-28 02:03:44,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:44,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:44,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:44,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:03:44,338 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:44,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:44,339 INFO L85 PathProgramCache]: Analyzing trace with hash -933088167, now seen corresponding path program 2 times [2024-06-28 02:03:44,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:44,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728144912] [2024-06-28 02:03:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:44,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:47,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:47,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728144912] [2024-06-28 02:03:47,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728144912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:47,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:47,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:47,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128767636] [2024-06-28 02:03:47,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:47,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:47,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:47,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:47,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:47,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:03:47,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 335 transitions, 4201 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:47,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:47,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:03:47,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:49,952 INFO L124 PetriNetUnfolderBase]: 7132/10995 cut-off events. [2024-06-28 02:03:49,952 INFO L125 PetriNetUnfolderBase]: For 296811/296826 co-relation queries the response was YES. [2024-06-28 02:03:50,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67528 conditions, 10995 events. 7132/10995 cut-off events. For 296811/296826 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 69802 event pairs, 1277 based on Foata normal form. 16/11007 useless extension candidates. Maximal degree in co-relation 67406. Up to 9790 conditions per place. [2024-06-28 02:03:50,101 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 328 selfloop transitions, 82 changer transitions 0/417 dead transitions. [2024-06-28 02:03:50,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 417 transitions, 5824 flow [2024-06-28 02:03:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:03:50,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:03:50,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 02:03:50,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-28 02:03:50,102 INFO L175 Difference]: Start difference. First operand has 258 places, 335 transitions, 4201 flow. Second operand 9 states and 220 transitions. [2024-06-28 02:03:50,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 417 transitions, 5824 flow [2024-06-28 02:03:51,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 417 transitions, 5558 flow, removed 96 selfloop flow, removed 5 redundant places. [2024-06-28 02:03:51,075 INFO L231 Difference]: Finished difference. Result has 262 places, 355 transitions, 4455 flow [2024-06-28 02:03:51,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4023, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4455, PETRI_PLACES=262, PETRI_TRANSITIONS=355} [2024-06-28 02:03:51,075 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 211 predicate places. [2024-06-28 02:03:51,075 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 355 transitions, 4455 flow [2024-06-28 02:03:51,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:51,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:51,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:51,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:03:51,076 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:51,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:51,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1598105177, now seen corresponding path program 3 times [2024-06-28 02:03:51,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:51,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629337357] [2024-06-28 02:03:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:51,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:54,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:54,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629337357] [2024-06-28 02:03:54,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629337357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:54,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:54,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:54,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248248648] [2024-06-28 02:03:54,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:54,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:54,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:54,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:54,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:54,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:03:54,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 355 transitions, 4455 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:54,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:54,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:03:54,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:57,044 INFO L124 PetriNetUnfolderBase]: 7126/10993 cut-off events. [2024-06-28 02:03:57,044 INFO L125 PetriNetUnfolderBase]: For 295567/295582 co-relation queries the response was YES. [2024-06-28 02:03:57,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66983 conditions, 10993 events. 7126/10993 cut-off events. For 295567/295582 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 69860 event pairs, 1274 based on Foata normal form. 16/11005 useless extension candidates. Maximal degree in co-relation 66859. Up to 9785 conditions per place. [2024-06-28 02:03:57,189 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 340 selfloop transitions, 84 changer transitions 0/431 dead transitions. [2024-06-28 02:03:57,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 431 transitions, 5821 flow [2024-06-28 02:03:57,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:03:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:03:57,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 263 transitions. [2024-06-28 02:03:57,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087040618955513 [2024-06-28 02:03:57,191 INFO L175 Difference]: Start difference. First operand has 262 places, 355 transitions, 4455 flow. Second operand 11 states and 263 transitions. [2024-06-28 02:03:57,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 431 transitions, 5821 flow [2024-06-28 02:03:58,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 431 transitions, 5700 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 02:03:58,144 INFO L231 Difference]: Finished difference. Result has 270 places, 355 transitions, 4509 flow [2024-06-28 02:03:58,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4334, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4509, PETRI_PLACES=270, PETRI_TRANSITIONS=355} [2024-06-28 02:03:58,145 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 219 predicate places. [2024-06-28 02:03:58,145 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 355 transitions, 4509 flow [2024-06-28 02:03:58,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:58,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:58,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:58,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:03:58,145 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:03:58,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:58,145 INFO L85 PathProgramCache]: Analyzing trace with hash -933325503, now seen corresponding path program 3 times [2024-06-28 02:03:58,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:58,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306637109] [2024-06-28 02:03:58,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:58,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:01,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:01,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306637109] [2024-06-28 02:04:01,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306637109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:01,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:01,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:01,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999893900] [2024-06-28 02:04:01,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:01,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:01,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:01,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:01,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:01,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:04:01,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 355 transitions, 4509 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:01,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:01,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:04:01,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:04,116 INFO L124 PetriNetUnfolderBase]: 7175/11065 cut-off events. [2024-06-28 02:04:04,116 INFO L125 PetriNetUnfolderBase]: For 304800/304815 co-relation queries the response was YES. [2024-06-28 02:04:04,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67797 conditions, 11065 events. 7175/11065 cut-off events. For 304800/304815 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 70514 event pairs, 1274 based on Foata normal form. 15/11076 useless extension candidates. Maximal degree in co-relation 67672. Up to 10076 conditions per place. [2024-06-28 02:04:04,267 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 351 selfloop transitions, 64 changer transitions 0/422 dead transitions. [2024-06-28 02:04:04,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 422 transitions, 5875 flow [2024-06-28 02:04:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:04:04,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:04:04,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 02:04:04,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-28 02:04:04,269 INFO L175 Difference]: Start difference. First operand has 270 places, 355 transitions, 4509 flow. Second operand 9 states and 214 transitions. [2024-06-28 02:04:04,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 422 transitions, 5875 flow [2024-06-28 02:04:05,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 422 transitions, 5669 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 02:04:05,387 INFO L231 Difference]: Finished difference. Result has 272 places, 361 transitions, 4569 flow [2024-06-28 02:04:05,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4303, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4569, PETRI_PLACES=272, PETRI_TRANSITIONS=361} [2024-06-28 02:04:05,388 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 221 predicate places. [2024-06-28 02:04:05,388 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 361 transitions, 4569 flow [2024-06-28 02:04:05,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:05,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:05,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:05,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:04:05,388 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:05,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash -933079239, now seen corresponding path program 1 times [2024-06-28 02:04:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556565247] [2024-06-28 02:04:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:08,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:08,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556565247] [2024-06-28 02:04:08,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556565247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:08,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:08,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:04:08,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184003096] [2024-06-28 02:04:08,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:08,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:04:08,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:08,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:04:08,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:04:08,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 02:04:08,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 361 transitions, 4569 flow. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:08,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:08,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 02:04:08,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:11,626 INFO L124 PetriNetUnfolderBase]: 6958/10841 cut-off events. [2024-06-28 02:04:11,626 INFO L125 PetriNetUnfolderBase]: For 327495/327594 co-relation queries the response was YES. [2024-06-28 02:04:11,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65949 conditions, 10841 events. 6958/10841 cut-off events. For 327495/327594 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 70101 event pairs, 1262 based on Foata normal form. 103/10857 useless extension candidates. Maximal degree in co-relation 65822. Up to 9268 conditions per place. [2024-06-28 02:04:11,753 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 320 selfloop transitions, 64 changer transitions 0/424 dead transitions. [2024-06-28 02:04:11,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 424 transitions, 5611 flow [2024-06-28 02:04:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:04:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:04:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 02:04:11,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-28 02:04:11,755 INFO L175 Difference]: Start difference. First operand has 272 places, 361 transitions, 4569 flow. Second operand 9 states and 223 transitions. [2024-06-28 02:04:11,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 424 transitions, 5611 flow [2024-06-28 02:04:12,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 424 transitions, 5449 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 02:04:12,822 INFO L231 Difference]: Finished difference. Result has 275 places, 363 transitions, 4590 flow [2024-06-28 02:04:12,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4407, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4590, PETRI_PLACES=275, PETRI_TRANSITIONS=363} [2024-06-28 02:04:12,822 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 224 predicate places. [2024-06-28 02:04:12,823 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 363 transitions, 4590 flow [2024-06-28 02:04:12,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:12,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:12,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:12,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:04:12,823 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:12,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2113884143, now seen corresponding path program 4 times [2024-06-28 02:04:12,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:12,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767825872] [2024-06-28 02:04:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:12,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:15,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:15,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767825872] [2024-06-28 02:04:15,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767825872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:15,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:15,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:15,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2640620] [2024-06-28 02:04:15,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:15,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:15,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:15,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:15,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:15,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:04:15,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 363 transitions, 4590 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:15,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:15,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:04:15,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:18,755 INFO L124 PetriNetUnfolderBase]: 7436/11544 cut-off events. [2024-06-28 02:04:18,755 INFO L125 PetriNetUnfolderBase]: For 331225/331255 co-relation queries the response was YES. [2024-06-28 02:04:18,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70694 conditions, 11544 events. 7436/11544 cut-off events. For 331225/331255 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 74393 event pairs, 1400 based on Foata normal form. 21/11558 useless extension candidates. Maximal degree in co-relation 70566. Up to 10219 conditions per place. [2024-06-28 02:04:19,142 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 329 selfloop transitions, 94 changer transitions 0/430 dead transitions. [2024-06-28 02:04:19,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 430 transitions, 6250 flow [2024-06-28 02:04:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:19,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:19,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 02:04:19,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-28 02:04:19,144 INFO L175 Difference]: Start difference. First operand has 275 places, 363 transitions, 4590 flow. Second operand 8 states and 202 transitions. [2024-06-28 02:04:19,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 430 transitions, 6250 flow [2024-06-28 02:04:20,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 430 transitions, 6097 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 02:04:20,110 INFO L231 Difference]: Finished difference. Result has 276 places, 369 transitions, 4759 flow [2024-06-28 02:04:20,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4759, PETRI_PLACES=276, PETRI_TRANSITIONS=369} [2024-06-28 02:04:20,110 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 225 predicate places. [2024-06-28 02:04:20,110 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 369 transitions, 4759 flow [2024-06-28 02:04:20,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:20,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:20,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:20,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:04:20,111 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:20,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:20,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1836990333, now seen corresponding path program 5 times [2024-06-28 02:04:20,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:20,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195798602] [2024-06-28 02:04:20,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:20,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:22,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195798602] [2024-06-28 02:04:22,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195798602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:22,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:22,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:22,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680097423] [2024-06-28 02:04:22,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:22,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:22,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:22,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:22,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:04:22,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 369 transitions, 4759 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:22,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:22,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:04:22,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:25,922 INFO L124 PetriNetUnfolderBase]: 7459/11567 cut-off events. [2024-06-28 02:04:25,922 INFO L125 PetriNetUnfolderBase]: For 336400/336430 co-relation queries the response was YES. [2024-06-28 02:04:26,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70752 conditions, 11567 events. 7459/11567 cut-off events. For 336400/336430 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 74503 event pairs, 1402 based on Foata normal form. 21/11581 useless extension candidates. Maximal degree in co-relation 70623. Up to 10243 conditions per place. [2024-06-28 02:04:26,097 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 324 selfloop transitions, 101 changer transitions 0/432 dead transitions. [2024-06-28 02:04:26,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 432 transitions, 6243 flow [2024-06-28 02:04:26,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:26,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:26,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 02:04:26,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 02:04:26,099 INFO L175 Difference]: Start difference. First operand has 276 places, 369 transitions, 4759 flow. Second operand 8 states and 200 transitions. [2024-06-28 02:04:26,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 432 transitions, 6243 flow [2024-06-28 02:04:27,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 432 transitions, 6016 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:27,289 INFO L231 Difference]: Finished difference. Result has 280 places, 372 transitions, 4810 flow [2024-06-28 02:04:27,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4548, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4810, PETRI_PLACES=280, PETRI_TRANSITIONS=372} [2024-06-28 02:04:27,290 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 229 predicate places. [2024-06-28 02:04:27,290 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 372 transitions, 4810 flow [2024-06-28 02:04:27,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:27,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:27,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:27,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:04:27,290 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:27,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:27,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1837318623, now seen corresponding path program 6 times [2024-06-28 02:04:27,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:27,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044322083] [2024-06-28 02:04:27,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:27,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:29,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:29,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044322083] [2024-06-28 02:04:29,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044322083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:29,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:29,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:29,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287663826] [2024-06-28 02:04:29,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:29,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:29,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:29,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:29,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:29,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:04:29,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 372 transitions, 4810 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:29,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:29,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:04:29,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:32,973 INFO L124 PetriNetUnfolderBase]: 7487/11609 cut-off events. [2024-06-28 02:04:32,974 INFO L125 PetriNetUnfolderBase]: For 342235/342265 co-relation queries the response was YES. [2024-06-28 02:04:33,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71080 conditions, 11609 events. 7487/11609 cut-off events. For 342235/342265 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 74764 event pairs, 1388 based on Foata normal form. 21/11623 useless extension candidates. Maximal degree in co-relation 70950. Up to 10271 conditions per place. [2024-06-28 02:04:33,122 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 320 selfloop transitions, 106 changer transitions 0/433 dead transitions. [2024-06-28 02:04:33,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 433 transitions, 6208 flow [2024-06-28 02:04:33,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:33,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:04:33,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 02:04:33,123 INFO L175 Difference]: Start difference. First operand has 280 places, 372 transitions, 4810 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:04:33,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 433 transitions, 6208 flow [2024-06-28 02:04:34,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 433 transitions, 5965 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 02:04:34,238 INFO L231 Difference]: Finished difference. Result has 283 places, 378 transitions, 4928 flow [2024-06-28 02:04:34,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4588, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4928, PETRI_PLACES=283, PETRI_TRANSITIONS=378} [2024-06-28 02:04:34,239 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 232 predicate places. [2024-06-28 02:04:34,239 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 378 transitions, 4928 flow [2024-06-28 02:04:34,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:34,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:34,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:34,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:04:34,239 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:34,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:34,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1609209153, now seen corresponding path program 7 times [2024-06-28 02:04:34,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:34,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886941283] [2024-06-28 02:04:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:34,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:37,261 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 02:04:37,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:37,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886941283] [2024-06-28 02:04:37,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886941283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:37,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:37,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:37,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419666972] [2024-06-28 02:04:37,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:37,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:37,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:37,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:37,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:37,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:04:37,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 378 transitions, 4928 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:37,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:37,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:04:37,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:40,404 INFO L124 PetriNetUnfolderBase]: 7484/11615 cut-off events. [2024-06-28 02:04:40,404 INFO L125 PetriNetUnfolderBase]: For 347539/347569 co-relation queries the response was YES. [2024-06-28 02:04:40,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71016 conditions, 11615 events. 7484/11615 cut-off events. For 347539/347569 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 74863 event pairs, 1408 based on Foata normal form. 21/11629 useless extension candidates. Maximal degree in co-relation 70885. Up to 10546 conditions per place. [2024-06-28 02:04:40,546 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 365 selfloop transitions, 60 changer transitions 0/432 dead transitions. [2024-06-28 02:04:40,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 432 transitions, 6074 flow [2024-06-28 02:04:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:04:40,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 02:04:40,547 INFO L175 Difference]: Start difference. First operand has 283 places, 378 transitions, 4928 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:04:40,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 432 transitions, 6074 flow [2024-06-28 02:04:41,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 432 transitions, 5888 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:41,793 INFO L231 Difference]: Finished difference. Result has 287 places, 378 transitions, 4868 flow [2024-06-28 02:04:41,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4742, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4868, PETRI_PLACES=287, PETRI_TRANSITIONS=378} [2024-06-28 02:04:41,794 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 236 predicate places. [2024-06-28 02:04:41,794 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 378 transitions, 4868 flow [2024-06-28 02:04:41,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:41,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:41,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:41,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:04:41,794 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:41,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:41,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1609209339, now seen corresponding path program 4 times [2024-06-28 02:04:41,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:41,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120684043] [2024-06-28 02:04:41,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:41,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:44,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:44,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120684043] [2024-06-28 02:04:44,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120684043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:44,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:44,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:44,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887533225] [2024-06-28 02:04:44,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:44,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:44,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:44,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:44,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:44,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:04:44,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 378 transitions, 4868 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:44,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:44,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:04:44,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:47,625 INFO L124 PetriNetUnfolderBase]: 7478/11583 cut-off events. [2024-06-28 02:04:47,626 INFO L125 PetriNetUnfolderBase]: For 351751/351781 co-relation queries the response was YES. [2024-06-28 02:04:47,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70548 conditions, 11583 events. 7478/11583 cut-off events. For 351751/351781 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 74455 event pairs, 1403 based on Foata normal form. 22/11598 useless extension candidates. Maximal degree in co-relation 70416. Up to 10494 conditions per place. [2024-06-28 02:04:47,785 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 370 selfloop transitions, 65 changer transitions 0/442 dead transitions. [2024-06-28 02:04:47,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 442 transitions, 6182 flow [2024-06-28 02:04:47,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:04:47,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:04:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 02:04:47,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 02:04:47,786 INFO L175 Difference]: Start difference. First operand has 287 places, 378 transitions, 4868 flow. Second operand 9 states and 216 transitions. [2024-06-28 02:04:47,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 442 transitions, 6182 flow [2024-06-28 02:04:49,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 442 transitions, 6022 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 02:04:49,306 INFO L231 Difference]: Finished difference. Result has 291 places, 380 transitions, 4882 flow [2024-06-28 02:04:49,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4716, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4882, PETRI_PLACES=291, PETRI_TRANSITIONS=380} [2024-06-28 02:04:49,307 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 240 predicate places. [2024-06-28 02:04:49,307 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 380 transitions, 4882 flow [2024-06-28 02:04:49,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:49,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:49,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:49,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:04:49,307 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:49,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:49,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2103587183, now seen corresponding path program 8 times [2024-06-28 02:04:49,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:49,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781600094] [2024-06-28 02:04:49,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:49,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:52,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781600094] [2024-06-28 02:04:52,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781600094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:52,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:52,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:52,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534299551] [2024-06-28 02:04:52,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:52,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:52,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:52,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:04:52,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 380 transitions, 4882 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:52,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:52,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:04:52,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:55,554 INFO L124 PetriNetUnfolderBase]: 7560/11730 cut-off events. [2024-06-28 02:04:55,555 INFO L125 PetriNetUnfolderBase]: For 360665/360695 co-relation queries the response was YES. [2024-06-28 02:04:55,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71684 conditions, 11730 events. 7560/11730 cut-off events. For 360665/360695 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 75724 event pairs, 1398 based on Foata normal form. 21/11744 useless extension candidates. Maximal degree in co-relation 71550. Up to 10578 conditions per place. [2024-06-28 02:04:55,704 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 373 selfloop transitions, 80 changer transitions 0/460 dead transitions. [2024-06-28 02:04:55,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 460 transitions, 6565 flow [2024-06-28 02:04:55,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:04:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:04:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-06-28 02:04:55,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49361702127659574 [2024-06-28 02:04:55,705 INFO L175 Difference]: Start difference. First operand has 291 places, 380 transitions, 4882 flow. Second operand 10 states and 232 transitions. [2024-06-28 02:04:55,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 460 transitions, 6565 flow [2024-06-28 02:04:56,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 460 transitions, 6426 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:04:56,908 INFO L231 Difference]: Finished difference. Result has 298 places, 395 transitions, 5231 flow [2024-06-28 02:04:56,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4754, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5231, PETRI_PLACES=298, PETRI_TRANSITIONS=395} [2024-06-28 02:04:56,908 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 247 predicate places. [2024-06-28 02:04:56,909 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 395 transitions, 5231 flow [2024-06-28 02:04:56,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:56,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:56,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:56,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:04:56,909 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:56,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1963888089, now seen corresponding path program 5 times [2024-06-28 02:04:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:56,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77202989] [2024-06-28 02:04:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:56,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:59,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:59,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77202989] [2024-06-28 02:04:59,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77202989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:59,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:59,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:59,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945350758] [2024-06-28 02:04:59,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:59,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:59,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:59,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:59,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:59,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:04:59,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 395 transitions, 5231 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:59,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:59,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:04:59,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:02,800 INFO L124 PetriNetUnfolderBase]: 7678/11902 cut-off events. [2024-06-28 02:05:02,801 INFO L125 PetriNetUnfolderBase]: For 378767/378797 co-relation queries the response was YES. [2024-06-28 02:05:02,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73385 conditions, 11902 events. 7678/11902 cut-off events. For 378767/378797 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 76787 event pairs, 1384 based on Foata normal form. 22/11917 useless extension candidates. Maximal degree in co-relation 73247. Up to 10216 conditions per place. [2024-06-28 02:05:02,941 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 363 selfloop transitions, 100 changer transitions 0/470 dead transitions. [2024-06-28 02:05:02,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 470 transitions, 7015 flow [2024-06-28 02:05:02,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:05:02,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 02:05:02,942 INFO L175 Difference]: Start difference. First operand has 298 places, 395 transitions, 5231 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:05:02,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 470 transitions, 7015 flow [2024-06-28 02:05:04,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 470 transitions, 6882 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:04,099 INFO L231 Difference]: Finished difference. Result has 305 places, 413 transitions, 5644 flow [2024-06-28 02:05:04,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5098, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5644, PETRI_PLACES=305, PETRI_TRANSITIONS=413} [2024-06-28 02:05:04,100 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 254 predicate places. [2024-06-28 02:05:04,100 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 413 transitions, 5644 flow [2024-06-28 02:05:04,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:04,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:04,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:04,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:05:04,101 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:04,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:04,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1963472379, now seen corresponding path program 6 times [2024-06-28 02:05:04,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:04,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066545639] [2024-06-28 02:05:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:04,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:06,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:06,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:06,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066545639] [2024-06-28 02:05:06,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066545639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:06,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:06,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:06,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070015373] [2024-06-28 02:05:06,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:06,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:06,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:06,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:06,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:06,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:05:06,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 413 transitions, 5644 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:06,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:06,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:05:06,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:09,908 INFO L124 PetriNetUnfolderBase]: 7672/11890 cut-off events. [2024-06-28 02:05:09,908 INFO L125 PetriNetUnfolderBase]: For 387585/387615 co-relation queries the response was YES. [2024-06-28 02:05:10,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74877 conditions, 11890 events. 7672/11890 cut-off events. For 387585/387615 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 76823 event pairs, 1409 based on Foata normal form. 22/11905 useless extension candidates. Maximal degree in co-relation 74736. Up to 10778 conditions per place. [2024-06-28 02:05:10,081 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 391 selfloop transitions, 66 changer transitions 0/464 dead transitions. [2024-06-28 02:05:10,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 464 transitions, 6834 flow [2024-06-28 02:05:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:10,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:10,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:05:10,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-28 02:05:10,082 INFO L175 Difference]: Start difference. First operand has 305 places, 413 transitions, 5644 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:05:10,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 464 transitions, 6834 flow [2024-06-28 02:05:11,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 464 transitions, 6689 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:11,821 INFO L231 Difference]: Finished difference. Result has 310 places, 414 transitions, 5662 flow [2024-06-28 02:05:11,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5500, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5662, PETRI_PLACES=310, PETRI_TRANSITIONS=414} [2024-06-28 02:05:11,822 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 259 predicate places. [2024-06-28 02:05:11,822 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 414 transitions, 5662 flow [2024-06-28 02:05:11,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:11,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:11,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:11,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:05:11,822 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:11,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1759263983, now seen corresponding path program 9 times [2024-06-28 02:05:11,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:11,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970779212] [2024-06-28 02:05:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:11,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:14,385 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 02:05:14,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:14,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970779212] [2024-06-28 02:05:14,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970779212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:14,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:14,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:14,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659293166] [2024-06-28 02:05:14,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:14,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:14,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:14,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:05:14,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 414 transitions, 5662 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:14,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:14,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:05:14,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:17,654 INFO L124 PetriNetUnfolderBase]: 7669/11874 cut-off events. [2024-06-28 02:05:17,654 INFO L125 PetriNetUnfolderBase]: For 385385/385415 co-relation queries the response was YES. [2024-06-28 02:05:17,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74102 conditions, 11874 events. 7669/11874 cut-off events. For 385385/385415 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 76603 event pairs, 1402 based on Foata normal form. 21/11888 useless extension candidates. Maximal degree in co-relation 73959. Up to 10727 conditions per place. [2024-06-28 02:05:17,790 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 379 selfloop transitions, 78 changer transitions 0/464 dead transitions. [2024-06-28 02:05:17,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 464 transitions, 6860 flow [2024-06-28 02:05:17,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:17,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:05:17,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-28 02:05:17,792 INFO L175 Difference]: Start difference. First operand has 310 places, 414 transitions, 5662 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:05:17,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 464 transitions, 6860 flow [2024-06-28 02:05:19,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 464 transitions, 6697 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 02:05:19,105 INFO L231 Difference]: Finished difference. Result has 312 places, 414 transitions, 5662 flow [2024-06-28 02:05:19,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5499, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5662, PETRI_PLACES=312, PETRI_TRANSITIONS=414} [2024-06-28 02:05:19,106 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 261 predicate places. [2024-06-28 02:05:19,106 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 414 transitions, 5662 flow [2024-06-28 02:05:19,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:19,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:19,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:19,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:05:19,106 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:19,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:19,107 INFO L85 PathProgramCache]: Analyzing trace with hash 259584081, now seen corresponding path program 7 times [2024-06-28 02:05:19,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:19,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846624996] [2024-06-28 02:05:19,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:19,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:21,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:21,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846624996] [2024-06-28 02:05:21,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846624996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:21,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:21,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:21,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412145769] [2024-06-28 02:05:21,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:21,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:21,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:21,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:21,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:21,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:05:21,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 414 transitions, 5662 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:21,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:21,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:05:21,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:24,807 INFO L124 PetriNetUnfolderBase]: 7829/12055 cut-off events. [2024-06-28 02:05:24,808 INFO L125 PetriNetUnfolderBase]: For 415781/415830 co-relation queries the response was YES. [2024-06-28 02:05:24,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76055 conditions, 12055 events. 7829/12055 cut-off events. For 415781/415830 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 77403 event pairs, 1358 based on Foata normal form. 30/12075 useless extension candidates. Maximal degree in co-relation 75911. Up to 10343 conditions per place. [2024-06-28 02:05:24,997 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 357 selfloop transitions, 106 changer transitions 0/470 dead transitions. [2024-06-28 02:05:24,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 470 transitions, 7334 flow [2024-06-28 02:05:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:05:24,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-28 02:05:24,998 INFO L175 Difference]: Start difference. First operand has 312 places, 414 transitions, 5662 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:05:24,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 470 transitions, 7334 flow [2024-06-28 02:05:26,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 470 transitions, 7162 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 02:05:26,937 INFO L231 Difference]: Finished difference. Result has 313 places, 424 transitions, 5905 flow [2024-06-28 02:05:26,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5490, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5905, PETRI_PLACES=313, PETRI_TRANSITIONS=424} [2024-06-28 02:05:26,937 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 262 predicate places. [2024-06-28 02:05:26,937 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 424 transitions, 5905 flow [2024-06-28 02:05:26,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:26,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:26,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:05:26,938 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:26,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1063131819, now seen corresponding path program 8 times [2024-06-28 02:05:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:26,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330558714] [2024-06-28 02:05:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:26,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:29,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:29,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:29,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330558714] [2024-06-28 02:05:29,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330558714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:29,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:29,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:29,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799924463] [2024-06-28 02:05:29,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:29,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:29,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:29,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:29,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:29,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:05:29,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 424 transitions, 5905 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:29,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:29,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:05:29,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:33,043 INFO L124 PetriNetUnfolderBase]: 7843/12087 cut-off events. [2024-06-28 02:05:33,043 INFO L125 PetriNetUnfolderBase]: For 422584/422633 co-relation queries the response was YES. [2024-06-28 02:05:33,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77071 conditions, 12087 events. 7843/12087 cut-off events. For 422584/422633 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 77691 event pairs, 1362 based on Foata normal form. 30/12107 useless extension candidates. Maximal degree in co-relation 76925. Up to 10358 conditions per place. [2024-06-28 02:05:33,213 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 353 selfloop transitions, 115 changer transitions 0/475 dead transitions. [2024-06-28 02:05:33,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 475 transitions, 7499 flow [2024-06-28 02:05:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:05:33,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-28 02:05:33,214 INFO L175 Difference]: Start difference. First operand has 313 places, 424 transitions, 5905 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:05:33,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 475 transitions, 7499 flow [2024-06-28 02:05:34,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 475 transitions, 7271 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:34,912 INFO L231 Difference]: Finished difference. Result has 318 places, 432 transitions, 6151 flow [2024-06-28 02:05:34,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5710, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6151, PETRI_PLACES=318, PETRI_TRANSITIONS=432} [2024-06-28 02:05:34,913 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 267 predicate places. [2024-06-28 02:05:34,913 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 432 transitions, 6151 flow [2024-06-28 02:05:34,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:34,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:34,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:34,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:05:34,914 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:34,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:34,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1285319049, now seen corresponding path program 9 times [2024-06-28 02:05:34,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:34,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958073448] [2024-06-28 02:05:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:34,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:37,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:37,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958073448] [2024-06-28 02:05:37,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958073448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:37,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:37,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:37,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504676581] [2024-06-28 02:05:37,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:37,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:37,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:37,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:37,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:37,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:05:37,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 432 transitions, 6151 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:37,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:37,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:05:37,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:40,705 INFO L124 PetriNetUnfolderBase]: 7837/12140 cut-off events. [2024-06-28 02:05:40,705 INFO L125 PetriNetUnfolderBase]: For 421681/421711 co-relation queries the response was YES. [2024-06-28 02:05:40,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77427 conditions, 12140 events. 7837/12140 cut-off events. For 421681/421711 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 78468 event pairs, 1388 based on Foata normal form. 22/12155 useless extension candidates. Maximal degree in co-relation 77279. Up to 10353 conditions per place. [2024-06-28 02:05:40,899 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 355 selfloop transitions, 119 changer transitions 0/481 dead transitions. [2024-06-28 02:05:40,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 481 transitions, 7629 flow [2024-06-28 02:05:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:40,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 02:05:40,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 02:05:40,900 INFO L175 Difference]: Start difference. First operand has 318 places, 432 transitions, 6151 flow. Second operand 7 states and 175 transitions. [2024-06-28 02:05:40,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 481 transitions, 7629 flow [2024-06-28 02:05:42,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 481 transitions, 7439 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:42,402 INFO L231 Difference]: Finished difference. Result has 322 places, 432 transitions, 6211 flow [2024-06-28 02:05:42,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5961, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6211, PETRI_PLACES=322, PETRI_TRANSITIONS=432} [2024-06-28 02:05:42,403 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 271 predicate places. [2024-06-28 02:05:42,403 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 432 transitions, 6211 flow [2024-06-28 02:05:42,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:42,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:42,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:42,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:05:42,403 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:42,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:42,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1285497795, now seen corresponding path program 10 times [2024-06-28 02:05:42,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:42,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888692589] [2024-06-28 02:05:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:42,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:44,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:44,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888692589] [2024-06-28 02:05:44,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888692589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:44,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:44,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:44,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427594655] [2024-06-28 02:05:44,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:44,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:44,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:44,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:44,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:45,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:05:45,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 432 transitions, 6211 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:45,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:45,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:05:45,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:48,291 INFO L124 PetriNetUnfolderBase]: 7834/12132 cut-off events. [2024-06-28 02:05:48,291 INFO L125 PetriNetUnfolderBase]: For 423019/423049 co-relation queries the response was YES. [2024-06-28 02:05:48,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77270 conditions, 12132 events. 7834/12132 cut-off events. For 423019/423049 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 78444 event pairs, 1433 based on Foata normal form. 21/12146 useless extension candidates. Maximal degree in co-relation 77121. Up to 10782 conditions per place. [2024-06-28 02:05:48,468 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 370 selfloop transitions, 107 changer transitions 0/484 dead transitions. [2024-06-28 02:05:48,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 484 transitions, 7577 flow [2024-06-28 02:05:48,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:05:48,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541033434650456 [2024-06-28 02:05:48,469 INFO L175 Difference]: Start difference. First operand has 322 places, 432 transitions, 6211 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:05:48,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 484 transitions, 7577 flow [2024-06-28 02:05:50,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 484 transitions, 7360 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:50,387 INFO L231 Difference]: Finished difference. Result has 324 places, 432 transitions, 6227 flow [2024-06-28 02:05:50,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5996, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6227, PETRI_PLACES=324, PETRI_TRANSITIONS=432} [2024-06-28 02:05:50,388 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 273 predicate places. [2024-06-28 02:05:50,388 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 432 transitions, 6227 flow [2024-06-28 02:05:50,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:50,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:50,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:50,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:05:50,388 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:50,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash 839570617, now seen corresponding path program 10 times [2024-06-28 02:05:50,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:50,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357363984] [2024-06-28 02:05:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:50,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:53,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:53,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357363984] [2024-06-28 02:05:53,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357363984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:53,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:53,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:53,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984011441] [2024-06-28 02:05:53,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:53,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:53,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:53,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:05:53,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 432 transitions, 6227 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:53,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:53,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:05:53,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:56,193 INFO L124 PetriNetUnfolderBase]: 7828/12055 cut-off events. [2024-06-28 02:05:56,193 INFO L125 PetriNetUnfolderBase]: For 422351/422366 co-relation queries the response was YES. [2024-06-28 02:05:56,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76680 conditions, 12055 events. 7828/12055 cut-off events. For 422351/422366 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 77403 event pairs, 1351 based on Foata normal form. 16/12067 useless extension candidates. Maximal degree in co-relation 76531. Up to 10702 conditions per place. [2024-06-28 02:05:56,357 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 376 selfloop transitions, 96 changer transitions 0/479 dead transitions. [2024-06-28 02:05:56,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 479 transitions, 7495 flow [2024-06-28 02:05:56,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:56,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:05:56,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288753799392097 [2024-06-28 02:05:56,358 INFO L175 Difference]: Start difference. First operand has 324 places, 432 transitions, 6227 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:05:56,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 479 transitions, 7495 flow [2024-06-28 02:05:58,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 479 transitions, 7205 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 02:05:58,248 INFO L231 Difference]: Finished difference. Result has 322 places, 433 transitions, 6165 flow [2024-06-28 02:05:58,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5941, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6165, PETRI_PLACES=322, PETRI_TRANSITIONS=433} [2024-06-28 02:05:58,249 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 271 predicate places. [2024-06-28 02:05:58,249 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 433 transitions, 6165 flow [2024-06-28 02:05:58,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:58,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:58,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:58,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:05:58,249 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:58,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:58,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1462866465, now seen corresponding path program 11 times [2024-06-28 02:05:58,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:58,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142474619] [2024-06-28 02:05:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:58,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:01,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:01,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:01,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142474619] [2024-06-28 02:06:01,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142474619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:01,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:01,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:01,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445577986] [2024-06-28 02:06:01,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:01,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:01,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:01,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:01,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:01,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:06:01,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 433 transitions, 6165 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:01,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:01,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:06:01,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:04,848 INFO L124 PetriNetUnfolderBase]: 7825/12039 cut-off events. [2024-06-28 02:06:04,849 INFO L125 PetriNetUnfolderBase]: For 407576/407591 co-relation queries the response was YES. [2024-06-28 02:06:04,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76257 conditions, 12039 events. 7825/12039 cut-off events. For 407576/407591 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 77222 event pairs, 1355 based on Foata normal form. 15/12050 useless extension candidates. Maximal degree in co-relation 76110. Up to 10771 conditions per place. [2024-06-28 02:06:05,019 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 388 selfloop transitions, 113 changer transitions 0/508 dead transitions. [2024-06-28 02:06:05,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 508 transitions, 7637 flow [2024-06-28 02:06:05,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:06:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:06:05,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 02:06:05,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-06-28 02:06:05,020 INFO L175 Difference]: Start difference. First operand has 322 places, 433 transitions, 6165 flow. Second operand 9 states and 233 transitions. [2024-06-28 02:06:05,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 508 transitions, 7637 flow [2024-06-28 02:06:06,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 508 transitions, 7452 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:06,977 INFO L231 Difference]: Finished difference. Result has 326 places, 433 transitions, 6226 flow [2024-06-28 02:06:06,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5982, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6226, PETRI_PLACES=326, PETRI_TRANSITIONS=433} [2024-06-28 02:06:06,977 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 275 predicate places. [2024-06-28 02:06:06,977 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 433 transitions, 6226 flow [2024-06-28 02:06:06,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:06,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:06,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:06,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:06:06,978 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:06,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:06,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1285734945, now seen corresponding path program 12 times [2024-06-28 02:06:06,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:06,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053564532] [2024-06-28 02:06:06,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:06,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:09,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:09,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053564532] [2024-06-28 02:06:09,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053564532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:09,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:09,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988536249] [2024-06-28 02:06:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:09,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:09,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:09,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:09,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:09,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:06:09,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 433 transitions, 6226 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:09,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:09,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:06:09,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:13,313 INFO L124 PetriNetUnfolderBase]: 7822/12112 cut-off events. [2024-06-28 02:06:13,313 INFO L125 PetriNetUnfolderBase]: For 405198/405228 co-relation queries the response was YES. [2024-06-28 02:06:13,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76280 conditions, 12112 events. 7822/12112 cut-off events. For 405198/405228 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 78306 event pairs, 1427 based on Foata normal form. 21/12126 useless extension candidates. Maximal degree in co-relation 76133. Up to 10768 conditions per place. [2024-06-28 02:06:13,474 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 386 selfloop transitions, 113 changer transitions 0/506 dead transitions. [2024-06-28 02:06:13,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 506 transitions, 7602 flow [2024-06-28 02:06:13,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:06:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:06:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 02:06:13,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541371158392435 [2024-06-28 02:06:13,475 INFO L175 Difference]: Start difference. First operand has 326 places, 433 transitions, 6226 flow. Second operand 9 states and 229 transitions. [2024-06-28 02:06:13,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 506 transitions, 7602 flow [2024-06-28 02:06:15,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 506 transitions, 7292 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 02:06:15,268 INFO L231 Difference]: Finished difference. Result has 326 places, 433 transitions, 6160 flow [2024-06-28 02:06:15,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5916, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6160, PETRI_PLACES=326, PETRI_TRANSITIONS=433} [2024-06-28 02:06:15,269 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 275 predicate places. [2024-06-28 02:06:15,269 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 433 transitions, 6160 flow [2024-06-28 02:06:15,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:15,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:15,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:15,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:06:15,269 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:15,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:15,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1285734759, now seen corresponding path program 11 times [2024-06-28 02:06:15,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:15,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906471371] [2024-06-28 02:06:15,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:15,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:17,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:17,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906471371] [2024-06-28 02:06:17,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906471371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:17,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:17,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:17,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040446163] [2024-06-28 02:06:17,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:17,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:17,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:17,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:17,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:17,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:06:17,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 433 transitions, 6160 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:17,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:17,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:06:17,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:21,003 INFO L124 PetriNetUnfolderBase]: 7816/12092 cut-off events. [2024-06-28 02:06:21,004 INFO L125 PetriNetUnfolderBase]: For 386025/386055 co-relation queries the response was YES. [2024-06-28 02:06:21,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75767 conditions, 12092 events. 7816/12092 cut-off events. For 386025/386055 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 77965 event pairs, 1435 based on Foata normal form. 22/12107 useless extension candidates. Maximal degree in co-relation 75620. Up to 10918 conditions per place. [2024-06-28 02:06:21,192 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 399 selfloop transitions, 74 changer transitions 0/480 dead transitions. [2024-06-28 02:06:21,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 480 transitions, 7326 flow [2024-06-28 02:06:21,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:06:21,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-28 02:06:21,193 INFO L175 Difference]: Start difference. First operand has 326 places, 433 transitions, 6160 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:06:21,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 480 transitions, 7326 flow [2024-06-28 02:06:23,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 480 transitions, 7054 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 02:06:23,114 INFO L231 Difference]: Finished difference. Result has 323 places, 433 transitions, 6053 flow [2024-06-28 02:06:23,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5888, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6053, PETRI_PLACES=323, PETRI_TRANSITIONS=433} [2024-06-28 02:06:23,115 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 272 predicate places. [2024-06-28 02:06:23,115 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 433 transitions, 6053 flow [2024-06-28 02:06:23,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:23,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:23,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:23,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:06:23,116 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:23,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:23,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1504499227, now seen corresponding path program 12 times [2024-06-28 02:06:23,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:23,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716304511] [2024-06-28 02:06:23,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:23,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:25,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:25,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716304511] [2024-06-28 02:06:25,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716304511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:25,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:25,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:25,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620491565] [2024-06-28 02:06:25,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:25,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:25,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:25,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:25,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:25,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:06:25,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 433 transitions, 6053 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:25,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:25,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:06:25,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:28,875 INFO L124 PetriNetUnfolderBase]: 7810/12023 cut-off events. [2024-06-28 02:06:28,875 INFO L125 PetriNetUnfolderBase]: For 366583/366598 co-relation queries the response was YES. [2024-06-28 02:06:28,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74990 conditions, 12023 events. 7810/12023 cut-off events. For 366583/366598 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 77144 event pairs, 1341 based on Foata normal form. 16/12035 useless extension candidates. Maximal degree in co-relation 74844. Up to 10684 conditions per place. [2024-06-28 02:06:29,032 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 387 selfloop transitions, 102 changer transitions 0/496 dead transitions. [2024-06-28 02:06:29,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 496 transitions, 7259 flow [2024-06-28 02:06:29,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:06:29,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:06:29,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 02:06:29,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-28 02:06:29,033 INFO L175 Difference]: Start difference. First operand has 323 places, 433 transitions, 6053 flow. Second operand 9 states and 221 transitions. [2024-06-28 02:06:29,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 496 transitions, 7259 flow [2024-06-28 02:06:30,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 496 transitions, 7056 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 02:06:30,269 INFO L231 Difference]: Finished difference. Result has 325 places, 433 transitions, 6071 flow [2024-06-28 02:06:30,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5850, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6071, PETRI_PLACES=325, PETRI_TRANSITIONS=433} [2024-06-28 02:06:30,269 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 274 predicate places. [2024-06-28 02:06:30,270 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 433 transitions, 6071 flow [2024-06-28 02:06:30,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:30,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:30,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:30,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:06:30,270 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:30,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:30,271 INFO L85 PathProgramCache]: Analyzing trace with hash 247824789, now seen corresponding path program 2 times [2024-06-28 02:06:30,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:30,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651238235] [2024-06-28 02:06:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:30,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:34,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:34,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651238235] [2024-06-28 02:06:34,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651238235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:34,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:34,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:06:34,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049823273] [2024-06-28 02:06:34,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:34,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:06:34,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:34,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:06:34,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:06:34,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 02:06:34,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 433 transitions, 6071 flow. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:34,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:34,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 02:06:34,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:37,322 INFO L124 PetriNetUnfolderBase]: 7552/11760 cut-off events. [2024-06-28 02:06:37,322 INFO L125 PetriNetUnfolderBase]: For 378321/378420 co-relation queries the response was YES. [2024-06-28 02:06:37,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72994 conditions, 11760 events. 7552/11760 cut-off events. For 378321/378420 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 76978 event pairs, 1344 based on Foata normal form. 103/11776 useless extension candidates. Maximal degree in co-relation 72848. Up to 9805 conditions per place. [2024-06-28 02:06:37,498 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 357 selfloop transitions, 64 changer transitions 0/481 dead transitions. [2024-06-28 02:06:37,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 481 transitions, 7127 flow [2024-06-28 02:06:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:37,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:06:37,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541033434650456 [2024-06-28 02:06:37,500 INFO L175 Difference]: Start difference. First operand has 325 places, 433 transitions, 6071 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:06:37,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 481 transitions, 7127 flow [2024-06-28 02:06:38,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 481 transitions, 6861 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 02:06:38,881 INFO L231 Difference]: Finished difference. Result has 323 places, 435 transitions, 5997 flow [2024-06-28 02:06:38,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5805, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5997, PETRI_PLACES=323, PETRI_TRANSITIONS=435} [2024-06-28 02:06:38,882 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 272 predicate places. [2024-06-28 02:06:38,882 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 435 transitions, 5997 flow [2024-06-28 02:06:38,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:38,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:38,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:38,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:06:38,882 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:38,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:38,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1062719271, now seen corresponding path program 3 times [2024-06-28 02:06:38,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:38,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275873191] [2024-06-28 02:06:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:38,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:42,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:42,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275873191] [2024-06-28 02:06:42,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275873191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:42,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:42,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:42,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755125071] [2024-06-28 02:06:42,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:42,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:42,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:42,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:42,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:42,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 02:06:42,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 435 transitions, 5997 flow. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:42,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:42,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 02:06:42,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:45,515 INFO L124 PetriNetUnfolderBase]: 7732/12034 cut-off events. [2024-06-28 02:06:45,515 INFO L125 PetriNetUnfolderBase]: For 388397/388523 co-relation queries the response was YES. [2024-06-28 02:06:45,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74978 conditions, 12034 events. 7732/12034 cut-off events. For 388397/388523 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 78844 event pairs, 1348 based on Foata normal form. 116/12027 useless extension candidates. Maximal degree in co-relation 74832. Up to 10187 conditions per place. [2024-06-28 02:06:45,662 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 351 selfloop transitions, 67 changer transitions 0/478 dead transitions. [2024-06-28 02:06:45,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 478 transitions, 7069 flow [2024-06-28 02:06:45,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:06:45,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-28 02:06:45,664 INFO L175 Difference]: Start difference. First operand has 323 places, 435 transitions, 5997 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:06:45,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 478 transitions, 7069 flow [2024-06-28 02:06:46,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 478 transitions, 6907 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:46,968 INFO L231 Difference]: Finished difference. Result has 325 places, 436 transitions, 6001 flow [2024-06-28 02:06:46,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5843, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6001, PETRI_PLACES=325, PETRI_TRANSITIONS=436} [2024-06-28 02:06:46,969 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 274 predicate places. [2024-06-28 02:06:46,969 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 436 transitions, 6001 flow [2024-06-28 02:06:46,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:46,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:46,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:46,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:06:46,969 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:46,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:46,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1048838091, now seen corresponding path program 4 times [2024-06-28 02:06:46,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:46,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322593016] [2024-06-28 02:06:46,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:46,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:50,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:50,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322593016] [2024-06-28 02:06:50,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322593016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:50,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:50,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:50,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490298320] [2024-06-28 02:06:50,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:50,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:50,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:50,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:50,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:50,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 02:06:50,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 436 transitions, 6001 flow. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:50,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:50,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 02:06:50,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:53,155 INFO L124 PetriNetUnfolderBase]: 7818/12196 cut-off events. [2024-06-28 02:06:53,155 INFO L125 PetriNetUnfolderBase]: For 363959/364085 co-relation queries the response was YES. [2024-06-28 02:06:53,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74707 conditions, 12196 events. 7818/12196 cut-off events. For 363959/364085 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 80140 event pairs, 1370 based on Foata normal form. 112/12183 useless extension candidates. Maximal degree in co-relation 74560. Up to 9675 conditions per place. [2024-06-28 02:06:53,346 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 352 selfloop transitions, 72 changer transitions 0/484 dead transitions. [2024-06-28 02:06:53,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 484 transitions, 7177 flow [2024-06-28 02:06:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:53,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:53,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 02:06:53,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-28 02:06:53,347 INFO L175 Difference]: Start difference. First operand has 325 places, 436 transitions, 6001 flow. Second operand 7 states and 173 transitions. [2024-06-28 02:06:53,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 484 transitions, 7177 flow [2024-06-28 02:06:54,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 484 transitions, 7043 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:54,681 INFO L231 Difference]: Finished difference. Result has 328 places, 439 transitions, 6108 flow [2024-06-28 02:06:54,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5867, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6108, PETRI_PLACES=328, PETRI_TRANSITIONS=439} [2024-06-28 02:06:54,681 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 277 predicate places. [2024-06-28 02:06:54,681 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 439 transitions, 6108 flow [2024-06-28 02:06:54,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:54,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:54,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:54,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:06:54,682 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:54,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1874664335, now seen corresponding path program 1 times [2024-06-28 02:06:54,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:54,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597361432] [2024-06-28 02:06:54,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:54,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:57,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:57,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597361432] [2024-06-28 02:06:57,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597361432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:57,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:57,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:57,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528736331] [2024-06-28 02:06:57,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:57,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:57,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:57,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:57,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:06:57,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 439 transitions, 6108 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:57,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:57,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:06:57,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:00,448 INFO L124 PetriNetUnfolderBase]: 8358/13169 cut-off events. [2024-06-28 02:07:00,448 INFO L125 PetriNetUnfolderBase]: For 373416/373418 co-relation queries the response was YES. [2024-06-28 02:07:00,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80457 conditions, 13169 events. 8358/13169 cut-off events. For 373416/373418 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 88202 event pairs, 1901 based on Foata normal form. 2/13168 useless extension candidates. Maximal degree in co-relation 80308. Up to 11917 conditions per place. [2024-06-28 02:07:00,608 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 442 selfloop transitions, 44 changer transitions 0/493 dead transitions. [2024-06-28 02:07:00,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 493 transitions, 7528 flow [2024-06-28 02:07:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:07:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:07:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:07:00,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-28 02:07:00,609 INFO L175 Difference]: Start difference. First operand has 328 places, 439 transitions, 6108 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:07:00,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 493 transitions, 7528 flow [2024-06-28 02:07:02,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 493 transitions, 7429 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 02:07:02,190 INFO L231 Difference]: Finished difference. Result has 333 places, 445 transitions, 6293 flow [2024-06-28 02:07:02,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6009, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6293, PETRI_PLACES=333, PETRI_TRANSITIONS=445} [2024-06-28 02:07:02,191 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 282 predicate places. [2024-06-28 02:07:02,191 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 445 transitions, 6293 flow [2024-06-28 02:07:02,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:02,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:02,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:07:02,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:07:02,191 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:02,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:02,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1848427101, now seen corresponding path program 2 times [2024-06-28 02:07:02,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:02,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26358305] [2024-06-28 02:07:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:02,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:04,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:04,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26358305] [2024-06-28 02:07:04,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26358305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:04,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:04,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:04,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772719644] [2024-06-28 02:07:04,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:04,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:04,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:04,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:04,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:07:04,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 445 transitions, 6293 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:04,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:04,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:07:04,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:08,159 INFO L124 PetriNetUnfolderBase]: 8388/13211 cut-off events. [2024-06-28 02:07:08,159 INFO L125 PetriNetUnfolderBase]: For 384999/385001 co-relation queries the response was YES. [2024-06-28 02:07:08,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81495 conditions, 13211 events. 8388/13211 cut-off events. For 384999/385001 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 88458 event pairs, 1995 based on Foata normal form. 2/13210 useless extension candidates. Maximal degree in co-relation 81344. Up to 12040 conditions per place. [2024-06-28 02:07:08,381 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 444 selfloop transitions, 39 changer transitions 0/490 dead transitions. [2024-06-28 02:07:08,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 490 transitions, 7467 flow [2024-06-28 02:07:08,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:07:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:07:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 02:07:08,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-28 02:07:08,383 INFO L175 Difference]: Start difference. First operand has 333 places, 445 transitions, 6293 flow. Second operand 8 states and 185 transitions. [2024-06-28 02:07:08,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 490 transitions, 7467 flow [2024-06-28 02:07:10,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 490 transitions, 7256 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-28 02:07:10,070 INFO L231 Difference]: Finished difference. Result has 337 places, 448 transitions, 6270 flow [2024-06-28 02:07:10,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6124, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6270, PETRI_PLACES=337, PETRI_TRANSITIONS=448} [2024-06-28 02:07:10,070 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 286 predicate places. [2024-06-28 02:07:10,070 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 448 transitions, 6270 flow [2024-06-28 02:07:10,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:10,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:10,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:07:10,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:07:10,071 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:10,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:10,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1759255055, now seen corresponding path program 3 times [2024-06-28 02:07:10,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:10,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821849368] [2024-06-28 02:07:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:10,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:12,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:12,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821849368] [2024-06-28 02:07:12,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821849368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:12,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:12,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:12,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832000392] [2024-06-28 02:07:12,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:12,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:12,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:12,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:12,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:07:12,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 448 transitions, 6270 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:12,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:12,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:07:12,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:16,084 INFO L124 PetriNetUnfolderBase]: 8418/13253 cut-off events. [2024-06-28 02:07:16,084 INFO L125 PetriNetUnfolderBase]: For 388575/388577 co-relation queries the response was YES. [2024-06-28 02:07:16,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81355 conditions, 13253 events. 8418/13253 cut-off events. For 388575/388577 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 88786 event pairs, 1995 based on Foata normal form. 2/13252 useless extension candidates. Maximal degree in co-relation 81202. Up to 12123 conditions per place. [2024-06-28 02:07:16,241 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 454 selfloop transitions, 28 changer transitions 0/489 dead transitions. [2024-06-28 02:07:16,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 489 transitions, 7394 flow [2024-06-28 02:07:16,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:07:16,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:07:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 02:07:16,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-06-28 02:07:16,243 INFO L175 Difference]: Start difference. First operand has 337 places, 448 transitions, 6270 flow. Second operand 8 states and 180 transitions. [2024-06-28 02:07:16,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 489 transitions, 7394 flow [2024-06-28 02:07:17,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 489 transitions, 7276 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 02:07:17,933 INFO L231 Difference]: Finished difference. Result has 339 places, 451 transitions, 6282 flow [2024-06-28 02:07:17,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6152, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6282, PETRI_PLACES=339, PETRI_TRANSITIONS=451} [2024-06-28 02:07:17,934 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 288 predicate places. [2024-06-28 02:07:17,934 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 451 transitions, 6282 flow [2024-06-28 02:07:17,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:17,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:17,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:07:17,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:07:17,934 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:17,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:17,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1963902969, now seen corresponding path program 1 times [2024-06-28 02:07:17,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:17,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755789707] [2024-06-28 02:07:17,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:17,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:21,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:21,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755789707] [2024-06-28 02:07:21,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755789707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:21,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:21,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:07:21,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361259334] [2024-06-28 02:07:21,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:21,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:07:21,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:21,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:07:21,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:07:21,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:07:21,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 451 transitions, 6282 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:21,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:21,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:07:21,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:24,641 INFO L124 PetriNetUnfolderBase]: 8448/13279 cut-off events. [2024-06-28 02:07:24,641 INFO L125 PetriNetUnfolderBase]: For 397801/397803 co-relation queries the response was YES. [2024-06-28 02:07:24,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81694 conditions, 13279 events. 8448/13279 cut-off events. For 397801/397803 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 88804 event pairs, 1915 based on Foata normal form. 2/13278 useless extension candidates. Maximal degree in co-relation 81540. Up to 12082 conditions per place. [2024-06-28 02:07:24,855 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 450 selfloop transitions, 38 changer transitions 0/495 dead transitions. [2024-06-28 02:07:24,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 495 transitions, 7452 flow [2024-06-28 02:07:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:07:24,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:07:24,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 02:07:24,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-28 02:07:24,856 INFO L175 Difference]: Start difference. First operand has 339 places, 451 transitions, 6282 flow. Second operand 8 states and 185 transitions. [2024-06-28 02:07:24,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 495 transitions, 7452 flow [2024-06-28 02:07:26,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 495 transitions, 7350 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 02:07:26,747 INFO L231 Difference]: Finished difference. Result has 341 places, 454 transitions, 6358 flow [2024-06-28 02:07:26,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6180, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6358, PETRI_PLACES=341, PETRI_TRANSITIONS=454} [2024-06-28 02:07:26,748 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 290 predicate places. [2024-06-28 02:07:26,748 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 454 transitions, 6358 flow [2024-06-28 02:07:26,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:26,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:26,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:07:26,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:07:26,748 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:26,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:26,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1289056743, now seen corresponding path program 4 times [2024-06-28 02:07:26,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:26,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099301017] [2024-06-28 02:07:26,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:26,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:29,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:29,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099301017] [2024-06-28 02:07:29,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099301017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:29,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:29,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:29,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058498168] [2024-06-28 02:07:29,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:29,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:29,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:29,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:29,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:29,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:07:29,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 454 transitions, 6358 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:29,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:29,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:07:29,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:32,797 INFO L124 PetriNetUnfolderBase]: 8443/13288 cut-off events. [2024-06-28 02:07:32,798 INFO L125 PetriNetUnfolderBase]: For 405628/405630 co-relation queries the response was YES. [2024-06-28 02:07:32,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82098 conditions, 13288 events. 8443/13288 cut-off events. For 405628/405630 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 88854 event pairs, 1900 based on Foata normal form. 2/13287 useless extension candidates. Maximal degree in co-relation 81943. Up to 12068 conditions per place. [2024-06-28 02:07:32,972 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 447 selfloop transitions, 41 changer transitions 0/495 dead transitions. [2024-06-28 02:07:32,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 495 transitions, 7444 flow [2024-06-28 02:07:32,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:07:32,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:07:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 02:07:32,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167173252279635 [2024-06-28 02:07:32,974 INFO L175 Difference]: Start difference. First operand has 341 places, 454 transitions, 6358 flow. Second operand 7 states and 170 transitions. [2024-06-28 02:07:32,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 495 transitions, 7444 flow [2024-06-28 02:07:34,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 495 transitions, 7250 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-28 02:07:34,820 INFO L231 Difference]: Finished difference. Result has 342 places, 454 transitions, 6260 flow [2024-06-28 02:07:34,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6164, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6260, PETRI_PLACES=342, PETRI_TRANSITIONS=454} [2024-06-28 02:07:34,820 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 291 predicate places. [2024-06-28 02:07:34,820 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 454 transitions, 6260 flow [2024-06-28 02:07:34,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:34,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:34,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:07:34,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:07:34,821 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:34,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:34,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1285304169, now seen corresponding path program 2 times [2024-06-28 02:07:34,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:34,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006240824] [2024-06-28 02:07:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:34,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:37,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:37,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006240824] [2024-06-28 02:07:37,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006240824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:37,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:37,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:07:37,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85361939] [2024-06-28 02:07:37,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:37,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:07:37,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:37,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:07:37,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:07:37,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:07:37,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 454 transitions, 6260 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:37,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:37,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:07:37,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:41,279 INFO L124 PetriNetUnfolderBase]: 8473/13314 cut-off events. [2024-06-28 02:07:41,279 INFO L125 PetriNetUnfolderBase]: For 413047/413049 co-relation queries the response was YES. [2024-06-28 02:07:41,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82235 conditions, 13314 events. 8473/13314 cut-off events. For 413047/413049 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 88900 event pairs, 1914 based on Foata normal form. 2/13313 useless extension candidates. Maximal degree in co-relation 82079. Up to 12095 conditions per place. [2024-06-28 02:07:41,481 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 445 selfloop transitions, 41 changer transitions 0/493 dead transitions. [2024-06-28 02:07:41,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 493 transitions, 7420 flow [2024-06-28 02:07:41,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:07:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:07:41,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 02:07:41,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-06-28 02:07:41,482 INFO L175 Difference]: Start difference. First operand has 342 places, 454 transitions, 6260 flow. Second operand 7 states and 165 transitions. [2024-06-28 02:07:41,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 493 transitions, 7420 flow [2024-06-28 02:07:43,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 493 transitions, 7326 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:07:43,387 INFO L231 Difference]: Finished difference. Result has 343 places, 457 transitions, 6360 flow [2024-06-28 02:07:43,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6166, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6360, PETRI_PLACES=343, PETRI_TRANSITIONS=457} [2024-06-28 02:07:43,387 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 292 predicate places. [2024-06-28 02:07:43,387 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 457 transitions, 6360 flow [2024-06-28 02:07:43,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:43,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:43,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:07:43,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:07:43,387 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:43,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:43,388 INFO L85 PathProgramCache]: Analyzing trace with hash 852910537, now seen corresponding path program 3 times [2024-06-28 02:07:43,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:43,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718796807] [2024-06-28 02:07:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:43,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:46,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:46,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718796807] [2024-06-28 02:07:46,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718796807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:46,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:46,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:07:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566627755] [2024-06-28 02:07:46,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:46,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:07:46,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:46,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:07:46,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:07:46,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:07:46,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 457 transitions, 6360 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:46,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:46,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:07:46,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:49,909 INFO L124 PetriNetUnfolderBase]: 8503/13373 cut-off events. [2024-06-28 02:07:49,909 INFO L125 PetriNetUnfolderBase]: For 425688/425693 co-relation queries the response was YES. [2024-06-28 02:07:50,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83339 conditions, 13373 events. 8503/13373 cut-off events. For 425688/425693 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 89449 event pairs, 1923 based on Foata normal form. 4/13373 useless extension candidates. Maximal degree in co-relation 83182. Up to 12159 conditions per place. [2024-06-28 02:07:50,106 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 447 selfloop transitions, 37 changer transitions 0/491 dead transitions. [2024-06-28 02:07:50,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 491 transitions, 7508 flow [2024-06-28 02:07:50,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:07:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:07:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 02:07:50,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48328267477203646 [2024-06-28 02:07:50,108 INFO L175 Difference]: Start difference. First operand has 343 places, 457 transitions, 6360 flow. Second operand 7 states and 159 transitions. [2024-06-28 02:07:50,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 491 transitions, 7508 flow [2024-06-28 02:07:52,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 491 transitions, 7336 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-28 02:07:52,339 INFO L231 Difference]: Finished difference. Result has 345 places, 460 transitions, 6376 flow [2024-06-28 02:07:52,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6194, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6376, PETRI_PLACES=345, PETRI_TRANSITIONS=460} [2024-06-28 02:07:52,340 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 294 predicate places. [2024-06-28 02:07:52,340 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 460 transitions, 6376 flow [2024-06-28 02:07:52,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:52,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:52,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:07:52,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:07:52,341 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:07:52,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:52,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1048832139, now seen corresponding path program 4 times [2024-06-28 02:07:52,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:52,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898108581] [2024-06-28 02:07:52,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:52,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:55,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:55,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898108581] [2024-06-28 02:07:55,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898108581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:55,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:55,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:07:55,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303397061] [2024-06-28 02:07:55,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:55,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:07:55,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:55,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:07:55,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:07:55,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:07:55,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 460 transitions, 6376 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:55,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:55,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:07:55,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:58,885 INFO L124 PetriNetUnfolderBase]: 8498/13356 cut-off events. [2024-06-28 02:07:58,885 INFO L125 PetriNetUnfolderBase]: For 417808/417813 co-relation queries the response was YES. [2024-06-28 02:07:59,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82740 conditions, 13356 events. 8498/13356 cut-off events. For 417808/417813 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 89206 event pairs, 1886 based on Foata normal form. 4/13356 useless extension candidates. Maximal degree in co-relation 82582. Up to 12058 conditions per place. [2024-06-28 02:07:59,061 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 439 selfloop transitions, 48 changer transitions 0/494 dead transitions. [2024-06-28 02:07:59,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 494 transitions, 7530 flow [2024-06-28 02:07:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:07:59,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:07:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 02:07:59,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48328267477203646 [2024-06-28 02:07:59,062 INFO L175 Difference]: Start difference. First operand has 345 places, 460 transitions, 6376 flow. Second operand 7 states and 159 transitions. [2024-06-28 02:07:59,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 494 transitions, 7530 flow [2024-06-28 02:08:01,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 494 transitions, 7370 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 02:08:01,102 INFO L231 Difference]: Finished difference. Result has 347 places, 463 transitions, 6426 flow [2024-06-28 02:08:01,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6216, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6426, PETRI_PLACES=347, PETRI_TRANSITIONS=463} [2024-06-28 02:08:01,102 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 296 predicate places. [2024-06-28 02:08:01,102 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 463 transitions, 6426 flow [2024-06-28 02:08:01,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:01,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:01,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:01,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:08:01,103 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:01,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:01,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1339429000, now seen corresponding path program 1 times [2024-06-28 02:08:01,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:01,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055528075] [2024-06-28 02:08:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:01,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:01,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:01,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055528075] [2024-06-28 02:08:01,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055528075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:01,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:01,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:08:01,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509963624] [2024-06-28 02:08:01,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:01,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:08:01,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:01,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:08:01,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:08:01,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-28 02:08:01,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 463 transitions, 6426 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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 02:08:01,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:01,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-28 02:08:01,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:03,076 INFO L124 PetriNetUnfolderBase]: 5005/8654 cut-off events. [2024-06-28 02:08:03,076 INFO L125 PetriNetUnfolderBase]: For 411922/412564 co-relation queries the response was YES. [2024-06-28 02:08:03,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52543 conditions, 8654 events. 5005/8654 cut-off events. For 411922/412564 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 64008 event pairs, 835 based on Foata normal form. 497/8709 useless extension candidates. Maximal degree in co-relation 52385. Up to 3595 conditions per place. [2024-06-28 02:08:03,219 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 160 selfloop transitions, 90 changer transitions 0/431 dead transitions. [2024-06-28 02:08:03,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 431 transitions, 6472 flow [2024-06-28 02:08:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:08:03,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:08:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-28 02:08:03,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-28 02:08:03,220 INFO L175 Difference]: Start difference. First operand has 347 places, 463 transitions, 6426 flow. Second operand 4 states and 120 transitions. [2024-06-28 02:08:03,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 431 transitions, 6472 flow [2024-06-28 02:08:04,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 431 transitions, 5285 flow, removed 254 selfloop flow, removed 36 redundant places. [2024-06-28 02:08:04,997 INFO L231 Difference]: Finished difference. Result has 316 places, 390 transitions, 4695 flow [2024-06-28 02:08:04,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4281, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4695, PETRI_PLACES=316, PETRI_TRANSITIONS=390} [2024-06-28 02:08:04,997 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 265 predicate places. [2024-06-28 02:08:04,997 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 390 transitions, 4695 flow [2024-06-28 02:08:04,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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 02:08:04,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:04,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:04,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:08:04,998 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:04,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:04,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1840366836, now seen corresponding path program 1 times [2024-06-28 02:08:04,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:04,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341600725] [2024-06-28 02:08:04,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:04,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:08,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:08,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341600725] [2024-06-28 02:08:08,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341600725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:08,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:08,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:08,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923545676] [2024-06-28 02:08:08,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:08,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:08,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:08,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:08,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 390 transitions, 4695 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:08,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:08,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:08,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:12,037 INFO L124 PetriNetUnfolderBase]: 7589/12157 cut-off events. [2024-06-28 02:08:12,037 INFO L125 PetriNetUnfolderBase]: For 403148/403160 co-relation queries the response was YES. [2024-06-28 02:08:12,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72445 conditions, 12157 events. 7589/12157 cut-off events. For 403148/403160 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 81035 event pairs, 2074 based on Foata normal form. 20/12174 useless extension candidates. Maximal degree in co-relation 72302. Up to 10340 conditions per place. [2024-06-28 02:08:12,184 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 391 selfloop transitions, 73 changer transitions 6/477 dead transitions. [2024-06-28 02:08:12,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 477 transitions, 6288 flow [2024-06-28 02:08:12,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:08:12,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:08:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 252 transitions. [2024-06-28 02:08:12,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4874274661508704 [2024-06-28 02:08:12,185 INFO L175 Difference]: Start difference. First operand has 316 places, 390 transitions, 4695 flow. Second operand 11 states and 252 transitions. [2024-06-28 02:08:12,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 477 transitions, 6288 flow [2024-06-28 02:08:13,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 477 transitions, 6261 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:08:13,334 INFO L231 Difference]: Finished difference. Result has 326 places, 403 transitions, 5099 flow [2024-06-28 02:08:13,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4675, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5099, PETRI_PLACES=326, PETRI_TRANSITIONS=403} [2024-06-28 02:08:13,335 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 275 predicate places. [2024-06-28 02:08:13,335 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 403 transitions, 5099 flow [2024-06-28 02:08:13,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:13,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:13,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:13,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:08:13,335 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:13,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:13,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1953198540, now seen corresponding path program 2 times [2024-06-28 02:08:13,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:13,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090606577] [2024-06-28 02:08:13,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:13,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:17,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:17,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090606577] [2024-06-28 02:08:17,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090606577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:17,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:17,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:17,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14631169] [2024-06-28 02:08:17,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:17,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:17,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:17,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:17,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:17,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:17,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 403 transitions, 5099 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:17,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:17,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:17,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:20,400 INFO L124 PetriNetUnfolderBase]: 7154/11388 cut-off events. [2024-06-28 02:08:20,400 INFO L125 PetriNetUnfolderBase]: For 396577/396589 co-relation queries the response was YES. [2024-06-28 02:08:20,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68895 conditions, 11388 events. 7154/11388 cut-off events. For 396577/396589 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 74166 event pairs, 2474 based on Foata normal form. 20/11405 useless extension candidates. Maximal degree in co-relation 68749. Up to 10098 conditions per place. [2024-06-28 02:08:20,548 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 398 selfloop transitions, 79 changer transitions 0/484 dead transitions. [2024-06-28 02:08:20,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 484 transitions, 6620 flow [2024-06-28 02:08:20,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:08:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:08:20,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 254 transitions. [2024-06-28 02:08:20,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450354609929078 [2024-06-28 02:08:20,549 INFO L175 Difference]: Start difference. First operand has 326 places, 403 transitions, 5099 flow. Second operand 12 states and 254 transitions. [2024-06-28 02:08:20,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 484 transitions, 6620 flow [2024-06-28 02:08:21,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 484 transitions, 6307 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 02:08:21,844 INFO L231 Difference]: Finished difference. Result has 332 places, 422 transitions, 5316 flow [2024-06-28 02:08:21,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4820, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5316, PETRI_PLACES=332, PETRI_TRANSITIONS=422} [2024-06-28 02:08:21,844 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 281 predicate places. [2024-06-28 02:08:21,844 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 422 transitions, 5316 flow [2024-06-28 02:08:21,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:21,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:21,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:21,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:08:21,845 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:21,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:21,845 INFO L85 PathProgramCache]: Analyzing trace with hash 647132942, now seen corresponding path program 1 times [2024-06-28 02:08:21,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:21,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693723561] [2024-06-28 02:08:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:21,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:25,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:25,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693723561] [2024-06-28 02:08:25,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693723561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:25,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:25,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:25,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211915394] [2024-06-28 02:08:25,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:25,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:25,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:25,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:25,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:25,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:25,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 422 transitions, 5316 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:25,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:25,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:25,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:28,001 INFO L124 PetriNetUnfolderBase]: 7173/11411 cut-off events. [2024-06-28 02:08:28,001 INFO L125 PetriNetUnfolderBase]: For 382686/382698 co-relation queries the response was YES. [2024-06-28 02:08:28,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68628 conditions, 11411 events. 7173/11411 cut-off events. For 382686/382698 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 74228 event pairs, 2555 based on Foata normal form. 13/11421 useless extension candidates. Maximal degree in co-relation 68481. Up to 10378 conditions per place. [2024-06-28 02:08:28,167 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 392 selfloop transitions, 75 changer transitions 0/474 dead transitions. [2024-06-28 02:08:28,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 474 transitions, 6672 flow [2024-06-28 02:08:28,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:08:28,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:08:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 200 transitions. [2024-06-28 02:08:28,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728132387706856 [2024-06-28 02:08:28,169 INFO L175 Difference]: Start difference. First operand has 332 places, 422 transitions, 5316 flow. Second operand 9 states and 200 transitions. [2024-06-28 02:08:28,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 474 transitions, 6672 flow [2024-06-28 02:08:29,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 474 transitions, 6523 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 02:08:29,593 INFO L231 Difference]: Finished difference. Result has 335 places, 428 transitions, 5457 flow [2024-06-28 02:08:29,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5167, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5457, PETRI_PLACES=335, PETRI_TRANSITIONS=428} [2024-06-28 02:08:29,593 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 284 predicate places. [2024-06-28 02:08:29,593 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 428 transitions, 5457 flow [2024-06-28 02:08:29,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:29,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:29,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:29,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:08:29,594 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:29,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:29,594 INFO L85 PathProgramCache]: Analyzing trace with hash -153967620, now seen corresponding path program 2 times [2024-06-28 02:08:29,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:29,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486896750] [2024-06-28 02:08:29,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:29,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:33,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486896750] [2024-06-28 02:08:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486896750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:33,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:33,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111749827] [2024-06-28 02:08:33,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:33,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:33,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:33,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:33,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:33,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:33,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 428 transitions, 5457 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:33,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:33,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:33,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:36,310 INFO L124 PetriNetUnfolderBase]: 7197/11459 cut-off events. [2024-06-28 02:08:36,310 INFO L125 PetriNetUnfolderBase]: For 388521/388533 co-relation queries the response was YES. [2024-06-28 02:08:36,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68943 conditions, 11459 events. 7197/11459 cut-off events. For 388521/388533 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 74724 event pairs, 2561 based on Foata normal form. 13/11469 useless extension candidates. Maximal degree in co-relation 68794. Up to 10433 conditions per place. [2024-06-28 02:08:36,496 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 395 selfloop transitions, 76 changer transitions 0/478 dead transitions. [2024-06-28 02:08:36,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 478 transitions, 6675 flow [2024-06-28 02:08:36,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:08:36,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:08:36,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-28 02:08:36,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458628841607565 [2024-06-28 02:08:36,497 INFO L175 Difference]: Start difference. First operand has 335 places, 428 transitions, 5457 flow. Second operand 9 states and 194 transitions. [2024-06-28 02:08:36,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 478 transitions, 6675 flow [2024-06-28 02:08:38,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 478 transitions, 6478 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 02:08:38,149 INFO L231 Difference]: Finished difference. Result has 339 places, 437 transitions, 5571 flow [2024-06-28 02:08:38,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5292, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5571, PETRI_PLACES=339, PETRI_TRANSITIONS=437} [2024-06-28 02:08:38,149 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 288 predicate places. [2024-06-28 02:08:38,150 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 437 transitions, 5571 flow [2024-06-28 02:08:38,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:38,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:38,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:38,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:08:38,150 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:38,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash 2034447246, now seen corresponding path program 1 times [2024-06-28 02:08:38,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:38,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653042203] [2024-06-28 02:08:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:38,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:41,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:41,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:41,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653042203] [2024-06-28 02:08:41,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653042203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:41,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:41,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:41,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64147980] [2024-06-28 02:08:41,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:41,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:41,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:41,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:41,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:41,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:41,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 437 transitions, 5571 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:41,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:41,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:41,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:45,056 INFO L124 PetriNetUnfolderBase]: 7411/11767 cut-off events. [2024-06-28 02:08:45,056 INFO L125 PetriNetUnfolderBase]: For 408506/408525 co-relation queries the response was YES. [2024-06-28 02:08:45,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72068 conditions, 11767 events. 7411/11767 cut-off events. For 408506/408525 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 76660 event pairs, 2561 based on Foata normal form. 10/11769 useless extension candidates. Maximal degree in co-relation 71917. Up to 10582 conditions per place. [2024-06-28 02:08:45,206 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 419 selfloop transitions, 111 changer transitions 0/537 dead transitions. [2024-06-28 02:08:45,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 537 transitions, 7934 flow [2024-06-28 02:08:45,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:08:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:08:45,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 244 transitions. [2024-06-28 02:08:45,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326241134751773 [2024-06-28 02:08:45,207 INFO L175 Difference]: Start difference. First operand has 339 places, 437 transitions, 5571 flow. Second operand 12 states and 244 transitions. [2024-06-28 02:08:45,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 537 transitions, 7934 flow [2024-06-28 02:08:46,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 537 transitions, 7675 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 02:08:46,833 INFO L231 Difference]: Finished difference. Result has 352 places, 489 transitions, 6692 flow [2024-06-28 02:08:46,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5392, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6692, PETRI_PLACES=352, PETRI_TRANSITIONS=489} [2024-06-28 02:08:46,834 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 301 predicate places. [2024-06-28 02:08:46,834 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 489 transitions, 6692 flow [2024-06-28 02:08:46,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:46,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:46,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:46,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:08:46,835 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:46,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:46,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1779908148, now seen corresponding path program 3 times [2024-06-28 02:08:46,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:46,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74586855] [2024-06-28 02:08:46,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:46,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:50,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74586855] [2024-06-28 02:08:50,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74586855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:50,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:50,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:50,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370631134] [2024-06-28 02:08:50,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:50,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:50,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:50,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:50,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:50,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:50,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 489 transitions, 6692 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:50,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:50,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:50,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:53,534 INFO L124 PetriNetUnfolderBase]: 7549/11958 cut-off events. [2024-06-28 02:08:53,534 INFO L125 PetriNetUnfolderBase]: For 440019/440021 co-relation queries the response was YES. [2024-06-28 02:08:53,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74053 conditions, 11958 events. 7549/11958 cut-off events. For 440019/440021 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 77746 event pairs, 2541 based on Foata normal form. 8/11963 useless extension candidates. Maximal degree in co-relation 73894. Up to 10566 conditions per place. [2024-06-28 02:08:53,719 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 436 selfloop transitions, 103 changer transitions 0/546 dead transitions. [2024-06-28 02:08:53,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 546 transitions, 8067 flow [2024-06-28 02:08:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:08:53,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:08:53,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 249 transitions. [2024-06-28 02:08:53,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44148936170212766 [2024-06-28 02:08:53,721 INFO L175 Difference]: Start difference. First operand has 352 places, 489 transitions, 6692 flow. Second operand 12 states and 249 transitions. [2024-06-28 02:08:53,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 546 transitions, 8067 flow [2024-06-28 02:08:55,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 546 transitions, 8001 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-06-28 02:08:55,849 INFO L231 Difference]: Finished difference. Result has 364 places, 494 transitions, 6969 flow [2024-06-28 02:08:55,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6626, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6969, PETRI_PLACES=364, PETRI_TRANSITIONS=494} [2024-06-28 02:08:55,849 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 313 predicate places. [2024-06-28 02:08:55,849 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 494 transitions, 6969 flow [2024-06-28 02:08:55,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:55,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:55,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:55,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:08:55,850 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:55,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:55,851 INFO L85 PathProgramCache]: Analyzing trace with hash 824384618, now seen corresponding path program 2 times [2024-06-28 02:08:55,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:55,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862798182] [2024-06-28 02:08:55,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:55,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:59,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:59,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862798182] [2024-06-28 02:08:59,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862798182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:59,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:59,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:59,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880234644] [2024-06-28 02:08:59,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:59,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:59,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:59,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:59,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:59,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:08:59,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 494 transitions, 6969 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:59,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:59,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:08:59,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:02,914 INFO L124 PetriNetUnfolderBase]: 7693/12167 cut-off events. [2024-06-28 02:09:02,914 INFO L125 PetriNetUnfolderBase]: For 467737/467745 co-relation queries the response was YES. [2024-06-28 02:09:03,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77146 conditions, 12167 events. 7693/12167 cut-off events. For 467737/467745 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 79084 event pairs, 2591 based on Foata normal form. 12/12176 useless extension candidates. Maximal degree in co-relation 76983. Up to 10796 conditions per place. [2024-06-28 02:09:03,108 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 414 selfloop transitions, 160 changer transitions 0/581 dead transitions. [2024-06-28 02:09:03,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 581 transitions, 9259 flow [2024-06-28 02:09:03,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 02:09:03,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 02:09:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 287 transitions. [2024-06-28 02:09:03,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43617021276595747 [2024-06-28 02:09:03,109 INFO L175 Difference]: Start difference. First operand has 364 places, 494 transitions, 6969 flow. Second operand 14 states and 287 transitions. [2024-06-28 02:09:03,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 581 transitions, 9259 flow [2024-06-28 02:09:04,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 581 transitions, 9077 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 02:09:04,841 INFO L231 Difference]: Finished difference. Result has 373 places, 520 transitions, 7632 flow [2024-06-28 02:09:04,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6787, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7632, PETRI_PLACES=373, PETRI_TRANSITIONS=520} [2024-06-28 02:09:04,842 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 322 predicate places. [2024-06-28 02:09:04,842 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 520 transitions, 7632 flow [2024-06-28 02:09:04,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:04,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:04,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:04,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:09:04,842 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:04,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:04,842 INFO L85 PathProgramCache]: Analyzing trace with hash -207574634, now seen corresponding path program 3 times [2024-06-28 02:09:04,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:04,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195576145] [2024-06-28 02:09:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:04,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:08,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:08,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195576145] [2024-06-28 02:09:08,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195576145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:08,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:08,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:08,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078749150] [2024-06-28 02:09:08,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:08,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:08,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:08,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:08,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:08,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:09:08,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 520 transitions, 7632 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:08,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:08,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:09:08,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:12,017 INFO L124 PetriNetUnfolderBase]: 7701/12169 cut-off events. [2024-06-28 02:09:12,017 INFO L125 PetriNetUnfolderBase]: For 465579/465587 co-relation queries the response was YES. [2024-06-28 02:09:12,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77636 conditions, 12169 events. 7701/12169 cut-off events. For 465579/465587 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 79025 event pairs, 2629 based on Foata normal form. 9/12175 useless extension candidates. Maximal degree in co-relation 77470. Up to 11030 conditions per place. [2024-06-28 02:09:12,263 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 439 selfloop transitions, 124 changer transitions 0/570 dead transitions. [2024-06-28 02:09:12,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 570 transitions, 8962 flow [2024-06-28 02:09:12,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:09:12,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:09:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 242 transitions. [2024-06-28 02:09:12,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42907801418439717 [2024-06-28 02:09:12,264 INFO L175 Difference]: Start difference. First operand has 373 places, 520 transitions, 7632 flow. Second operand 12 states and 242 transitions. [2024-06-28 02:09:12,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 570 transitions, 8962 flow [2024-06-28 02:09:14,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 570 transitions, 8670 flow, removed 78 selfloop flow, removed 8 redundant places. [2024-06-28 02:09:14,416 INFO L231 Difference]: Finished difference. Result has 377 places, 523 transitions, 7653 flow [2024-06-28 02:09:14,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7340, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7653, PETRI_PLACES=377, PETRI_TRANSITIONS=523} [2024-06-28 02:09:14,416 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 326 predicate places. [2024-06-28 02:09:14,416 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 523 transitions, 7653 flow [2024-06-28 02:09:14,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:14,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:14,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:14,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:09:14,417 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:14,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:14,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2083151380, now seen corresponding path program 3 times [2024-06-28 02:09:14,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:14,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496434297] [2024-06-28 02:09:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:14,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:18,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:18,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496434297] [2024-06-28 02:09:18,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496434297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:18,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:18,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:18,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350287857] [2024-06-28 02:09:18,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:18,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:18,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:18,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:18,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:18,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:09:18,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 523 transitions, 7653 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:18,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:18,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:09:18,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:22,194 INFO L124 PetriNetUnfolderBase]: 7689/12159 cut-off events. [2024-06-28 02:09:22,194 INFO L125 PetriNetUnfolderBase]: For 465083/465091 co-relation queries the response was YES. [2024-06-28 02:09:22,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77078 conditions, 12159 events. 7689/12159 cut-off events. For 465083/465091 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 79090 event pairs, 2591 based on Foata normal form. 12/12168 useless extension candidates. Maximal degree in co-relation 76910. Up to 10797 conditions per place. [2024-06-28 02:09:22,382 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 411 selfloop transitions, 164 changer transitions 0/582 dead transitions. [2024-06-28 02:09:22,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 582 transitions, 9309 flow [2024-06-28 02:09:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 02:09:22,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 02:09:22,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 283 transitions. [2024-06-28 02:09:22,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43009118541033436 [2024-06-28 02:09:22,383 INFO L175 Difference]: Start difference. First operand has 377 places, 523 transitions, 7653 flow. Second operand 14 states and 283 transitions. [2024-06-28 02:09:22,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 582 transitions, 9309 flow [2024-06-28 02:09:24,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 582 transitions, 8973 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-28 02:09:24,234 INFO L231 Difference]: Finished difference. Result has 381 places, 523 transitions, 7655 flow [2024-06-28 02:09:24,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7317, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7655, PETRI_PLACES=381, PETRI_TRANSITIONS=523} [2024-06-28 02:09:24,234 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 330 predicate places. [2024-06-28 02:09:24,234 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 523 transitions, 7655 flow [2024-06-28 02:09:24,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:24,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:24,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:24,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:09:24,234 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:24,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:24,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1269359786, now seen corresponding path program 4 times [2024-06-28 02:09:24,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:24,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427626362] [2024-06-28 02:09:24,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:24,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:27,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:27,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427626362] [2024-06-28 02:09:27,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427626362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:27,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:27,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:27,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547126928] [2024-06-28 02:09:27,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:27,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:27,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:27,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:27,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:27,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:09:27,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 523 transitions, 7655 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:27,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:27,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:09:27,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:31,566 INFO L124 PetriNetUnfolderBase]: 7719/12202 cut-off events. [2024-06-28 02:09:31,567 INFO L125 PetriNetUnfolderBase]: For 472515/472517 co-relation queries the response was YES. [2024-06-28 02:09:31,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77846 conditions, 12202 events. 7719/12202 cut-off events. For 472515/472517 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 79303 event pairs, 2672 based on Foata normal form. 1/12197 useless extension candidates. Maximal degree in co-relation 77678. Up to 10594 conditions per place. [2024-06-28 02:09:31,751 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 362 selfloop transitions, 207 changer transitions 0/576 dead transitions. [2024-06-28 02:09:31,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 576 transitions, 9691 flow [2024-06-28 02:09:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:09:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:09:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-06-28 02:09:31,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846335697399527 [2024-06-28 02:09:31,752 INFO L175 Difference]: Start difference. First operand has 381 places, 523 transitions, 7655 flow. Second operand 9 states and 205 transitions. [2024-06-28 02:09:31,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 576 transitions, 9691 flow [2024-06-28 02:09:33,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 576 transitions, 9371 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-28 02:09:33,698 INFO L231 Difference]: Finished difference. Result has 379 places, 535 transitions, 8049 flow [2024-06-28 02:09:33,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7335, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8049, PETRI_PLACES=379, PETRI_TRANSITIONS=535} [2024-06-28 02:09:33,698 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 328 predicate places. [2024-06-28 02:09:33,699 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 535 transitions, 8049 flow [2024-06-28 02:09:33,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:33,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:33,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:33,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:09:33,699 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:33,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:33,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1269658316, now seen corresponding path program 5 times [2024-06-28 02:09:33,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:33,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125640372] [2024-06-28 02:09:33,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:33,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:37,427 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 02:09:37,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:37,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125640372] [2024-06-28 02:09:37,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125640372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:37,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:37,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:37,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568620526] [2024-06-28 02:09:37,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:37,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:37,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:37,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:37,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:37,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:09:37,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 535 transitions, 8049 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:37,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:37,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:09:37,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:41,436 INFO L124 PetriNetUnfolderBase]: 7738/12222 cut-off events. [2024-06-28 02:09:41,437 INFO L125 PetriNetUnfolderBase]: For 487465/487467 co-relation queries the response was YES. [2024-06-28 02:09:41,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78533 conditions, 12222 events. 7738/12222 cut-off events. For 487465/487467 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 79465 event pairs, 2666 based on Foata normal form. 1/12217 useless extension candidates. Maximal degree in co-relation 78364. Up to 10615 conditions per place. [2024-06-28 02:09:41,645 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 359 selfloop transitions, 212 changer transitions 0/578 dead transitions. [2024-06-28 02:09:41,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 578 transitions, 9951 flow [2024-06-28 02:09:41,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:09:41,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:09:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-28 02:09:41,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2024-06-28 02:09:41,646 INFO L175 Difference]: Start difference. First operand has 379 places, 535 transitions, 8049 flow. Second operand 9 states and 201 transitions. [2024-06-28 02:09:41,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 578 transitions, 9951 flow [2024-06-28 02:09:43,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 578 transitions, 9673 flow, removed 90 selfloop flow, removed 3 redundant places. [2024-06-28 02:09:43,923 INFO L231 Difference]: Finished difference. Result has 385 places, 541 transitions, 8357 flow [2024-06-28 02:09:43,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7827, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8357, PETRI_PLACES=385, PETRI_TRANSITIONS=541} [2024-06-28 02:09:43,924 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 334 predicate places. [2024-06-28 02:09:43,924 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 541 transitions, 8357 flow [2024-06-28 02:09:43,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:43,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:43,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:43,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:09:43,924 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:43,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:43,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1319047346, now seen corresponding path program 1 times [2024-06-28 02:09:43,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:43,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000728632] [2024-06-28 02:09:43,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:43,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:47,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:47,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000728632] [2024-06-28 02:09:47,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000728632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:47,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:47,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:47,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069816301] [2024-06-28 02:09:47,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:47,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:47,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:47,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:47,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:09:47,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 541 transitions, 8357 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:47,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:47,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:09:47,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:50,920 INFO L124 PetriNetUnfolderBase]: 7798/12311 cut-off events. [2024-06-28 02:09:50,920 INFO L125 PetriNetUnfolderBase]: For 516364/516372 co-relation queries the response was YES. [2024-06-28 02:09:51,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80058 conditions, 12311 events. 7798/12311 cut-off events. For 516364/516372 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 80050 event pairs, 2670 based on Foata normal form. 10/12315 useless extension candidates. Maximal degree in co-relation 79887. Up to 10951 conditions per place. [2024-06-28 02:09:51,111 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 448 selfloop transitions, 144 changer transitions 0/599 dead transitions. [2024-06-28 02:09:51,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 599 transitions, 10203 flow [2024-06-28 02:09:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:09:51,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:09:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 250 transitions. [2024-06-28 02:09:51,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4432624113475177 [2024-06-28 02:09:51,112 INFO L175 Difference]: Start difference. First operand has 385 places, 541 transitions, 8357 flow. Second operand 12 states and 250 transitions. [2024-06-28 02:09:51,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 599 transitions, 10203 flow [2024-06-28 02:09:53,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 599 transitions, 9923 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 02:09:53,069 INFO L231 Difference]: Finished difference. Result has 393 places, 550 transitions, 8551 flow [2024-06-28 02:09:53,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8077, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8551, PETRI_PLACES=393, PETRI_TRANSITIONS=550} [2024-06-28 02:09:53,069 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 342 predicate places. [2024-06-28 02:09:53,069 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 550 transitions, 8551 flow [2024-06-28 02:09:53,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:53,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:53,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:53,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 02:09:53,069 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:53,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:53,070 INFO L85 PathProgramCache]: Analyzing trace with hash -73808084, now seen corresponding path program 6 times [2024-06-28 02:09:53,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:53,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164424320] [2024-06-28 02:09:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:53,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:56,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:56,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164424320] [2024-06-28 02:09:56,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164424320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:56,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:56,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:56,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861547385] [2024-06-28 02:09:56,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:56,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:56,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:56,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:56,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:56,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:09:56,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 550 transitions, 8551 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:56,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:56,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:09:56,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:00,419 INFO L124 PetriNetUnfolderBase]: 7795/12312 cut-off events. [2024-06-28 02:10:00,419 INFO L125 PetriNetUnfolderBase]: For 520380/520382 co-relation queries the response was YES. [2024-06-28 02:10:00,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80163 conditions, 12312 events. 7795/12312 cut-off events. For 520380/520382 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 80034 event pairs, 2676 based on Foata normal form. 1/12307 useless extension candidates. Maximal degree in co-relation 79991. Up to 10694 conditions per place. [2024-06-28 02:10:00,590 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 387 selfloop transitions, 198 changer transitions 0/592 dead transitions. [2024-06-28 02:10:00,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 592 transitions, 10521 flow [2024-06-28 02:10:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:10:00,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:10:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-28 02:10:00,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-28 02:10:00,591 INFO L175 Difference]: Start difference. First operand has 393 places, 550 transitions, 8551 flow. Second operand 9 states and 207 transitions. [2024-06-28 02:10:00,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 592 transitions, 10521 flow [2024-06-28 02:10:02,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 592 transitions, 10247 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-28 02:10:02,738 INFO L231 Difference]: Finished difference. Result has 395 places, 550 transitions, 8679 flow [2024-06-28 02:10:02,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8277, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8679, PETRI_PLACES=395, PETRI_TRANSITIONS=550} [2024-06-28 02:10:02,738 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 344 predicate places. [2024-06-28 02:10:02,738 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 550 transitions, 8679 flow [2024-06-28 02:10:02,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:02,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:02,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:02,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 02:10:02,739 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:02,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:02,739 INFO L85 PathProgramCache]: Analyzing trace with hash -73688114, now seen corresponding path program 7 times [2024-06-28 02:10:02,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:02,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525294929] [2024-06-28 02:10:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:06,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:06,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525294929] [2024-06-28 02:10:06,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525294929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:06,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:06,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:06,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186823650] [2024-06-28 02:10:06,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:06,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:06,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:06,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:06,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:06,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:10:06,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 550 transitions, 8679 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:06,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:06,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:10:06,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:10,444 INFO L124 PetriNetUnfolderBase]: 7811/12342 cut-off events. [2024-06-28 02:10:10,444 INFO L125 PetriNetUnfolderBase]: For 530232/530237 co-relation queries the response was YES. [2024-06-28 02:10:10,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80748 conditions, 12342 events. 7811/12342 cut-off events. For 530232/530237 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 80290 event pairs, 2664 based on Foata normal form. 3/12341 useless extension candidates. Maximal degree in co-relation 80574. Up to 11050 conditions per place. [2024-06-28 02:10:10,642 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 436 selfloop transitions, 147 changer transitions 0/590 dead transitions. [2024-06-28 02:10:10,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 590 transitions, 10044 flow [2024-06-28 02:10:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:10:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:10:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-28 02:10:10,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458628841607565 [2024-06-28 02:10:10,643 INFO L175 Difference]: Start difference. First operand has 395 places, 550 transitions, 8679 flow. Second operand 9 states and 194 transitions. [2024-06-28 02:10:10,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 590 transitions, 10044 flow [2024-06-28 02:10:13,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 590 transitions, 9541 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 02:10:13,401 INFO L231 Difference]: Finished difference. Result has 396 places, 556 transitions, 8581 flow [2024-06-28 02:10:13,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8200, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8581, PETRI_PLACES=396, PETRI_TRANSITIONS=556} [2024-06-28 02:10:13,401 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 345 predicate places. [2024-06-28 02:10:13,401 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 556 transitions, 8581 flow [2024-06-28 02:10:13,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:13,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:13,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:13,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 02:10:13,402 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:13,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:13,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1313506220, now seen corresponding path program 4 times [2024-06-28 02:10:13,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:13,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953615391] [2024-06-28 02:10:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:13,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:16,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:16,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953615391] [2024-06-28 02:10:16,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953615391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:16,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:16,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:16,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297569115] [2024-06-28 02:10:16,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:16,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:16,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:16,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:16,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:16,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:10:16,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 556 transitions, 8581 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:16,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:16,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:10:16,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:20,501 INFO L124 PetriNetUnfolderBase]: 7871/12421 cut-off events. [2024-06-28 02:10:20,501 INFO L125 PetriNetUnfolderBase]: For 559092/559097 co-relation queries the response was YES. [2024-06-28 02:10:20,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81650 conditions, 12421 events. 7871/12421 cut-off events. For 559092/559097 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 80705 event pairs, 2637 based on Foata normal form. 4/12421 useless extension candidates. Maximal degree in co-relation 81475. Up to 10716 conditions per place. [2024-06-28 02:10:20,671 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 386 selfloop transitions, 219 changer transitions 0/612 dead transitions. [2024-06-28 02:10:20,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 612 transitions, 10655 flow [2024-06-28 02:10:20,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:10:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:10:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 252 transitions. [2024-06-28 02:10:20,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44680851063829785 [2024-06-28 02:10:20,673 INFO L175 Difference]: Start difference. First operand has 396 places, 556 transitions, 8581 flow. Second operand 12 states and 252 transitions. [2024-06-28 02:10:20,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 612 transitions, 10655 flow [2024-06-28 02:10:23,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 612 transitions, 10234 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 02:10:23,382 INFO L231 Difference]: Finished difference. Result has 401 places, 565 transitions, 8820 flow [2024-06-28 02:10:23,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8160, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8820, PETRI_PLACES=401, PETRI_TRANSITIONS=565} [2024-06-28 02:10:23,382 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 350 predicate places. [2024-06-28 02:10:23,382 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 565 transitions, 8820 flow [2024-06-28 02:10:23,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:23,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:23,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:23,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 02:10:23,383 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:23,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:23,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1322766044, now seen corresponding path program 8 times [2024-06-28 02:10:23,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:23,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439457000] [2024-06-28 02:10:23,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:23,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:26,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:26,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439457000] [2024-06-28 02:10:26,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439457000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:26,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:26,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:26,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903187800] [2024-06-28 02:10:26,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:26,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:26,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:26,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:26,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:26,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:10:26,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 565 transitions, 8820 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:26,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:26,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:10:26,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:30,567 INFO L124 PetriNetUnfolderBase]: 7898/12482 cut-off events. [2024-06-28 02:10:30,567 INFO L125 PetriNetUnfolderBase]: For 569371/569376 co-relation queries the response was YES. [2024-06-28 02:10:30,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82620 conditions, 12482 events. 7898/12482 cut-off events. For 569371/569376 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 81358 event pairs, 2672 based on Foata normal form. 3/12481 useless extension candidates. Maximal degree in co-relation 82444. Up to 11137 conditions per place. [2024-06-28 02:10:30,753 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 437 selfloop transitions, 161 changer transitions 0/605 dead transitions. [2024-06-28 02:10:30,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 605 transitions, 10416 flow [2024-06-28 02:10:30,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:10:30,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:10:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-28 02:10:30,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45390070921985815 [2024-06-28 02:10:30,754 INFO L175 Difference]: Start difference. First operand has 401 places, 565 transitions, 8820 flow. Second operand 9 states and 192 transitions. [2024-06-28 02:10:30,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 605 transitions, 10416 flow [2024-06-28 02:10:33,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 605 transitions, 10098 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-06-28 02:10:33,431 INFO L231 Difference]: Finished difference. Result has 405 places, 574 transitions, 8995 flow [2024-06-28 02:10:33,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8505, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8995, PETRI_PLACES=405, PETRI_TRANSITIONS=574} [2024-06-28 02:10:33,436 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 354 predicate places. [2024-06-28 02:10:33,436 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 574 transitions, 8995 flow [2024-06-28 02:10:33,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:33,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:33,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:33,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 02:10:33,437 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:33,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:33,437 INFO L85 PathProgramCache]: Analyzing trace with hash -64422338, now seen corresponding path program 5 times [2024-06-28 02:10:33,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:33,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488842133] [2024-06-28 02:10:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:33,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:36,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:36,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488842133] [2024-06-28 02:10:36,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488842133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:36,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:36,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:36,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387520074] [2024-06-28 02:10:36,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:36,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:36,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:36,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:36,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:36,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:10:36,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 574 transitions, 8995 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:36,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:36,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:10:36,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:40,915 INFO L124 PetriNetUnfolderBase]: 7936/12522 cut-off events. [2024-06-28 02:10:40,915 INFO L125 PetriNetUnfolderBase]: For 588736/588741 co-relation queries the response was YES. [2024-06-28 02:10:41,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83323 conditions, 12522 events. 7936/12522 cut-off events. For 588736/588741 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 81473 event pairs, 2635 based on Foata normal form. 4/12522 useless extension candidates. Maximal degree in co-relation 83144. Up to 10783 conditions per place. [2024-06-28 02:10:41,103 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 391 selfloop transitions, 223 changer transitions 0/621 dead transitions. [2024-06-28 02:10:41,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 621 transitions, 10951 flow [2024-06-28 02:10:41,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:10:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:10:41,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2024-06-28 02:10:41,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506769825918762 [2024-06-28 02:10:41,104 INFO L175 Difference]: Start difference. First operand has 405 places, 574 transitions, 8995 flow. Second operand 11 states and 233 transitions. [2024-06-28 02:10:41,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 621 transitions, 10951 flow [2024-06-28 02:10:43,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 621 transitions, 10701 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 02:10:44,001 INFO L231 Difference]: Finished difference. Result has 412 places, 580 transitions, 9277 flow [2024-06-28 02:10:44,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8745, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9277, PETRI_PLACES=412, PETRI_TRANSITIONS=580} [2024-06-28 02:10:44,002 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 361 predicate places. [2024-06-28 02:10:44,002 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 580 transitions, 9277 flow [2024-06-28 02:10:44,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:44,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:44,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:44,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 02:10:44,003 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:44,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:44,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1322760464, now seen corresponding path program 9 times [2024-06-28 02:10:44,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:44,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504698995] [2024-06-28 02:10:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:44,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:47,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:47,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504698995] [2024-06-28 02:10:47,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504698995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:47,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:47,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:47,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028288129] [2024-06-28 02:10:47,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:47,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:47,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:47,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:47,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:47,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:10:47,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 580 transitions, 9277 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:47,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:47,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:10:47,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:51,715 INFO L124 PetriNetUnfolderBase]: 7933/12524 cut-off events. [2024-06-28 02:10:51,715 INFO L125 PetriNetUnfolderBase]: For 590849/590854 co-relation queries the response was YES. [2024-06-28 02:10:51,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83647 conditions, 12524 events. 7933/12524 cut-off events. For 590849/590854 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 81562 event pairs, 2670 based on Foata normal form. 3/12523 useless extension candidates. Maximal degree in co-relation 83467. Up to 11186 conditions per place. [2024-06-28 02:10:51,901 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 445 selfloop transitions, 162 changer transitions 0/614 dead transitions. [2024-06-28 02:10:51,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 614 transitions, 10591 flow [2024-06-28 02:10:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:10:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:10:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-28 02:10:51,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43133462282398455 [2024-06-28 02:10:51,902 INFO L175 Difference]: Start difference. First operand has 412 places, 580 transitions, 9277 flow. Second operand 11 states and 223 transitions. [2024-06-28 02:10:51,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 614 transitions, 10591 flow [2024-06-28 02:10:54,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 614 transitions, 10171 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 02:10:54,987 INFO L231 Difference]: Finished difference. Result has 416 places, 580 transitions, 9187 flow [2024-06-28 02:10:54,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8857, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9187, PETRI_PLACES=416, PETRI_TRANSITIONS=580} [2024-06-28 02:10:54,988 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 365 predicate places. [2024-06-28 02:10:54,988 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 580 transitions, 9187 flow [2024-06-28 02:10:54,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:54,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:54,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:10:54,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 02:10:54,988 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:54,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:54,988 INFO L85 PathProgramCache]: Analyzing trace with hash -64433498, now seen corresponding path program 6 times [2024-06-28 02:10:54,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:54,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894487515] [2024-06-28 02:10:54,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:54,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:58,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:58,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894487515] [2024-06-28 02:10:58,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894487515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:58,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:58,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:58,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896979921] [2024-06-28 02:10:58,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:58,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:58,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:58,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:58,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:58,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:10:58,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 580 transitions, 9187 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:58,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:58,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:10:58,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:02,587 INFO L124 PetriNetUnfolderBase]: 7927/12516 cut-off events. [2024-06-28 02:11:02,587 INFO L125 PetriNetUnfolderBase]: For 595218/595223 co-relation queries the response was YES. [2024-06-28 02:11:02,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83189 conditions, 12516 events. 7927/12516 cut-off events. For 595218/595223 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 81569 event pairs, 2633 based on Foata normal form. 4/12516 useless extension candidates. Maximal degree in co-relation 83008. Up to 10774 conditions per place. [2024-06-28 02:11:02,790 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 395 selfloop transitions, 224 changer transitions 0/626 dead transitions. [2024-06-28 02:11:02,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 626 transitions, 11099 flow [2024-06-28 02:11:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:11:02,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:11:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 266 transitions. [2024-06-28 02:11:02,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353518821603928 [2024-06-28 02:11:02,791 INFO L175 Difference]: Start difference. First operand has 416 places, 580 transitions, 9187 flow. Second operand 13 states and 266 transitions. [2024-06-28 02:11:02,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 626 transitions, 11099 flow [2024-06-28 02:11:05,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 626 transitions, 10734 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:11:05,957 INFO L231 Difference]: Finished difference. Result has 419 places, 580 transitions, 9276 flow [2024-06-28 02:11:05,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8822, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9276, PETRI_PLACES=419, PETRI_TRANSITIONS=580} [2024-06-28 02:11:05,957 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 368 predicate places. [2024-06-28 02:11:05,957 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 580 transitions, 9276 flow [2024-06-28 02:11:05,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:05,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:05,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:05,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 02:11:05,958 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:05,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:05,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1322766416, now seen corresponding path program 2 times [2024-06-28 02:11:05,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:05,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023971095] [2024-06-28 02:11:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:05,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:09,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:09,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023971095] [2024-06-28 02:11:09,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023971095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:09,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:09,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:09,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839318766] [2024-06-28 02:11:09,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:09,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:09,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:09,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:09,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:09,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:11:09,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 580 transitions, 9276 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:09,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:09,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:11:09,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:13,659 INFO L124 PetriNetUnfolderBase]: 7965/12581 cut-off events. [2024-06-28 02:11:13,660 INFO L125 PetriNetUnfolderBase]: For 616760/616771 co-relation queries the response was YES. [2024-06-28 02:11:13,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84099 conditions, 12581 events. 7965/12581 cut-off events. For 616760/616771 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 82062 event pairs, 2663 based on Foata normal form. 12/12589 useless extension candidates. Maximal degree in co-relation 83917. Up to 11387 conditions per place. [2024-06-28 02:11:13,833 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 523 selfloop transitions, 101 changer transitions 0/631 dead transitions. [2024-06-28 02:11:13,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 631 transitions, 10912 flow [2024-06-28 02:11:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:11:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:11:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 243 transitions. [2024-06-28 02:11:13,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308510638297872 [2024-06-28 02:11:13,834 INFO L175 Difference]: Start difference. First operand has 419 places, 580 transitions, 9276 flow. Second operand 12 states and 243 transitions. [2024-06-28 02:11:13,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 631 transitions, 10912 flow [2024-06-28 02:11:16,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 631 transitions, 10486 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 02:11:16,925 INFO L231 Difference]: Finished difference. Result has 421 places, 586 transitions, 9128 flow [2024-06-28 02:11:16,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8850, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9128, PETRI_PLACES=421, PETRI_TRANSITIONS=586} [2024-06-28 02:11:16,925 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 370 predicate places. [2024-06-28 02:11:16,926 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 586 transitions, 9128 flow [2024-06-28 02:11:16,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:16,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:16,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:16,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 02:11:16,926 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:16,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:16,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1322771996, now seen corresponding path program 3 times [2024-06-28 02:11:16,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:16,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863195135] [2024-06-28 02:11:16,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:16,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:20,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:20,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863195135] [2024-06-28 02:11:20,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863195135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:20,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:20,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:20,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974225235] [2024-06-28 02:11:20,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:20,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:20,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:20,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:20,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:20,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:11:20,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 586 transitions, 9128 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:20,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:20,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:11:20,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:24,464 INFO L124 PetriNetUnfolderBase]: 7959/12573 cut-off events. [2024-06-28 02:11:24,464 INFO L125 PetriNetUnfolderBase]: For 615928/615939 co-relation queries the response was YES. [2024-06-28 02:11:24,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83515 conditions, 12573 events. 7959/12573 cut-off events. For 615928/615939 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 82090 event pairs, 2663 based on Foata normal form. 12/12581 useless extension candidates. Maximal degree in co-relation 83332. Up to 11382 conditions per place. [2024-06-28 02:11:24,656 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 524 selfloop transitions, 101 changer transitions 0/632 dead transitions. [2024-06-28 02:11:24,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 632 transitions, 10522 flow [2024-06-28 02:11:24,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:11:24,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:11:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 257 transitions. [2024-06-28 02:11:24,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4206219312602291 [2024-06-28 02:11:24,657 INFO L175 Difference]: Start difference. First operand has 421 places, 586 transitions, 9128 flow. Second operand 13 states and 257 transitions. [2024-06-28 02:11:24,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 632 transitions, 10522 flow [2024-06-28 02:11:27,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 632 transitions, 10372 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:11:27,427 INFO L231 Difference]: Finished difference. Result has 426 places, 586 transitions, 9186 flow [2024-06-28 02:11:27,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8978, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9186, PETRI_PLACES=426, PETRI_TRANSITIONS=586} [2024-06-28 02:11:27,428 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 375 predicate places. [2024-06-28 02:11:27,428 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 586 transitions, 9186 flow [2024-06-28 02:11:27,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:27,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:27,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:27,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 02:11:27,428 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:27,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1818122670, now seen corresponding path program 7 times [2024-06-28 02:11:27,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:27,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93902363] [2024-06-28 02:11:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:27,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:30,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:30,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:30,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93902363] [2024-06-28 02:11:30,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93902363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:30,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:30,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:30,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790794709] [2024-06-28 02:11:30,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:30,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:30,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:30,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:30,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:11:30,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 586 transitions, 9186 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:30,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:30,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:11:30,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:34,688 INFO L124 PetriNetUnfolderBase]: 8111/12794 cut-off events. [2024-06-28 02:11:34,696 INFO L125 PetriNetUnfolderBase]: For 674063/674068 co-relation queries the response was YES. [2024-06-28 02:11:34,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86440 conditions, 12794 events. 8111/12794 cut-off events. For 674063/674068 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 83514 event pairs, 2655 based on Foata normal form. 4/12794 useless extension candidates. Maximal degree in co-relation 86255. Up to 10953 conditions per place. [2024-06-28 02:11:34,933 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 415 selfloop transitions, 230 changer transitions 0/652 dead transitions. [2024-06-28 02:11:34,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 652 transitions, 11662 flow [2024-06-28 02:11:34,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:11:34,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:11:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 213 transitions. [2024-06-28 02:11:34,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4531914893617021 [2024-06-28 02:11:34,935 INFO L175 Difference]: Start difference. First operand has 426 places, 586 transitions, 9186 flow. Second operand 10 states and 213 transitions. [2024-06-28 02:11:34,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 652 transitions, 11662 flow [2024-06-28 02:11:38,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 652 transitions, 11456 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-28 02:11:38,292 INFO L231 Difference]: Finished difference. Result has 424 places, 616 transitions, 9966 flow [2024-06-28 02:11:38,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8980, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9966, PETRI_PLACES=424, PETRI_TRANSITIONS=616} [2024-06-28 02:11:38,292 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 373 predicate places. [2024-06-28 02:11:38,292 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 616 transitions, 9966 flow [2024-06-28 02:11:38,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:38,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:38,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:38,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 02:11:38,294 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:38,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:38,294 INFO L85 PathProgramCache]: Analyzing trace with hash 79468192, now seen corresponding path program 8 times [2024-06-28 02:11:38,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:38,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793016799] [2024-06-28 02:11:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:41,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:41,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793016799] [2024-06-28 02:11:41,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793016799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:41,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:41,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:41,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748920142] [2024-06-28 02:11:41,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:41,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:41,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:41,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:41,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:41,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:11:41,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 616 transitions, 9966 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:41,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:41,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:11:41,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:45,997 INFO L124 PetriNetUnfolderBase]: 8127/12819 cut-off events. [2024-06-28 02:11:45,997 INFO L125 PetriNetUnfolderBase]: For 688635/688640 co-relation queries the response was YES. [2024-06-28 02:11:46,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87317 conditions, 12819 events. 8127/12819 cut-off events. For 688635/688640 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 83634 event pairs, 2655 based on Foata normal form. 4/12819 useless extension candidates. Maximal degree in co-relation 87131. Up to 10968 conditions per place. [2024-06-28 02:11:46,186 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 409 selfloop transitions, 245 changer transitions 0/661 dead transitions. [2024-06-28 02:11:46,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 661 transitions, 12204 flow [2024-06-28 02:11:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:11:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:11:46,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 249 transitions. [2024-06-28 02:11:46,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44148936170212766 [2024-06-28 02:11:46,187 INFO L175 Difference]: Start difference. First operand has 424 places, 616 transitions, 9966 flow. Second operand 12 states and 249 transitions. [2024-06-28 02:11:46,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 661 transitions, 12204 flow [2024-06-28 02:11:49,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 661 transitions, 11975 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 02:11:49,423 INFO L231 Difference]: Finished difference. Result has 433 places, 619 transitions, 10285 flow [2024-06-28 02:11:49,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9740, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10285, PETRI_PLACES=433, PETRI_TRANSITIONS=619} [2024-06-28 02:11:49,423 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 382 predicate places. [2024-06-28 02:11:49,424 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 619 transitions, 10285 flow [2024-06-28 02:11:49,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:49,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:49,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:49,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 02:11:49,424 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:49,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:49,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1139034486, now seen corresponding path program 9 times [2024-06-28 02:11:49,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:49,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258484211] [2024-06-28 02:11:49,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:49,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:52,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:52,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258484211] [2024-06-28 02:11:52,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258484211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:52,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:52,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:52,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618377713] [2024-06-28 02:11:52,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:52,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:52,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:52,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:52,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:52,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:11:52,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 619 transitions, 10285 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:52,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:52,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:11:52,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:56,687 INFO L124 PetriNetUnfolderBase]: 8191/12919 cut-off events. [2024-06-28 02:11:56,687 INFO L125 PetriNetUnfolderBase]: For 715075/715077 co-relation queries the response was YES. [2024-06-28 02:11:56,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88583 conditions, 12919 events. 8191/12919 cut-off events. For 715075/715077 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 84560 event pairs, 2635 based on Foata normal form. 4/12920 useless extension candidates. Maximal degree in co-relation 88396. Up to 11690 conditions per place. [2024-06-28 02:11:56,887 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 552 selfloop transitions, 105 changer transitions 0/664 dead transitions. [2024-06-28 02:11:56,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 664 transitions, 12004 flow [2024-06-28 02:11:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:11:56,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:11:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 02:11:56,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340425531914894 [2024-06-28 02:11:56,888 INFO L175 Difference]: Start difference. First operand has 433 places, 619 transitions, 10285 flow. Second operand 10 states and 204 transitions. [2024-06-28 02:11:56,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 664 transitions, 12004 flow [2024-06-28 02:12:00,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 664 transitions, 11494 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 02:12:00,425 INFO L231 Difference]: Finished difference. Result has 435 places, 631 transitions, 10316 flow [2024-06-28 02:12:00,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9799, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10316, PETRI_PLACES=435, PETRI_TRANSITIONS=631} [2024-06-28 02:12:00,425 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 384 predicate places. [2024-06-28 02:12:00,425 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 631 transitions, 10316 flow [2024-06-28 02:12:00,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:00,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:00,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:00,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 02:12:00,426 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:00,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:00,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1131676326, now seen corresponding path program 10 times [2024-06-28 02:12:00,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:00,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185653641] [2024-06-28 02:12:00,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:00,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:04,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:04,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185653641] [2024-06-28 02:12:04,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185653641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:04,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:04,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:12:04,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018239509] [2024-06-28 02:12:04,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:04,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:12:04,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:04,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:12:04,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:12:04,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:12:04,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 631 transitions, 10316 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:04,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:04,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:12:04,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15