./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix010.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix010.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 18:28:41,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 18:28:41,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 18:28:41,494 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 18:28:41,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 18:28:41,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 18:28:41,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 18:28:41,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 18:28:41,519 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 18:28:41,525 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 18:28:41,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 18:28:41,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 18:28:41,526 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 18:28:41,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 18:28:41,528 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 18:28:41,528 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 18:28:41,529 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 18:28:41,529 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 18:28:41,529 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 18:28:41,529 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 18:28:41,530 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 18:28:41,530 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 18:28:41,530 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 18:28:41,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 18:28:41,531 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 18:28:41,531 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 18:28:41,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 18:28:41,532 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 18:28:41,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 18:28:41,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 18:28:41,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 18:28:41,534 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 18:28:41,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:28:41,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 18:28:41,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 18:28:41,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 18:28:41,535 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 18:28:41,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 18:28:41,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 18:28:41,535 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 18:28:41,535 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 18:28:41,536 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 18:28:41,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 18:28:41,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 18:28:41,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 18:28:41,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 18:28:41,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 18:28:41,821 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 18:28:41,822 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 18:28:41,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix010.oepc.yml/witness.yml [2024-06-21 18:28:41,956 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 18:28:41,956 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 18:28:41,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2024-06-21 18:28:43,086 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 18:28:43,356 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 18:28:43,357 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2024-06-21 18:28:43,376 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71fb53b63/ce18c3123aac4bfdb0a26ee480afa97b/FLAGf72c6623b [2024-06-21 18:28:43,388 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71fb53b63/ce18c3123aac4bfdb0a26ee480afa97b [2024-06-21 18:28:43,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 18:28:43,390 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 18:28:43,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 18:28:43,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 18:28:43,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 18:28:43,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:28:41" (1/2) ... [2024-06-21 18:28:43,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b737c31 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:43, skipping insertion in model container [2024-06-21 18:28:43,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:28:41" (1/2) ... [2024-06-21 18:28:43,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f8bb81c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:28:43, skipping insertion in model container [2024-06-21 18:28:43,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:28:43" (2/2) ... [2024-06-21 18:28:43,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b737c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:43, skipping insertion in model container [2024-06-21 18:28:43,398 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:28:43" (2/2) ... [2024-06-21 18:28:43,398 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 18:28:43,437 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 18:28:43,439 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-21 18:28:43,439 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-21 18:28:43,442 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd3) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd3 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd3 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-21 18:28:43,442 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 18:28:43,443 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-21 18:28:43,495 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 18:28:43,824 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:28:43,834 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 18:28:44,091 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:28:44,141 INFO L206 MainTranslator]: Completed translation [2024-06-21 18:28:44,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44 WrapperNode [2024-06-21 18:28:44,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 18:28:44,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 18:28:44,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 18:28:44,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 18:28:44,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44" (1/1) ... [2024-06-21 18:28:44,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44" (1/1) ... [2024-06-21 18:28:44,243 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 129 [2024-06-21 18:28:44,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 18:28:44,245 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 18:28:44,245 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 18:28:44,245 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 18:28:44,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44" (1/1) ... [2024-06-21 18:28:44,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44" (1/1) ... [2024-06-21 18:28:44,267 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44" (1/1) ... [2024-06-21 18:28:44,312 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-21 18:28:44,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44" (1/1) ... [2024-06-21 18:28:44,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44" (1/1) ... [2024-06-21 18:28:44,336 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44" (1/1) ... [2024-06-21 18:28:44,338 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44" (1/1) ... [2024-06-21 18:28:44,347 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44" (1/1) ... [2024-06-21 18:28:44,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44" (1/1) ... [2024-06-21 18:28:44,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 18:28:44,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 18:28:44,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 18:28:44,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 18:28:44,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44" (1/1) ... [2024-06-21 18:28:44,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:28:44,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:28:44,394 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) [2024-06-21 18:28:44,396 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 [2024-06-21 18:28:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 18:28:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 18:28:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 18:28:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 18:28:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 18:28:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 18:28:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 18:28:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 18:28:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 18:28:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 18:28:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 18:28:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 18:28:44,427 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 18:28:44,554 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 18:28:44,556 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 18:28:45,256 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 18:28:45,257 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 18:28:45,498 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 18:28:45,498 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 18:28:45,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:28:45 BoogieIcfgContainer [2024-06-21 18:28:45,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 18:28:45,502 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 18:28:45,502 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 18:28:45,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 18:28:45,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:28:41" (1/4) ... [2024-06-21 18:28:45,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387f81b4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:28:45, skipping insertion in model container [2024-06-21 18:28:45,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 06:28:43" (2/4) ... [2024-06-21 18:28:45,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387f81b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:28:45, skipping insertion in model container [2024-06-21 18:28:45,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:28:44" (3/4) ... [2024-06-21 18:28:45,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387f81b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:28:45, skipping insertion in model container [2024-06-21 18:28:45,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:28:45" (4/4) ... [2024-06-21 18:28:45,512 INFO L112 eAbstractionObserver]: Analyzing ICFG mix010.oepc.i [2024-06-21 18:28:45,528 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 18:28:45,528 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-21 18:28:45,528 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 18:28:45,605 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 18:28:45,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 43 transitions, 98 flow [2024-06-21 18:28:45,689 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-06-21 18:28:45,690 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:28:45,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 18:28:45,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 43 transitions, 98 flow [2024-06-21 18:28:45,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-06-21 18:28:45,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 18:28:45,719 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;@137895c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 18:28:45,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-21 18:28:45,725 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 18:28:45,726 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-21 18:28:45,726 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:28:45,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:45,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 18:28:45,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:28:45,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:45,733 INFO L85 PathProgramCache]: Analyzing trace with hash 382731927, now seen corresponding path program 1 times [2024-06-21 18:28:45,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:45,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888523537] [2024-06-21 18:28:45,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:45,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:47,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:47,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888523537] [2024-06-21 18:28:47,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888523537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:47,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:47,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 18:28:47,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117768944] [2024-06-21 18:28:47,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:47,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 18:28:47,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:47,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 18:28:47,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 18:28:48,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-21 18:28:48,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 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) [2024-06-21 18:28:48,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:48,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-21 18:28:48,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:48,678 INFO L124 PetriNetUnfolderBase]: 1359/2139 cut-off events. [2024-06-21 18:28:48,678 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-21 18:28:48,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4253 conditions, 2139 events. 1359/2139 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10850 event pairs, 941 based on Foata normal form. 1/2097 useless extension candidates. Maximal degree in co-relation 4241. Up to 2029 conditions per place. [2024-06-21 18:28:48,701 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 32 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-21 18:28:48,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 175 flow [2024-06-21 18:28:48,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 18:28:48,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 18:28:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-21 18:28:48,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-06-21 18:28:48,715 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 81 transitions. [2024-06-21 18:28:48,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 175 flow [2024-06-21 18:28:48,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 18:28:48,722 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 104 flow [2024-06-21 18:28:48,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-21 18:28:48,727 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2024-06-21 18:28:48,727 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 104 flow [2024-06-21 18:28:48,727 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) [2024-06-21 18:28:48,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:48,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:48,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 18:28:48,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:28:48,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:48,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1561535066, now seen corresponding path program 1 times [2024-06-21 18:28:48,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:48,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576613768] [2024-06-21 18:28:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:48,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:50,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:50,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576613768] [2024-06-21 18:28:50,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576613768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:50,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:50,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:28:50,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96434523] [2024-06-21 18:28:50,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:50,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:28:50,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:50,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:28:50,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:28:50,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-21 18:28:50,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 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) [2024-06-21 18:28:50,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:50,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-21 18:28:50,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:51,063 INFO L124 PetriNetUnfolderBase]: 1353/2136 cut-off events. [2024-06-21 18:28:51,064 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2024-06-21 18:28:51,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4792 conditions, 2136 events. 1353/2136 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10853 event pairs, 795 based on Foata normal form. 3/2132 useless extension candidates. Maximal degree in co-relation 4780. Up to 2005 conditions per place. [2024-06-21 18:28:51,078 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 39 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-21 18:28:51,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 242 flow [2024-06-21 18:28:51,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:28:51,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:28:51,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-06-21 18:28:51,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-06-21 18:28:51,081 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 104 flow. Second operand 4 states and 105 transitions. [2024-06-21 18:28:51,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 242 flow [2024-06-21 18:28:51,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 18:28:51,085 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 140 flow [2024-06-21 18:28:51,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-21 18:28:51,086 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2024-06-21 18:28:51,086 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 140 flow [2024-06-21 18:28:51,086 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) [2024-06-21 18:28:51,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:51,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:51,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 18:28:51,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:28:51,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:51,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1691570235, now seen corresponding path program 1 times [2024-06-21 18:28:51,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:51,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188119469] [2024-06-21 18:28:51,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:51,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:54,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:54,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188119469] [2024-06-21 18:28:54,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188119469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:54,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:54,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:28:54,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132593041] [2024-06-21 18:28:54,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:54,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:28:54,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:54,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:28:54,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:28:54,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-21 18:28:54,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 140 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) [2024-06-21 18:28:54,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:54,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-21 18:28:54,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:55,247 INFO L124 PetriNetUnfolderBase]: 1641/2562 cut-off events. [2024-06-21 18:28:55,247 INFO L125 PetriNetUnfolderBase]: For 1353/1353 co-relation queries the response was YES. [2024-06-21 18:28:55,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6345 conditions, 2562 events. 1641/2562 cut-off events. For 1353/1353 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12927 event pairs, 746 based on Foata normal form. 3/2555 useless extension candidates. Maximal degree in co-relation 6331. Up to 2393 conditions per place. [2024-06-21 18:28:55,267 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 54 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-21 18:28:55,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 376 flow [2024-06-21 18:28:55,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:28:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:28:55,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-21 18:28:55,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2024-06-21 18:28:55,274 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 140 flow. Second operand 6 states and 148 transitions. [2024-06-21 18:28:55,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 376 flow [2024-06-21 18:28:55,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 356 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-21 18:28:55,278 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 198 flow [2024-06-21 18:28:55,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-21 18:28:55,280 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2024-06-21 18:28:55,280 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 198 flow [2024-06-21 18:28:55,280 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) [2024-06-21 18:28:55,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:55,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:55,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 18:28:55,282 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:28:55,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:55,282 INFO L85 PathProgramCache]: Analyzing trace with hash 819869989, now seen corresponding path program 1 times [2024-06-21 18:28:55,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:55,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553375684] [2024-06-21 18:28:55,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:55,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:28:58,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:58,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553375684] [2024-06-21 18:28:58,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553375684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:58,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:58,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:58,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370821919] [2024-06-21 18:28:58,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:58,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:58,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:58,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-21 18:28:58,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 198 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) [2024-06-21 18:28:58,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:58,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-21 18:28:58,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:59,645 INFO L124 PetriNetUnfolderBase]: 1632/2543 cut-off events. [2024-06-21 18:28:59,646 INFO L125 PetriNetUnfolderBase]: For 2668/2668 co-relation queries the response was YES. [2024-06-21 18:28:59,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7020 conditions, 2543 events. 1632/2543 cut-off events. For 2668/2668 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12833 event pairs, 582 based on Foata normal form. 6/2537 useless extension candidates. Maximal degree in co-relation 7004. Up to 2348 conditions per place. [2024-06-21 18:28:59,668 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 58 selfloop transitions, 15 changer transitions 0/80 dead transitions. [2024-06-21 18:28:59,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 80 transitions, 436 flow [2024-06-21 18:28:59,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-21 18:28:59,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5548172757475083 [2024-06-21 18:28:59,671 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 198 flow. Second operand 7 states and 167 transitions. [2024-06-21 18:28:59,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 80 transitions, 436 flow [2024-06-21 18:28:59,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 80 transitions, 408 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-21 18:28:59,677 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 219 flow [2024-06-21 18:28:59,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=219, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-21 18:28:59,679 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2024-06-21 18:28:59,679 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 219 flow [2024-06-21 18:28:59,680 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) [2024-06-21 18:28:59,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:59,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:59,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 18:28:59,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:28:59,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:59,681 INFO L85 PathProgramCache]: Analyzing trace with hash 40153126, now seen corresponding path program 1 times [2024-06-21 18:28:59,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:59,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995024376] [2024-06-21 18:28:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:59,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:02,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:02,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995024376] [2024-06-21 18:29:02,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995024376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:02,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:02,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:29:02,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502092891] [2024-06-21 18:29:02,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:02,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:29:02,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:29:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:29:02,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:29:02,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:02,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:02,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:29:02,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:02,891 INFO L124 PetriNetUnfolderBase]: 1627/2523 cut-off events. [2024-06-21 18:29:02,892 INFO L125 PetriNetUnfolderBase]: For 4271/4271 co-relation queries the response was YES. [2024-06-21 18:29:02,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7431 conditions, 2523 events. 1627/2523 cut-off events. For 4271/4271 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12714 event pairs, 963 based on Foata normal form. 2/2499 useless extension candidates. Maximal degree in co-relation 7413. Up to 2407 conditions per place. [2024-06-21 18:29:02,911 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 46 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2024-06-21 18:29:02,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 384 flow [2024-06-21 18:29:02,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:29:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:29:02,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-06-21 18:29:02,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744186046511628 [2024-06-21 18:29:02,914 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 219 flow. Second operand 5 states and 102 transitions. [2024-06-21 18:29:02,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 384 flow [2024-06-21 18:29:02,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 343 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:02,920 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 244 flow [2024-06-21 18:29:02,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-06-21 18:29:02,923 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2024-06-21 18:29:02,923 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 244 flow [2024-06-21 18:29:02,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:02,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:02,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:02,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 18:29:02,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:02,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:02,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1244748280, now seen corresponding path program 1 times [2024-06-21 18:29:02,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:02,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253067346] [2024-06-21 18:29:02,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:02,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:05,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:05,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253067346] [2024-06-21 18:29:05,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253067346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:05,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:05,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:29:05,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600013846] [2024-06-21 18:29:05,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:05,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:29:05,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:05,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:29:05,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:29:05,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:29:05,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:05,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:05,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:29:05,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:06,787 INFO L124 PetriNetUnfolderBase]: 1918/2955 cut-off events. [2024-06-21 18:29:06,788 INFO L125 PetriNetUnfolderBase]: For 6509/6509 co-relation queries the response was YES. [2024-06-21 18:29:06,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9198 conditions, 2955 events. 1918/2955 cut-off events. For 6509/6509 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14695 event pairs, 1144 based on Foata normal form. 2/2943 useless extension candidates. Maximal degree in co-relation 9177. Up to 2819 conditions per place. [2024-06-21 18:29:06,823 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 51 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-06-21 18:29:06,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 69 transitions, 428 flow [2024-06-21 18:29:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:29:06,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:29:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-21 18:29:06,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44573643410852715 [2024-06-21 18:29:06,825 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 244 flow. Second operand 6 states and 115 transitions. [2024-06-21 18:29:06,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 69 transitions, 428 flow [2024-06-21 18:29:06,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 406 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-21 18:29:06,830 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 284 flow [2024-06-21 18:29:06,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-06-21 18:29:06,833 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2024-06-21 18:29:06,833 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 284 flow [2024-06-21 18:29:06,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:06,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:06,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:06,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 18:29:06,834 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:06,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:06,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1553798887, now seen corresponding path program 1 times [2024-06-21 18:29:06,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:06,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610057039] [2024-06-21 18:29:06,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:06,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:09,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:09,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610057039] [2024-06-21 18:29:09,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610057039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:09,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:09,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:29:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095570555] [2024-06-21 18:29:09,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:09,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:29:09,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:09,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:29:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:29:09,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:29:09,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:09,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:09,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:29:09,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:10,179 INFO L124 PetriNetUnfolderBase]: 1871/2915 cut-off events. [2024-06-21 18:29:10,180 INFO L125 PetriNetUnfolderBase]: For 9565/9569 co-relation queries the response was YES. [2024-06-21 18:29:10,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9819 conditions, 2915 events. 1871/2915 cut-off events. For 9565/9569 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14911 event pairs, 986 based on Foata normal form. 6/2873 useless extension candidates. Maximal degree in co-relation 9795. Up to 2687 conditions per place. [2024-06-21 18:29:10,194 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 62 selfloop transitions, 23 changer transitions 0/92 dead transitions. [2024-06-21 18:29:10,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 637 flow [2024-06-21 18:29:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:29:10,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:29:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-21 18:29:10,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271317829457365 [2024-06-21 18:29:10,196 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 284 flow. Second operand 6 states and 136 transitions. [2024-06-21 18:29:10,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 637 flow [2024-06-21 18:29:10,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 92 transitions, 605 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-21 18:29:10,201 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 423 flow [2024-06-21 18:29:10,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=423, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2024-06-21 18:29:10,202 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-06-21 18:29:10,202 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 423 flow [2024-06-21 18:29:10,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:10,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:10,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:10,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 18:29:10,203 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:10,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:10,203 INFO L85 PathProgramCache]: Analyzing trace with hash 123683205, now seen corresponding path program 2 times [2024-06-21 18:29:10,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:10,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212853476] [2024-06-21 18:29:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:10,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:12,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:12,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212853476] [2024-06-21 18:29:12,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212853476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:12,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:12,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:29:12,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985649111] [2024-06-21 18:29:12,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:12,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:29:12,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:12,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:29:12,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:29:12,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:29:12,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 423 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:12,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:12,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:29:12,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:13,292 INFO L124 PetriNetUnfolderBase]: 1905/2975 cut-off events. [2024-06-21 18:29:13,292 INFO L125 PetriNetUnfolderBase]: For 12770/12774 co-relation queries the response was YES. [2024-06-21 18:29:13,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10933 conditions, 2975 events. 1905/2975 cut-off events. For 12770/12774 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15217 event pairs, 1063 based on Foata normal form. 7/2927 useless extension candidates. Maximal degree in co-relation 10907. Up to 2746 conditions per place. [2024-06-21 18:29:13,314 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 61 selfloop transitions, 30 changer transitions 0/98 dead transitions. [2024-06-21 18:29:13,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 98 transitions, 807 flow [2024-06-21 18:29:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:29:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:29:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-21 18:29:13,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4844961240310077 [2024-06-21 18:29:13,320 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 423 flow. Second operand 6 states and 125 transitions. [2024-06-21 18:29:13,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 98 transitions, 807 flow [2024-06-21 18:29:13,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 98 transitions, 764 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-21 18:29:13,330 INFO L231 Difference]: Finished difference. Result has 70 places, 82 transitions, 609 flow [2024-06-21 18:29:13,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=609, PETRI_PLACES=70, PETRI_TRANSITIONS=82} [2024-06-21 18:29:13,332 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-06-21 18:29:13,332 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 82 transitions, 609 flow [2024-06-21 18:29:13,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:13,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:13,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:13,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 18:29:13,333 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:13,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:13,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1191750055, now seen corresponding path program 3 times [2024-06-21 18:29:13,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:13,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844837087] [2024-06-21 18:29:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:13,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:15,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:15,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844837087] [2024-06-21 18:29:15,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844837087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:15,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:15,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:29:15,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200885616] [2024-06-21 18:29:15,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:15,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:29:15,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:15,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:29:15,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:29:15,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:29:15,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 82 transitions, 609 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:15,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:15,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:29:15,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:16,000 INFO L124 PetriNetUnfolderBase]: 1897/2963 cut-off events. [2024-06-21 18:29:16,000 INFO L125 PetriNetUnfolderBase]: For 14719/14719 co-relation queries the response was YES. [2024-06-21 18:29:16,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11169 conditions, 2963 events. 1897/2963 cut-off events. For 14719/14719 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15107 event pairs, 1061 based on Foata normal form. 3/2911 useless extension candidates. Maximal degree in co-relation 11139. Up to 2767 conditions per place. [2024-06-21 18:29:16,017 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 73 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-21 18:29:16,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 831 flow [2024-06-21 18:29:16,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:29:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:29:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-21 18:29:16,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-21 18:29:16,019 INFO L175 Difference]: Start difference. First operand has 70 places, 82 transitions, 609 flow. Second operand 6 states and 120 transitions. [2024-06-21 18:29:16,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 831 flow [2024-06-21 18:29:16,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 740 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-21 18:29:16,035 INFO L231 Difference]: Finished difference. Result has 73 places, 82 transitions, 561 flow [2024-06-21 18:29:16,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=73, PETRI_TRANSITIONS=82} [2024-06-21 18:29:16,036 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2024-06-21 18:29:16,036 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 82 transitions, 561 flow [2024-06-21 18:29:16,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:16,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:16,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:16,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 18:29:16,037 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:16,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash -67507579, now seen corresponding path program 1 times [2024-06-21 18:29:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:16,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140334368] [2024-06-21 18:29:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:16,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:18,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:18,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140334368] [2024-06-21 18:29:18,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140334368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:18,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:18,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467432207] [2024-06-21 18:29:18,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:18,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:18,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:18,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:18,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:19,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:29:19,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 82 transitions, 561 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-21 18:29:19,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:19,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:29:19,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:20,024 INFO L124 PetriNetUnfolderBase]: 1970/3033 cut-off events. [2024-06-21 18:29:20,024 INFO L125 PetriNetUnfolderBase]: For 15784/15784 co-relation queries the response was YES. [2024-06-21 18:29:20,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11454 conditions, 3033 events. 1970/3033 cut-off events. For 15784/15784 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15034 event pairs, 1104 based on Foata normal form. 2/3023 useless extension candidates. Maximal degree in co-relation 11423. Up to 2886 conditions per place. [2024-06-21 18:29:20,043 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 82 selfloop transitions, 16 changer transitions 0/103 dead transitions. [2024-06-21 18:29:20,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 837 flow [2024-06-21 18:29:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:29:20,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:29:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-21 18:29:20,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43853820598006643 [2024-06-21 18:29:20,046 INFO L175 Difference]: Start difference. First operand has 73 places, 82 transitions, 561 flow. Second operand 7 states and 132 transitions. [2024-06-21 18:29:20,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 837 flow [2024-06-21 18:29:20,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 103 transitions, 792 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:20,060 INFO L231 Difference]: Finished difference. Result has 75 places, 85 transitions, 590 flow [2024-06-21 18:29:20,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=75, PETRI_TRANSITIONS=85} [2024-06-21 18:29:20,061 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2024-06-21 18:29:20,061 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 85 transitions, 590 flow [2024-06-21 18:29:20,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-21 18:29:20,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:20,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:20,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 18:29:20,062 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:20,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:20,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1597934695, now seen corresponding path program 1 times [2024-06-21 18:29:20,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:20,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120327154] [2024-06-21 18:29:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:20,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:22,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:22,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120327154] [2024-06-21 18:29:22,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120327154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:22,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:22,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:22,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475607389] [2024-06-21 18:29:22,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:22,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:22,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:22,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:22,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:22,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:29:22,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 85 transitions, 590 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) [2024-06-21 18:29:22,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:22,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:29:22,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:23,232 INFO L124 PetriNetUnfolderBase]: 1925/3002 cut-off events. [2024-06-21 18:29:23,232 INFO L125 PetriNetUnfolderBase]: For 20460/20465 co-relation queries the response was YES. [2024-06-21 18:29:23,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12184 conditions, 3002 events. 1925/3002 cut-off events. For 20460/20465 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15391 event pairs, 928 based on Foata normal form. 4/2958 useless extension candidates. Maximal degree in co-relation 12152. Up to 2750 conditions per place. [2024-06-21 18:29:23,257 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 94 selfloop transitions, 34 changer transitions 0/135 dead transitions. [2024-06-21 18:29:23,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 1122 flow [2024-06-21 18:29:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:29:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:29:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-21 18:29:23,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627906976744186 [2024-06-21 18:29:23,258 INFO L175 Difference]: Start difference. First operand has 75 places, 85 transitions, 590 flow. Second operand 10 states and 199 transitions. [2024-06-21 18:29:23,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 1122 flow [2024-06-21 18:29:23,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 135 transitions, 1080 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:23,277 INFO L231 Difference]: Finished difference. Result has 82 places, 100 transitions, 762 flow [2024-06-21 18:29:23,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=762, PETRI_PLACES=82, PETRI_TRANSITIONS=100} [2024-06-21 18:29:23,278 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2024-06-21 18:29:23,278 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 100 transitions, 762 flow [2024-06-21 18:29:23,279 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) [2024-06-21 18:29:23,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:23,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:23,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 18:29:23,279 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:23,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:23,280 INFO L85 PathProgramCache]: Analyzing trace with hash -963865493, now seen corresponding path program 2 times [2024-06-21 18:29:23,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:23,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315664640] [2024-06-21 18:29:23,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:23,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:25,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:25,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315664640] [2024-06-21 18:29:25,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315664640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:25,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:25,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:25,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247780597] [2024-06-21 18:29:25,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:25,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:25,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:25,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:25,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:25,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:29:25,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 100 transitions, 762 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) [2024-06-21 18:29:25,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:25,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:29:25,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:26,729 INFO L124 PetriNetUnfolderBase]: 1961/3076 cut-off events. [2024-06-21 18:29:26,729 INFO L125 PetriNetUnfolderBase]: For 24661/24664 co-relation queries the response was YES. [2024-06-21 18:29:26,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13298 conditions, 3076 events. 1961/3076 cut-off events. For 24661/24664 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15804 event pairs, 874 based on Foata normal form. 5/3048 useless extension candidates. Maximal degree in co-relation 13263. Up to 2806 conditions per place. [2024-06-21 18:29:26,748 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 95 selfloop transitions, 39 changer transitions 0/141 dead transitions. [2024-06-21 18:29:26,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 141 transitions, 1279 flow [2024-06-21 18:29:26,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:29:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:29:26,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-21 18:29:26,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2024-06-21 18:29:26,752 INFO L175 Difference]: Start difference. First operand has 82 places, 100 transitions, 762 flow. Second operand 8 states and 162 transitions. [2024-06-21 18:29:26,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 141 transitions, 1279 flow [2024-06-21 18:29:26,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 141 transitions, 1172 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-21 18:29:26,779 INFO L231 Difference]: Finished difference. Result has 87 places, 117 transitions, 949 flow [2024-06-21 18:29:26,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=949, PETRI_PLACES=87, PETRI_TRANSITIONS=117} [2024-06-21 18:29:26,780 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 43 predicate places. [2024-06-21 18:29:26,780 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 117 transitions, 949 flow [2024-06-21 18:29:26,780 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) [2024-06-21 18:29:26,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:26,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:26,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 18:29:26,781 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:26,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:26,781 INFO L85 PathProgramCache]: Analyzing trace with hash -924421217, now seen corresponding path program 1 times [2024-06-21 18:29:26,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:26,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170549929] [2024-06-21 18:29:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:26,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:29,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:29,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170549929] [2024-06-21 18:29:29,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170549929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:29,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:29,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:29,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139768854] [2024-06-21 18:29:29,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:29,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:29,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:29,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:29,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:29,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:29:29,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 117 transitions, 949 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-21 18:29:29,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:29,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:29:29,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:30,058 INFO L124 PetriNetUnfolderBase]: 2084/3201 cut-off events. [2024-06-21 18:29:30,058 INFO L125 PetriNetUnfolderBase]: For 27875/27882 co-relation queries the response was YES. [2024-06-21 18:29:30,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14066 conditions, 3201 events. 2084/3201 cut-off events. For 27875/27882 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15962 event pairs, 1005 based on Foata normal form. 8/3208 useless extension candidates. Maximal degree in co-relation 14028. Up to 2960 conditions per place. [2024-06-21 18:29:30,082 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 103 selfloop transitions, 46 changer transitions 0/154 dead transitions. [2024-06-21 18:29:30,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 154 transitions, 1505 flow [2024-06-21 18:29:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:29:30,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:29:30,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-21 18:29:30,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2024-06-21 18:29:30,084 INFO L175 Difference]: Start difference. First operand has 87 places, 117 transitions, 949 flow. Second operand 8 states and 161 transitions. [2024-06-21 18:29:30,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 154 transitions, 1505 flow [2024-06-21 18:29:30,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 154 transitions, 1432 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-21 18:29:30,133 INFO L231 Difference]: Finished difference. Result has 93 places, 127 transitions, 1095 flow [2024-06-21 18:29:30,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1095, PETRI_PLACES=93, PETRI_TRANSITIONS=127} [2024-06-21 18:29:30,134 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 49 predicate places. [2024-06-21 18:29:30,134 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 127 transitions, 1095 flow [2024-06-21 18:29:30,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-21 18:29:30,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:30,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:30,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 18:29:30,135 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:30,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:30,135 INFO L85 PathProgramCache]: Analyzing trace with hash -924421403, now seen corresponding path program 3 times [2024-06-21 18:29:30,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:30,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487512198] [2024-06-21 18:29:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:30,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:32,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:32,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487512198] [2024-06-21 18:29:32,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487512198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:32,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:32,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:32,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017023447] [2024-06-21 18:29:32,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:32,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:32,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:32,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:32,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:32,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:29:32,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 127 transitions, 1095 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) [2024-06-21 18:29:32,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:32,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:29:32,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:33,474 INFO L124 PetriNetUnfolderBase]: 2006/3143 cut-off events. [2024-06-21 18:29:33,474 INFO L125 PetriNetUnfolderBase]: For 32995/32997 co-relation queries the response was YES. [2024-06-21 18:29:33,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14665 conditions, 3143 events. 2006/3143 cut-off events. For 32995/32997 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 16093 event pairs, 869 based on Foata normal form. 4/3132 useless extension candidates. Maximal degree in co-relation 14625. Up to 2752 conditions per place. [2024-06-21 18:29:33,494 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 83 selfloop transitions, 72 changer transitions 0/165 dead transitions. [2024-06-21 18:29:33,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 165 transitions, 1708 flow [2024-06-21 18:29:33,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:29:33,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:29:33,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-21 18:29:33,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-21 18:29:33,497 INFO L175 Difference]: Start difference. First operand has 93 places, 127 transitions, 1095 flow. Second operand 8 states and 168 transitions. [2024-06-21 18:29:33,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 165 transitions, 1708 flow [2024-06-21 18:29:33,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 165 transitions, 1648 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-21 18:29:33,541 INFO L231 Difference]: Finished difference. Result has 98 places, 138 transitions, 1344 flow [2024-06-21 18:29:33,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1344, PETRI_PLACES=98, PETRI_TRANSITIONS=138} [2024-06-21 18:29:33,543 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 54 predicate places. [2024-06-21 18:29:33,543 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 138 transitions, 1344 flow [2024-06-21 18:29:33,543 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) [2024-06-21 18:29:33,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:33,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:33,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 18:29:33,544 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:33,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:33,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2024736029, now seen corresponding path program 4 times [2024-06-21 18:29:33,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:33,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888877440] [2024-06-21 18:29:33,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:33,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:35,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:35,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888877440] [2024-06-21 18:29:35,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888877440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:35,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:35,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:35,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119799525] [2024-06-21 18:29:35,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:35,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:35,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:35,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:35,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:29:35,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 138 transitions, 1344 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) [2024-06-21 18:29:35,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:35,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:29:35,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:36,309 INFO L124 PetriNetUnfolderBase]: 2036/3171 cut-off events. [2024-06-21 18:29:36,309 INFO L125 PetriNetUnfolderBase]: For 40516/40517 co-relation queries the response was YES. [2024-06-21 18:29:36,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15801 conditions, 3171 events. 2036/3171 cut-off events. For 40516/40517 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16237 event pairs, 1000 based on Foata normal form. 3/3139 useless extension candidates. Maximal degree in co-relation 15759. Up to 2924 conditions per place. [2024-06-21 18:29:36,329 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 124 selfloop transitions, 34 changer transitions 0/168 dead transitions. [2024-06-21 18:29:36,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 168 transitions, 1844 flow [2024-06-21 18:29:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:29:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:29:36,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-21 18:29:36,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-21 18:29:36,331 INFO L175 Difference]: Start difference. First operand has 98 places, 138 transitions, 1344 flow. Second operand 7 states and 140 transitions. [2024-06-21 18:29:36,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 168 transitions, 1844 flow [2024-06-21 18:29:36,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 168 transitions, 1738 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-21 18:29:36,373 INFO L231 Difference]: Finished difference. Result has 103 places, 151 transitions, 1488 flow [2024-06-21 18:29:36,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1488, PETRI_PLACES=103, PETRI_TRANSITIONS=151} [2024-06-21 18:29:36,374 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 59 predicate places. [2024-06-21 18:29:36,374 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 151 transitions, 1488 flow [2024-06-21 18:29:36,374 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) [2024-06-21 18:29:36,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:36,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:36,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 18:29:36,375 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:36,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:36,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2024855999, now seen corresponding path program 5 times [2024-06-21 18:29:36,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:36,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023362687] [2024-06-21 18:29:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:36,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:38,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:38,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023362687] [2024-06-21 18:29:38,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023362687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:38,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:38,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:38,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308199521] [2024-06-21 18:29:38,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:38,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:38,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:38,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:38,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:38,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:29:38,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 151 transitions, 1488 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) [2024-06-21 18:29:38,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:38,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:29:38,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:39,218 INFO L124 PetriNetUnfolderBase]: 2061/3208 cut-off events. [2024-06-21 18:29:39,218 INFO L125 PetriNetUnfolderBase]: For 44833/44836 co-relation queries the response was YES. [2024-06-21 18:29:39,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16411 conditions, 3208 events. 2061/3208 cut-off events. For 44833/44836 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16437 event pairs, 1006 based on Foata normal form. 5/3178 useless extension candidates. Maximal degree in co-relation 16366. Up to 2888 conditions per place. [2024-06-21 18:29:39,238 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 108 selfloop transitions, 62 changer transitions 0/180 dead transitions. [2024-06-21 18:29:39,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 180 transitions, 2074 flow [2024-06-21 18:29:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:29:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:29:39,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-21 18:29:39,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-21 18:29:39,241 INFO L175 Difference]: Start difference. First operand has 103 places, 151 transitions, 1488 flow. Second operand 8 states and 156 transitions. [2024-06-21 18:29:39,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 180 transitions, 2074 flow [2024-06-21 18:29:39,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 180 transitions, 2025 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 18:29:39,269 INFO L231 Difference]: Finished difference. Result has 107 places, 160 transitions, 1687 flow [2024-06-21 18:29:39,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1687, PETRI_PLACES=107, PETRI_TRANSITIONS=160} [2024-06-21 18:29:39,270 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 63 predicate places. [2024-06-21 18:29:39,270 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 160 transitions, 1687 flow [2024-06-21 18:29:39,270 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) [2024-06-21 18:29:39,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:39,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:39,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 18:29:39,271 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:39,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:39,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2024856185, now seen corresponding path program 2 times [2024-06-21 18:29:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:39,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626811453] [2024-06-21 18:29:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:39,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:41,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:41,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626811453] [2024-06-21 18:29:41,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626811453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:41,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:41,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:41,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393436876] [2024-06-21 18:29:41,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:41,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:41,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:41,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:41,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:29:41,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 160 transitions, 1687 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-21 18:29:41,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:41,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:29:41,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:42,119 INFO L124 PetriNetUnfolderBase]: 2175/3348 cut-off events. [2024-06-21 18:29:42,119 INFO L125 PetriNetUnfolderBase]: For 47871/47875 co-relation queries the response was YES. [2024-06-21 18:29:42,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17199 conditions, 3348 events. 2175/3348 cut-off events. For 47871/47875 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16813 event pairs, 1079 based on Foata normal form. 7/3346 useless extension candidates. Maximal degree in co-relation 17153. Up to 3110 conditions per place. [2024-06-21 18:29:42,140 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 139 selfloop transitions, 45 changer transitions 0/189 dead transitions. [2024-06-21 18:29:42,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 189 transitions, 2283 flow [2024-06-21 18:29:42,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:29:42,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:29:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-21 18:29:42,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-21 18:29:42,143 INFO L175 Difference]: Start difference. First operand has 107 places, 160 transitions, 1687 flow. Second operand 7 states and 139 transitions. [2024-06-21 18:29:42,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 189 transitions, 2283 flow [2024-06-21 18:29:42,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 189 transitions, 2136 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:42,193 INFO L231 Difference]: Finished difference. Result has 109 places, 169 transitions, 1738 flow [2024-06-21 18:29:42,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1738, PETRI_PLACES=109, PETRI_TRANSITIONS=169} [2024-06-21 18:29:42,193 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2024-06-21 18:29:42,193 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 169 transitions, 1738 flow [2024-06-21 18:29:42,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-21 18:29:42,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:42,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:42,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 18:29:42,194 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:42,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:42,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1710452585, now seen corresponding path program 3 times [2024-06-21 18:29:42,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:42,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969168592] [2024-06-21 18:29:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:42,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:43,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:43,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969168592] [2024-06-21 18:29:43,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969168592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:43,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:43,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:43,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90145163] [2024-06-21 18:29:43,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:43,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:43,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:43,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:43,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:43,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:29:43,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 169 transitions, 1738 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-21 18:29:43,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:43,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:29:43,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:44,642 INFO L124 PetriNetUnfolderBase]: 2193/3371 cut-off events. [2024-06-21 18:29:44,642 INFO L125 PetriNetUnfolderBase]: For 52437/52437 co-relation queries the response was YES. [2024-06-21 18:29:44,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17569 conditions, 3371 events. 2193/3371 cut-off events. For 52437/52437 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16834 event pairs, 1079 based on Foata normal form. 3/3365 useless extension candidates. Maximal degree in co-relation 17522. Up to 3178 conditions per place. [2024-06-21 18:29:44,664 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 161 selfloop transitions, 30 changer transitions 0/196 dead transitions. [2024-06-21 18:29:44,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 196 transitions, 2364 flow [2024-06-21 18:29:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:29:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:29:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-21 18:29:44,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-21 18:29:44,665 INFO L175 Difference]: Start difference. First operand has 109 places, 169 transitions, 1738 flow. Second operand 7 states and 136 transitions. [2024-06-21 18:29:44,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 196 transitions, 2364 flow [2024-06-21 18:29:44,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 196 transitions, 2255 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-21 18:29:44,721 INFO L231 Difference]: Finished difference. Result has 112 places, 175 transitions, 1784 flow [2024-06-21 18:29:44,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1784, PETRI_PLACES=112, PETRI_TRANSITIONS=175} [2024-06-21 18:29:44,722 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 68 predicate places. [2024-06-21 18:29:44,722 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 175 transitions, 1784 flow [2024-06-21 18:29:44,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-21 18:29:44,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:44,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:44,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 18:29:44,722 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:44,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:44,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2092742441, now seen corresponding path program 4 times [2024-06-21 18:29:44,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:44,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512194081] [2024-06-21 18:29:44,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:44,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:46,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:46,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512194081] [2024-06-21 18:29:46,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512194081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:46,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:46,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:46,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135671819] [2024-06-21 18:29:46,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:46,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:46,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:46,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:46,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:46,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:29:46,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 175 transitions, 1784 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-21 18:29:46,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:46,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:29:46,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:46,996 INFO L124 PetriNetUnfolderBase]: 2185/3360 cut-off events. [2024-06-21 18:29:46,997 INFO L125 PetriNetUnfolderBase]: For 56616/56616 co-relation queries the response was YES. [2024-06-21 18:29:47,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17656 conditions, 3360 events. 2185/3360 cut-off events. For 56616/56616 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16765 event pairs, 1079 based on Foata normal form. 3/3354 useless extension candidates. Maximal degree in co-relation 17608. Up to 3195 conditions per place. [2024-06-21 18:29:47,019 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 169 selfloop transitions, 19 changer transitions 0/193 dead transitions. [2024-06-21 18:29:47,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 193 transitions, 2241 flow [2024-06-21 18:29:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:29:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:29:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-21 18:29:47,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43853820598006643 [2024-06-21 18:29:47,021 INFO L175 Difference]: Start difference. First operand has 112 places, 175 transitions, 1784 flow. Second operand 7 states and 132 transitions. [2024-06-21 18:29:47,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 193 transitions, 2241 flow [2024-06-21 18:29:47,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 193 transitions, 2098 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:47,084 INFO L231 Difference]: Finished difference. Result has 114 places, 175 transitions, 1690 flow [2024-06-21 18:29:47,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1690, PETRI_PLACES=114, PETRI_TRANSITIONS=175} [2024-06-21 18:29:47,085 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 70 predicate places. [2024-06-21 18:29:47,085 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 175 transitions, 1690 flow [2024-06-21 18:29:47,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-21 18:29:47,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:47,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:47,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 18:29:47,085 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:47,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:47,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1076685883, now seen corresponding path program 6 times [2024-06-21 18:29:47,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:47,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846628541] [2024-06-21 18:29:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:47,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:48,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:48,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:48,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846628541] [2024-06-21 18:29:48,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846628541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:48,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:48,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:48,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464601369] [2024-06-21 18:29:48,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:48,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:48,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:48,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:48,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:48,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:29:48,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 175 transitions, 1690 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) [2024-06-21 18:29:48,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:48,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:29:48,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:49,411 INFO L124 PetriNetUnfolderBase]: 2084/3245 cut-off events. [2024-06-21 18:29:49,411 INFO L125 PetriNetUnfolderBase]: For 63309/63314 co-relation queries the response was YES. [2024-06-21 18:29:49,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17549 conditions, 3245 events. 2084/3245 cut-off events. For 63309/63314 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16617 event pairs, 1012 based on Foata normal form. 3/3213 useless extension candidates. Maximal degree in co-relation 17500. Up to 3002 conditions per place. [2024-06-21 18:29:49,432 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 156 selfloop transitions, 22 changer transitions 0/193 dead transitions. [2024-06-21 18:29:49,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 193 transitions, 2134 flow [2024-06-21 18:29:49,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:29:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:29:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-21 18:29:49,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584717607973422 [2024-06-21 18:29:49,437 INFO L175 Difference]: Start difference. First operand has 114 places, 175 transitions, 1690 flow. Second operand 7 states and 138 transitions. [2024-06-21 18:29:49,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 193 transitions, 2134 flow [2024-06-21 18:29:49,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 193 transitions, 2035 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-21 18:29:49,484 INFO L231 Difference]: Finished difference. Result has 115 places, 175 transitions, 1647 flow [2024-06-21 18:29:49,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1647, PETRI_PLACES=115, PETRI_TRANSITIONS=175} [2024-06-21 18:29:49,485 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 71 predicate places. [2024-06-21 18:29:49,485 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 175 transitions, 1647 flow [2024-06-21 18:29:49,485 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) [2024-06-21 18:29:49,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:49,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:49,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 18:29:49,486 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:49,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:49,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1358766179, now seen corresponding path program 1 times [2024-06-21 18:29:49,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:49,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043569027] [2024-06-21 18:29:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:49,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043569027] [2024-06-21 18:29:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043569027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:51,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:51,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:29:51,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322075430] [2024-06-21 18:29:51,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:51,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:29:51,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:29:51,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:29:51,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:29:51,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 175 transitions, 1647 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:51,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:51,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:29:51,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:52,164 INFO L124 PetriNetUnfolderBase]: 2520/3860 cut-off events. [2024-06-21 18:29:52,164 INFO L125 PetriNetUnfolderBase]: For 86606/86630 co-relation queries the response was YES. [2024-06-21 18:29:52,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20825 conditions, 3860 events. 2520/3860 cut-off events. For 86606/86630 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 19657 event pairs, 1409 based on Foata normal form. 9/3838 useless extension candidates. Maximal degree in co-relation 20775. Up to 3672 conditions per place. [2024-06-21 18:29:52,183 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 143 selfloop transitions, 10 changer transitions 0/185 dead transitions. [2024-06-21 18:29:52,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 185 transitions, 2003 flow [2024-06-21 18:29:52,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:29:52,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:29:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-21 18:29:52,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4372093023255814 [2024-06-21 18:29:52,185 INFO L175 Difference]: Start difference. First operand has 115 places, 175 transitions, 1647 flow. Second operand 5 states and 94 transitions. [2024-06-21 18:29:52,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 185 transitions, 2003 flow [2024-06-21 18:29:52,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 185 transitions, 1864 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 18:29:52,234 INFO L231 Difference]: Finished difference. Result has 113 places, 178 transitions, 1562 flow [2024-06-21 18:29:52,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1562, PETRI_PLACES=113, PETRI_TRANSITIONS=178} [2024-06-21 18:29:52,235 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 69 predicate places. [2024-06-21 18:29:52,235 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 178 transitions, 1562 flow [2024-06-21 18:29:52,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:52,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:52,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:52,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 18:29:52,236 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:52,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:52,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1994616230, now seen corresponding path program 1 times [2024-06-21 18:29:52,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:52,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643925836] [2024-06-21 18:29:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:52,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:54,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:54,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643925836] [2024-06-21 18:29:54,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643925836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:54,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:54,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:54,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050409304] [2024-06-21 18:29:54,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:54,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:54,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:54,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:54,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:29:54,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 178 transitions, 1562 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:54,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:54,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:29:54,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:55,190 INFO L124 PetriNetUnfolderBase]: 2298/3534 cut-off events. [2024-06-21 18:29:55,190 INFO L125 PetriNetUnfolderBase]: For 89106/89146 co-relation queries the response was YES. [2024-06-21 18:29:55,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20179 conditions, 3534 events. 2298/3534 cut-off events. For 89106/89146 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 18154 event pairs, 950 based on Foata normal form. 8/3478 useless extension candidates. Maximal degree in co-relation 20129. Up to 3099 conditions per place. [2024-06-21 18:29:55,211 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 136 selfloop transitions, 75 changer transitions 0/227 dead transitions. [2024-06-21 18:29:55,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 227 transitions, 2386 flow [2024-06-21 18:29:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:29:55,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:29:55,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-21 18:29:55,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744186046511628 [2024-06-21 18:29:55,213 INFO L175 Difference]: Start difference. First operand has 113 places, 178 transitions, 1562 flow. Second operand 10 states and 204 transitions. [2024-06-21 18:29:55,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 227 transitions, 2386 flow [2024-06-21 18:29:55,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 227 transitions, 2354 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 18:29:55,277 INFO L231 Difference]: Finished difference. Result has 122 places, 193 transitions, 1902 flow [2024-06-21 18:29:55,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1902, PETRI_PLACES=122, PETRI_TRANSITIONS=193} [2024-06-21 18:29:55,277 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 78 predicate places. [2024-06-21 18:29:55,277 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 193 transitions, 1902 flow [2024-06-21 18:29:55,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:55,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:55,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:55,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 18:29:55,278 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:55,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2083731212, now seen corresponding path program 2 times [2024-06-21 18:29:55,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:55,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039358253] [2024-06-21 18:29:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:55,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:58,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:58,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039358253] [2024-06-21 18:29:58,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039358253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:58,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:58,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:29:58,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186102821] [2024-06-21 18:29:58,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:58,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:29:58,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:58,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:29:58,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:29:58,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:29:58,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 193 transitions, 1902 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) [2024-06-21 18:29:58,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:58,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:29:58,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:59,608 INFO L124 PetriNetUnfolderBase]: 2336/3612 cut-off events. [2024-06-21 18:29:59,608 INFO L125 PetriNetUnfolderBase]: For 98495/98527 co-relation queries the response was YES. [2024-06-21 18:29:59,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21664 conditions, 3612 events. 2336/3612 cut-off events. For 98495/98527 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18684 event pairs, 952 based on Foata normal form. 9/3572 useless extension candidates. Maximal degree in co-relation 21611. Up to 3192 conditions per place. [2024-06-21 18:29:59,633 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 154 selfloop transitions, 85 changer transitions 0/255 dead transitions. [2024-06-21 18:29:59,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 255 transitions, 2923 flow [2024-06-21 18:29:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:29:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:29:59,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-21 18:29:59,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-21 18:29:59,636 INFO L175 Difference]: Start difference. First operand has 122 places, 193 transitions, 1902 flow. Second operand 11 states and 220 transitions. [2024-06-21 18:29:59,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 255 transitions, 2923 flow [2024-06-21 18:29:59,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 255 transitions, 2766 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-21 18:29:59,722 INFO L231 Difference]: Finished difference. Result has 130 places, 214 transitions, 2256 flow [2024-06-21 18:29:59,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2256, PETRI_PLACES=130, PETRI_TRANSITIONS=214} [2024-06-21 18:29:59,722 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 86 predicate places. [2024-06-21 18:29:59,722 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 214 transitions, 2256 flow [2024-06-21 18:29:59,723 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) [2024-06-21 18:29:59,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:59,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:59,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 18:29:59,723 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:29:59,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:59,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2085075217, now seen corresponding path program 1 times [2024-06-21 18:29:59,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:59,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131230145] [2024-06-21 18:29:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:59,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:01,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:01,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131230145] [2024-06-21 18:30:01,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131230145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:01,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:01,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:01,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619452806] [2024-06-21 18:30:01,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:01,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:01,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:01,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:01,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:30:01,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 214 transitions, 2256 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:01,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:01,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:30:01,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:03,023 INFO L124 PetriNetUnfolderBase]: 2467/3765 cut-off events. [2024-06-21 18:30:03,023 INFO L125 PetriNetUnfolderBase]: For 98519/98542 co-relation queries the response was YES. [2024-06-21 18:30:03,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22484 conditions, 3765 events. 2467/3765 cut-off events. For 98519/98542 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 19055 event pairs, 996 based on Foata normal form. 4/3738 useless extension candidates. Maximal degree in co-relation 22429. Up to 3440 conditions per place. [2024-06-21 18:30:03,051 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 187 selfloop transitions, 69 changer transitions 0/262 dead transitions. [2024-06-21 18:30:03,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 262 transitions, 3192 flow [2024-06-21 18:30:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:30:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:30:03,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-21 18:30:03,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-21 18:30:03,053 INFO L175 Difference]: Start difference. First operand has 130 places, 214 transitions, 2256 flow. Second operand 11 states and 209 transitions. [2024-06-21 18:30:03,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 262 transitions, 3192 flow [2024-06-21 18:30:03,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 262 transitions, 3054 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-21 18:30:03,150 INFO L231 Difference]: Finished difference. Result has 135 places, 224 transitions, 2413 flow [2024-06-21 18:30:03,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2413, PETRI_PLACES=135, PETRI_TRANSITIONS=224} [2024-06-21 18:30:03,150 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 91 predicate places. [2024-06-21 18:30:03,151 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 224 transitions, 2413 flow [2024-06-21 18:30:03,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:03,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:03,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:03,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 18:30:03,151 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:03,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:03,151 INFO L85 PathProgramCache]: Analyzing trace with hash 2085070412, now seen corresponding path program 3 times [2024-06-21 18:30:03,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:03,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990897953] [2024-06-21 18:30:03,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:03,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:06,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:06,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990897953] [2024-06-21 18:30:06,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990897953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:06,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:06,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:06,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690348824] [2024-06-21 18:30:06,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:06,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:06,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:06,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:06,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:06,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:30:06,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 224 transitions, 2413 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) [2024-06-21 18:30:06,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:06,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:30:06,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:07,551 INFO L124 PetriNetUnfolderBase]: 2367/3670 cut-off events. [2024-06-21 18:30:07,551 INFO L125 PetriNetUnfolderBase]: For 109491/109526 co-relation queries the response was YES. [2024-06-21 18:30:07,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22996 conditions, 3670 events. 2367/3670 cut-off events. For 109491/109526 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 19137 event pairs, 937 based on Foata normal form. 5/3632 useless extension candidates. Maximal degree in co-relation 22938. Up to 3270 conditions per place. [2024-06-21 18:30:07,574 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 174 selfloop transitions, 69 changer transitions 0/262 dead transitions. [2024-06-21 18:30:07,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 262 transitions, 3106 flow [2024-06-21 18:30:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:07,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-21 18:30:07,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720930232558139 [2024-06-21 18:30:07,576 INFO L175 Difference]: Start difference. First operand has 135 places, 224 transitions, 2413 flow. Second operand 10 states and 203 transitions. [2024-06-21 18:30:07,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 262 transitions, 3106 flow [2024-06-21 18:30:07,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 262 transitions, 2996 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-21 18:30:07,673 INFO L231 Difference]: Finished difference. Result has 139 places, 227 transitions, 2502 flow [2024-06-21 18:30:07,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2303, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2502, PETRI_PLACES=139, PETRI_TRANSITIONS=227} [2024-06-21 18:30:07,674 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 95 predicate places. [2024-06-21 18:30:07,674 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 227 transitions, 2502 flow [2024-06-21 18:30:07,674 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) [2024-06-21 18:30:07,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:07,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:07,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 18:30:07,675 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:07,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:07,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1407560928, now seen corresponding path program 4 times [2024-06-21 18:30:07,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:07,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900166573] [2024-06-21 18:30:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:07,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:10,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:10,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900166573] [2024-06-21 18:30:10,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900166573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:10,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:10,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:10,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277286282] [2024-06-21 18:30:10,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:10,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:10,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:10,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:10,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:11,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-21 18:30:11,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 227 transitions, 2502 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) [2024-06-21 18:30:11,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:11,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-21 18:30:11,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:12,055 INFO L124 PetriNetUnfolderBase]: 2425/3732 cut-off events. [2024-06-21 18:30:12,055 INFO L125 PetriNetUnfolderBase]: For 123996/124041 co-relation queries the response was YES. [2024-06-21 18:30:12,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24079 conditions, 3732 events. 2425/3732 cut-off events. For 123996/124041 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 19300 event pairs, 935 based on Foata normal form. 13/3687 useless extension candidates. Maximal degree in co-relation 24020. Up to 3233 conditions per place. [2024-06-21 18:30:12,088 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 146 selfloop transitions, 103 changer transitions 0/268 dead transitions. [2024-06-21 18:30:12,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 268 transitions, 3370 flow [2024-06-21 18:30:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:30:12,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:30:12,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-21 18:30:12,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5290697674418605 [2024-06-21 18:30:12,090 INFO L175 Difference]: Start difference. First operand has 139 places, 227 transitions, 2502 flow. Second operand 8 states and 182 transitions. [2024-06-21 18:30:12,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 268 transitions, 3370 flow [2024-06-21 18:30:12,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 268 transitions, 3205 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 18:30:12,190 INFO L231 Difference]: Finished difference. Result has 139 places, 233 transitions, 2652 flow [2024-06-21 18:30:12,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2652, PETRI_PLACES=139, PETRI_TRANSITIONS=233} [2024-06-21 18:30:12,191 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 95 predicate places. [2024-06-21 18:30:12,191 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 233 transitions, 2652 flow [2024-06-21 18:30:12,191 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) [2024-06-21 18:30:12,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:12,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:12,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 18:30:12,192 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:12,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:12,192 INFO L85 PathProgramCache]: Analyzing trace with hash 184942008, now seen corresponding path program 5 times [2024-06-21 18:30:12,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:12,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590699148] [2024-06-21 18:30:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:12,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:15,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:15,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590699148] [2024-06-21 18:30:15,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590699148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:15,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:15,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:15,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410256871] [2024-06-21 18:30:15,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:15,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:15,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:15,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:15,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:15,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:30:15,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 233 transitions, 2652 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:15,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:15,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:30:15,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:17,106 INFO L124 PetriNetUnfolderBase]: 2374/3681 cut-off events. [2024-06-21 18:30:17,107 INFO L125 PetriNetUnfolderBase]: For 127058/127082 co-relation queries the response was YES. [2024-06-21 18:30:17,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23966 conditions, 3681 events. 2374/3681 cut-off events. For 127058/127082 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 19116 event pairs, 937 based on Foata normal form. 6/3644 useless extension candidates. Maximal degree in co-relation 23906. Up to 3254 conditions per place. [2024-06-21 18:30:17,135 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 166 selfloop transitions, 74 changer transitions 0/259 dead transitions. [2024-06-21 18:30:17,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 259 transitions, 3271 flow [2024-06-21 18:30:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:30:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:30:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-21 18:30:17,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2024-06-21 18:30:17,137 INFO L175 Difference]: Start difference. First operand has 139 places, 233 transitions, 2652 flow. Second operand 8 states and 161 transitions. [2024-06-21 18:30:17,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 259 transitions, 3271 flow [2024-06-21 18:30:17,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 259 transitions, 3015 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-21 18:30:17,256 INFO L231 Difference]: Finished difference. Result has 142 places, 233 transitions, 2571 flow [2024-06-21 18:30:17,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2396, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2571, PETRI_PLACES=142, PETRI_TRANSITIONS=233} [2024-06-21 18:30:17,257 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 98 predicate places. [2024-06-21 18:30:17,257 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 233 transitions, 2571 flow [2024-06-21 18:30:17,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:17,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:17,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:17,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 18:30:17,257 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:17,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:17,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1438241162, now seen corresponding path program 1 times [2024-06-21 18:30:17,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:17,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620832674] [2024-06-21 18:30:17,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:17,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:20,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:20,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620832674] [2024-06-21 18:30:20,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620832674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:20,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:20,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:20,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344789643] [2024-06-21 18:30:20,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:20,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:20,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:20,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:20,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:20,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:30:20,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 233 transitions, 2571 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:20,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:20,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:30:20,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:21,553 INFO L124 PetriNetUnfolderBase]: 2511/3846 cut-off events. [2024-06-21 18:30:21,553 INFO L125 PetriNetUnfolderBase]: For 120788/120814 co-relation queries the response was YES. [2024-06-21 18:30:21,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24451 conditions, 3846 events. 2511/3846 cut-off events. For 120788/120814 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19511 event pairs, 949 based on Foata normal form. 12/3837 useless extension candidates. Maximal degree in co-relation 24389. Up to 3529 conditions per place. [2024-06-21 18:30:21,583 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 211 selfloop transitions, 61 changer transitions 0/278 dead transitions. [2024-06-21 18:30:21,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 278 transitions, 3486 flow [2024-06-21 18:30:21,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:30:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:30:21,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-21 18:30:21,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441860465116279 [2024-06-21 18:30:21,585 INFO L175 Difference]: Start difference. First operand has 142 places, 233 transitions, 2571 flow. Second operand 10 states and 191 transitions. [2024-06-21 18:30:21,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 278 transitions, 3486 flow [2024-06-21 18:30:21,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 278 transitions, 3311 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 18:30:21,693 INFO L231 Difference]: Finished difference. Result has 146 places, 245 transitions, 2697 flow [2024-06-21 18:30:21,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2697, PETRI_PLACES=146, PETRI_TRANSITIONS=245} [2024-06-21 18:30:21,693 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 102 predicate places. [2024-06-21 18:30:21,693 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 245 transitions, 2697 flow [2024-06-21 18:30:21,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:21,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:21,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:21,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 18:30:21,694 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:21,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:21,695 INFO L85 PathProgramCache]: Analyzing trace with hash 103543107, now seen corresponding path program 2 times [2024-06-21 18:30:21,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:21,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297371974] [2024-06-21 18:30:21,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:21,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:24,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:24,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297371974] [2024-06-21 18:30:24,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297371974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:24,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:24,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:24,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453344795] [2024-06-21 18:30:24,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:24,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:24,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:24,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:24,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:24,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:30:24,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 245 transitions, 2697 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:24,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:24,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:30:24,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:25,305 INFO L124 PetriNetUnfolderBase]: 2500/3828 cut-off events. [2024-06-21 18:30:25,305 INFO L125 PetriNetUnfolderBase]: For 120667/120693 co-relation queries the response was YES. [2024-06-21 18:30:25,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24645 conditions, 3828 events. 2500/3828 cut-off events. For 120667/120693 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19392 event pairs, 949 based on Foata normal form. 13/3820 useless extension candidates. Maximal degree in co-relation 24581. Up to 3534 conditions per place. [2024-06-21 18:30:25,332 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 208 selfloop transitions, 58 changer transitions 0/272 dead transitions. [2024-06-21 18:30:25,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 272 transitions, 3344 flow [2024-06-21 18:30:25,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:30:25,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:30:25,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-21 18:30:25,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 18:30:25,334 INFO L175 Difference]: Start difference. First operand has 146 places, 245 transitions, 2697 flow. Second operand 9 states and 172 transitions. [2024-06-21 18:30:25,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 272 transitions, 3344 flow [2024-06-21 18:30:25,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 272 transitions, 3161 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-21 18:30:25,486 INFO L231 Difference]: Finished difference. Result has 148 places, 245 transitions, 2647 flow [2024-06-21 18:30:25,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2647, PETRI_PLACES=148, PETRI_TRANSITIONS=245} [2024-06-21 18:30:25,487 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 104 predicate places. [2024-06-21 18:30:25,487 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 245 transitions, 2647 flow [2024-06-21 18:30:25,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:25,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:25,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:25,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 18:30:25,488 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:25,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:25,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1326309897, now seen corresponding path program 3 times [2024-06-21 18:30:25,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:25,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034141318] [2024-06-21 18:30:25,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:25,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:27,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034141318] [2024-06-21 18:30:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034141318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:27,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:27,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:27,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48571606] [2024-06-21 18:30:27,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:27,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:28,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:30:28,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 245 transitions, 2647 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:28,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:28,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:30:28,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:29,324 INFO L124 PetriNetUnfolderBase]: 2551/3901 cut-off events. [2024-06-21 18:30:29,324 INFO L125 PetriNetUnfolderBase]: For 133429/133464 co-relation queries the response was YES. [2024-06-21 18:30:29,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25506 conditions, 3901 events. 2551/3901 cut-off events. For 133429/133464 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 19862 event pairs, 963 based on Foata normal form. 16/3890 useless extension candidates. Maximal degree in co-relation 25441. Up to 3328 conditions per place. [2024-06-21 18:30:29,350 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 157 selfloop transitions, 129 changer transitions 0/292 dead transitions. [2024-06-21 18:30:29,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 292 transitions, 3852 flow [2024-06-21 18:30:29,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:30:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:30:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-21 18:30:29,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-21 18:30:29,352 INFO L175 Difference]: Start difference. First operand has 148 places, 245 transitions, 2647 flow. Second operand 9 states and 185 transitions. [2024-06-21 18:30:29,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 292 transitions, 3852 flow [2024-06-21 18:30:29,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 292 transitions, 3736 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-21 18:30:29,486 INFO L231 Difference]: Finished difference. Result has 150 places, 259 transitions, 3059 flow [2024-06-21 18:30:29,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3059, PETRI_PLACES=150, PETRI_TRANSITIONS=259} [2024-06-21 18:30:29,486 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 106 predicate places. [2024-06-21 18:30:29,486 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 259 transitions, 3059 flow [2024-06-21 18:30:29,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:29,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:29,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:29,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 18:30:29,487 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:29,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1407708798, now seen corresponding path program 6 times [2024-06-21 18:30:29,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:29,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742086633] [2024-06-21 18:30:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:29,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:32,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:32,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:32,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742086633] [2024-06-21 18:30:32,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742086633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:32,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:32,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:32,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488467742] [2024-06-21 18:30:32,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:32,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:32,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:32,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:32,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:32,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:30:32,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 259 transitions, 3059 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) [2024-06-21 18:30:32,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:32,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:30:32,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:33,878 INFO L124 PetriNetUnfolderBase]: 2435/3786 cut-off events. [2024-06-21 18:30:33,879 INFO L125 PetriNetUnfolderBase]: For 143883/143911 co-relation queries the response was YES. [2024-06-21 18:30:33,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25959 conditions, 3786 events. 2435/3786 cut-off events. For 143883/143911 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 19718 event pairs, 899 based on Foata normal form. 14/3769 useless extension candidates. Maximal degree in co-relation 25892. Up to 3252 conditions per place. [2024-06-21 18:30:33,907 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 169 selfloop transitions, 93 changer transitions 0/288 dead transitions. [2024-06-21 18:30:33,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 288 transitions, 3813 flow [2024-06-21 18:30:33,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:30:33,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:30:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-21 18:30:33,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016611295681063 [2024-06-21 18:30:33,909 INFO L175 Difference]: Start difference. First operand has 150 places, 259 transitions, 3059 flow. Second operand 7 states and 151 transitions. [2024-06-21 18:30:33,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 288 transitions, 3813 flow [2024-06-21 18:30:34,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 288 transitions, 3675 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-21 18:30:34,097 INFO L231 Difference]: Finished difference. Result has 154 places, 262 transitions, 3180 flow [2024-06-21 18:30:34,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2933, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3180, PETRI_PLACES=154, PETRI_TRANSITIONS=262} [2024-06-21 18:30:34,098 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 110 predicate places. [2024-06-21 18:30:34,098 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 262 transitions, 3180 flow [2024-06-21 18:30:34,098 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) [2024-06-21 18:30:34,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:34,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:34,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 18:30:34,098 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:34,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:34,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1407714533, now seen corresponding path program 4 times [2024-06-21 18:30:34,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:34,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377987388] [2024-06-21 18:30:34,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:34,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:36,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:36,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377987388] [2024-06-21 18:30:36,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377987388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:36,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:36,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:36,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337175128] [2024-06-21 18:30:36,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:36,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:36,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:36,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:36,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:36,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:30:36,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 262 transitions, 3180 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:36,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:36,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:30:36,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:37,889 INFO L124 PetriNetUnfolderBase]: 2557/3910 cut-off events. [2024-06-21 18:30:37,889 INFO L125 PetriNetUnfolderBase]: For 153266/153307 co-relation queries the response was YES. [2024-06-21 18:30:37,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27063 conditions, 3910 events. 2557/3910 cut-off events. For 153266/153307 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 19904 event pairs, 963 based on Foata normal form. 16/3899 useless extension candidates. Maximal degree in co-relation 26995. Up to 3339 conditions per place. [2024-06-21 18:30:37,923 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 152 selfloop transitions, 135 changer transitions 0/293 dead transitions. [2024-06-21 18:30:37,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 293 transitions, 4080 flow [2024-06-21 18:30:37,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:30:37,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:30:37,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-21 18:30:37,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702842377260982 [2024-06-21 18:30:37,925 INFO L175 Difference]: Start difference. First operand has 154 places, 262 transitions, 3180 flow. Second operand 9 states and 182 transitions. [2024-06-21 18:30:37,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 293 transitions, 4080 flow [2024-06-21 18:30:38,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 293 transitions, 3841 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-21 18:30:38,123 INFO L231 Difference]: Finished difference. Result has 158 places, 262 transitions, 3220 flow [2024-06-21 18:30:38,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3220, PETRI_PLACES=158, PETRI_TRANSITIONS=262} [2024-06-21 18:30:38,124 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 114 predicate places. [2024-06-21 18:30:38,124 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 262 transitions, 3220 flow [2024-06-21 18:30:38,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:38,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:38,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:38,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 18:30:38,124 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:38,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash 188667030, now seen corresponding path program 1 times [2024-06-21 18:30:38,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:38,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578790328] [2024-06-21 18:30:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:38,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:40,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:40,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578790328] [2024-06-21 18:30:40,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578790328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:40,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:40,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:40,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81800204] [2024-06-21 18:30:40,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:40,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:40,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:40,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:40,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:40,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:30:40,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 262 transitions, 3220 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:40,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:40,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:30:40,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:42,037 INFO L124 PetriNetUnfolderBase]: 2567/3932 cut-off events. [2024-06-21 18:30:42,037 INFO L125 PetriNetUnfolderBase]: For 162351/162381 co-relation queries the response was YES. [2024-06-21 18:30:42,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27542 conditions, 3932 events. 2567/3932 cut-off events. For 162351/162381 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 20089 event pairs, 1020 based on Foata normal form. 5/3911 useless extension candidates. Maximal degree in co-relation 27472. Up to 3548 conditions per place. [2024-06-21 18:30:42,064 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 230 selfloop transitions, 67 changer transitions 0/303 dead transitions. [2024-06-21 18:30:42,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 303 transitions, 4290 flow [2024-06-21 18:30:42,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:30:42,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:30:42,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-21 18:30:42,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46770025839793283 [2024-06-21 18:30:42,066 INFO L175 Difference]: Start difference. First operand has 158 places, 262 transitions, 3220 flow. Second operand 9 states and 181 transitions. [2024-06-21 18:30:42,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 303 transitions, 4290 flow [2024-06-21 18:30:42,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 303 transitions, 4046 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 18:30:42,257 INFO L231 Difference]: Finished difference. Result has 161 places, 272 transitions, 3297 flow [2024-06-21 18:30:42,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3297, PETRI_PLACES=161, PETRI_TRANSITIONS=272} [2024-06-21 18:30:42,257 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 117 predicate places. [2024-06-21 18:30:42,257 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 272 transitions, 3297 flow [2024-06-21 18:30:42,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:42,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:42,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:42,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 18:30:42,258 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:42,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:42,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1657691167, now seen corresponding path program 5 times [2024-06-21 18:30:42,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:42,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999974708] [2024-06-21 18:30:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:42,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:44,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:44,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:44,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999974708] [2024-06-21 18:30:44,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999974708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:44,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:44,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:44,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371300363] [2024-06-21 18:30:44,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:44,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:44,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:44,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:44,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:44,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:30:44,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 272 transitions, 3297 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:44,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:44,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:30:44,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:45,281 INFO L124 PetriNetUnfolderBase]: 2587/3964 cut-off events. [2024-06-21 18:30:45,281 INFO L125 PetriNetUnfolderBase]: For 176578/176603 co-relation queries the response was YES. [2024-06-21 18:30:45,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28342 conditions, 3964 events. 2587/3964 cut-off events. For 176578/176603 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 20311 event pairs, 1109 based on Foata normal form. 3/3938 useless extension candidates. Maximal degree in co-relation 28270. Up to 3689 conditions per place. [2024-06-21 18:30:45,309 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 246 selfloop transitions, 46 changer transitions 0/298 dead transitions. [2024-06-21 18:30:45,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 298 transitions, 4008 flow [2024-06-21 18:30:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:30:45,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:30:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-21 18:30:45,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-21 18:30:45,311 INFO L175 Difference]: Start difference. First operand has 161 places, 272 transitions, 3297 flow. Second operand 8 states and 151 transitions. [2024-06-21 18:30:45,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 298 transitions, 4008 flow [2024-06-21 18:30:45,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 298 transitions, 3908 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-21 18:30:45,551 INFO L231 Difference]: Finished difference. Result has 166 places, 278 transitions, 3374 flow [2024-06-21 18:30:45,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3374, PETRI_PLACES=166, PETRI_TRANSITIONS=278} [2024-06-21 18:30:45,552 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 122 predicate places. [2024-06-21 18:30:45,552 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 278 transitions, 3374 flow [2024-06-21 18:30:45,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:45,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:45,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:45,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 18:30:45,552 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:45,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:45,553 INFO L85 PathProgramCache]: Analyzing trace with hash 838592419, now seen corresponding path program 6 times [2024-06-21 18:30:45,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:45,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479925346] [2024-06-21 18:30:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:45,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:47,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:47,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479925346] [2024-06-21 18:30:47,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479925346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:47,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:47,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:47,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433385896] [2024-06-21 18:30:47,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:47,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:47,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:47,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:47,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:48,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:30:48,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 278 transitions, 3374 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:48,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:48,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:30:48,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:49,019 INFO L124 PetriNetUnfolderBase]: 2645/4050 cut-off events. [2024-06-21 18:30:49,020 INFO L125 PetriNetUnfolderBase]: For 189957/189984 co-relation queries the response was YES. [2024-06-21 18:30:49,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29429 conditions, 4050 events. 2645/4050 cut-off events. For 189957/189984 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 20752 event pairs, 1115 based on Foata normal form. 5/4026 useless extension candidates. Maximal degree in co-relation 29354. Up to 3576 conditions per place. [2024-06-21 18:30:49,051 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 208 selfloop transitions, 110 changer transitions 0/324 dead transitions. [2024-06-21 18:30:49,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 324 transitions, 4677 flow [2024-06-21 18:30:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:30:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:30:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-21 18:30:49,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2024-06-21 18:30:49,053 INFO L175 Difference]: Start difference. First operand has 166 places, 278 transitions, 3374 flow. Second operand 8 states and 161 transitions. [2024-06-21 18:30:49,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 324 transitions, 4677 flow [2024-06-21 18:30:49,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 324 transitions, 4600 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 18:30:49,290 INFO L231 Difference]: Finished difference. Result has 170 places, 296 transitions, 3835 flow [2024-06-21 18:30:49,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3835, PETRI_PLACES=170, PETRI_TRANSITIONS=296} [2024-06-21 18:30:49,290 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 126 predicate places. [2024-06-21 18:30:49,290 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 296 transitions, 3835 flow [2024-06-21 18:30:49,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:49,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:49,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:49,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 18:30:49,291 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:49,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:49,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1653966300, now seen corresponding path program 2 times [2024-06-21 18:30:49,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:49,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032134012] [2024-06-21 18:30:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:49,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:51,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:51,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032134012] [2024-06-21 18:30:51,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032134012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:51,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:51,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:51,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571065678] [2024-06-21 18:30:51,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:51,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:51,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:51,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:51,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:51,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:30:51,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 296 transitions, 3835 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:51,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:51,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:30:51,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:52,071 INFO L124 PetriNetUnfolderBase]: 2697/4131 cut-off events. [2024-06-21 18:30:52,072 INFO L125 PetriNetUnfolderBase]: For 204658/204685 co-relation queries the response was YES. [2024-06-21 18:30:52,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30636 conditions, 4131 events. 2697/4131 cut-off events. For 204658/204685 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 21270 event pairs, 1129 based on Foata normal form. 5/4106 useless extension candidates. Maximal degree in co-relation 30559. Up to 3731 conditions per place. [2024-06-21 18:30:52,110 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 266 selfloop transitions, 65 changer transitions 0/337 dead transitions. [2024-06-21 18:30:52,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 337 transitions, 4980 flow [2024-06-21 18:30:52,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:30:52,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:30:52,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-21 18:30:52,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-21 18:30:52,112 INFO L175 Difference]: Start difference. First operand has 170 places, 296 transitions, 3835 flow. Second operand 8 states and 160 transitions. [2024-06-21 18:30:52,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 337 transitions, 4980 flow [2024-06-21 18:30:52,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 337 transitions, 4752 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-21 18:30:52,415 INFO L231 Difference]: Finished difference. Result has 174 places, 308 transitions, 3939 flow [2024-06-21 18:30:52,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3607, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3939, PETRI_PLACES=174, PETRI_TRANSITIONS=308} [2024-06-21 18:30:52,416 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 130 predicate places. [2024-06-21 18:30:52,416 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 308 transitions, 3939 flow [2024-06-21 18:30:52,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:52,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:52,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:52,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 18:30:52,416 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:52,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:52,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1678376951, now seen corresponding path program 7 times [2024-06-21 18:30:52,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:52,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699591483] [2024-06-21 18:30:52,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:52,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:54,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:54,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699591483] [2024-06-21 18:30:54,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699591483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:54,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:54,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:54,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802798007] [2024-06-21 18:30:54,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:54,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:54,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:54,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:54,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:54,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:30:54,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 308 transitions, 3939 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:54,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:54,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:30:54,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:55,238 INFO L124 PetriNetUnfolderBase]: 2689/4122 cut-off events. [2024-06-21 18:30:55,239 INFO L125 PetriNetUnfolderBase]: For 214361/214388 co-relation queries the response was YES. [2024-06-21 18:30:55,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30974 conditions, 4122 events. 2689/4122 cut-off events. For 214361/214388 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 21238 event pairs, 1117 based on Foata normal form. 5/4097 useless extension candidates. Maximal degree in co-relation 30896. Up to 3643 conditions per place. [2024-06-21 18:30:55,274 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 222 selfloop transitions, 106 changer transitions 0/334 dead transitions. [2024-06-21 18:30:55,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 334 transitions, 4894 flow [2024-06-21 18:30:55,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:30:55,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:30:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-21 18:30:55,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-21 18:30:55,277 INFO L175 Difference]: Start difference. First operand has 174 places, 308 transitions, 3939 flow. Second operand 8 states and 160 transitions. [2024-06-21 18:30:55,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 334 transitions, 4894 flow [2024-06-21 18:30:55,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 334 transitions, 4728 flow, removed 64 selfloop flow, removed 4 redundant places. [2024-06-21 18:30:55,547 INFO L231 Difference]: Finished difference. Result has 178 places, 308 transitions, 4001 flow [2024-06-21 18:30:55,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3773, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4001, PETRI_PLACES=178, PETRI_TRANSITIONS=308} [2024-06-21 18:30:55,548 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 134 predicate places. [2024-06-21 18:30:55,548 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 308 transitions, 4001 flow [2024-06-21 18:30:55,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:55,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:55,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:55,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 18:30:55,549 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:55,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:55,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1477069528, now seen corresponding path program 3 times [2024-06-21 18:30:55,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:55,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947966855] [2024-06-21 18:30:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:55,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:57,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:57,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947966855] [2024-06-21 18:30:57,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947966855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:57,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:57,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:57,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930477079] [2024-06-21 18:30:57,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:57,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:57,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:57,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:57,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:57,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:30:57,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 308 transitions, 4001 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:57,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:57,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:30:57,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:58,139 INFO L124 PetriNetUnfolderBase]: 2760/4230 cut-off events. [2024-06-21 18:30:58,139 INFO L125 PetriNetUnfolderBase]: For 231075/231100 co-relation queries the response was YES. [2024-06-21 18:30:58,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32372 conditions, 4230 events. 2760/4230 cut-off events. For 231075/231100 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 21960 event pairs, 1131 based on Foata normal form. 5/4206 useless extension candidates. Maximal degree in co-relation 32292. Up to 3919 conditions per place. [2024-06-21 18:30:58,175 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 312 selfloop transitions, 35 changer transitions 0/353 dead transitions. [2024-06-21 18:30:58,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 353 transitions, 5325 flow [2024-06-21 18:30:58,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:30:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:30:58,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-21 18:30:58,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-21 18:30:58,177 INFO L175 Difference]: Start difference. First operand has 178 places, 308 transitions, 4001 flow. Second operand 8 states and 155 transitions. [2024-06-21 18:30:58,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 353 transitions, 5325 flow [2024-06-21 18:30:58,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 353 transitions, 5065 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 18:30:58,517 INFO L231 Difference]: Finished difference. Result has 179 places, 322 transitions, 4114 flow [2024-06-21 18:30:58,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3741, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4114, PETRI_PLACES=179, PETRI_TRANSITIONS=322} [2024-06-21 18:30:58,517 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 135 predicate places. [2024-06-21 18:30:58,517 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 322 transitions, 4114 flow [2024-06-21 18:30:58,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:58,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:58,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:58,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 18:30:58,518 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:30:58,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:58,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1509866520, now seen corresponding path program 4 times [2024-06-21 18:30:58,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:58,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557442014] [2024-06-21 18:30:58,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:58,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:30:59,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:59,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557442014] [2024-06-21 18:30:59,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557442014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:59,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:59,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:59,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758485780] [2024-06-21 18:30:59,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:59,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:59,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:59,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:59,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:59,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:30:59,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 322 transitions, 4114 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:59,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:59,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:30:59,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:01,075 INFO L124 PetriNetUnfolderBase]: 2747/4212 cut-off events. [2024-06-21 18:31:01,075 INFO L125 PetriNetUnfolderBase]: For 239093/239118 co-relation queries the response was YES. [2024-06-21 18:31:01,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32211 conditions, 4212 events. 2747/4212 cut-off events. For 239093/239118 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 21858 event pairs, 1129 based on Foata normal form. 5/4188 useless extension candidates. Maximal degree in co-relation 32130. Up to 3946 conditions per place. [2024-06-21 18:31:01,112 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 318 selfloop transitions, 23 changer transitions 0/347 dead transitions. [2024-06-21 18:31:01,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 347 transitions, 4970 flow [2024-06-21 18:31:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:31:01,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:31:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-21 18:31:01,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-21 18:31:01,114 INFO L175 Difference]: Start difference. First operand has 179 places, 322 transitions, 4114 flow. Second operand 8 states and 150 transitions. [2024-06-21 18:31:01,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 347 transitions, 4970 flow [2024-06-21 18:31:01,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 347 transitions, 4790 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-06-21 18:31:01,388 INFO L231 Difference]: Finished difference. Result has 183 places, 322 transitions, 3992 flow [2024-06-21 18:31:01,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3934, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3992, PETRI_PLACES=183, PETRI_TRANSITIONS=322} [2024-06-21 18:31:01,388 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 139 predicate places. [2024-06-21 18:31:01,389 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 322 transitions, 3992 flow [2024-06-21 18:31:01,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:01,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:01,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:01,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 18:31:01,389 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:01,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:01,390 INFO L85 PathProgramCache]: Analyzing trace with hash 118458415, now seen corresponding path program 8 times [2024-06-21 18:31:01,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:01,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171129746] [2024-06-21 18:31:01,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:01,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:02,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:02,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171129746] [2024-06-21 18:31:02,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171129746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:02,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:02,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:31:02,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855053983] [2024-06-21 18:31:02,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:02,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:31:02,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:02,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:31:02,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:31:03,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:31:03,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 322 transitions, 3992 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:03,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:03,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:31:03,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:04,057 INFO L124 PetriNetUnfolderBase]: 2765/4239 cut-off events. [2024-06-21 18:31:04,057 INFO L125 PetriNetUnfolderBase]: For 249794/249819 co-relation queries the response was YES. [2024-06-21 18:31:04,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32669 conditions, 4239 events. 2765/4239 cut-off events. For 249794/249819 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 22040 event pairs, 1129 based on Foata normal form. 3/4213 useless extension candidates. Maximal degree in co-relation 32587. Up to 3979 conditions per place. [2024-06-21 18:31:04,099 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 319 selfloop transitions, 25 changer transitions 0/350 dead transitions. [2024-06-21 18:31:04,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 350 transitions, 4938 flow [2024-06-21 18:31:04,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:31:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:31:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-21 18:31:04,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-21 18:31:04,101 INFO L175 Difference]: Start difference. First operand has 183 places, 322 transitions, 3992 flow. Second operand 8 states and 149 transitions. [2024-06-21 18:31:04,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 350 transitions, 4938 flow [2024-06-21 18:31:04,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 350 transitions, 4855 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 18:31:04,430 INFO L231 Difference]: Finished difference. Result has 183 places, 328 transitions, 4099 flow [2024-06-21 18:31:04,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3909, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4099, PETRI_PLACES=183, PETRI_TRANSITIONS=328} [2024-06-21 18:31:04,431 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 139 predicate places. [2024-06-21 18:31:04,431 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 328 transitions, 4099 flow [2024-06-21 18:31:04,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:04,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:04,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:04,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 18:31:04,432 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:04,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:04,433 INFO L85 PathProgramCache]: Analyzing trace with hash 118250870, now seen corresponding path program 7 times [2024-06-21 18:31:04,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:04,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269365316] [2024-06-21 18:31:04,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:04,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:06,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:06,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269365316] [2024-06-21 18:31:06,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269365316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:06,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:06,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:31:06,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436535907] [2024-06-21 18:31:06,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:06,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:31:06,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:06,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:31:06,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:31:06,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:31:06,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 328 transitions, 4099 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:06,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:06,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:31:06,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:07,740 INFO L124 PetriNetUnfolderBase]: 3040/4643 cut-off events. [2024-06-21 18:31:07,740 INFO L125 PetriNetUnfolderBase]: For 307721/307755 co-relation queries the response was YES. [2024-06-21 18:31:07,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36474 conditions, 4643 events. 3040/4643 cut-off events. For 307721/307755 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 24093 event pairs, 1291 based on Foata normal form. 3/4602 useless extension candidates. Maximal degree in co-relation 36392. Up to 4286 conditions per place. [2024-06-21 18:31:07,788 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 293 selfloop transitions, 25 changer transitions 0/353 dead transitions. [2024-06-21 18:31:07,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 353 transitions, 4932 flow [2024-06-21 18:31:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:31:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:31:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-21 18:31:07,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-21 18:31:07,790 INFO L175 Difference]: Start difference. First operand has 183 places, 328 transitions, 4099 flow. Second operand 8 states and 149 transitions. [2024-06-21 18:31:07,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 353 transitions, 4932 flow [2024-06-21 18:31:08,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 353 transitions, 4810 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-21 18:31:08,242 INFO L231 Difference]: Finished difference. Result has 185 places, 331 transitions, 4096 flow [2024-06-21 18:31:08,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3977, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4096, PETRI_PLACES=185, PETRI_TRANSITIONS=331} [2024-06-21 18:31:08,243 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 141 predicate places. [2024-06-21 18:31:08,243 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 331 transitions, 4096 flow [2024-06-21 18:31:08,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:08,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:08,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:08,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 18:31:08,244 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:08,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:08,244 INFO L85 PathProgramCache]: Analyzing trace with hash -457862273, now seen corresponding path program 9 times [2024-06-21 18:31:08,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:08,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882462143] [2024-06-21 18:31:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:08,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:09,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:09,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882462143] [2024-06-21 18:31:09,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882462143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:09,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:09,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:31:09,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579855990] [2024-06-21 18:31:09,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:09,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:31:09,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:09,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:31:09,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:31:09,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:31:09,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 331 transitions, 4096 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:09,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:09,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:31:09,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:11,228 INFO L124 PetriNetUnfolderBase]: 2778/4259 cut-off events. [2024-06-21 18:31:11,228 INFO L125 PetriNetUnfolderBase]: For 275290/275321 co-relation queries the response was YES. [2024-06-21 18:31:11,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33703 conditions, 4259 events. 2778/4259 cut-off events. For 275290/275321 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 22136 event pairs, 1129 based on Foata normal form. 3/4233 useless extension candidates. Maximal degree in co-relation 33620. Up to 3928 conditions per place. [2024-06-21 18:31:11,268 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 305 selfloop transitions, 52 changer transitions 0/363 dead transitions. [2024-06-21 18:31:11,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 363 transitions, 5273 flow [2024-06-21 18:31:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:31:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:31:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-21 18:31:11,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-21 18:31:11,269 INFO L175 Difference]: Start difference. First operand has 185 places, 331 transitions, 4096 flow. Second operand 8 states and 154 transitions. [2024-06-21 18:31:11,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 363 transitions, 5273 flow [2024-06-21 18:31:11,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 363 transitions, 5180 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-21 18:31:11,645 INFO L231 Difference]: Finished difference. Result has 187 places, 337 transitions, 4247 flow [2024-06-21 18:31:11,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4003, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4247, PETRI_PLACES=187, PETRI_TRANSITIONS=337} [2024-06-21 18:31:11,645 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 143 predicate places. [2024-06-21 18:31:11,645 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 337 transitions, 4247 flow [2024-06-21 18:31:11,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:11,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:11,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:11,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 18:31:11,646 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:11,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:11,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1510075987, now seen corresponding path program 10 times [2024-06-21 18:31:11,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:11,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333770423] [2024-06-21 18:31:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:11,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:13,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:13,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333770423] [2024-06-21 18:31:13,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333770423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:13,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:13,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:31:13,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128889439] [2024-06-21 18:31:13,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:13,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:31:13,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:13,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:31:13,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:31:13,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:31:13,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 337 transitions, 4247 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:13,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:13,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:31:13,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:14,461 INFO L124 PetriNetUnfolderBase]: 2770/4248 cut-off events. [2024-06-21 18:31:14,461 INFO L125 PetriNetUnfolderBase]: For 286229/286260 co-relation queries the response was YES. [2024-06-21 18:31:14,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33875 conditions, 4248 events. 2770/4248 cut-off events. For 286229/286260 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 22068 event pairs, 1129 based on Foata normal form. 3/4222 useless extension candidates. Maximal degree in co-relation 33791. Up to 3920 conditions per place. [2024-06-21 18:31:14,500 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 307 selfloop transitions, 50 changer transitions 0/363 dead transitions. [2024-06-21 18:31:14,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 363 transitions, 5178 flow [2024-06-21 18:31:14,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:31:14,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:31:14,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-21 18:31:14,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44476744186046513 [2024-06-21 18:31:14,502 INFO L175 Difference]: Start difference. First operand has 187 places, 337 transitions, 4247 flow. Second operand 8 states and 153 transitions. [2024-06-21 18:31:14,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 363 transitions, 5178 flow [2024-06-21 18:31:14,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 363 transitions, 4832 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-06-21 18:31:14,957 INFO L231 Difference]: Finished difference. Result has 188 places, 337 transitions, 4013 flow [2024-06-21 18:31:14,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3901, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4013, PETRI_PLACES=188, PETRI_TRANSITIONS=337} [2024-06-21 18:31:14,957 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 144 predicate places. [2024-06-21 18:31:14,958 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 337 transitions, 4013 flow [2024-06-21 18:31:14,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:14,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:14,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:14,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 18:31:14,958 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:14,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:14,959 INFO L85 PathProgramCache]: Analyzing trace with hash 118256822, now seen corresponding path program 5 times [2024-06-21 18:31:14,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:14,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35610982] [2024-06-21 18:31:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:14,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:16,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:16,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35610982] [2024-06-21 18:31:16,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35610982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:16,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:16,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:31:16,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531552819] [2024-06-21 18:31:16,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:16,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:31:16,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:16,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:31:16,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:31:16,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:31:16,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 337 transitions, 4013 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:16,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:16,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:31:16,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:17,833 INFO L124 PetriNetUnfolderBase]: 2757/4230 cut-off events. [2024-06-21 18:31:17,833 INFO L125 PetriNetUnfolderBase]: For 295099/295130 co-relation queries the response was YES. [2024-06-21 18:31:17,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33493 conditions, 4230 events. 2757/4230 cut-off events. For 295099/295130 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 21948 event pairs, 1127 based on Foata normal form. 5/4206 useless extension candidates. Maximal degree in co-relation 33409. Up to 3874 conditions per place. [2024-06-21 18:31:17,873 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 310 selfloop transitions, 51 changer transitions 0/367 dead transitions. [2024-06-21 18:31:17,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 367 transitions, 4965 flow [2024-06-21 18:31:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:31:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:31:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-21 18:31:17,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-21 18:31:17,875 INFO L175 Difference]: Start difference. First operand has 188 places, 337 transitions, 4013 flow. Second operand 8 states and 155 transitions. [2024-06-21 18:31:17,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 367 transitions, 4965 flow [2024-06-21 18:31:18,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 367 transitions, 4684 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-21 18:31:18,355 INFO L231 Difference]: Finished difference. Result has 188 places, 337 transitions, 3866 flow [2024-06-21 18:31:18,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3751, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3866, PETRI_PLACES=188, PETRI_TRANSITIONS=337} [2024-06-21 18:31:18,355 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 144 predicate places. [2024-06-21 18:31:18,356 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 337 transitions, 3866 flow [2024-06-21 18:31:18,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:18,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:18,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:18,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 18:31:18,356 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:18,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:18,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1471440884, now seen corresponding path program 1 times [2024-06-21 18:31:18,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:18,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464201799] [2024-06-21 18:31:18,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:18,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:20,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:20,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464201799] [2024-06-21 18:31:20,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464201799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:20,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:20,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:31:20,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052837045] [2024-06-21 18:31:20,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:20,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:31:20,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:20,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:31:20,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:31:20,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-21 18:31:20,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 337 transitions, 3866 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:20,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:20,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-21 18:31:20,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:22,334 INFO L124 PetriNetUnfolderBase]: 3196/4817 cut-off events. [2024-06-21 18:31:22,334 INFO L125 PetriNetUnfolderBase]: For 348270/348301 co-relation queries the response was YES. [2024-06-21 18:31:22,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37889 conditions, 4817 events. 3196/4817 cut-off events. For 348270/348301 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 24466 event pairs, 1320 based on Foata normal form. 4/4791 useless extension candidates. Maximal degree in co-relation 37804. Up to 4566 conditions per place. [2024-06-21 18:31:22,386 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 345 selfloop transitions, 31 changer transitions 0/381 dead transitions. [2024-06-21 18:31:22,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 381 transitions, 4986 flow [2024-06-21 18:31:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:31:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:31:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-21 18:31:22,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42377260981912146 [2024-06-21 18:31:22,391 INFO L175 Difference]: Start difference. First operand has 188 places, 337 transitions, 3866 flow. Second operand 9 states and 164 transitions. [2024-06-21 18:31:22,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 381 transitions, 4986 flow [2024-06-21 18:31:22,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 381 transitions, 4723 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-21 18:31:22,881 INFO L231 Difference]: Finished difference. Result has 191 places, 353 transitions, 3921 flow [2024-06-21 18:31:22,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3625, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3921, PETRI_PLACES=191, PETRI_TRANSITIONS=353} [2024-06-21 18:31:22,882 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 147 predicate places. [2024-06-21 18:31:22,882 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 353 transitions, 3921 flow [2024-06-21 18:31:22,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:22,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:22,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:22,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 18:31:22,882 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:22,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:22,883 INFO L85 PathProgramCache]: Analyzing trace with hash -827920359, now seen corresponding path program 1 times [2024-06-21 18:31:22,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:22,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474476295] [2024-06-21 18:31:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:22,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:24,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:24,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474476295] [2024-06-21 18:31:24,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474476295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:24,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:24,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:31:24,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983456014] [2024-06-21 18:31:24,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:24,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:31:24,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:31:24,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:31:25,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:31:25,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 353 transitions, 3921 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:25,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:25,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:31:25,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:26,231 INFO L124 PetriNetUnfolderBase]: 3013/4630 cut-off events. [2024-06-21 18:31:26,231 INFO L125 PetriNetUnfolderBase]: For 357341/357374 co-relation queries the response was YES. [2024-06-21 18:31:26,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37016 conditions, 4630 events. 3013/4630 cut-off events. For 357341/357374 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 24187 event pairs, 1356 based on Foata normal form. 14/4619 useless extension candidates. Maximal degree in co-relation 36928. Up to 4261 conditions per place. [2024-06-21 18:31:26,281 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 280 selfloop transitions, 13 changer transitions 0/364 dead transitions. [2024-06-21 18:31:26,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 364 transitions, 4575 flow [2024-06-21 18:31:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:31:26,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:31:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-21 18:31:26,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-21 18:31:26,282 INFO L175 Difference]: Start difference. First operand has 191 places, 353 transitions, 3921 flow. Second operand 6 states and 108 transitions. [2024-06-21 18:31:26,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 364 transitions, 4575 flow [2024-06-21 18:31:26,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 364 transitions, 4490 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-21 18:31:26,934 INFO L231 Difference]: Finished difference. Result has 193 places, 356 transitions, 3904 flow [2024-06-21 18:31:26,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3836, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3904, PETRI_PLACES=193, PETRI_TRANSITIONS=356} [2024-06-21 18:31:26,935 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 149 predicate places. [2024-06-21 18:31:26,935 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 356 transitions, 3904 flow [2024-06-21 18:31:26,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:26,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:26,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:26,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 18:31:26,935 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:26,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash -600737302, now seen corresponding path program 1 times [2024-06-21 18:31:26,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:26,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951859454] [2024-06-21 18:31:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:26,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:28,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:28,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951859454] [2024-06-21 18:31:28,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951859454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:28,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:28,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:31:28,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671743032] [2024-06-21 18:31:28,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:28,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:31:28,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:31:28,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:31:28,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-21 18:31:28,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 356 transitions, 3904 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:28,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:28,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-21 18:31:28,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:30,065 INFO L124 PetriNetUnfolderBase]: 2475/4080 cut-off events. [2024-06-21 18:31:30,065 INFO L125 PetriNetUnfolderBase]: For 365030/365142 co-relation queries the response was YES. [2024-06-21 18:31:30,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34723 conditions, 4080 events. 2475/4080 cut-off events. For 365030/365142 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 23981 event pairs, 607 based on Foata normal form. 14/4000 useless extension candidates. Maximal degree in co-relation 34631. Up to 3117 conditions per place. [2024-06-21 18:31:30,103 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 235 selfloop transitions, 103 changer transitions 0/403 dead transitions. [2024-06-21 18:31:30,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 403 transitions, 5222 flow [2024-06-21 18:31:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:30,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 228 transitions. [2024-06-21 18:31:30,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5302325581395348 [2024-06-21 18:31:30,105 INFO L175 Difference]: Start difference. First operand has 193 places, 356 transitions, 3904 flow. Second operand 10 states and 228 transitions. [2024-06-21 18:31:30,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 403 transitions, 5222 flow [2024-06-21 18:31:30,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 403 transitions, 5190 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-21 18:31:30,545 INFO L231 Difference]: Finished difference. Result has 201 places, 366 transitions, 4378 flow [2024-06-21 18:31:30,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3872, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4378, PETRI_PLACES=201, PETRI_TRANSITIONS=366} [2024-06-21 18:31:30,545 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 157 predicate places. [2024-06-21 18:31:30,545 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 366 transitions, 4378 flow [2024-06-21 18:31:30,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:30,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:30,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:30,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 18:31:30,546 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:30,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash 689305988, now seen corresponding path program 2 times [2024-06-21 18:31:30,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:30,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438254899] [2024-06-21 18:31:30,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:30,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:33,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:33,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438254899] [2024-06-21 18:31:33,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438254899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:33,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:33,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:31:33,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646246423] [2024-06-21 18:31:33,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:33,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:31:33,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:33,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:31:33,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:31:33,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:31:33,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 366 transitions, 4378 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:33,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:33,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:31:33,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:35,293 INFO L124 PetriNetUnfolderBase]: 3098/4771 cut-off events. [2024-06-21 18:31:35,293 INFO L125 PetriNetUnfolderBase]: For 393673/393698 co-relation queries the response was YES. [2024-06-21 18:31:35,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40542 conditions, 4771 events. 3098/4771 cut-off events. For 393673/393698 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 25277 event pairs, 934 based on Foata normal form. 12/4765 useless extension candidates. Maximal degree in co-relation 40446. Up to 3830 conditions per place. [2024-06-21 18:31:35,341 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 234 selfloop transitions, 180 changer transitions 0/421 dead transitions. [2024-06-21 18:31:35,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 421 transitions, 6382 flow [2024-06-21 18:31:35,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-21 18:31:35,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48604651162790696 [2024-06-21 18:31:35,343 INFO L175 Difference]: Start difference. First operand has 201 places, 366 transitions, 4378 flow. Second operand 10 states and 209 transitions. [2024-06-21 18:31:35,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 421 transitions, 6382 flow [2024-06-21 18:31:35,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 421 transitions, 6234 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-21 18:31:35,841 INFO L231 Difference]: Finished difference. Result has 207 places, 382 transitions, 4992 flow [2024-06-21 18:31:35,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4244, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4992, PETRI_PLACES=207, PETRI_TRANSITIONS=382} [2024-06-21 18:31:35,842 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 163 predicate places. [2024-06-21 18:31:35,842 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 382 transitions, 4992 flow [2024-06-21 18:31:35,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:35,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:35,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:35,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 18:31:35,843 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:35,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:35,843 INFO L85 PathProgramCache]: Analyzing trace with hash 68036948, now seen corresponding path program 1 times [2024-06-21 18:31:35,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:35,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465651253] [2024-06-21 18:31:35,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:35,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:37,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:37,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:37,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465651253] [2024-06-21 18:31:37,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465651253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:37,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:37,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:31:37,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174985829] [2024-06-21 18:31:37,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:37,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:31:37,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:37,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:31:37,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:31:38,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:31:38,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 382 transitions, 4992 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:38,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:38,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:31:38,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:39,543 INFO L124 PetriNetUnfolderBase]: 3187/4883 cut-off events. [2024-06-21 18:31:39,543 INFO L125 PetriNetUnfolderBase]: For 424814/424843 co-relation queries the response was YES. [2024-06-21 18:31:39,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43024 conditions, 4883 events. 3187/4883 cut-off events. For 424814/424843 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 25838 event pairs, 968 based on Foata normal form. 12/4866 useless extension candidates. Maximal degree in co-relation 42927. Up to 4258 conditions per place. [2024-06-21 18:31:39,712 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 299 selfloop transitions, 124 changer transitions 0/430 dead transitions. [2024-06-21 18:31:39,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 430 transitions, 6542 flow [2024-06-21 18:31:39,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:31:39,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:31:39,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-21 18:31:39,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-21 18:31:39,714 INFO L175 Difference]: Start difference. First operand has 207 places, 382 transitions, 4992 flow. Second operand 11 states and 215 transitions. [2024-06-21 18:31:39,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 430 transitions, 6542 flow [2024-06-21 18:31:40,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 430 transitions, 6417 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-21 18:31:40,336 INFO L231 Difference]: Finished difference. Result has 216 places, 392 transitions, 5415 flow [2024-06-21 18:31:40,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4891, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5415, PETRI_PLACES=216, PETRI_TRANSITIONS=392} [2024-06-21 18:31:40,336 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 172 predicate places. [2024-06-21 18:31:40,336 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 392 transitions, 5415 flow [2024-06-21 18:31:40,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:31:40,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:40,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:40,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 18:31:40,337 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:40,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:40,339 INFO L85 PathProgramCache]: Analyzing trace with hash 122837512, now seen corresponding path program 2 times [2024-06-21 18:31:40,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:40,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561661115] [2024-06-21 18:31:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:40,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:43,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:43,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561661115] [2024-06-21 18:31:43,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561661115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:43,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:43,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:31:43,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981510170] [2024-06-21 18:31:43,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:43,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:31:43,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:31:43,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:31:43,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:31:43,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 392 transitions, 5415 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) [2024-06-21 18:31:43,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:43,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:31:43,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:45,363 INFO L124 PetriNetUnfolderBase]: 3147/4917 cut-off events. [2024-06-21 18:31:45,363 INFO L125 PetriNetUnfolderBase]: For 449543/449586 co-relation queries the response was YES. [2024-06-21 18:31:45,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44342 conditions, 4917 events. 3147/4917 cut-off events. For 449543/449586 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 27002 event pairs, 938 based on Foata normal form. 19/4909 useless extension candidates. Maximal degree in co-relation 44242. Up to 4201 conditions per place. [2024-06-21 18:31:45,419 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 314 selfloop transitions, 101 changer transitions 0/457 dead transitions. [2024-06-21 18:31:45,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 457 transitions, 6959 flow [2024-06-21 18:31:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:31:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:31:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2024-06-21 18:31:45,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48414376321353064 [2024-06-21 18:31:45,421 INFO L175 Difference]: Start difference. First operand has 216 places, 392 transitions, 5415 flow. Second operand 11 states and 229 transitions. [2024-06-21 18:31:45,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 457 transitions, 6959 flow [2024-06-21 18:31:46,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 457 transitions, 6770 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-21 18:31:46,090 INFO L231 Difference]: Finished difference. Result has 221 places, 408 transitions, 5732 flow [2024-06-21 18:31:46,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5232, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5732, PETRI_PLACES=221, PETRI_TRANSITIONS=408} [2024-06-21 18:31:46,091 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 177 predicate places. [2024-06-21 18:31:46,091 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 408 transitions, 5732 flow [2024-06-21 18:31:46,091 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) [2024-06-21 18:31:46,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:46,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:46,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 18:31:46,092 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:46,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:46,092 INFO L85 PathProgramCache]: Analyzing trace with hash 126025676, now seen corresponding path program 2 times [2024-06-21 18:31:46,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:46,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356815050] [2024-06-21 18:31:46,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:46,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:49,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:49,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356815050] [2024-06-21 18:31:49,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356815050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:49,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:49,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:31:49,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251100376] [2024-06-21 18:31:49,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:49,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:31:49,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:49,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:31:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:31:49,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:31:49,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 408 transitions, 5732 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) [2024-06-21 18:31:49,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:49,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:31:49,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:51,103 INFO L124 PetriNetUnfolderBase]: 3325/5108 cut-off events. [2024-06-21 18:31:51,103 INFO L125 PetriNetUnfolderBase]: For 453645/453674 co-relation queries the response was YES. [2024-06-21 18:31:51,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46018 conditions, 5108 events. 3325/5108 cut-off events. For 453645/453674 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 27464 event pairs, 997 based on Foata normal form. 13/5092 useless extension candidates. Maximal degree in co-relation 45917. Up to 4466 conditions per place. [2024-06-21 18:31:51,160 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 317 selfloop transitions, 130 changer transitions 0/454 dead transitions. [2024-06-21 18:31:51,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 454 transitions, 7217 flow [2024-06-21 18:31:51,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:31:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:31:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-21 18:31:51,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790697674418605 [2024-06-21 18:31:51,162 INFO L175 Difference]: Start difference. First operand has 221 places, 408 transitions, 5732 flow. Second operand 10 states and 206 transitions. [2024-06-21 18:31:51,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 454 transitions, 7217 flow [2024-06-21 18:31:51,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 454 transitions, 6995 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-21 18:31:51,926 INFO L231 Difference]: Finished difference. Result has 224 places, 414 transitions, 5900 flow [2024-06-21 18:31:51,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5510, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5900, PETRI_PLACES=224, PETRI_TRANSITIONS=414} [2024-06-21 18:31:51,926 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 180 predicate places. [2024-06-21 18:31:51,926 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 414 transitions, 5900 flow [2024-06-21 18:31:51,927 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) [2024-06-21 18:31:51,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:51,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:51,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 18:31:51,927 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:51,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:51,927 INFO L85 PathProgramCache]: Analyzing trace with hash 209138722, now seen corresponding path program 3 times [2024-06-21 18:31:51,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312086936] [2024-06-21 18:31:51,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:51,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:31:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:31:55,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:31:55,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312086936] [2024-06-21 18:31:55,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312086936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:31:55,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:31:55,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:31:55,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231139924] [2024-06-21 18:31:55,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:31:55,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:31:55,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:31:55,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:31:55,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:31:55,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-21 18:31:55,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 414 transitions, 5900 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) [2024-06-21 18:31:55,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:31:55,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-21 18:31:55,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:31:57,403 INFO L124 PetriNetUnfolderBase]: 3221/5023 cut-off events. [2024-06-21 18:31:57,403 INFO L125 PetriNetUnfolderBase]: For 482181/482242 co-relation queries the response was YES. [2024-06-21 18:31:57,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45956 conditions, 5023 events. 3221/5023 cut-off events. For 482181/482242 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 27706 event pairs, 959 based on Foata normal form. 25/5012 useless extension candidates. Maximal degree in co-relation 45852. Up to 4270 conditions per place. [2024-06-21 18:31:57,462 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 299 selfloop transitions, 115 changer transitions 0/458 dead transitions. [2024-06-21 18:31:57,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 458 transitions, 7129 flow [2024-06-21 18:31:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:31:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:31:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-21 18:31:57,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2024-06-21 18:31:57,463 INFO L175 Difference]: Start difference. First operand has 224 places, 414 transitions, 5900 flow. Second operand 9 states and 198 transitions. [2024-06-21 18:31:57,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 458 transitions, 7129 flow [2024-06-21 18:31:58,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 458 transitions, 6781 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-06-21 18:31:58,271 INFO L231 Difference]: Finished difference. Result has 226 places, 420 transitions, 5943 flow [2024-06-21 18:31:58,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5552, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5943, PETRI_PLACES=226, PETRI_TRANSITIONS=420} [2024-06-21 18:31:58,272 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 182 predicate places. [2024-06-21 18:31:58,272 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 420 transitions, 5943 flow [2024-06-21 18:31:58,272 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) [2024-06-21 18:31:58,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:31:58,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:31:58,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 18:31:58,272 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:31:58,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:31:58,273 INFO L85 PathProgramCache]: Analyzing trace with hash 212717486, now seen corresponding path program 3 times [2024-06-21 18:31:58,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:31:58,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974563298] [2024-06-21 18:31:58,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:31:58,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:31:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:01,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:01,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974563298] [2024-06-21 18:32:01,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974563298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:01,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:01,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:32:01,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476218493] [2024-06-21 18:32:01,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:01,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:32:01,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:01,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:32:01,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:32:01,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:32:01,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 420 transitions, 5943 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:01,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:01,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:32:01,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:03,614 INFO L124 PetriNetUnfolderBase]: 3388/5212 cut-off events. [2024-06-21 18:32:03,614 INFO L125 PetriNetUnfolderBase]: For 468097/468113 co-relation queries the response was YES. [2024-06-21 18:32:03,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47217 conditions, 5212 events. 3388/5212 cut-off events. For 468097/468113 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 28214 event pairs, 1030 based on Foata normal form. 5/5193 useless extension candidates. Maximal degree in co-relation 47113. Up to 4731 conditions per place. [2024-06-21 18:32:03,675 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 368 selfloop transitions, 99 changer transitions 0/474 dead transitions. [2024-06-21 18:32:03,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 474 transitions, 7520 flow [2024-06-21 18:32:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:32:03,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:32:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-21 18:32:03,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4587737843551797 [2024-06-21 18:32:03,677 INFO L175 Difference]: Start difference. First operand has 226 places, 420 transitions, 5943 flow. Second operand 11 states and 217 transitions. [2024-06-21 18:32:03,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 474 transitions, 7520 flow [2024-06-21 18:32:04,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 474 transitions, 7227 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-21 18:32:04,508 INFO L231 Difference]: Finished difference. Result has 230 places, 432 transitions, 6074 flow [2024-06-21 18:32:04,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5650, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6074, PETRI_PLACES=230, PETRI_TRANSITIONS=432} [2024-06-21 18:32:04,509 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 186 predicate places. [2024-06-21 18:32:04,509 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 432 transitions, 6074 flow [2024-06-21 18:32:04,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:04,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:04,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:04,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 18:32:04,509 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:32:04,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:04,510 INFO L85 PathProgramCache]: Analyzing trace with hash 212867402, now seen corresponding path program 3 times [2024-06-21 18:32:04,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:04,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503189676] [2024-06-21 18:32:04,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:04,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:06,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:06,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503189676] [2024-06-21 18:32:06,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503189676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:06,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:06,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:32:06,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718857886] [2024-06-21 18:32:06,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:06,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:32:06,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:32:06,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:32:07,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:32:07,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 432 transitions, 6074 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:07,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:07,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:32:07,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:08,926 INFO L124 PetriNetUnfolderBase]: 3436/5298 cut-off events. [2024-06-21 18:32:08,926 INFO L125 PetriNetUnfolderBase]: For 487535/487550 co-relation queries the response was YES. [2024-06-21 18:32:08,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47967 conditions, 5298 events. 3436/5298 cut-off events. For 487535/487550 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 28898 event pairs, 1044 based on Foata normal form. 4/5280 useless extension candidates. Maximal degree in co-relation 47862. Up to 4791 conditions per place. [2024-06-21 18:32:08,986 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 381 selfloop transitions, 100 changer transitions 0/488 dead transitions. [2024-06-21 18:32:08,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 488 transitions, 7800 flow [2024-06-21 18:32:08,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:32:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:32:08,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-06-21 18:32:08,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-21 18:32:08,988 INFO L175 Difference]: Start difference. First operand has 230 places, 432 transitions, 6074 flow. Second operand 12 states and 228 transitions. [2024-06-21 18:32:08,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 488 transitions, 7800 flow [2024-06-21 18:32:09,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 488 transitions, 7610 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-21 18:32:09,942 INFO L231 Difference]: Finished difference. Result has 237 places, 446 transitions, 6380 flow [2024-06-21 18:32:09,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5884, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6380, PETRI_PLACES=237, PETRI_TRANSITIONS=446} [2024-06-21 18:32:09,943 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 193 predicate places. [2024-06-21 18:32:09,943 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 446 transitions, 6380 flow [2024-06-21 18:32:09,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:09,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:09,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:09,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 18:32:09,943 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:32:09,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:09,943 INFO L85 PathProgramCache]: Analyzing trace with hash 212861636, now seen corresponding path program 4 times [2024-06-21 18:32:09,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:09,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748575136] [2024-06-21 18:32:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:09,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:13,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:13,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748575136] [2024-06-21 18:32:13,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748575136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:13,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:13,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:32:13,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310960007] [2024-06-21 18:32:13,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:13,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:32:13,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:13,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:32:13,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:32:13,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:32:13,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 446 transitions, 6380 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:13,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:13,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:32:13,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:15,215 INFO L124 PetriNetUnfolderBase]: 3428/5283 cut-off events. [2024-06-21 18:32:15,215 INFO L125 PetriNetUnfolderBase]: For 504050/504066 co-relation queries the response was YES. [2024-06-21 18:32:15,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48499 conditions, 5283 events. 3428/5283 cut-off events. For 504050/504066 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 28757 event pairs, 1051 based on Foata normal form. 5/5263 useless extension candidates. Maximal degree in co-relation 48389. Up to 4822 conditions per place. [2024-06-21 18:32:15,275 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 387 selfloop transitions, 91 changer transitions 0/485 dead transitions. [2024-06-21 18:32:15,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 485 transitions, 7587 flow [2024-06-21 18:32:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:32:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:32:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-21 18:32:15,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4321705426356589 [2024-06-21 18:32:15,277 INFO L175 Difference]: Start difference. First operand has 237 places, 446 transitions, 6380 flow. Second operand 12 states and 223 transitions. [2024-06-21 18:32:15,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 485 transitions, 7587 flow [2024-06-21 18:32:16,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 485 transitions, 7288 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-21 18:32:16,389 INFO L231 Difference]: Finished difference. Result has 241 places, 446 transitions, 6276 flow [2024-06-21 18:32:16,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6081, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6276, PETRI_PLACES=241, PETRI_TRANSITIONS=446} [2024-06-21 18:32:16,390 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 197 predicate places. [2024-06-21 18:32:16,390 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 446 transitions, 6276 flow [2024-06-21 18:32:16,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:16,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:16,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:16,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 18:32:16,391 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:32:16,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:16,391 INFO L85 PathProgramCache]: Analyzing trace with hash 684714268, now seen corresponding path program 4 times [2024-06-21 18:32:16,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:16,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576829919] [2024-06-21 18:32:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:20,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:20,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576829919] [2024-06-21 18:32:20,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576829919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:20,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:20,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:20,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602590510] [2024-06-21 18:32:20,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:20,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:20,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:20,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:20,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:20,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-21 18:32:20,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 446 transitions, 6276 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:20,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:20,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-21 18:32:20,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:22,266 INFO L124 PetriNetUnfolderBase]: 3350/5182 cut-off events. [2024-06-21 18:32:22,267 INFO L125 PetriNetUnfolderBase]: For 572403/572492 co-relation queries the response was YES. [2024-06-21 18:32:22,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49525 conditions, 5182 events. 3350/5182 cut-off events. For 572403/572492 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 28642 event pairs, 813 based on Foata normal form. 28/5136 useless extension candidates. Maximal degree in co-relation 49414. Up to 4258 conditions per place. [2024-06-21 18:32:22,335 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 305 selfloop transitions, 132 changer transitions 0/485 dead transitions. [2024-06-21 18:32:22,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 485 transitions, 7445 flow [2024-06-21 18:32:22,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:32:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:32:22,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 212 transitions. [2024-06-21 18:32:22,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930232558139535 [2024-06-21 18:32:22,337 INFO L175 Difference]: Start difference. First operand has 241 places, 446 transitions, 6276 flow. Second operand 10 states and 212 transitions. [2024-06-21 18:32:22,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 485 transitions, 7445 flow [2024-06-21 18:32:23,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 485 transitions, 7190 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-21 18:32:23,268 INFO L231 Difference]: Finished difference. Result has 240 places, 446 transitions, 6305 flow [2024-06-21 18:32:23,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6021, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6305, PETRI_PLACES=240, PETRI_TRANSITIONS=446} [2024-06-21 18:32:23,268 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 196 predicate places. [2024-06-21 18:32:23,268 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 446 transitions, 6305 flow [2024-06-21 18:32:23,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:23,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:23,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:23,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 18:32:23,269 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:32:23,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:23,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1992398921, now seen corresponding path program 1 times [2024-06-21 18:32:23,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:23,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407744609] [2024-06-21 18:32:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:23,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:26,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:26,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407744609] [2024-06-21 18:32:26,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407744609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:26,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:26,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:32:26,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472685276] [2024-06-21 18:32:26,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:26,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:32:26,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:26,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:32:26,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:32:26,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:32:26,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 446 transitions, 6305 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:26,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:26,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:32:26,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:28,888 INFO L124 PetriNetUnfolderBase]: 3480/5369 cut-off events. [2024-06-21 18:32:28,889 INFO L125 PetriNetUnfolderBase]: For 544180/544207 co-relation queries the response was YES. [2024-06-21 18:32:28,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49761 conditions, 5369 events. 3480/5369 cut-off events. For 544180/544207 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29364 event pairs, 1006 based on Foata normal form. 7/5353 useless extension candidates. Maximal degree in co-relation 49649. Up to 4779 conditions per place. [2024-06-21 18:32:28,957 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 395 selfloop transitions, 106 changer transitions 0/508 dead transitions. [2024-06-21 18:32:28,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 508 transitions, 8411 flow [2024-06-21 18:32:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:32:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:32:28,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 241 transitions. [2024-06-21 18:32:28,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46705426356589147 [2024-06-21 18:32:28,959 INFO L175 Difference]: Start difference. First operand has 240 places, 446 transitions, 6305 flow. Second operand 12 states and 241 transitions. [2024-06-21 18:32:28,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 508 transitions, 8411 flow [2024-06-21 18:32:30,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 508 transitions, 8099 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 18:32:30,233 INFO L231 Difference]: Finished difference. Result has 244 places, 459 transitions, 6540 flow [2024-06-21 18:32:30,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6003, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6540, PETRI_PLACES=244, PETRI_TRANSITIONS=459} [2024-06-21 18:32:30,234 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 200 predicate places. [2024-06-21 18:32:30,234 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 459 transitions, 6540 flow [2024-06-21 18:32:30,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:30,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:30,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:30,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 18:32:30,234 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:32:30,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:30,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1438240976, now seen corresponding path program 5 times [2024-06-21 18:32:30,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:30,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274397877] [2024-06-21 18:32:30,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:30,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:33,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:33,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274397877] [2024-06-21 18:32:33,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274397877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:33,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:33,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:32:33,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686657025] [2024-06-21 18:32:33,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:33,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:32:33,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:33,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:32:33,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:32:33,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:32:33,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 459 transitions, 6540 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) [2024-06-21 18:32:33,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:33,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:32:33,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:35,244 INFO L124 PetriNetUnfolderBase]: 3498/5391 cut-off events. [2024-06-21 18:32:35,244 INFO L125 PetriNetUnfolderBase]: For 546097/546125 co-relation queries the response was YES. [2024-06-21 18:32:35,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50364 conditions, 5391 events. 3498/5391 cut-off events. For 546097/546125 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29460 event pairs, 1042 based on Foata normal form. 5/5370 useless extension candidates. Maximal degree in co-relation 50252. Up to 4898 conditions per place. [2024-06-21 18:32:35,308 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 394 selfloop transitions, 94 changer transitions 0/495 dead transitions. [2024-06-21 18:32:35,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 495 transitions, 7864 flow [2024-06-21 18:32:35,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:32:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:32:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-21 18:32:35,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49127906976744184 [2024-06-21 18:32:35,310 INFO L175 Difference]: Start difference. First operand has 244 places, 459 transitions, 6540 flow. Second operand 8 states and 169 transitions. [2024-06-21 18:32:35,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 495 transitions, 7864 flow [2024-06-21 18:32:36,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 495 transitions, 7684 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-21 18:32:36,462 INFO L231 Difference]: Finished difference. Result has 246 places, 465 transitions, 6697 flow [2024-06-21 18:32:36,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6360, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6697, PETRI_PLACES=246, PETRI_TRANSITIONS=465} [2024-06-21 18:32:36,463 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 202 predicate places. [2024-06-21 18:32:36,463 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 465 transitions, 6697 flow [2024-06-21 18:32:36,463 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) [2024-06-21 18:32:36,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:36,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:36,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 18:32:36,463 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:32:36,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:36,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1085134410, now seen corresponding path program 6 times [2024-06-21 18:32:36,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:36,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810739558] [2024-06-21 18:32:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:36,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:39,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:39,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810739558] [2024-06-21 18:32:39,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810739558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:39,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:39,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:32:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919467466] [2024-06-21 18:32:39,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:39,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:32:39,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:39,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:32:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:32:39,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:32:39,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 465 transitions, 6697 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:39,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:39,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:32:39,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:41,647 INFO L124 PetriNetUnfolderBase]: 3490/5378 cut-off events. [2024-06-21 18:32:41,647 INFO L125 PetriNetUnfolderBase]: For 558857/558885 co-relation queries the response was YES. [2024-06-21 18:32:41,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50485 conditions, 5378 events. 3490/5378 cut-off events. For 558857/558885 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29399 event pairs, 1039 based on Foata normal form. 5/5357 useless extension candidates. Maximal degree in co-relation 50371. Up to 4812 conditions per place. [2024-06-21 18:32:41,705 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 375 selfloop transitions, 114 changer transitions 0/496 dead transitions. [2024-06-21 18:32:41,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 496 transitions, 7914 flow [2024-06-21 18:32:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:32:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:32:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-21 18:32:41,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2024-06-21 18:32:41,707 INFO L175 Difference]: Start difference. First operand has 246 places, 465 transitions, 6697 flow. Second operand 9 states and 173 transitions. [2024-06-21 18:32:41,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 496 transitions, 7914 flow [2024-06-21 18:32:42,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 496 transitions, 7609 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-21 18:32:42,676 INFO L231 Difference]: Finished difference. Result has 248 places, 465 transitions, 6641 flow [2024-06-21 18:32:42,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6641, PETRI_PLACES=248, PETRI_TRANSITIONS=465} [2024-06-21 18:32:42,677 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 204 predicate places. [2024-06-21 18:32:42,677 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 465 transitions, 6641 flow [2024-06-21 18:32:42,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:42,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:42,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:42,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 18:32:42,678 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:32:42,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:42,679 INFO L85 PathProgramCache]: Analyzing trace with hash 689305802, now seen corresponding path program 7 times [2024-06-21 18:32:42,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:42,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126641330] [2024-06-21 18:32:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:42,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:45,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:45,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126641330] [2024-06-21 18:32:45,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126641330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:45,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:45,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:32:45,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333181250] [2024-06-21 18:32:45,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:45,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:32:45,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:45,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:32:45,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:32:46,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:32:46,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 465 transitions, 6641 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) [2024-06-21 18:32:46,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:46,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:32:46,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:47,664 INFO L124 PetriNetUnfolderBase]: 3495/5394 cut-off events. [2024-06-21 18:32:47,665 INFO L125 PetriNetUnfolderBase]: For 549071/549105 co-relation queries the response was YES. [2024-06-21 18:32:47,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50306 conditions, 5394 events. 3495/5394 cut-off events. For 549071/549105 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 29484 event pairs, 974 based on Foata normal form. 14/5390 useless extension candidates. Maximal degree in co-relation 50191. Up to 4669 conditions per place. [2024-06-21 18:32:47,733 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 329 selfloop transitions, 165 changer transitions 0/501 dead transitions. [2024-06-21 18:32:47,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 501 transitions, 8038 flow [2024-06-21 18:32:47,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:32:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:32:47,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-21 18:32:47,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058139534883721 [2024-06-21 18:32:47,735 INFO L175 Difference]: Start difference. First operand has 248 places, 465 transitions, 6641 flow. Second operand 8 states and 174 transitions. [2024-06-21 18:32:47,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 501 transitions, 8038 flow [2024-06-21 18:32:48,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 501 transitions, 7722 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 18:32:48,961 INFO L231 Difference]: Finished difference. Result has 247 places, 468 transitions, 6742 flow [2024-06-21 18:32:48,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6325, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6742, PETRI_PLACES=247, PETRI_TRANSITIONS=468} [2024-06-21 18:32:48,962 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 203 predicate places. [2024-06-21 18:32:48,962 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 468 transitions, 6742 flow [2024-06-21 18:32:48,962 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) [2024-06-21 18:32:48,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:48,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:48,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 18:32:48,963 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:32:48,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:48,964 INFO L85 PathProgramCache]: Analyzing trace with hash 689301028, now seen corresponding path program 5 times [2024-06-21 18:32:48,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:48,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313605005] [2024-06-21 18:32:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:48,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:52,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:52,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313605005] [2024-06-21 18:32:52,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313605005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:52,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:52,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:32:52,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475834550] [2024-06-21 18:32:52,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:52,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:32:52,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:52,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:32:52,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:32:52,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:32:52,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 468 transitions, 6742 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:52,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:52,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:32:52,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:32:54,360 INFO L124 PetriNetUnfolderBase]: 3511/5412 cut-off events. [2024-06-21 18:32:54,360 INFO L125 PetriNetUnfolderBase]: For 552971/553005 co-relation queries the response was YES. [2024-06-21 18:32:54,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50889 conditions, 5412 events. 3511/5412 cut-off events. For 552971/553005 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 29522 event pairs, 970 based on Foata normal form. 16/5411 useless extension candidates. Maximal degree in co-relation 50775. Up to 4888 conditions per place. [2024-06-21 18:32:54,427 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 398 selfloop transitions, 96 changer transitions 0/501 dead transitions. [2024-06-21 18:32:54,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 501 transitions, 8075 flow [2024-06-21 18:32:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:32:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:32:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-21 18:32:54,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 18:32:54,429 INFO L175 Difference]: Start difference. First operand has 247 places, 468 transitions, 6742 flow. Second operand 9 states and 172 transitions. [2024-06-21 18:32:54,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 501 transitions, 8075 flow [2024-06-21 18:32:55,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 501 transitions, 7688 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-21 18:32:55,278 INFO L231 Difference]: Finished difference. Result has 250 places, 470 transitions, 6622 flow [2024-06-21 18:32:55,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6355, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6622, PETRI_PLACES=250, PETRI_TRANSITIONS=470} [2024-06-21 18:32:55,279 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 206 predicate places. [2024-06-21 18:32:55,279 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 470 transitions, 6622 flow [2024-06-21 18:32:55,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:55,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:32:55,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:32:55,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 18:32:55,280 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:32:55,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:32:55,280 INFO L85 PathProgramCache]: Analyzing trace with hash 689301152, now seen corresponding path program 8 times [2024-06-21 18:32:55,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:32:55,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102955761] [2024-06-21 18:32:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:32:55,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:32:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:32:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:32:58,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:32:58,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102955761] [2024-06-21 18:32:58,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102955761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:32:58,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:32:58,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:32:58,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172607559] [2024-06-21 18:32:58,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:32:58,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:32:58,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:32:58,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:32:58,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:32:58,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:32:58,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 470 transitions, 6622 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:32:58,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:32:58,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:32:58,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:00,364 INFO L124 PetriNetUnfolderBase]: 3539/5461 cut-off events. [2024-06-21 18:33:00,364 INFO L125 PetriNetUnfolderBase]: For 574706/574729 co-relation queries the response was YES. [2024-06-21 18:33:00,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51706 conditions, 5461 events. 3539/5461 cut-off events. For 574706/574729 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 29907 event pairs, 976 based on Foata normal form. 14/5458 useless extension candidates. Maximal degree in co-relation 51590. Up to 4684 conditions per place. [2024-06-21 18:33:00,428 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 332 selfloop transitions, 171 changer transitions 0/510 dead transitions. [2024-06-21 18:33:00,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 510 transitions, 8317 flow [2024-06-21 18:33:00,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:33:00,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:33:00,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-21 18:33:00,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625322997416021 [2024-06-21 18:33:00,431 INFO L175 Difference]: Start difference. First operand has 250 places, 470 transitions, 6622 flow. Second operand 9 states and 179 transitions. [2024-06-21 18:33:00,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 510 transitions, 8317 flow [2024-06-21 18:33:01,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 510 transitions, 8068 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-21 18:33:01,551 INFO L231 Difference]: Finished difference. Result has 252 places, 476 transitions, 6885 flow [2024-06-21 18:33:01,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6373, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6885, PETRI_PLACES=252, PETRI_TRANSITIONS=476} [2024-06-21 18:33:01,552 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 208 predicate places. [2024-06-21 18:33:01,552 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 476 transitions, 6885 flow [2024-06-21 18:33:01,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:01,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:01,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:01,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 18:33:01,552 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:33:01,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:01,552 INFO L85 PathProgramCache]: Analyzing trace with hash 689478968, now seen corresponding path program 4 times [2024-06-21 18:33:01,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:01,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674234797] [2024-06-21 18:33:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:01,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:04,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:04,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674234797] [2024-06-21 18:33:04,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674234797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:04,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:04,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:33:04,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595580052] [2024-06-21 18:33:04,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:04,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:33:04,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:04,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:33:04,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:33:04,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:33:04,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 476 transitions, 6885 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:04,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:04,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:33:04,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:06,545 INFO L124 PetriNetUnfolderBase]: 3561/5490 cut-off events. [2024-06-21 18:33:06,546 INFO L125 PetriNetUnfolderBase]: For 598780/598803 co-relation queries the response was YES. [2024-06-21 18:33:06,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52784 conditions, 5490 events. 3561/5490 cut-off events. For 598780/598803 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 30124 event pairs, 973 based on Foata normal form. 12/5481 useless extension candidates. Maximal degree in co-relation 52667. Up to 4491 conditions per place. [2024-06-21 18:33:06,614 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 307 selfloop transitions, 202 changer transitions 0/516 dead transitions. [2024-06-21 18:33:06,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 516 transitions, 8755 flow [2024-06-21 18:33:06,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:33:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:33:06,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-21 18:33:06,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790697674418605 [2024-06-21 18:33:06,616 INFO L175 Difference]: Start difference. First operand has 252 places, 476 transitions, 6885 flow. Second operand 10 states and 206 transitions. [2024-06-21 18:33:06,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 516 transitions, 8755 flow [2024-06-21 18:33:07,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 516 transitions, 8468 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-21 18:33:07,813 INFO L231 Difference]: Finished difference. Result has 257 places, 479 transitions, 7059 flow [2024-06-21 18:33:07,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6598, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7059, PETRI_PLACES=257, PETRI_TRANSITIONS=479} [2024-06-21 18:33:07,814 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 213 predicate places. [2024-06-21 18:33:07,814 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 479 transitions, 7059 flow [2024-06-21 18:33:07,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:07,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:07,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:07,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 18:33:07,815 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:33:07,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:07,816 INFO L85 PathProgramCache]: Analyzing trace with hash 689485478, now seen corresponding path program 5 times [2024-06-21 18:33:07,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:07,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089183871] [2024-06-21 18:33:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:07,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:10,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:10,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089183871] [2024-06-21 18:33:10,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089183871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:10,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:10,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:33:10,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271163698] [2024-06-21 18:33:10,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:10,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:33:10,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:10,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:33:10,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:33:10,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:33:10,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 479 transitions, 7059 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:10,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:10,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:33:10,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:12,662 INFO L124 PetriNetUnfolderBase]: 3553/5479 cut-off events. [2024-06-21 18:33:12,662 INFO L125 PetriNetUnfolderBase]: For 615163/615186 co-relation queries the response was YES. [2024-06-21 18:33:12,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53336 conditions, 5479 events. 3553/5479 cut-off events. For 615163/615186 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 30087 event pairs, 973 based on Foata normal form. 13/5471 useless extension candidates. Maximal degree in co-relation 53217. Up to 4483 conditions per place. [2024-06-21 18:33:12,735 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 297 selfloop transitions, 210 changer transitions 0/514 dead transitions. [2024-06-21 18:33:12,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 514 transitions, 8663 flow [2024-06-21 18:33:12,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:33:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:33:12,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-21 18:33:12,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720930232558139 [2024-06-21 18:33:12,737 INFO L175 Difference]: Start difference. First operand has 257 places, 479 transitions, 7059 flow. Second operand 10 states and 203 transitions. [2024-06-21 18:33:12,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 514 transitions, 8663 flow [2024-06-21 18:33:13,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 514 transitions, 8187 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-21 18:33:14,003 INFO L231 Difference]: Finished difference. Result has 259 places, 479 transitions, 7012 flow [2024-06-21 18:33:14,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6583, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7012, PETRI_PLACES=259, PETRI_TRANSITIONS=479} [2024-06-21 18:33:14,003 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 215 predicate places. [2024-06-21 18:33:14,003 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 479 transitions, 7012 flow [2024-06-21 18:33:14,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:14,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:14,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:14,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 18:33:14,004 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:33:14,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:14,005 INFO L85 PathProgramCache]: Analyzing trace with hash 689478782, now seen corresponding path program 9 times [2024-06-21 18:33:14,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:14,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972410083] [2024-06-21 18:33:14,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:14,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:17,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:17,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972410083] [2024-06-21 18:33:17,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972410083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:17,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:17,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:33:17,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443434001] [2024-06-21 18:33:17,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:17,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:33:17,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:17,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:33:17,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:33:17,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:33:17,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 479 transitions, 7012 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) [2024-06-21 18:33:17,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:17,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:33:17,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:19,013 INFO L124 PetriNetUnfolderBase]: 3548/5475 cut-off events. [2024-06-21 18:33:19,013 INFO L125 PetriNetUnfolderBase]: For 629688/629711 co-relation queries the response was YES. [2024-06-21 18:33:19,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53456 conditions, 5475 events. 3548/5475 cut-off events. For 629688/629711 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 29979 event pairs, 974 based on Foata normal form. 14/5471 useless extension candidates. Maximal degree in co-relation 53336. Up to 4748 conditions per place. [2024-06-21 18:33:19,082 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 332 selfloop transitions, 173 changer transitions 0/512 dead transitions. [2024-06-21 18:33:19,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 512 transitions, 8371 flow [2024-06-21 18:33:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:33:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:33:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-21 18:33:19,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502906976744186 [2024-06-21 18:33:19,084 INFO L175 Difference]: Start difference. First operand has 259 places, 479 transitions, 7012 flow. Second operand 8 states and 173 transitions. [2024-06-21 18:33:19,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 512 transitions, 8371 flow [2024-06-21 18:33:19,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 512 transitions, 7901 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 18:33:20,002 INFO L231 Difference]: Finished difference. Result has 258 places, 479 transitions, 6909 flow [2024-06-21 18:33:20,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6552, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6909, PETRI_PLACES=258, PETRI_TRANSITIONS=479} [2024-06-21 18:33:20,003 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 214 predicate places. [2024-06-21 18:33:20,003 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 479 transitions, 6909 flow [2024-06-21 18:33:20,003 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) [2024-06-21 18:33:20,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:20,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:20,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 18:33:20,004 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:33:20,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:20,005 INFO L85 PathProgramCache]: Analyzing trace with hash 710705746, now seen corresponding path program 1 times [2024-06-21 18:33:20,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:20,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158145853] [2024-06-21 18:33:20,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:20,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:21,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:21,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158145853] [2024-06-21 18:33:21,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158145853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:21,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:21,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:33:21,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30615182] [2024-06-21 18:33:21,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:21,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:33:21,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:21,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:33:21,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:33:21,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:33:21,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 479 transitions, 6909 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:21,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:21,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:33:21,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:23,294 INFO L124 PetriNetUnfolderBase]: 3632/5579 cut-off events. [2024-06-21 18:33:23,294 INFO L125 PetriNetUnfolderBase]: For 656158/656187 co-relation queries the response was YES. [2024-06-21 18:33:23,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53730 conditions, 5579 events. 3632/5579 cut-off events. For 656158/656187 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 30115 event pairs, 1136 based on Foata normal form. 19/5589 useless extension candidates. Maximal degree in co-relation 53610. Up to 5048 conditions per place. [2024-06-21 18:33:23,362 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 378 selfloop transitions, 40 changer transitions 0/503 dead transitions. [2024-06-21 18:33:23,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 503 transitions, 8029 flow [2024-06-21 18:33:23,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:33:23,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:33:23,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-21 18:33:23,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-06-21 18:33:23,363 INFO L175 Difference]: Start difference. First operand has 258 places, 479 transitions, 6909 flow. Second operand 6 states and 124 transitions. [2024-06-21 18:33:23,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 503 transitions, 8029 flow [2024-06-21 18:33:24,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 503 transitions, 7659 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 18:33:24,909 INFO L231 Difference]: Finished difference. Result has 257 places, 485 transitions, 6701 flow [2024-06-21 18:33:24,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6539, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6701, PETRI_PLACES=257, PETRI_TRANSITIONS=485} [2024-06-21 18:33:24,909 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 213 predicate places. [2024-06-21 18:33:24,909 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 485 transitions, 6701 flow [2024-06-21 18:33:24,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:24,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:24,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:24,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 18:33:24,910 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:33:24,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:24,910 INFO L85 PathProgramCache]: Analyzing trace with hash -549685316, now seen corresponding path program 6 times [2024-06-21 18:33:24,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:24,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774638400] [2024-06-21 18:33:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:24,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:27,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:27,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774638400] [2024-06-21 18:33:27,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774638400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:27,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:27,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:33:27,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240042203] [2024-06-21 18:33:27,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:27,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:33:27,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:27,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:33:27,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:33:27,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:33:27,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 485 transitions, 6701 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:27,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:27,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:33:27,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:28,921 INFO L124 PetriNetUnfolderBase]: 3631/5591 cut-off events. [2024-06-21 18:33:28,921 INFO L125 PetriNetUnfolderBase]: For 691201/691226 co-relation queries the response was YES. [2024-06-21 18:33:28,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54823 conditions, 5591 events. 3631/5591 cut-off events. For 691201/691226 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 30714 event pairs, 1254 based on Foata normal form. 8/5564 useless extension candidates. Maximal degree in co-relation 54702. Up to 5156 conditions per place. [2024-06-21 18:33:28,994 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 452 selfloop transitions, 63 changer transitions 0/524 dead transitions. [2024-06-21 18:33:28,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 524 transitions, 8053 flow [2024-06-21 18:33:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:33:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:33:28,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-21 18:33:28,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43669250645994834 [2024-06-21 18:33:28,996 INFO L175 Difference]: Start difference. First operand has 257 places, 485 transitions, 6701 flow. Second operand 9 states and 169 transitions. [2024-06-21 18:33:28,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 524 transitions, 8053 flow [2024-06-21 18:33:30,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 524 transitions, 7953 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-21 18:33:30,210 INFO L231 Difference]: Finished difference. Result has 264 places, 498 transitions, 6969 flow [2024-06-21 18:33:30,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6601, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6969, PETRI_PLACES=264, PETRI_TRANSITIONS=498} [2024-06-21 18:33:30,210 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 220 predicate places. [2024-06-21 18:33:30,211 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 498 transitions, 6969 flow [2024-06-21 18:33:30,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:30,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:30,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:30,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 18:33:30,211 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:33:30,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:30,211 INFO L85 PathProgramCache]: Analyzing trace with hash -434394146, now seen corresponding path program 7 times [2024-06-21 18:33:30,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:30,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333152813] [2024-06-21 18:33:30,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:30,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:32,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:32,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333152813] [2024-06-21 18:33:32,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333152813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:32,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:32,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:33:32,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629781704] [2024-06-21 18:33:32,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:32,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:33:32,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:32,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:33:32,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:33:32,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:33:32,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 498 transitions, 6969 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:32,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:32,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:33:32,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:34,339 INFO L124 PetriNetUnfolderBase]: 3772/5810 cut-off events. [2024-06-21 18:33:34,339 INFO L125 PetriNetUnfolderBase]: For 732310/732337 co-relation queries the response was YES. [2024-06-21 18:33:34,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57753 conditions, 5810 events. 3772/5810 cut-off events. For 732310/732337 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 32138 event pairs, 1263 based on Foata normal form. 6/5776 useless extension candidates. Maximal degree in co-relation 57629. Up to 4789 conditions per place. [2024-06-21 18:33:34,420 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 394 selfloop transitions, 169 changer transitions 0/572 dead transitions. [2024-06-21 18:33:34,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 572 transitions, 9570 flow [2024-06-21 18:33:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:33:34,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:33:34,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-21 18:33:34,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48320413436692505 [2024-06-21 18:33:34,422 INFO L175 Difference]: Start difference. First operand has 264 places, 498 transitions, 6969 flow. Second operand 9 states and 187 transitions. [2024-06-21 18:33:34,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 572 transitions, 9570 flow [2024-06-21 18:33:35,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 572 transitions, 9353 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-21 18:33:35,726 INFO L231 Difference]: Finished difference. Result has 267 places, 521 transitions, 7654 flow [2024-06-21 18:33:35,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6752, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7654, PETRI_PLACES=267, PETRI_TRANSITIONS=521} [2024-06-21 18:33:35,726 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 223 predicate places. [2024-06-21 18:33:35,726 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 521 transitions, 7654 flow [2024-06-21 18:33:35,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:35,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:35,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:35,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 18:33:35,727 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:33:35,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash 266646930, now seen corresponding path program 8 times [2024-06-21 18:33:35,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:35,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061261855] [2024-06-21 18:33:35,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:35,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:37,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:37,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061261855] [2024-06-21 18:33:37,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061261855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:37,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:37,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:33:37,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898023047] [2024-06-21 18:33:37,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:37,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:33:37,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:37,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:33:37,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:33:38,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:33:38,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 521 transitions, 7654 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:38,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:38,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:33:38,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:40,006 INFO L124 PetriNetUnfolderBase]: 3800/5852 cut-off events. [2024-06-21 18:33:40,006 INFO L125 PetriNetUnfolderBase]: For 758656/758683 co-relation queries the response was YES. [2024-06-21 18:33:40,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59254 conditions, 5852 events. 3800/5852 cut-off events. For 758656/758683 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 32493 event pairs, 1264 based on Foata normal form. 6/5817 useless extension candidates. Maximal degree in co-relation 59128. Up to 4811 conditions per place. [2024-06-21 18:33:40,079 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 393 selfloop transitions, 180 changer transitions 0/582 dead transitions. [2024-06-21 18:33:40,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 582 transitions, 10058 flow [2024-06-21 18:33:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:33:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:33:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-21 18:33:40,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-06-21 18:33:40,081 INFO L175 Difference]: Start difference. First operand has 267 places, 521 transitions, 7654 flow. Second operand 9 states and 186 transitions. [2024-06-21 18:33:40,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 582 transitions, 10058 flow [2024-06-21 18:33:41,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 582 transitions, 9736 flow, removed 117 selfloop flow, removed 4 redundant places. [2024-06-21 18:33:41,161 INFO L231 Difference]: Finished difference. Result has 272 places, 528 transitions, 7923 flow [2024-06-21 18:33:41,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7382, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7923, PETRI_PLACES=272, PETRI_TRANSITIONS=528} [2024-06-21 18:33:41,162 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 228 predicate places. [2024-06-21 18:33:41,162 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 528 transitions, 7923 flow [2024-06-21 18:33:41,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:41,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:41,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:41,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 18:33:41,162 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:33:41,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:41,163 INFO L85 PathProgramCache]: Analyzing trace with hash 266653440, now seen corresponding path program 9 times [2024-06-21 18:33:41,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:41,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008793719] [2024-06-21 18:33:41,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:41,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:43,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:43,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008793719] [2024-06-21 18:33:43,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008793719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:43,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:43,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:33:43,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177273425] [2024-06-21 18:33:43,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:43,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:33:43,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:43,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:33:43,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:33:43,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:33:43,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 528 transitions, 7923 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:43,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:43,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:33:43,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:44,981 INFO L124 PetriNetUnfolderBase]: 3787/5834 cut-off events. [2024-06-21 18:33:44,981 INFO L125 PetriNetUnfolderBase]: For 768549/768576 co-relation queries the response was YES. [2024-06-21 18:33:45,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59374 conditions, 5834 events. 3787/5834 cut-off events. For 768549/768576 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 32302 event pairs, 1262 based on Foata normal form. 5/5798 useless extension candidates. Maximal degree in co-relation 59246. Up to 4801 conditions per place. [2024-06-21 18:33:45,061 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 379 selfloop transitions, 187 changer transitions 0/575 dead transitions. [2024-06-21 18:33:45,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 575 transitions, 9754 flow [2024-06-21 18:33:45,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:33:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:33:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-21 18:33:45,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702842377260982 [2024-06-21 18:33:45,063 INFO L175 Difference]: Start difference. First operand has 272 places, 528 transitions, 7923 flow. Second operand 9 states and 182 transitions. [2024-06-21 18:33:45,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 575 transitions, 9754 flow [2024-06-21 18:33:46,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 575 transitions, 9295 flow, removed 77 selfloop flow, removed 6 redundant places. [2024-06-21 18:33:46,185 INFO L231 Difference]: Finished difference. Result has 275 places, 528 transitions, 7855 flow [2024-06-21 18:33:46,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7464, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7855, PETRI_PLACES=275, PETRI_TRANSITIONS=528} [2024-06-21 18:33:46,185 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 231 predicate places. [2024-06-21 18:33:46,185 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 528 transitions, 7855 flow [2024-06-21 18:33:46,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:46,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:46,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:46,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 18:33:46,186 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:33:46,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:46,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1476279526, now seen corresponding path program 1 times [2024-06-21 18:33:46,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:46,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971188949] [2024-06-21 18:33:46,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:46,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:47,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:47,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971188949] [2024-06-21 18:33:47,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971188949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:47,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:47,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:33:47,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491789818] [2024-06-21 18:33:47,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:47,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:33:47,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:47,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:33:47,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:33:48,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:33:48,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 528 transitions, 7855 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:48,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:48,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:33:48,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:49,571 INFO L124 PetriNetUnfolderBase]: 3928/6017 cut-off events. [2024-06-21 18:33:49,571 INFO L125 PetriNetUnfolderBase]: For 799653/799733 co-relation queries the response was YES. [2024-06-21 18:33:49,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60114 conditions, 6017 events. 3928/6017 cut-off events. For 799653/799733 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 33044 event pairs, 1464 based on Foata normal form. 34/5996 useless extension candidates. Maximal degree in co-relation 59985. Up to 5452 conditions per place. [2024-06-21 18:33:49,658 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 435 selfloop transitions, 38 changer transitions 0/558 dead transitions. [2024-06-21 18:33:49,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 558 transitions, 9254 flow [2024-06-21 18:33:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:33:49,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:33:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-21 18:33:49,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-21 18:33:49,659 INFO L175 Difference]: Start difference. First operand has 275 places, 528 transitions, 7855 flow. Second operand 7 states and 136 transitions. [2024-06-21 18:33:49,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 558 transitions, 9254 flow [2024-06-21 18:33:51,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 558 transitions, 8782 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-21 18:33:51,310 INFO L231 Difference]: Finished difference. Result has 273 places, 540 transitions, 7616 flow [2024-06-21 18:33:51,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7383, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7616, PETRI_PLACES=273, PETRI_TRANSITIONS=540} [2024-06-21 18:33:51,311 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 229 predicate places. [2024-06-21 18:33:51,311 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 540 transitions, 7616 flow [2024-06-21 18:33:51,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:51,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:51,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:51,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 18:33:51,312 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:33:51,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:51,312 INFO L85 PathProgramCache]: Analyzing trace with hash 90925378, now seen corresponding path program 2 times [2024-06-21 18:33:51,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:51,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217279776] [2024-06-21 18:33:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:51,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:52,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:52,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217279776] [2024-06-21 18:33:52,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217279776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:52,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:52,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:33:52,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150314407] [2024-06-21 18:33:52,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:52,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:33:52,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:52,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:33:52,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:33:53,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-21 18:33:53,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 540 transitions, 7616 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:53,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:53,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-21 18:33:53,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:54,508 INFO L124 PetriNetUnfolderBase]: 4094/6185 cut-off events. [2024-06-21 18:33:54,508 INFO L125 PetriNetUnfolderBase]: For 805146/805205 co-relation queries the response was YES. [2024-06-21 18:33:54,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61410 conditions, 6185 events. 4094/6185 cut-off events. For 805146/805205 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 33206 event pairs, 1534 based on Foata normal form. 22/6166 useless extension candidates. Maximal degree in co-relation 61279. Up to 5867 conditions per place. [2024-06-21 18:33:54,599 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 482 selfloop transitions, 31 changer transitions 0/552 dead transitions. [2024-06-21 18:33:54,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 552 transitions, 8830 flow [2024-06-21 18:33:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:33:54,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:33:54,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-21 18:33:54,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-21 18:33:54,600 INFO L175 Difference]: Start difference. First operand has 273 places, 540 transitions, 7616 flow. Second operand 6 states and 110 transitions. [2024-06-21 18:33:54,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 552 transitions, 8830 flow [2024-06-21 18:33:56,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 552 transitions, 8763 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-21 18:33:56,135 INFO L231 Difference]: Finished difference. Result has 277 places, 540 transitions, 7624 flow [2024-06-21 18:33:56,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7549, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7624, PETRI_PLACES=277, PETRI_TRANSITIONS=540} [2024-06-21 18:33:56,135 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 233 predicate places. [2024-06-21 18:33:56,136 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 540 transitions, 7624 flow [2024-06-21 18:33:56,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:56,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:33:56,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:33:56,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 18:33:56,136 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:33:56,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:33:56,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1621392310, now seen corresponding path program 10 times [2024-06-21 18:33:56,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:33:56,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050902447] [2024-06-21 18:33:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:33:56,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:33:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:33:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:33:57,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:33:57,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050902447] [2024-06-21 18:33:57,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050902447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:33:57,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:33:57,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:33:57,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900441754] [2024-06-21 18:33:57,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:33:57,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:33:57,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:33:57,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:33:57,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:33:58,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:33:58,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 540 transitions, 7624 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:33:58,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:33:58,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:33:58,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:33:59,894 INFO L124 PetriNetUnfolderBase]: 4002/6157 cut-off events. [2024-06-21 18:33:59,894 INFO L125 PetriNetUnfolderBase]: For 873015/873040 co-relation queries the response was YES. [2024-06-21 18:33:59,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63802 conditions, 6157 events. 4002/6157 cut-off events. For 873015/873040 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 34439 event pairs, 1303 based on Foata normal form. 5/6123 useless extension candidates. Maximal degree in co-relation 63669. Up to 5541 conditions per place. [2024-06-21 18:33:59,979 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 536 selfloop transitions, 61 changer transitions 0/608 dead transitions. [2024-06-21 18:33:59,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 608 transitions, 10444 flow [2024-06-21 18:33:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:33:59,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:33:59,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-21 18:33:59,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573643410852713 [2024-06-21 18:33:59,981 INFO L175 Difference]: Start difference. First operand has 277 places, 540 transitions, 7624 flow. Second operand 9 states and 177 transitions. [2024-06-21 18:33:59,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 608 transitions, 10444 flow [2024-06-21 18:34:01,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 608 transitions, 10398 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-21 18:34:01,378 INFO L231 Difference]: Finished difference. Result has 282 places, 561 transitions, 8352 flow [2024-06-21 18:34:01,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7578, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8352, PETRI_PLACES=282, PETRI_TRANSITIONS=561} [2024-06-21 18:34:01,379 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 238 predicate places. [2024-06-21 18:34:01,379 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 561 transitions, 8352 flow [2024-06-21 18:34:01,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:01,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:01,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:01,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 18:34:01,379 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:34:01,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:01,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1080753226, now seen corresponding path program 10 times [2024-06-21 18:34:01,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:01,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006615550] [2024-06-21 18:34:01,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:01,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:03,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:03,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:03,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006615550] [2024-06-21 18:34:03,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006615550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:03,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:03,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:34:03,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290457860] [2024-06-21 18:34:03,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:03,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:34:03,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:03,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:34:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:34:03,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:34:03,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 561 transitions, 8352 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:03,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:03,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:34:03,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:05,620 INFO L124 PetriNetUnfolderBase]: 4011/6169 cut-off events. [2024-06-21 18:34:05,620 INFO L125 PetriNetUnfolderBase]: For 894744/894773 co-relation queries the response was YES. [2024-06-21 18:34:05,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64558 conditions, 6169 events. 4011/6169 cut-off events. For 894744/894773 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 34568 event pairs, 1307 based on Foata normal form. 2/6125 useless extension candidates. Maximal degree in co-relation 64424. Up to 5765 conditions per place. [2024-06-21 18:34:05,704 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 551 selfloop transitions, 28 changer transitions 0/590 dead transitions. [2024-06-21 18:34:05,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 590 transitions, 9808 flow [2024-06-21 18:34:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:34:05,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:34:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-21 18:34:05,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-21 18:34:05,706 INFO L175 Difference]: Start difference. First operand has 282 places, 561 transitions, 8352 flow. Second operand 9 states and 166 transitions. [2024-06-21 18:34:05,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 590 transitions, 9808 flow [2024-06-21 18:34:07,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 590 transitions, 9545 flow, removed 121 selfloop flow, removed 4 redundant places. [2024-06-21 18:34:07,109 INFO L231 Difference]: Finished difference. Result has 287 places, 564 transitions, 8246 flow [2024-06-21 18:34:07,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8089, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8246, PETRI_PLACES=287, PETRI_TRANSITIONS=564} [2024-06-21 18:34:07,110 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 243 predicate places. [2024-06-21 18:34:07,110 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 564 transitions, 8246 flow [2024-06-21 18:34:07,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:07,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:07,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:07,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 18:34:07,111 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:34:07,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:07,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1308827170, now seen corresponding path program 11 times [2024-06-21 18:34:07,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:07,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268305762] [2024-06-21 18:34:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:07,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:08,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:08,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268305762] [2024-06-21 18:34:08,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268305762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:08,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:08,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:34:08,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281490620] [2024-06-21 18:34:08,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:08,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:34:08,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:08,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:34:08,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:34:09,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:34:09,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 564 transitions, 8246 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:09,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:09,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:34:09,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:11,230 INFO L124 PetriNetUnfolderBase]: 4039/6208 cut-off events. [2024-06-21 18:34:11,230 INFO L125 PetriNetUnfolderBase]: For 924139/924169 co-relation queries the response was YES. [2024-06-21 18:34:11,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65298 conditions, 6208 events. 4039/6208 cut-off events. For 924139/924169 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 34750 event pairs, 1305 based on Foata normal form. 6/6169 useless extension candidates. Maximal degree in co-relation 65162. Up to 5423 conditions per place. [2024-06-21 18:34:11,321 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 493 selfloop transitions, 108 changer transitions 0/612 dead transitions. [2024-06-21 18:34:11,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 612 transitions, 10373 flow [2024-06-21 18:34:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:34:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:34:11,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-21 18:34:11,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573643410852713 [2024-06-21 18:34:11,323 INFO L175 Difference]: Start difference. First operand has 287 places, 564 transitions, 8246 flow. Second operand 9 states and 177 transitions. [2024-06-21 18:34:11,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 612 transitions, 10373 flow [2024-06-21 18:34:12,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 612 transitions, 10242 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-21 18:34:12,969 INFO L231 Difference]: Finished difference. Result has 289 places, 571 transitions, 8566 flow [2024-06-21 18:34:12,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8115, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8566, PETRI_PLACES=289, PETRI_TRANSITIONS=571} [2024-06-21 18:34:12,969 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 245 predicate places. [2024-06-21 18:34:12,969 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 571 transitions, 8566 flow [2024-06-21 18:34:12,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:12,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:12,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:12,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 18:34:12,970 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:34:12,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:12,970 INFO L85 PathProgramCache]: Analyzing trace with hash 392028586, now seen corresponding path program 11 times [2024-06-21 18:34:12,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:12,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284254698] [2024-06-21 18:34:12,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:12,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:15,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:15,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284254698] [2024-06-21 18:34:15,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284254698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:15,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:15,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:15,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662768942] [2024-06-21 18:34:15,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:15,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:15,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:15,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:15,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:15,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:34:15,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 571 transitions, 8566 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:15,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:15,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:34:15,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:17,536 INFO L124 PetriNetUnfolderBase]: 4050/6227 cut-off events. [2024-06-21 18:34:17,536 INFO L125 PetriNetUnfolderBase]: For 942976/943006 co-relation queries the response was YES. [2024-06-21 18:34:17,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66106 conditions, 6227 events. 4050/6227 cut-off events. For 942976/943006 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 34878 event pairs, 1308 based on Foata normal form. 2/6181 useless extension candidates. Maximal degree in co-relation 65969. Up to 5754 conditions per place. [2024-06-21 18:34:17,621 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 536 selfloop transitions, 55 changer transitions 0/602 dead transitions. [2024-06-21 18:34:17,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 602 transitions, 10083 flow [2024-06-21 18:34:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:34:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:34:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-21 18:34:17,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41627906976744183 [2024-06-21 18:34:17,623 INFO L175 Difference]: Start difference. First operand has 289 places, 571 transitions, 8566 flow. Second operand 10 states and 179 transitions. [2024-06-21 18:34:17,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 602 transitions, 10083 flow [2024-06-21 18:34:19,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 602 transitions, 9618 flow, removed 114 selfloop flow, removed 7 redundant places. [2024-06-21 18:34:19,628 INFO L231 Difference]: Finished difference. Result has 292 places, 574 transitions, 8318 flow [2024-06-21 18:34:19,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8101, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8318, PETRI_PLACES=292, PETRI_TRANSITIONS=574} [2024-06-21 18:34:19,629 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 248 predicate places. [2024-06-21 18:34:19,629 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 574 transitions, 8318 flow [2024-06-21 18:34:19,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:19,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:19,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:19,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 18:34:19,629 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:34:19,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:19,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1302398080, now seen corresponding path program 12 times [2024-06-21 18:34:19,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:19,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982809983] [2024-06-21 18:34:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:19,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:21,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:21,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982809983] [2024-06-21 18:34:21,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982809983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:21,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:21,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:34:21,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28785942] [2024-06-21 18:34:21,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:21,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:34:21,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:21,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:34:21,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:34:21,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:34:21,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 574 transitions, 8318 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:21,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:21,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:34:21,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:23,848 INFO L124 PetriNetUnfolderBase]: 4042/6222 cut-off events. [2024-06-21 18:34:23,848 INFO L125 PetriNetUnfolderBase]: For 963110/963143 co-relation queries the response was YES. [2024-06-21 18:34:23,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65869 conditions, 6222 events. 4042/6222 cut-off events. For 963110/963143 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 34930 event pairs, 1303 based on Foata normal form. 6/6184 useless extension candidates. Maximal degree in co-relation 65731. Up to 5607 conditions per place. [2024-06-21 18:34:23,927 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 536 selfloop transitions, 66 changer transitions 0/613 dead transitions. [2024-06-21 18:34:23,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 613 transitions, 10202 flow [2024-06-21 18:34:23,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:34:23,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:34:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-21 18:34:23,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-21 18:34:23,933 INFO L175 Difference]: Start difference. First operand has 292 places, 574 transitions, 8318 flow. Second operand 9 states and 174 transitions. [2024-06-21 18:34:23,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 613 transitions, 10202 flow [2024-06-21 18:34:25,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 613 transitions, 9953 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-21 18:34:25,215 INFO L231 Difference]: Finished difference. Result has 293 places, 574 transitions, 8214 flow [2024-06-21 18:34:25,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8069, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8214, PETRI_PLACES=293, PETRI_TRANSITIONS=574} [2024-06-21 18:34:25,216 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 249 predicate places. [2024-06-21 18:34:25,216 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 574 transitions, 8214 flow [2024-06-21 18:34:25,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:25,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:25,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:25,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 18:34:25,216 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:34:25,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:25,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1072472320, now seen corresponding path program 13 times [2024-06-21 18:34:25,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:25,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898227064] [2024-06-21 18:34:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:25,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:26,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:26,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898227064] [2024-06-21 18:34:26,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898227064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:26,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:26,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:34:26,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838568443] [2024-06-21 18:34:26,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:26,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:34:26,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:26,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:34:26,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:34:27,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:34:27,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 574 transitions, 8214 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:27,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:27,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:34:27,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:28,871 INFO L124 PetriNetUnfolderBase]: 4007/6164 cut-off events. [2024-06-21 18:34:28,872 INFO L125 PetriNetUnfolderBase]: For 970329/970362 co-relation queries the response was YES. [2024-06-21 18:34:28,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65004 conditions, 6164 events. 4007/6164 cut-off events. For 970329/970362 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 34466 event pairs, 1301 based on Foata normal form. 8/6125 useless extension candidates. Maximal degree in co-relation 64865. Up to 5681 conditions per place. [2024-06-21 18:34:28,968 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 559 selfloop transitions, 36 changer transitions 0/606 dead transitions. [2024-06-21 18:34:28,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 606 transitions, 9722 flow [2024-06-21 18:34:28,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:34:28,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:34:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-21 18:34:28,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43410852713178294 [2024-06-21 18:34:28,970 INFO L175 Difference]: Start difference. First operand has 293 places, 574 transitions, 8214 flow. Second operand 9 states and 168 transitions. [2024-06-21 18:34:28,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 606 transitions, 9722 flow [2024-06-21 18:34:30,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 606 transitions, 9553 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-21 18:34:30,622 INFO L231 Difference]: Finished difference. Result has 295 places, 574 transitions, 8133 flow [2024-06-21 18:34:30,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8045, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8133, PETRI_PLACES=295, PETRI_TRANSITIONS=574} [2024-06-21 18:34:30,622 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 251 predicate places. [2024-06-21 18:34:30,622 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 574 transitions, 8133 flow [2024-06-21 18:34:30,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:30,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:30,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:30,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 18:34:30,623 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:34:30,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:30,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1308832130, now seen corresponding path program 6 times [2024-06-21 18:34:30,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:30,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81172693] [2024-06-21 18:34:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:30,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:33,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:33,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81172693] [2024-06-21 18:34:33,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81172693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:33,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:33,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:33,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074682966] [2024-06-21 18:34:33,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:33,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:33,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:33,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:33,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:33,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:34:33,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 574 transitions, 8133 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:33,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:33,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:34:33,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:35,166 INFO L124 PetriNetUnfolderBase]: 3843/5991 cut-off events. [2024-06-21 18:34:35,166 INFO L125 PetriNetUnfolderBase]: For 994460/994501 co-relation queries the response was YES. [2024-06-21 18:34:35,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63920 conditions, 5991 events. 3843/5991 cut-off events. For 994460/994501 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 34198 event pairs, 1231 based on Foata normal form. 5/5928 useless extension candidates. Maximal degree in co-relation 63780. Up to 5386 conditions per place. [2024-06-21 18:34:35,256 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 517 selfloop transitions, 27 changer transitions 0/603 dead transitions. [2024-06-21 18:34:35,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 603 transitions, 9512 flow [2024-06-21 18:34:35,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:34:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:34:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-21 18:34:35,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-21 18:34:35,257 INFO L175 Difference]: Start difference. First operand has 295 places, 574 transitions, 8133 flow. Second operand 10 states and 185 transitions. [2024-06-21 18:34:35,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 603 transitions, 9512 flow [2024-06-21 18:34:36,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 603 transitions, 9382 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 18:34:36,724 INFO L231 Difference]: Finished difference. Result has 296 places, 576 transitions, 8144 flow [2024-06-21 18:34:36,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8003, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8144, PETRI_PLACES=296, PETRI_TRANSITIONS=576} [2024-06-21 18:34:36,725 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 252 predicate places. [2024-06-21 18:34:36,725 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 576 transitions, 8144 flow [2024-06-21 18:34:36,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:36,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:36,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:36,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 18:34:36,726 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:34:36,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:36,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1308832006, now seen corresponding path program 12 times [2024-06-21 18:34:36,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:36,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403458537] [2024-06-21 18:34:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:36,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:39,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:39,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403458537] [2024-06-21 18:34:39,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403458537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:39,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:39,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:34:39,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281142233] [2024-06-21 18:34:39,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:39,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:34:39,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:39,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:34:39,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:34:39,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:34:39,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 576 transitions, 8144 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:39,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:39,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:34:39,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:41,237 INFO L124 PetriNetUnfolderBase]: 4010/6168 cut-off events. [2024-06-21 18:34:41,237 INFO L125 PetriNetUnfolderBase]: For 997016/997033 co-relation queries the response was YES. [2024-06-21 18:34:41,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65466 conditions, 6168 events. 4010/6168 cut-off events. For 997016/997033 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 34525 event pairs, 1302 based on Foata normal form. 2/6123 useless extension candidates. Maximal degree in co-relation 65325. Up to 5648 conditions per place. [2024-06-21 18:34:41,327 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 536 selfloop transitions, 65 changer transitions 0/612 dead transitions. [2024-06-21 18:34:41,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 612 transitions, 10079 flow [2024-06-21 18:34:41,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:34:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:34:41,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-21 18:34:41,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 18:34:41,329 INFO L175 Difference]: Start difference. First operand has 296 places, 576 transitions, 8144 flow. Second operand 9 states and 172 transitions. [2024-06-21 18:34:41,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 612 transitions, 10079 flow [2024-06-21 18:34:43,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 612 transitions, 9956 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-21 18:34:43,416 INFO L231 Difference]: Finished difference. Result has 297 places, 582 transitions, 8365 flow [2024-06-21 18:34:43,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8021, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8365, PETRI_PLACES=297, PETRI_TRANSITIONS=582} [2024-06-21 18:34:43,417 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 253 predicate places. [2024-06-21 18:34:43,417 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 582 transitions, 8365 flow [2024-06-21 18:34:43,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:43,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:43,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:43,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 18:34:43,417 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:34:43,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:43,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1308647680, now seen corresponding path program 14 times [2024-06-21 18:34:43,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:43,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927736711] [2024-06-21 18:34:43,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:43,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:45,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:45,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927736711] [2024-06-21 18:34:45,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927736711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:45,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:45,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:34:45,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628998993] [2024-06-21 18:34:45,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:45,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:34:45,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:45,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:34:45,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:34:45,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:34:45,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 582 transitions, 8365 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:45,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:45,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:34:45,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:47,587 INFO L124 PetriNetUnfolderBase]: 4052/6237 cut-off events. [2024-06-21 18:34:47,588 INFO L125 PetriNetUnfolderBase]: For 1038661/1038678 co-relation queries the response was YES. [2024-06-21 18:34:47,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66830 conditions, 6237 events. 4052/6237 cut-off events. For 1038661/1038678 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 35016 event pairs, 1301 based on Foata normal form. 5/6198 useless extension candidates. Maximal degree in co-relation 66688. Up to 5442 conditions per place. [2024-06-21 18:34:47,669 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 519 selfloop transitions, 107 changer transitions 0/637 dead transitions. [2024-06-21 18:34:47,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 637 transitions, 10616 flow [2024-06-21 18:34:47,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:34:47,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:34:47,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-21 18:34:47,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-21 18:34:47,670 INFO L175 Difference]: Start difference. First operand has 297 places, 582 transitions, 8365 flow. Second operand 9 states and 178 transitions. [2024-06-21 18:34:47,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 637 transitions, 10616 flow [2024-06-21 18:34:49,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 637 transitions, 10419 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-21 18:34:49,586 INFO L231 Difference]: Finished difference. Result has 301 places, 589 transitions, 8568 flow [2024-06-21 18:34:49,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8168, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8568, PETRI_PLACES=301, PETRI_TRANSITIONS=589} [2024-06-21 18:34:49,587 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 257 predicate places. [2024-06-21 18:34:49,587 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 589 transitions, 8568 flow [2024-06-21 18:34:49,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:49,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:49,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:49,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 18:34:49,587 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:34:49,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:49,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1393484650, now seen corresponding path program 15 times [2024-06-21 18:34:49,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:49,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515832206] [2024-06-21 18:34:49,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:49,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:51,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:51,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515832206] [2024-06-21 18:34:51,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515832206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:51,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:51,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:34:51,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57152714] [2024-06-21 18:34:51,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:51,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:34:51,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:51,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:34:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:34:51,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:34:51,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 589 transitions, 8568 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:51,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:51,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:34:51,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:34:53,497 INFO L124 PetriNetUnfolderBase]: 4032/6208 cut-off events. [2024-06-21 18:34:53,497 INFO L125 PetriNetUnfolderBase]: For 1050176/1050193 co-relation queries the response was YES. [2024-06-21 18:34:53,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66569 conditions, 6208 events. 4032/6208 cut-off events. For 1050176/1050193 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 34795 event pairs, 1299 based on Foata normal form. 6/6170 useless extension candidates. Maximal degree in co-relation 66425. Up to 5422 conditions per place. [2024-06-21 18:34:53,589 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 524 selfloop transitions, 105 changer transitions 0/640 dead transitions. [2024-06-21 18:34:53,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 640 transitions, 10473 flow [2024-06-21 18:34:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:34:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:34:53,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-21 18:34:53,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-21 18:34:53,590 INFO L175 Difference]: Start difference. First operand has 301 places, 589 transitions, 8568 flow. Second operand 9 states and 178 transitions. [2024-06-21 18:34:53,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 640 transitions, 10473 flow [2024-06-21 18:34:55,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 640 transitions, 9893 flow, removed 178 selfloop flow, removed 7 redundant places. [2024-06-21 18:34:55,725 INFO L231 Difference]: Finished difference. Result has 303 places, 589 transitions, 8243 flow [2024-06-21 18:34:55,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8020, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8243, PETRI_PLACES=303, PETRI_TRANSITIONS=589} [2024-06-21 18:34:55,725 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 259 predicate places. [2024-06-21 18:34:55,726 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 589 transitions, 8243 flow [2024-06-21 18:34:55,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:55,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:34:55,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:34:55,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 18:34:55,726 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:34:55,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:34:55,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1393484464, now seen corresponding path program 13 times [2024-06-21 18:34:55,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:34:55,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479272513] [2024-06-21 18:34:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:34:55,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:34:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:34:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:34:57,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:34:57,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479272513] [2024-06-21 18:34:57,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479272513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:34:57,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:34:57,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:34:57,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740275667] [2024-06-21 18:34:57,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:34:57,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:34:57,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:34:57,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:34:57,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:34:58,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:34:58,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 589 transitions, 8243 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:34:58,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:34:58,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:34:58,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:00,035 INFO L124 PetriNetUnfolderBase]: 4027/6201 cut-off events. [2024-06-21 18:35:00,035 INFO L125 PetriNetUnfolderBase]: For 1056495/1056512 co-relation queries the response was YES. [2024-06-21 18:35:00,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65950 conditions, 6201 events. 4027/6201 cut-off events. For 1056495/1056512 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 34826 event pairs, 1301 based on Foata normal form. 2/6156 useless extension candidates. Maximal degree in co-relation 65806. Up to 5720 conditions per place. [2024-06-21 18:35:00,128 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 555 selfloop transitions, 53 changer transitions 0/619 dead transitions. [2024-06-21 18:35:00,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 619 transitions, 9740 flow [2024-06-21 18:35:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:35:00,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:35:00,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-21 18:35:00,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-21 18:35:00,130 INFO L175 Difference]: Start difference. First operand has 303 places, 589 transitions, 8243 flow. Second operand 10 states and 180 transitions. [2024-06-21 18:35:00,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 619 transitions, 9740 flow [2024-06-21 18:35:02,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 619 transitions, 9356 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-21 18:35:02,379 INFO L231 Difference]: Finished difference. Result has 304 places, 589 transitions, 7974 flow [2024-06-21 18:35:02,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7859, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7974, PETRI_PLACES=304, PETRI_TRANSITIONS=589} [2024-06-21 18:35:02,380 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 260 predicate places. [2024-06-21 18:35:02,380 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 589 transitions, 7974 flow [2024-06-21 18:35:02,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:02,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:02,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:02,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 18:35:02,381 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:35:02,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:02,381 INFO L85 PathProgramCache]: Analyzing trace with hash 104257858, now seen corresponding path program 3 times [2024-06-21 18:35:02,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:02,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077401301] [2024-06-21 18:35:02,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:02,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:03,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:03,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077401301] [2024-06-21 18:35:03,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077401301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:03,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:03,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:35:03,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128053632] [2024-06-21 18:35:03,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:03,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:35:03,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:03,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:35:03,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:35:03,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-21 18:35:03,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 589 transitions, 7974 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:03,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:03,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-21 18:35:03,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:05,707 INFO L124 PetriNetUnfolderBase]: 4304/6495 cut-off events. [2024-06-21 18:35:05,707 INFO L125 PetriNetUnfolderBase]: For 1058691/1058756 co-relation queries the response was YES. [2024-06-21 18:35:05,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66700 conditions, 6495 events. 4304/6495 cut-off events. For 1058691/1058756 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 35233 event pairs, 1553 based on Foata normal form. 14/6453 useless extension candidates. Maximal degree in co-relation 66555. Up to 6202 conditions per place. [2024-06-21 18:35:05,794 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 545 selfloop transitions, 13 changer transitions 0/597 dead transitions. [2024-06-21 18:35:05,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 597 transitions, 9138 flow [2024-06-21 18:35:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:35:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:35:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-21 18:35:05,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3992248062015504 [2024-06-21 18:35:05,796 INFO L175 Difference]: Start difference. First operand has 304 places, 589 transitions, 7974 flow. Second operand 6 states and 103 transitions. [2024-06-21 18:35:05,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 597 transitions, 9138 flow [2024-06-21 18:35:08,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 597 transitions, 8987 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 18:35:08,232 INFO L231 Difference]: Finished difference. Result has 301 places, 589 transitions, 7855 flow [2024-06-21 18:35:08,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7823, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7855, PETRI_PLACES=301, PETRI_TRANSITIONS=589} [2024-06-21 18:35:08,233 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 257 predicate places. [2024-06-21 18:35:08,233 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 589 transitions, 7855 flow [2024-06-21 18:35:08,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:08,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:08,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:08,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 18:35:08,233 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:35:08,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash 96645250, now seen corresponding path program 1 times [2024-06-21 18:35:08,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:08,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371097434] [2024-06-21 18:35:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:08,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:10,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:10,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371097434] [2024-06-21 18:35:10,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371097434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:10,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:10,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:35:10,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145118724] [2024-06-21 18:35:10,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:10,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:35:10,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:10,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:35:10,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:35:10,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-21 18:35:10,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 589 transitions, 7855 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:10,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:10,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-21 18:35:10,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:12,400 INFO L124 PetriNetUnfolderBase]: 4390/6624 cut-off events. [2024-06-21 18:35:12,401 INFO L125 PetriNetUnfolderBase]: For 1079953/1079958 co-relation queries the response was YES. [2024-06-21 18:35:12,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67209 conditions, 6624 events. 4390/6624 cut-off events. For 1079953/1079958 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 35661 event pairs, 1541 based on Foata normal form. 2/6612 useless extension candidates. Maximal degree in co-relation 67063. Up to 6282 conditions per place. [2024-06-21 18:35:12,501 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 536 selfloop transitions, 18 changer transitions 0/607 dead transitions. [2024-06-21 18:35:12,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 607 transitions, 9287 flow [2024-06-21 18:35:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:35:12,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:35:12,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-21 18:35:12,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42248062015503873 [2024-06-21 18:35:12,502 INFO L175 Difference]: Start difference. First operand has 301 places, 589 transitions, 7855 flow. Second operand 6 states and 109 transitions. [2024-06-21 18:35:12,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 607 transitions, 9287 flow [2024-06-21 18:35:15,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 607 transitions, 9235 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 18:35:15,360 INFO L231 Difference]: Finished difference. Result has 302 places, 595 transitions, 7937 flow [2024-06-21 18:35:15,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7803, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7937, PETRI_PLACES=302, PETRI_TRANSITIONS=595} [2024-06-21 18:35:15,360 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 258 predicate places. [2024-06-21 18:35:15,360 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 595 transitions, 7937 flow [2024-06-21 18:35:15,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:15,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:15,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:15,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 18:35:15,361 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:35:15,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:15,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1629974350, now seen corresponding path program 1 times [2024-06-21 18:35:15,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:15,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756701755] [2024-06-21 18:35:15,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:15,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:17,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:17,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756701755] [2024-06-21 18:35:17,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756701755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:17,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:17,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:35:17,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183380283] [2024-06-21 18:35:17,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:17,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:35:17,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:17,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:35:17,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:35:18,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-21 18:35:18,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 595 transitions, 7937 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-21 18:35:18,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:18,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-21 18:35:18,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:20,214 INFO L124 PetriNetUnfolderBase]: 4378/6605 cut-off events. [2024-06-21 18:35:20,214 INFO L125 PetriNetUnfolderBase]: For 1138181/1138208 co-relation queries the response was YES. [2024-06-21 18:35:20,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68670 conditions, 6605 events. 4378/6605 cut-off events. For 1138181/1138208 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 35737 event pairs, 1470 based on Foata normal form. 4/6570 useless extension candidates. Maximal degree in co-relation 68522. Up to 6291 conditions per place. [2024-06-21 18:35:20,318 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 589 selfloop transitions, 24 changer transitions 0/624 dead transitions. [2024-06-21 18:35:20,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 624 transitions, 9453 flow [2024-06-21 18:35:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:35:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:35:20,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-21 18:35:20,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930232558139535 [2024-06-21 18:35:20,320 INFO L175 Difference]: Start difference. First operand has 302 places, 595 transitions, 7937 flow. Second operand 10 states and 169 transitions. [2024-06-21 18:35:20,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 624 transitions, 9453 flow [2024-06-21 18:35:22,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 624 transitions, 9422 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-21 18:35:22,993 INFO L231 Difference]: Finished difference. Result has 310 places, 597 transitions, 8045 flow [2024-06-21 18:35:22,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7906, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8045, PETRI_PLACES=310, PETRI_TRANSITIONS=597} [2024-06-21 18:35:22,994 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 266 predicate places. [2024-06-21 18:35:22,994 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 597 transitions, 8045 flow [2024-06-21 18:35:22,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-21 18:35:22,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:22,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:22,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 18:35:22,995 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:35:22,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:22,995 INFO L85 PathProgramCache]: Analyzing trace with hash 96854500, now seen corresponding path program 2 times [2024-06-21 18:35:22,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:22,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733421361] [2024-06-21 18:35:22,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:22,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:25,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:25,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733421361] [2024-06-21 18:35:25,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733421361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:25,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:25,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:35:25,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837726164] [2024-06-21 18:35:25,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:25,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:35:25,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:25,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:35:25,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:35:25,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-21 18:35:25,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 597 transitions, 8045 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:25,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:25,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-21 18:35:25,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:27,265 INFO L124 PetriNetUnfolderBase]: 4379/6608 cut-off events. [2024-06-21 18:35:27,265 INFO L125 PetriNetUnfolderBase]: For 1118972/1118979 co-relation queries the response was YES. [2024-06-21 18:35:27,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68024 conditions, 6608 events. 4379/6608 cut-off events. For 1118972/1118979 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 35568 event pairs, 1534 based on Foata normal form. 4/6598 useless extension candidates. Maximal degree in co-relation 67873. Up to 6267 conditions per place. [2024-06-21 18:35:27,366 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 534 selfloop transitions, 18 changer transitions 0/605 dead transitions. [2024-06-21 18:35:27,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 605 transitions, 9197 flow [2024-06-21 18:35:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:35:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:35:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-21 18:35:27,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069767441860465 [2024-06-21 18:35:27,368 INFO L175 Difference]: Start difference. First operand has 310 places, 597 transitions, 8045 flow. Second operand 6 states and 105 transitions. [2024-06-21 18:35:27,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 605 transitions, 9197 flow [2024-06-21 18:35:29,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 605 transitions, 9034 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-21 18:35:29,591 INFO L231 Difference]: Finished difference. Result has 308 places, 597 transitions, 7926 flow [2024-06-21 18:35:29,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7882, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7926, PETRI_PLACES=308, PETRI_TRANSITIONS=597} [2024-06-21 18:35:29,592 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 264 predicate places. [2024-06-21 18:35:29,592 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 597 transitions, 7926 flow [2024-06-21 18:35:29,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:29,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:29,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:29,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 18:35:29,592 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:35:29,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:29,592 INFO L85 PathProgramCache]: Analyzing trace with hash 547563810, now seen corresponding path program 1 times [2024-06-21 18:35:29,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:29,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733140438] [2024-06-21 18:35:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:29,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:32,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:32,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733140438] [2024-06-21 18:35:32,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733140438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:32,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:32,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:35:32,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068999993] [2024-06-21 18:35:32,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:32,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:35:32,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:32,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:35:32,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:35:32,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:35:32,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 597 transitions, 7926 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:32,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:32,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:35:32,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:34,090 INFO L124 PetriNetUnfolderBase]: 4104/6288 cut-off events. [2024-06-21 18:35:34,091 INFO L125 PetriNetUnfolderBase]: For 1148935/1149014 co-relation queries the response was YES. [2024-06-21 18:35:34,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65889 conditions, 6288 events. 4104/6288 cut-off events. For 1148935/1149014 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 34689 event pairs, 1467 based on Foata normal form. 19/6236 useless extension candidates. Maximal degree in co-relation 65737. Up to 5787 conditions per place. [2024-06-21 18:35:34,189 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 506 selfloop transitions, 20 changer transitions 0/615 dead transitions. [2024-06-21 18:35:34,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 615 transitions, 9118 flow [2024-06-21 18:35:34,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:35:34,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:35:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-21 18:35:34,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40406976744186046 [2024-06-21 18:35:34,190 INFO L175 Difference]: Start difference. First operand has 308 places, 597 transitions, 7926 flow. Second operand 8 states and 139 transitions. [2024-06-21 18:35:34,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 615 transitions, 9118 flow [2024-06-21 18:35:37,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 615 transitions, 9074 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-21 18:35:37,106 INFO L231 Difference]: Finished difference. Result has 314 places, 604 transitions, 8033 flow [2024-06-21 18:35:37,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7882, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8033, PETRI_PLACES=314, PETRI_TRANSITIONS=604} [2024-06-21 18:35:37,107 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 270 predicate places. [2024-06-21 18:35:37,107 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 604 transitions, 8033 flow [2024-06-21 18:35:37,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:37,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:37,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:37,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 18:35:37,108 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:35:37,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:37,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1442985804, now seen corresponding path program 1 times [2024-06-21 18:35:37,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:37,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113225839] [2024-06-21 18:35:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:37,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:39,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:39,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113225839] [2024-06-21 18:35:39,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113225839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:39,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:39,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:35:39,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808499780] [2024-06-21 18:35:39,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:39,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:35:39,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:39,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:35:39,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:35:39,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-21 18:35:39,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 604 transitions, 8033 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:39,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:39,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-21 18:35:39,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:41,665 INFO L124 PetriNetUnfolderBase]: 3680/5877 cut-off events. [2024-06-21 18:35:41,665 INFO L125 PetriNetUnfolderBase]: For 1152684/1152904 co-relation queries the response was YES. [2024-06-21 18:35:41,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64167 conditions, 5877 events. 3680/5877 cut-off events. For 1152684/1152904 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 35246 event pairs, 573 based on Foata normal form. 14/5762 useless extension candidates. Maximal degree in co-relation 64011. Up to 4367 conditions per place. [2024-06-21 18:35:41,748 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 419 selfloop transitions, 156 changer transitions 0/653 dead transitions. [2024-06-21 18:35:41,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 653 transitions, 10183 flow [2024-06-21 18:35:41,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:35:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:35:41,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 242 transitions. [2024-06-21 18:35:41,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2024-06-21 18:35:41,750 INFO L175 Difference]: Start difference. First operand has 314 places, 604 transitions, 8033 flow. Second operand 11 states and 242 transitions. [2024-06-21 18:35:41,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 653 transitions, 10183 flow [2024-06-21 18:35:44,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 653 transitions, 10106 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-21 18:35:44,683 INFO L231 Difference]: Finished difference. Result has 322 places, 611 transitions, 8637 flow [2024-06-21 18:35:44,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7956, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8637, PETRI_PLACES=322, PETRI_TRANSITIONS=611} [2024-06-21 18:35:44,684 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 278 predicate places. [2024-06-21 18:35:44,684 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 611 transitions, 8637 flow [2024-06-21 18:35:44,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:35:44,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:44,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:44,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 18:35:44,684 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:35:44,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:44,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1269369125, now seen corresponding path program 2 times [2024-06-21 18:35:44,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:44,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126599880] [2024-06-21 18:35:44,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:44,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:47,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:47,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126599880] [2024-06-21 18:35:47,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126599880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:47,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:47,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:35:47,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059856705] [2024-06-21 18:35:47,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:47,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:35:47,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:35:47,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:35:47,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:35:47,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 611 transitions, 8637 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-21 18:35:47,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:47,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:35:47,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:49,875 INFO L124 PetriNetUnfolderBase]: 4250/6530 cut-off events. [2024-06-21 18:35:49,875 INFO L125 PetriNetUnfolderBase]: For 1343938/1343989 co-relation queries the response was YES. [2024-06-21 18:35:49,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74344 conditions, 6530 events. 4250/6530 cut-off events. For 1343938/1343989 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 36876 event pairs, 929 based on Foata normal form. 12/6484 useless extension candidates. Maximal degree in co-relation 74185. Up to 5458 conditions per place. [2024-06-21 18:35:49,978 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 473 selfloop transitions, 191 changer transitions 0/677 dead transitions. [2024-06-21 18:35:49,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 677 transitions, 11244 flow [2024-06-21 18:35:49,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:35:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:35:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 237 transitions. [2024-06-21 18:35:49,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-21 18:35:49,980 INFO L175 Difference]: Start difference. First operand has 322 places, 611 transitions, 8637 flow. Second operand 12 states and 237 transitions. [2024-06-21 18:35:49,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 677 transitions, 11244 flow [2024-06-21 18:35:52,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 677 transitions, 11016 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-21 18:35:52,580 INFO L231 Difference]: Finished difference. Result has 329 places, 634 transitions, 9479 flow [2024-06-21 18:35:52,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8415, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9479, PETRI_PLACES=329, PETRI_TRANSITIONS=634} [2024-06-21 18:35:52,581 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 285 predicate places. [2024-06-21 18:35:52,581 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 634 transitions, 9479 flow [2024-06-21 18:35:52,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-21 18:35:52,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:35:52,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:35:52,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 18:35:52,582 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:35:52,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:35:52,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1307349158, now seen corresponding path program 2 times [2024-06-21 18:35:52,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:35:52,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759000277] [2024-06-21 18:35:52,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:35:52,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:35:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:35:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:35:56,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:35:56,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759000277] [2024-06-21 18:35:56,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759000277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:35:56,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:35:56,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:35:56,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473544306] [2024-06-21 18:35:56,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:35:56,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:35:56,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:35:56,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:35:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:35:56,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:35:56,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 634 transitions, 9479 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) [2024-06-21 18:35:56,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:35:56,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:35:56,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:35:58,724 INFO L124 PetriNetUnfolderBase]: 4342/6633 cut-off events. [2024-06-21 18:35:58,724 INFO L125 PetriNetUnfolderBase]: For 1415303/1415353 co-relation queries the response was YES. [2024-06-21 18:35:58,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77746 conditions, 6633 events. 4342/6633 cut-off events. For 1415303/1415353 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 37437 event pairs, 773 based on Foata normal form. 16/6569 useless extension candidates. Maximal degree in co-relation 77584. Up to 5400 conditions per place. [2024-06-21 18:35:58,833 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 499 selfloop transitions, 175 changer transitions 0/687 dead transitions. [2024-06-21 18:35:58,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 687 transitions, 11726 flow [2024-06-21 18:35:58,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:35:58,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:35:58,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 215 transitions. [2024-06-21 18:35:58,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 18:35:58,834 INFO L175 Difference]: Start difference. First operand has 329 places, 634 transitions, 9479 flow. Second operand 10 states and 215 transitions. [2024-06-21 18:35:58,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 687 transitions, 11726 flow [2024-06-21 18:36:02,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 687 transitions, 11505 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-21 18:36:02,164 INFO L231 Difference]: Finished difference. Result has 332 places, 640 transitions, 9802 flow [2024-06-21 18:36:02,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9262, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9802, PETRI_PLACES=332, PETRI_TRANSITIONS=640} [2024-06-21 18:36:02,165 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 288 predicate places. [2024-06-21 18:36:02,165 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 640 transitions, 9802 flow [2024-06-21 18:36:02,165 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) [2024-06-21 18:36:02,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:02,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:02,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 18:36:02,165 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:36:02,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:02,165 INFO L85 PathProgramCache]: Analyzing trace with hash -388126225, now seen corresponding path program 3 times [2024-06-21 18:36:02,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:02,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629592419] [2024-06-21 18:36:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:02,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:06,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:06,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629592419] [2024-06-21 18:36:06,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629592419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:06,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:06,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:36:06,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301507524] [2024-06-21 18:36:06,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:06,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:36:06,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:36:06,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:36:06,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:36:06,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 640 transitions, 9802 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:06,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:06,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:36:06,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:09,349 INFO L124 PetriNetUnfolderBase]: 4452/6844 cut-off events. [2024-06-21 18:36:09,349 INFO L125 PetriNetUnfolderBase]: For 1403407/1403454 co-relation queries the response was YES. [2024-06-21 18:36:09,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79931 conditions, 6844 events. 4452/6844 cut-off events. For 1403407/1403454 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 39143 event pairs, 1006 based on Foata normal form. 17/6805 useless extension candidates. Maximal degree in co-relation 79769. Up to 5882 conditions per place. [2024-06-21 18:36:09,463 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 536 selfloop transitions, 181 changer transitions 0/730 dead transitions. [2024-06-21 18:36:09,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 730 transitions, 13270 flow [2024-06-21 18:36:09,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:36:09,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:36:09,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2024-06-21 18:36:09,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-06-21 18:36:09,464 INFO L175 Difference]: Start difference. First operand has 332 places, 640 transitions, 9802 flow. Second operand 12 states and 248 transitions. [2024-06-21 18:36:09,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 730 transitions, 13270 flow [2024-06-21 18:36:12,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 730 transitions, 12745 flow, removed 104 selfloop flow, removed 7 redundant places. [2024-06-21 18:36:12,821 INFO L231 Difference]: Finished difference. Result has 339 places, 667 transitions, 10328 flow [2024-06-21 18:36:12,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9302, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10328, PETRI_PLACES=339, PETRI_TRANSITIONS=667} [2024-06-21 18:36:12,822 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 295 predicate places. [2024-06-21 18:36:12,823 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 667 transitions, 10328 flow [2024-06-21 18:36:12,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:12,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:12,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:12,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 18:36:12,823 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:36:12,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash -388289130, now seen corresponding path program 3 times [2024-06-21 18:36:12,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:12,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802570898] [2024-06-21 18:36:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:12,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:16,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:16,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802570898] [2024-06-21 18:36:16,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802570898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:16,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:16,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:36:16,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017221334] [2024-06-21 18:36:16,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:16,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:36:16,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:16,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:36:16,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:36:16,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:36:16,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 667 transitions, 10328 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) [2024-06-21 18:36:16,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:16,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:36:16,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:19,325 INFO L124 PetriNetUnfolderBase]: 4584/7047 cut-off events. [2024-06-21 18:36:19,325 INFO L125 PetriNetUnfolderBase]: For 1450991/1451049 co-relation queries the response was YES. [2024-06-21 18:36:19,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81793 conditions, 7047 events. 4584/7047 cut-off events. For 1450991/1451049 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 40691 event pairs, 1021 based on Foata normal form. 16/6991 useless extension candidates. Maximal degree in co-relation 81628. Up to 6022 conditions per place. [2024-06-21 18:36:19,425 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 543 selfloop transitions, 178 changer transitions 0/734 dead transitions. [2024-06-21 18:36:19,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 734 transitions, 12880 flow [2024-06-21 18:36:19,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:36:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:36:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 215 transitions. [2024-06-21 18:36:19,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 18:36:19,427 INFO L175 Difference]: Start difference. First operand has 339 places, 667 transitions, 10328 flow. Second operand 10 states and 215 transitions. [2024-06-21 18:36:19,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 734 transitions, 12880 flow [2024-06-21 18:36:21,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 734 transitions, 12560 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-06-21 18:36:21,893 INFO L231 Difference]: Finished difference. Result has 343 places, 685 transitions, 10744 flow [2024-06-21 18:36:21,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10008, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10744, PETRI_PLACES=343, PETRI_TRANSITIONS=685} [2024-06-21 18:36:21,894 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 299 predicate places. [2024-06-21 18:36:21,894 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 685 transitions, 10744 flow [2024-06-21 18:36:21,894 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) [2024-06-21 18:36:21,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:21,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:21,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 18:36:21,894 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:36:21,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:21,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1792088094, now seen corresponding path program 4 times [2024-06-21 18:36:21,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:21,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078298766] [2024-06-21 18:36:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:21,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:26,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:26,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078298766] [2024-06-21 18:36:26,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078298766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:26,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:26,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:36:26,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916190986] [2024-06-21 18:36:26,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:26,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:36:26,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:26,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:36:26,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:36:26,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:36:26,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 685 transitions, 10744 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:26,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:26,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:36:26,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:28,967 INFO L124 PetriNetUnfolderBase]: 4629/7124 cut-off events. [2024-06-21 18:36:28,967 INFO L125 PetriNetUnfolderBase]: For 1482349/1482404 co-relation queries the response was YES. [2024-06-21 18:36:29,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83182 conditions, 7124 events. 4629/7124 cut-off events. For 1482349/1482404 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 41320 event pairs, 1093 based on Foata normal form. 16/7072 useless extension candidates. Maximal degree in co-relation 83014. Up to 6407 conditions per place. [2024-06-21 18:36:29,089 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 593 selfloop transitions, 136 changer transitions 0/742 dead transitions. [2024-06-21 18:36:29,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 742 transitions, 12744 flow [2024-06-21 18:36:29,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 18:36:29,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 18:36:29,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 245 transitions. [2024-06-21 18:36:29,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43828264758497315 [2024-06-21 18:36:29,091 INFO L175 Difference]: Start difference. First operand has 343 places, 685 transitions, 10744 flow. Second operand 13 states and 245 transitions. [2024-06-21 18:36:29,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 742 transitions, 12744 flow [2024-06-21 18:36:32,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 742 transitions, 12465 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-21 18:36:32,466 INFO L231 Difference]: Finished difference. Result has 351 places, 693 transitions, 10973 flow [2024-06-21 18:36:32,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10467, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10973, PETRI_PLACES=351, PETRI_TRANSITIONS=693} [2024-06-21 18:36:32,466 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 307 predicate places. [2024-06-21 18:36:32,467 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 693 transitions, 10973 flow [2024-06-21 18:36:32,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:36:32,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:32,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:32,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 18:36:32,467 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:36:32,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:32,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1995810316, now seen corresponding path program 5 times [2024-06-21 18:36:32,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:32,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923576299] [2024-06-21 18:36:32,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:32,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:36,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:36,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923576299] [2024-06-21 18:36:36,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923576299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:36,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:36,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:36:36,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128038998] [2024-06-21 18:36:36,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:36,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:36:36,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:36,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:36:36,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:36:36,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:36:36,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 693 transitions, 10973 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) [2024-06-21 18:36:36,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:36,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:36:36,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:39,203 INFO L124 PetriNetUnfolderBase]: 4662/7174 cut-off events. [2024-06-21 18:36:39,203 INFO L125 PetriNetUnfolderBase]: For 1515917/1515962 co-relation queries the response was YES. [2024-06-21 18:36:39,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84253 conditions, 7174 events. 4662/7174 cut-off events. For 1515917/1515962 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 41579 event pairs, 1109 based on Foata normal form. 8/7118 useless extension candidates. Maximal degree in co-relation 84081. Up to 6320 conditions per place. [2024-06-21 18:36:39,333 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 594 selfloop transitions, 130 changer transitions 0/737 dead transitions. [2024-06-21 18:36:39,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 737 transitions, 13193 flow [2024-06-21 18:36:39,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:36:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:36:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-21 18:36:39,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2024-06-21 18:36:39,335 INFO L175 Difference]: Start difference. First operand has 351 places, 693 transitions, 10973 flow. Second operand 9 states and 192 transitions. [2024-06-21 18:36:39,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 737 transitions, 13193 flow [2024-06-21 18:36:42,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 737 transitions, 12889 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-21 18:36:42,965 INFO L231 Difference]: Finished difference. Result has 350 places, 697 transitions, 11055 flow [2024-06-21 18:36:42,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10669, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11055, PETRI_PLACES=350, PETRI_TRANSITIONS=697} [2024-06-21 18:36:42,965 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 306 predicate places. [2024-06-21 18:36:42,965 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 697 transitions, 11055 flow [2024-06-21 18:36:42,965 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) [2024-06-21 18:36:42,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:42,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:42,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 18:36:42,966 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:36:42,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:42,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1995647411, now seen corresponding path program 4 times [2024-06-21 18:36:42,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:42,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576259597] [2024-06-21 18:36:42,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:42,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:46,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:46,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576259597] [2024-06-21 18:36:46,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576259597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:46,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:46,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:36:46,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423582058] [2024-06-21 18:36:46,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:46,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:36:46,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:46,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:36:46,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:36:46,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:36:46,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 697 transitions, 11055 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) [2024-06-21 18:36:46,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:46,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:36:46,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:49,368 INFO L124 PetriNetUnfolderBase]: 4798/7399 cut-off events. [2024-06-21 18:36:49,369 INFO L125 PetriNetUnfolderBase]: For 1611627/1611665 co-relation queries the response was YES. [2024-06-21 18:36:49,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87628 conditions, 7399 events. 4798/7399 cut-off events. For 1611627/1611665 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 43265 event pairs, 1097 based on Foata normal form. 16/7359 useless extension candidates. Maximal degree in co-relation 87456. Up to 6328 conditions per place. [2024-06-21 18:36:49,487 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 568 selfloop transitions, 179 changer transitions 0/760 dead transitions. [2024-06-21 18:36:49,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 760 transitions, 14209 flow [2024-06-21 18:36:49,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:36:49,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:36:49,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-21 18:36:49,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2024-06-21 18:36:49,488 INFO L175 Difference]: Start difference. First operand has 350 places, 697 transitions, 11055 flow. Second operand 9 states and 198 transitions. [2024-06-21 18:36:49,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 760 transitions, 14209 flow [2024-06-21 18:36:52,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 760 transitions, 13628 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-21 18:36:52,597 INFO L231 Difference]: Finished difference. Result has 350 places, 715 transitions, 11435 flow [2024-06-21 18:36:52,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10474, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11435, PETRI_PLACES=350, PETRI_TRANSITIONS=715} [2024-06-21 18:36:52,597 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 306 predicate places. [2024-06-21 18:36:52,598 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 715 transitions, 11435 flow [2024-06-21 18:36:52,598 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) [2024-06-21 18:36:52,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:36:52,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:36:52,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 18:36:52,598 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:36:52,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:36:52,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1995652216, now seen corresponding path program 6 times [2024-06-21 18:36:52,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:36:52,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210852693] [2024-06-21 18:36:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:36:52,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:36:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:36:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:36:56,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:36:56,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210852693] [2024-06-21 18:36:56,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210852693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:36:56,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:36:56,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:36:56,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726378049] [2024-06-21 18:36:56,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:36:56,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:36:56,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:36:56,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:36:56,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:36:56,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:36:56,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 715 transitions, 11435 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) [2024-06-21 18:36:56,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:36:56,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:36:56,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:36:58,809 INFO L124 PetriNetUnfolderBase]: 4822/7431 cut-off events. [2024-06-21 18:36:58,809 INFO L125 PetriNetUnfolderBase]: For 1617874/1617920 co-relation queries the response was YES. [2024-06-21 18:36:58,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87649 conditions, 7431 events. 4822/7431 cut-off events. For 1617874/1617920 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 43553 event pairs, 1140 based on Foata normal form. 8/7370 useless extension candidates. Maximal degree in co-relation 87478. Up to 6691 conditions per place. [2024-06-21 18:36:58,941 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 618 selfloop transitions, 124 changer transitions 0/755 dead transitions. [2024-06-21 18:36:58,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 755 transitions, 13336 flow [2024-06-21 18:36:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:36:58,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:36:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-21 18:36:58,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-21 18:36:58,942 INFO L175 Difference]: Start difference. First operand has 350 places, 715 transitions, 11435 flow. Second operand 10 states and 200 transitions. [2024-06-21 18:36:58,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 755 transitions, 13336 flow [2024-06-21 18:37:02,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 755 transitions, 12915 flow, removed 140 selfloop flow, removed 5 redundant places. [2024-06-21 18:37:02,892 INFO L231 Difference]: Finished difference. Result has 355 places, 719 transitions, 11389 flow [2024-06-21 18:37:02,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11014, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11389, PETRI_PLACES=355, PETRI_TRANSITIONS=719} [2024-06-21 18:37:02,892 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 311 predicate places. [2024-06-21 18:37:02,892 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 719 transitions, 11389 flow [2024-06-21 18:37:02,893 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) [2024-06-21 18:37:02,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:02,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:02,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 18:37:02,893 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:37:02,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:02,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1991183566, now seen corresponding path program 7 times [2024-06-21 18:37:02,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:02,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550376319] [2024-06-21 18:37:02,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:02,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:06,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:06,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550376319] [2024-06-21 18:37:06,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550376319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:06,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:06,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:37:06,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902874664] [2024-06-21 18:37:06,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:06,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:37:06,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:06,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:37:06,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:37:06,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:37:06,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 719 transitions, 11389 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:06,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:06,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:37:06,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:09,751 INFO L124 PetriNetUnfolderBase]: 4862/7501 cut-off events. [2024-06-21 18:37:09,752 INFO L125 PetriNetUnfolderBase]: For 1650104/1650149 co-relation queries the response was YES. [2024-06-21 18:37:09,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88305 conditions, 7501 events. 4862/7501 cut-off events. For 1650104/1650149 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 44146 event pairs, 1157 based on Foata normal form. 8/7445 useless extension candidates. Maximal degree in co-relation 88131. Up to 6867 conditions per place. [2024-06-21 18:37:09,875 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 660 selfloop transitions, 94 changer transitions 0/767 dead transitions. [2024-06-21 18:37:09,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 767 transitions, 13334 flow [2024-06-21 18:37:09,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:37:09,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:37:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 230 transitions. [2024-06-21 18:37:09,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44573643410852715 [2024-06-21 18:37:09,877 INFO L175 Difference]: Start difference. First operand has 355 places, 719 transitions, 11389 flow. Second operand 12 states and 230 transitions. [2024-06-21 18:37:09,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 767 transitions, 13334 flow [2024-06-21 18:37:13,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 767 transitions, 13011 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-21 18:37:13,703 INFO L231 Difference]: Finished difference. Result has 359 places, 723 transitions, 11386 flow [2024-06-21 18:37:13,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11066, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11386, PETRI_PLACES=359, PETRI_TRANSITIONS=723} [2024-06-21 18:37:13,704 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 315 predicate places. [2024-06-21 18:37:13,704 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 723 transitions, 11386 flow [2024-06-21 18:37:13,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:13,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:13,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:13,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 18:37:13,704 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:37:13,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:13,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1991178761, now seen corresponding path program 5 times [2024-06-21 18:37:13,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:13,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056107798] [2024-06-21 18:37:13,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:13,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:17,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:17,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056107798] [2024-06-21 18:37:17,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056107798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:17,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:17,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:37:17,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611004663] [2024-06-21 18:37:17,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:17,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:37:17,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:17,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:37:17,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:37:17,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:37:17,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 723 transitions, 11386 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:17,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:17,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:37:17,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:20,958 INFO L124 PetriNetUnfolderBase]: 4862/7507 cut-off events. [2024-06-21 18:37:20,958 INFO L125 PetriNetUnfolderBase]: For 1669597/1669635 co-relation queries the response was YES. [2024-06-21 18:37:21,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88116 conditions, 7507 events. 4862/7507 cut-off events. For 1669597/1669635 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 44155 event pairs, 1124 based on Foata normal form. 9/7459 useless extension candidates. Maximal degree in co-relation 87942. Up to 6700 conditions per place. [2024-06-21 18:37:21,075 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 627 selfloop transitions, 140 changer transitions 0/780 dead transitions. [2024-06-21 18:37:21,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 780 transitions, 14324 flow [2024-06-21 18:37:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:37:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:37:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 244 transitions. [2024-06-21 18:37:21,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2024-06-21 18:37:21,076 INFO L175 Difference]: Start difference. First operand has 359 places, 723 transitions, 11386 flow. Second operand 12 states and 244 transitions. [2024-06-21 18:37:21,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 780 transitions, 14324 flow [2024-06-21 18:37:24,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 780 transitions, 14064 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-21 18:37:24,959 INFO L231 Difference]: Finished difference. Result has 362 places, 726 transitions, 11520 flow [2024-06-21 18:37:24,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11126, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11520, PETRI_PLACES=362, PETRI_TRANSITIONS=726} [2024-06-21 18:37:24,960 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 318 predicate places. [2024-06-21 18:37:24,960 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 726 transitions, 11520 flow [2024-06-21 18:37:24,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:24,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:24,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:24,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 18:37:24,961 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:37:24,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:24,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1548962741, now seen corresponding path program 6 times [2024-06-21 18:37:24,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:24,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228620709] [2024-06-21 18:37:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:24,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:28,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:28,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228620709] [2024-06-21 18:37:28,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228620709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:28,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:28,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:37:28,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726994347] [2024-06-21 18:37:28,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:28,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:37:28,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:28,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:37:28,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:37:28,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:37:28,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 726 transitions, 11520 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:28,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:28,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:37:28,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:31,401 INFO L124 PetriNetUnfolderBase]: 4835/7484 cut-off events. [2024-06-21 18:37:31,402 INFO L125 PetriNetUnfolderBase]: For 1676098/1676149 co-relation queries the response was YES. [2024-06-21 18:37:31,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87436 conditions, 7484 events. 4835/7484 cut-off events. For 1676098/1676149 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 44223 event pairs, 1028 based on Foata normal form. 17/7440 useless extension candidates. Maximal degree in co-relation 87261. Up to 6179 conditions per place. [2024-06-21 18:37:31,531 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 527 selfloop transitions, 237 changer transitions 0/777 dead transitions. [2024-06-21 18:37:31,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 777 transitions, 14252 flow [2024-06-21 18:37:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:37:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:37:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-21 18:37:31,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-21 18:37:31,535 INFO L175 Difference]: Start difference. First operand has 362 places, 726 transitions, 11520 flow. Second operand 11 states and 220 transitions. [2024-06-21 18:37:31,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 777 transitions, 14252 flow [2024-06-21 18:37:35,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 777 transitions, 13864 flow, removed 58 selfloop flow, removed 10 redundant places. [2024-06-21 18:37:35,684 INFO L231 Difference]: Finished difference. Result has 363 places, 726 transitions, 11632 flow [2024-06-21 18:37:35,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11132, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11632, PETRI_PLACES=363, PETRI_TRANSITIONS=726} [2024-06-21 18:37:35,684 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 319 predicate places. [2024-06-21 18:37:35,685 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 726 transitions, 11632 flow [2024-06-21 18:37:35,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:35,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:35,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:35,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 18:37:35,685 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:37:35,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:35,686 INFO L85 PathProgramCache]: Analyzing trace with hash -142471188, now seen corresponding path program 8 times [2024-06-21 18:37:35,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:35,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54676356] [2024-06-21 18:37:35,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:35,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:39,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:39,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54676356] [2024-06-21 18:37:39,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54676356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:39,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:39,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:37:39,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576201640] [2024-06-21 18:37:39,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:39,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:37:39,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:39,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:37:39,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:37:40,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:37:40,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 726 transitions, 11632 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:40,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:40,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:37:40,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:42,765 INFO L124 PetriNetUnfolderBase]: 4817/7442 cut-off events. [2024-06-21 18:37:42,766 INFO L125 PetriNetUnfolderBase]: For 1682691/1682750 co-relation queries the response was YES. [2024-06-21 18:37:42,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87359 conditions, 7442 events. 4817/7442 cut-off events. For 1682691/1682750 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 43764 event pairs, 1081 based on Foata normal form. 16/7383 useless extension candidates. Maximal degree in co-relation 87182. Up to 6521 conditions per place. [2024-06-21 18:37:42,894 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 583 selfloop transitions, 174 changer transitions 0/770 dead transitions. [2024-06-21 18:37:42,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 770 transitions, 13581 flow [2024-06-21 18:37:42,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:37:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:37:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-21 18:37:42,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46744186046511627 [2024-06-21 18:37:42,895 INFO L175 Difference]: Start difference. First operand has 363 places, 726 transitions, 11632 flow. Second operand 10 states and 201 transitions. [2024-06-21 18:37:42,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 770 transitions, 13581 flow [2024-06-21 18:37:46,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 770 transitions, 12762 flow, removed 120 selfloop flow, removed 10 redundant places. [2024-06-21 18:37:46,473 INFO L231 Difference]: Finished difference. Result has 363 places, 726 transitions, 11183 flow [2024-06-21 18:37:46,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10813, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11183, PETRI_PLACES=363, PETRI_TRANSITIONS=726} [2024-06-21 18:37:46,474 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 319 predicate places. [2024-06-21 18:37:46,474 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 726 transitions, 11183 flow [2024-06-21 18:37:46,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:37:46,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:46,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:46,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 18:37:46,475 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:37:46,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:46,475 INFO L85 PathProgramCache]: Analyzing trace with hash -244883363, now seen corresponding path program 7 times [2024-06-21 18:37:46,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:46,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096781531] [2024-06-21 18:37:46,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:46,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:37:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:37:49,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:37:49,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096781531] [2024-06-21 18:37:49,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096781531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:37:49,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:37:49,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:37:49,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961672852] [2024-06-21 18:37:49,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:37:49,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:37:49,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:37:49,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:37:49,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:37:50,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:37:50,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 726 transitions, 11183 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-21 18:37:50,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:37:50,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:37:50,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:37:52,865 INFO L124 PetriNetUnfolderBase]: 4887/7552 cut-off events. [2024-06-21 18:37:52,865 INFO L125 PetriNetUnfolderBase]: For 1689640/1689678 co-relation queries the response was YES. [2024-06-21 18:37:52,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87079 conditions, 7552 events. 4887/7552 cut-off events. For 1689640/1689678 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 44588 event pairs, 1118 based on Foata normal form. 11/7507 useless extension candidates. Maximal degree in co-relation 86903. Up to 6574 conditions per place. [2024-06-21 18:37:52,987 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 603 selfloop transitions, 163 changer transitions 0/779 dead transitions. [2024-06-21 18:37:52,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 779 transitions, 14108 flow [2024-06-21 18:37:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:37:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:37:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-21 18:37:52,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-21 18:37:52,990 INFO L175 Difference]: Start difference. First operand has 363 places, 726 transitions, 11183 flow. Second operand 10 states and 197 transitions. [2024-06-21 18:37:52,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 779 transitions, 14108 flow [2024-06-21 18:37:56,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 779 transitions, 13762 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-21 18:37:56,350 INFO L231 Difference]: Finished difference. Result has 365 places, 735 transitions, 11472 flow [2024-06-21 18:37:56,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10845, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11472, PETRI_PLACES=365, PETRI_TRANSITIONS=735} [2024-06-21 18:37:56,350 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 321 predicate places. [2024-06-21 18:37:56,350 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 735 transitions, 11472 flow [2024-06-21 18:37:56,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-21 18:37:56,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:37:56,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:37:56,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 18:37:56,351 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:37:56,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:37:56,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1635798546, now seen corresponding path program 9 times [2024-06-21 18:37:56,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:37:56,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933375459] [2024-06-21 18:37:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:37:56,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:37:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:00,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:00,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933375459] [2024-06-21 18:38:00,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933375459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:00,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:00,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:38:00,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405236503] [2024-06-21 18:38:00,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:00,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:38:00,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:00,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:38:00,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:38:00,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:38:00,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 735 transitions, 11472 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:38:00,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:00,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:38:00,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:03,286 INFO L124 PetriNetUnfolderBase]: 4869/7518 cut-off events. [2024-06-21 18:38:03,286 INFO L125 PetriNetUnfolderBase]: For 1654003/1654048 co-relation queries the response was YES. [2024-06-21 18:38:03,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86441 conditions, 7518 events. 4869/7518 cut-off events. For 1654003/1654048 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 44307 event pairs, 1156 based on Foata normal form. 8/7459 useless extension candidates. Maximal degree in co-relation 86263. Up to 6821 conditions per place. [2024-06-21 18:38:03,419 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 652 selfloop transitions, 105 changer transitions 0/770 dead transitions. [2024-06-21 18:38:03,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 770 transitions, 13283 flow [2024-06-21 18:38:03,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:38:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:38:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-21 18:38:03,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-21 18:38:03,421 INFO L175 Difference]: Start difference. First operand has 365 places, 735 transitions, 11472 flow. Second operand 9 states and 178 transitions. [2024-06-21 18:38:03,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 770 transitions, 13283 flow [2024-06-21 18:38:07,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 770 transitions, 12715 flow, removed 148 selfloop flow, removed 7 redundant places. [2024-06-21 18:38:07,140 INFO L231 Difference]: Finished difference. Result has 367 places, 735 transitions, 11131 flow [2024-06-21 18:38:07,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10904, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11131, PETRI_PLACES=367, PETRI_TRANSITIONS=735} [2024-06-21 18:38:07,140 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 323 predicate places. [2024-06-21 18:38:07,140 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 735 transitions, 11131 flow [2024-06-21 18:38:07,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:38:07,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:07,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:07,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 18:38:07,141 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:38:07,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:07,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1635804281, now seen corresponding path program 8 times [2024-06-21 18:38:07,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:07,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059799255] [2024-06-21 18:38:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:07,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:10,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:10,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059799255] [2024-06-21 18:38:10,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059799255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:10,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:10,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:38:10,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271368436] [2024-06-21 18:38:10,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:10,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:38:10,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:10,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:38:10,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:38:10,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:38:10,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 735 transitions, 11131 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) [2024-06-21 18:38:10,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:10,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:38:10,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:12,968 INFO L124 PetriNetUnfolderBase]: 4855/7508 cut-off events. [2024-06-21 18:38:12,968 INFO L125 PetriNetUnfolderBase]: For 1654235/1654273 co-relation queries the response was YES. [2024-06-21 18:38:13,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84778 conditions, 7508 events. 4855/7508 cut-off events. For 1654235/1654273 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 44348 event pairs, 1125 based on Foata normal form. 11/7463 useless extension candidates. Maximal degree in co-relation 84600. Up to 6659 conditions per place. [2024-06-21 18:38:13,091 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 620 selfloop transitions, 141 changer transitions 0/774 dead transitions. [2024-06-21 18:38:13,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 774 transitions, 13373 flow [2024-06-21 18:38:13,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:38:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:38:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-21 18:38:13,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697674418604651 [2024-06-21 18:38:13,093 INFO L175 Difference]: Start difference. First operand has 367 places, 735 transitions, 11131 flow. Second operand 10 states and 202 transitions. [2024-06-21 18:38:13,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 774 transitions, 13373 flow [2024-06-21 18:38:17,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 774 transitions, 13030 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-21 18:38:17,176 INFO L231 Difference]: Finished difference. Result has 370 places, 735 transitions, 11110 flow [2024-06-21 18:38:17,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10792, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11110, PETRI_PLACES=370, PETRI_TRANSITIONS=735} [2024-06-21 18:38:17,176 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 326 predicate places. [2024-06-21 18:38:17,176 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 735 transitions, 11110 flow [2024-06-21 18:38:17,176 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) [2024-06-21 18:38:17,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:17,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:17,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 18:38:17,177 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:38:17,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:17,177 INFO L85 PathProgramCache]: Analyzing trace with hash 914863255, now seen corresponding path program 9 times [2024-06-21 18:38:17,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:17,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416261799] [2024-06-21 18:38:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:17,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:20,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:20,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416261799] [2024-06-21 18:38:20,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416261799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:20,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:20,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:38:20,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208015743] [2024-06-21 18:38:20,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:20,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:38:20,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:20,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:38:20,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:38:20,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:38:20,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 735 transitions, 11110 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) [2024-06-21 18:38:20,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:20,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:38:20,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:23,337 INFO L124 PetriNetUnfolderBase]: 4893/7569 cut-off events. [2024-06-21 18:38:23,337 INFO L125 PetriNetUnfolderBase]: For 1619281/1619324 co-relation queries the response was YES. [2024-06-21 18:38:23,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85073 conditions, 7569 events. 4893/7569 cut-off events. For 1619281/1619324 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 44683 event pairs, 1006 based on Foata normal form. 15/7541 useless extension candidates. Maximal degree in co-relation 84893. Up to 5957 conditions per place. [2024-06-21 18:38:23,450 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 490 selfloop transitions, 303 changer transitions 0/806 dead transitions. [2024-06-21 18:38:23,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 806 transitions, 15195 flow [2024-06-21 18:38:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:38:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:38:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2024-06-21 18:38:23,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513953488372093 [2024-06-21 18:38:23,451 INFO L175 Difference]: Start difference. First operand has 370 places, 735 transitions, 11110 flow. Second operand 10 states and 221 transitions. [2024-06-21 18:38:23,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 806 transitions, 15195 flow [2024-06-21 18:38:27,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 806 transitions, 14818 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 18:38:27,480 INFO L231 Difference]: Finished difference. Result has 372 places, 750 transitions, 11996 flow [2024-06-21 18:38:27,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10749, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11996, PETRI_PLACES=372, PETRI_TRANSITIONS=750} [2024-06-21 18:38:27,481 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 328 predicate places. [2024-06-21 18:38:27,481 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 750 transitions, 11996 flow [2024-06-21 18:38:27,481 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) [2024-06-21 18:38:27,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:27,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:27,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 18:38:27,481 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:38:27,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:27,481 INFO L85 PathProgramCache]: Analyzing trace with hash 914857520, now seen corresponding path program 10 times [2024-06-21 18:38:27,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:27,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570072717] [2024-06-21 18:38:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:27,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:31,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:31,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570072717] [2024-06-21 18:38:31,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570072717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:31,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:31,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:38:31,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551967171] [2024-06-21 18:38:31,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:31,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:38:31,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:31,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:38:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:38:31,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:38:31,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 750 transitions, 11996 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:38:31,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:31,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:38:31,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:34,388 INFO L124 PetriNetUnfolderBase]: 4898/7580 cut-off events. [2024-06-21 18:38:34,388 INFO L125 PetriNetUnfolderBase]: For 1625389/1625443 co-relation queries the response was YES. [2024-06-21 18:38:34,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86751 conditions, 7580 events. 4898/7580 cut-off events. For 1625389/1625443 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 44776 event pairs, 1011 based on Foata normal form. 16/7557 useless extension candidates. Maximal degree in co-relation 86569. Up to 6682 conditions per place. [2024-06-21 18:38:34,510 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 610 selfloop transitions, 167 changer transitions 0/790 dead transitions. [2024-06-21 18:38:34,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 790 transitions, 14049 flow [2024-06-21 18:38:34,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:38:34,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:38:34,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-21 18:38:34,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2024-06-21 18:38:34,511 INFO L175 Difference]: Start difference. First operand has 372 places, 750 transitions, 11996 flow. Second operand 9 states and 183 transitions. [2024-06-21 18:38:34,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 790 transitions, 14049 flow [2024-06-21 18:38:38,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 790 transitions, 13830 flow, removed 93 selfloop flow, removed 3 redundant places. [2024-06-21 18:38:38,774 INFO L231 Difference]: Finished difference. Result has 378 places, 752 transitions, 12214 flow [2024-06-21 18:38:38,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11779, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12214, PETRI_PLACES=378, PETRI_TRANSITIONS=752} [2024-06-21 18:38:38,775 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 334 predicate places. [2024-06-21 18:38:38,775 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 752 transitions, 12214 flow [2024-06-21 18:38:38,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:38:38,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:38,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:38,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 18:38:38,775 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:38:38,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:38,776 INFO L85 PathProgramCache]: Analyzing trace with hash -106355213, now seen corresponding path program 10 times [2024-06-21 18:38:38,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:38,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997083481] [2024-06-21 18:38:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:38,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:42,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:42,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997083481] [2024-06-21 18:38:42,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997083481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:42,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:42,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:38:42,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51718387] [2024-06-21 18:38:42,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:42,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:38:42,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:42,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:38:42,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:38:42,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:38:42,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 752 transitions, 12214 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-21 18:38:42,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:42,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:38:42,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:45,409 INFO L124 PetriNetUnfolderBase]: 4933/7635 cut-off events. [2024-06-21 18:38:45,410 INFO L125 PetriNetUnfolderBase]: For 1655850/1655904 co-relation queries the response was YES. [2024-06-21 18:38:45,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87574 conditions, 7635 events. 4933/7635 cut-off events. For 1655850/1655904 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 45184 event pairs, 1006 based on Foata normal form. 24/7617 useless extension candidates. Maximal degree in co-relation 87391. Up to 5978 conditions per place. [2024-06-21 18:38:45,518 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 494 selfloop transitions, 305 changer transitions 0/812 dead transitions. [2024-06-21 18:38:45,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 812 transitions, 15947 flow [2024-06-21 18:38:45,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:38:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:38:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-21 18:38:45,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49767441860465117 [2024-06-21 18:38:45,519 INFO L175 Difference]: Start difference. First operand has 378 places, 752 transitions, 12214 flow. Second operand 10 states and 214 transitions. [2024-06-21 18:38:45,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 812 transitions, 15947 flow [2024-06-21 18:38:51,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 812 transitions, 15530 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-21 18:38:51,208 INFO L231 Difference]: Finished difference. Result has 381 places, 755 transitions, 12531 flow [2024-06-21 18:38:51,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11797, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12531, PETRI_PLACES=381, PETRI_TRANSITIONS=755} [2024-06-21 18:38:51,209 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 337 predicate places. [2024-06-21 18:38:51,209 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 755 transitions, 12531 flow [2024-06-21 18:38:51,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-21 18:38:51,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:38:51,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:38:51,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 18:38:51,209 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:38:51,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:38:51,210 INFO L85 PathProgramCache]: Analyzing trace with hash -106499363, now seen corresponding path program 11 times [2024-06-21 18:38:51,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:38:51,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539996949] [2024-06-21 18:38:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:38:51,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:38:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:38:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:38:55,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:38:55,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539996949] [2024-06-21 18:38:55,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539996949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:38:55,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:38:55,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:38:55,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628322307] [2024-06-21 18:38:55,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:38:55,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:38:55,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:38:55,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:38:55,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:38:55,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:38:55,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 755 transitions, 12531 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-21 18:38:55,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:38:55,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:38:55,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:38:58,482 INFO L124 PetriNetUnfolderBase]: 5002/7740 cut-off events. [2024-06-21 18:38:58,483 INFO L125 PetriNetUnfolderBase]: For 1720927/1720974 co-relation queries the response was YES. [2024-06-21 18:38:58,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90463 conditions, 7740 events. 5002/7740 cut-off events. For 1720927/1720974 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 45974 event pairs, 1008 based on Foata normal form. 14/7711 useless extension candidates. Maximal degree in co-relation 90278. Up to 5923 conditions per place. [2024-06-21 18:38:58,601 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 487 selfloop transitions, 314 changer transitions 0/814 dead transitions. [2024-06-21 18:38:58,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 814 transitions, 16338 flow [2024-06-21 18:38:58,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:38:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:38:58,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 213 transitions. [2024-06-21 18:38:58,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49534883720930234 [2024-06-21 18:38:58,603 INFO L175 Difference]: Start difference. First operand has 381 places, 755 transitions, 12531 flow. Second operand 10 states and 213 transitions. [2024-06-21 18:38:58,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 814 transitions, 16338 flow [2024-06-21 18:39:04,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 814 transitions, 15636 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-21 18:39:04,109 INFO L231 Difference]: Finished difference. Result has 383 places, 761 transitions, 12703 flow [2024-06-21 18:39:04,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11829, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12703, PETRI_PLACES=383, PETRI_TRANSITIONS=761} [2024-06-21 18:39:04,110 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 339 predicate places. [2024-06-21 18:39:04,110 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 761 transitions, 12703 flow [2024-06-21 18:39:04,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-21 18:39:04,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:39:04,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:39:04,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 18:39:04,110 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:39:04,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:39:04,110 INFO L85 PathProgramCache]: Analyzing trace with hash -106499518, now seen corresponding path program 11 times [2024-06-21 18:39:04,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:39:04,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393632069] [2024-06-21 18:39:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:39:04,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:39:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:08,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:08,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393632069] [2024-06-21 18:39:08,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393632069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:08,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:08,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:39:08,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631868065] [2024-06-21 18:39:08,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:08,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:39:08,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:08,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:39:08,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:39:08,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:39:08,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 761 transitions, 12703 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-21 18:39:08,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:08,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:39:08,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:11,398 INFO L124 PetriNetUnfolderBase]: 5024/7770 cut-off events. [2024-06-21 18:39:11,399 INFO L125 PetriNetUnfolderBase]: For 1778545/1778600 co-relation queries the response was YES. [2024-06-21 18:39:11,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91694 conditions, 7770 events. 5024/7770 cut-off events. For 1778545/1778600 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 46115 event pairs, 1019 based on Foata normal form. 16/7745 useless extension candidates. Maximal degree in co-relation 91508. Up to 6818 conditions per place. [2024-06-21 18:39:11,518 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 614 selfloop transitions, 173 changer transitions 0/800 dead transitions. [2024-06-21 18:39:11,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 800 transitions, 14760 flow [2024-06-21 18:39:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:39:11,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:39:11,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-21 18:39:11,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511627906976744 [2024-06-21 18:39:11,519 INFO L175 Difference]: Start difference. First operand has 383 places, 761 transitions, 12703 flow. Second operand 10 states and 194 transitions. [2024-06-21 18:39:11,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 800 transitions, 14760 flow [2024-06-21 18:39:16,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 800 transitions, 14289 flow, removed 72 selfloop flow, removed 6 redundant places. [2024-06-21 18:39:16,679 INFO L231 Difference]: Finished difference. Result has 387 places, 763 transitions, 12687 flow [2024-06-21 18:39:16,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12232, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12687, PETRI_PLACES=387, PETRI_TRANSITIONS=763} [2024-06-21 18:39:16,679 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 343 predicate places. [2024-06-21 18:39:16,679 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 763 transitions, 12687 flow [2024-06-21 18:39:16,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-21 18:39:16,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:39:16,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:39:16,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 18:39:16,680 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:39:16,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:39:16,680 INFO L85 PathProgramCache]: Analyzing trace with hash -106503238, now seen corresponding path program 12 times [2024-06-21 18:39:16,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:39:16,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186210502] [2024-06-21 18:39:16,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:39:16,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:39:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:20,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:20,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186210502] [2024-06-21 18:39:20,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186210502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:20,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:20,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:39:20,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83274687] [2024-06-21 18:39:20,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:20,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:39:20,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:20,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:39:20,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:39:20,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:39:20,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 763 transitions, 12687 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:39:20,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:20,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:39:20,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:23,360 INFO L124 PetriNetUnfolderBase]: 5049/7816 cut-off events. [2024-06-21 18:39:23,361 INFO L125 PetriNetUnfolderBase]: For 1819741/1819806 co-relation queries the response was YES. [2024-06-21 18:39:23,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92870 conditions, 7816 events. 5049/7816 cut-off events. For 1819741/1819806 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 46456 event pairs, 1015 based on Foata normal form. 16/7792 useless extension candidates. Maximal degree in co-relation 92682. Up to 6775 conditions per place. [2024-06-21 18:39:23,509 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 615 selfloop transitions, 179 changer transitions 0/807 dead transitions. [2024-06-21 18:39:23,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 807 transitions, 15238 flow [2024-06-21 18:39:23,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:39:23,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:39:23,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-21 18:39:23,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48320413436692505 [2024-06-21 18:39:23,511 INFO L175 Difference]: Start difference. First operand has 387 places, 763 transitions, 12687 flow. Second operand 9 states and 187 transitions. [2024-06-21 18:39:23,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 807 transitions, 15238 flow [2024-06-21 18:39:28,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 807 transitions, 14801 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-21 18:39:28,325 INFO L231 Difference]: Finished difference. Result has 388 places, 767 transitions, 12823 flow [2024-06-21 18:39:28,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12250, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12823, PETRI_PLACES=388, PETRI_TRANSITIONS=767} [2024-06-21 18:39:28,325 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 344 predicate places. [2024-06-21 18:39:28,325 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 767 transitions, 12823 flow [2024-06-21 18:39:28,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:39:28,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:39:28,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:39:28,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 18:39:28,326 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:39:28,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:39:28,327 INFO L85 PathProgramCache]: Analyzing trace with hash -100987253, now seen corresponding path program 12 times [2024-06-21 18:39:28,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:39:28,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037302651] [2024-06-21 18:39:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:39:28,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:39:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:31,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:31,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:31,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037302651] [2024-06-21 18:39:31,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037302651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:31,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:31,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:39:31,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433793864] [2024-06-21 18:39:31,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:31,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:39:31,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:31,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:39:31,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:39:31,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:39:31,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 767 transitions, 12823 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) [2024-06-21 18:39:31,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:31,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:39:31,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:34,390 INFO L124 PetriNetUnfolderBase]: 5097/7891 cut-off events. [2024-06-21 18:39:34,391 INFO L125 PetriNetUnfolderBase]: For 1865402/1865467 co-relation queries the response was YES. [2024-06-21 18:39:34,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93938 conditions, 7891 events. 5097/7891 cut-off events. For 1865402/1865467 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 47031 event pairs, 1015 based on Foata normal form. 25/7873 useless extension candidates. Maximal degree in co-relation 93750. Up to 6255 conditions per place. [2024-06-21 18:39:34,539 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 505 selfloop transitions, 314 changer transitions 0/832 dead transitions. [2024-06-21 18:39:34,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 832 transitions, 16737 flow [2024-06-21 18:39:34,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:39:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:39:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2024-06-21 18:39:34,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2024-06-21 18:39:34,541 INFO L175 Difference]: Start difference. First operand has 388 places, 767 transitions, 12823 flow. Second operand 10 states and 220 transitions. [2024-06-21 18:39:34,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 832 transitions, 16737 flow [2024-06-21 18:39:39,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 832 transitions, 16389 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-21 18:39:39,505 INFO L231 Difference]: Finished difference. Result has 393 places, 773 transitions, 13277 flow [2024-06-21 18:39:39,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12475, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13277, PETRI_PLACES=393, PETRI_TRANSITIONS=773} [2024-06-21 18:39:39,506 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 349 predicate places. [2024-06-21 18:39:39,506 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 773 transitions, 13277 flow [2024-06-21 18:39:39,506 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) [2024-06-21 18:39:39,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:39:39,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:39:39,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 18:39:39,506 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:39:39,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:39:39,508 INFO L85 PathProgramCache]: Analyzing trace with hash -100992833, now seen corresponding path program 13 times [2024-06-21 18:39:39,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:39:39,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703362845] [2024-06-21 18:39:39,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:39:39,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:39:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:42,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:42,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703362845] [2024-06-21 18:39:42,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703362845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:42,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:42,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:39:42,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490154765] [2024-06-21 18:39:42,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:42,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:39:42,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:42,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:39:42,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:39:42,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:39:42,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 773 transitions, 13277 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-21 18:39:42,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:42,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:39:42,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:45,842 INFO L124 PetriNetUnfolderBase]: 5133/7943 cut-off events. [2024-06-21 18:39:45,842 INFO L125 PetriNetUnfolderBase]: For 1901528/1901593 co-relation queries the response was YES. [2024-06-21 18:39:45,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95639 conditions, 7943 events. 5133/7943 cut-off events. For 1901528/1901593 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 47433 event pairs, 1013 based on Foata normal form. 24/7923 useless extension candidates. Maximal degree in co-relation 95448. Up to 6210 conditions per place. [2024-06-21 18:39:45,984 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 501 selfloop transitions, 319 changer transitions 0/833 dead transitions. [2024-06-21 18:39:45,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 833 transitions, 17108 flow [2024-06-21 18:39:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:39:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:39:45,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-06-21 18:39:45,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906976744186046 [2024-06-21 18:39:45,986 INFO L175 Difference]: Start difference. First operand has 393 places, 773 transitions, 13277 flow. Second operand 10 states and 211 transitions. [2024-06-21 18:39:45,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 833 transitions, 17108 flow [2024-06-21 18:39:50,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 833 transitions, 16516 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-21 18:39:50,963 INFO L231 Difference]: Finished difference. Result has 397 places, 776 transitions, 13417 flow [2024-06-21 18:39:50,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12685, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13417, PETRI_PLACES=397, PETRI_TRANSITIONS=776} [2024-06-21 18:39:50,964 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 353 predicate places. [2024-06-21 18:39:50,964 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 776 transitions, 13417 flow [2024-06-21 18:39:50,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-21 18:39:50,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:39:50,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:39:50,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 18:39:50,965 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:39:50,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:39:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1015866931, now seen corresponding path program 14 times [2024-06-21 18:39:50,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:39:50,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880090544] [2024-06-21 18:39:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:39:50,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:39:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:39:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:39:54,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:39:54,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880090544] [2024-06-21 18:39:54,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880090544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:39:54,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:39:54,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:39:54,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975261704] [2024-06-21 18:39:54,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:39:54,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:39:54,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:39:54,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:39:54,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:39:54,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-21 18:39:54,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 776 transitions, 13417 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) [2024-06-21 18:39:54,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:39:54,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-21 18:39:54,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:39:57,641 INFO L124 PetriNetUnfolderBase]: 5140/7951 cut-off events. [2024-06-21 18:39:57,641 INFO L125 PetriNetUnfolderBase]: For 1929666/1929721 co-relation queries the response was YES. [2024-06-21 18:39:57,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95731 conditions, 7951 events. 5140/7951 cut-off events. For 1929666/1929721 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 47467 event pairs, 1013 based on Foata normal form. 15/7920 useless extension candidates. Maximal degree in co-relation 95539. Up to 6320 conditions per place. [2024-06-21 18:39:57,771 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 490 selfloop transitions, 326 changer transitions 0/829 dead transitions. [2024-06-21 18:39:57,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 829 transitions, 16750 flow [2024-06-21 18:39:57,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:39:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:39:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2024-06-21 18:39:57,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023255813953489 [2024-06-21 18:39:57,773 INFO L175 Difference]: Start difference. First operand has 397 places, 776 transitions, 13417 flow. Second operand 10 states and 216 transitions. [2024-06-21 18:39:57,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 829 transitions, 16750 flow [2024-06-21 18:40:02,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 829 transitions, 16086 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-21 18:40:02,790 INFO L231 Difference]: Finished difference. Result has 400 places, 776 transitions, 13418 flow [2024-06-21 18:40:02,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12753, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13418, PETRI_PLACES=400, PETRI_TRANSITIONS=776} [2024-06-21 18:40:02,791 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 356 predicate places. [2024-06-21 18:40:02,791 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 776 transitions, 13418 flow [2024-06-21 18:40:02,791 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) [2024-06-21 18:40:02,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:02,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:02,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 18:40:02,792 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:40:02,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash -100992988, now seen corresponding path program 13 times [2024-06-21 18:40:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:02,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914396739] [2024-06-21 18:40:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:02,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:06,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:06,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914396739] [2024-06-21 18:40:06,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914396739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:06,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:06,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:40:06,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263419074] [2024-06-21 18:40:06,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:06,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:40:06,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:06,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:40:06,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:40:06,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:40:06,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 776 transitions, 13418 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:40:06,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:06,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:40:06,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:09,742 INFO L124 PetriNetUnfolderBase]: 5120/7921 cut-off events. [2024-06-21 18:40:09,742 INFO L125 PetriNetUnfolderBase]: For 1940458/1940513 co-relation queries the response was YES. [2024-06-21 18:40:09,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95047 conditions, 7921 events. 5120/7921 cut-off events. For 1940458/1940513 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 47173 event pairs, 1017 based on Foata normal form. 16/7895 useless extension candidates. Maximal degree in co-relation 94854. Up to 7012 conditions per place. [2024-06-21 18:40:09,887 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 626 selfloop transitions, 175 changer transitions 0/814 dead transitions. [2024-06-21 18:40:09,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 814 transitions, 15427 flow [2024-06-21 18:40:09,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:40:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:40:09,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-21 18:40:09,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702842377260982 [2024-06-21 18:40:09,888 INFO L175 Difference]: Start difference. First operand has 400 places, 776 transitions, 13418 flow. Second operand 9 states and 182 transitions. [2024-06-21 18:40:09,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 814 transitions, 15427 flow [2024-06-21 18:40:16,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 814 transitions, 14895 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-21 18:40:16,306 INFO L231 Difference]: Finished difference. Result has 402 places, 776 transitions, 13243 flow [2024-06-21 18:40:16,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12886, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13243, PETRI_PLACES=402, PETRI_TRANSITIONS=776} [2024-06-21 18:40:16,307 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 358 predicate places. [2024-06-21 18:40:16,307 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 776 transitions, 13243 flow [2024-06-21 18:40:16,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:40:16,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:16,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:16,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 18:40:16,307 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:40:16,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:16,308 INFO L85 PathProgramCache]: Analyzing trace with hash -100777507, now seen corresponding path program 1 times [2024-06-21 18:40:16,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:16,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695255661] [2024-06-21 18:40:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:16,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:19,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:19,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695255661] [2024-06-21 18:40:19,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695255661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:19,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:19,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:40:19,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058112794] [2024-06-21 18:40:19,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:19,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:40:19,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:19,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:40:19,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:40:19,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-21 18:40:19,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 776 transitions, 13243 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-21 18:40:19,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:19,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-21 18:40:19,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:22,238 INFO L124 PetriNetUnfolderBase]: 5654/8517 cut-off events. [2024-06-21 18:40:22,239 INFO L125 PetriNetUnfolderBase]: For 1965487/1965506 co-relation queries the response was YES. [2024-06-21 18:40:22,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97896 conditions, 8517 events. 5654/8517 cut-off events. For 1965487/1965506 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 48357 event pairs, 1313 based on Foata normal form. 4/8496 useless extension candidates. Maximal degree in co-relation 97703. Up to 7859 conditions per place. [2024-06-21 18:40:22,395 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 701 selfloop transitions, 120 changer transitions 0/832 dead transitions. [2024-06-21 18:40:22,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 832 transitions, 15458 flow [2024-06-21 18:40:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:40:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:40:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-21 18:40:22,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2024-06-21 18:40:22,397 INFO L175 Difference]: Start difference. First operand has 402 places, 776 transitions, 13243 flow. Second operand 10 states and 192 transitions. [2024-06-21 18:40:22,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 832 transitions, 15458 flow [2024-06-21 18:40:28,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 832 transitions, 15089 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 18:40:28,985 INFO L231 Difference]: Finished difference. Result has 406 places, 797 transitions, 13472 flow [2024-06-21 18:40:28,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12874, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13472, PETRI_PLACES=406, PETRI_TRANSITIONS=797} [2024-06-21 18:40:28,986 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 362 predicate places. [2024-06-21 18:40:28,986 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 797 transitions, 13472 flow [2024-06-21 18:40:28,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-21 18:40:28,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:28,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:28,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 18:40:28,986 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:40:28,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:28,988 INFO L85 PathProgramCache]: Analyzing trace with hash 557042698, now seen corresponding path program 2 times [2024-06-21 18:40:28,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:28,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216040088] [2024-06-21 18:40:28,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:28,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:31,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:31,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216040088] [2024-06-21 18:40:31,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216040088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:31,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:31,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:40:31,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179178413] [2024-06-21 18:40:31,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:31,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:40:31,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:31,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:40:31,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:40:31,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:40:31,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 797 transitions, 13472 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:40:31,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:31,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:40:31,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:34,115 INFO L124 PetriNetUnfolderBase]: 5253/8104 cut-off events. [2024-06-21 18:40:34,116 INFO L125 PetriNetUnfolderBase]: For 1920826/1920875 co-relation queries the response was YES. [2024-06-21 18:40:34,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94181 conditions, 8104 events. 5253/8104 cut-off events. For 1920826/1920875 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 47784 event pairs, 1186 based on Foata normal form. 23/8097 useless extension candidates. Maximal degree in co-relation 93984. Up to 7300 conditions per place. [2024-06-21 18:40:34,272 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 643 selfloop transitions, 57 changer transitions 0/826 dead transitions. [2024-06-21 18:40:34,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 826 transitions, 15310 flow [2024-06-21 18:40:34,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:40:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:40:34,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-21 18:40:34,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-21 18:40:34,273 INFO L175 Difference]: Start difference. First operand has 406 places, 797 transitions, 13472 flow. Second operand 8 states and 150 transitions. [2024-06-21 18:40:34,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 826 transitions, 15310 flow [2024-06-21 18:40:40,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 826 transitions, 14616 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-21 18:40:40,148 INFO L231 Difference]: Finished difference. Result has 406 places, 807 transitions, 13050 flow [2024-06-21 18:40:40,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12778, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=743, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13050, PETRI_PLACES=406, PETRI_TRANSITIONS=807} [2024-06-21 18:40:40,149 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 362 predicate places. [2024-06-21 18:40:40,149 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 807 transitions, 13050 flow [2024-06-21 18:40:40,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:40:40,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:40,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:40,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 18:40:40,149 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:40:40,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:40,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1919085117, now seen corresponding path program 15 times [2024-06-21 18:40:40,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:40,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929571849] [2024-06-21 18:40:40,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:40,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:42,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:42,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929571849] [2024-06-21 18:40:42,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929571849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:42,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:42,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:40:42,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050776281] [2024-06-21 18:40:42,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:42,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:40:42,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:42,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:40:42,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:40:42,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:40:42,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 807 transitions, 13050 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:40:42,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:42,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:40:42,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:45,394 INFO L124 PetriNetUnfolderBase]: 5197/8041 cut-off events. [2024-06-21 18:40:45,395 INFO L125 PetriNetUnfolderBase]: For 2053423/2053450 co-relation queries the response was YES. [2024-06-21 18:40:45,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96566 conditions, 8041 events. 5197/8041 cut-off events. For 2053423/2053450 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 48075 event pairs, 1530 based on Foata normal form. 4/7990 useless extension candidates. Maximal degree in co-relation 96367. Up to 7060 conditions per place. [2024-06-21 18:40:45,542 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 729 selfloop transitions, 116 changer transitions 0/859 dead transitions. [2024-06-21 18:40:45,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 859 transitions, 16292 flow [2024-06-21 18:40:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:40:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:40:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-21 18:40:45,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-21 18:40:45,543 INFO L175 Difference]: Start difference. First operand has 406 places, 807 transitions, 13050 flow. Second operand 10 states and 200 transitions. [2024-06-21 18:40:45,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 859 transitions, 16292 flow [2024-06-21 18:40:52,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 859 transitions, 16205 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-21 18:40:52,211 INFO L231 Difference]: Finished difference. Result has 414 places, 817 transitions, 13604 flow [2024-06-21 18:40:52,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12963, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13604, PETRI_PLACES=414, PETRI_TRANSITIONS=817} [2024-06-21 18:40:52,212 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 370 predicate places. [2024-06-21 18:40:52,212 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 817 transitions, 13604 flow [2024-06-21 18:40:52,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:40:52,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:40:52,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:40:52,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 18:40:52,213 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:40:52,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:40:52,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1969980218, now seen corresponding path program 14 times [2024-06-21 18:40:52,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:40:52,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143768229] [2024-06-21 18:40:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:40:52,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:40:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:40:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:40:54,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:40:54,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143768229] [2024-06-21 18:40:54,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143768229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:40:54,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:40:54,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:40:54,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132615309] [2024-06-21 18:40:54,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:40:54,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:40:54,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:40:54,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:40:54,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:40:55,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:40:55,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 817 transitions, 13604 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:40:55,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:40:55,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:40:55,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:40:57,905 INFO L124 PetriNetUnfolderBase]: 5234/8096 cut-off events. [2024-06-21 18:40:57,905 INFO L125 PetriNetUnfolderBase]: For 2114819/2114842 co-relation queries the response was YES. [2024-06-21 18:40:58,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99092 conditions, 8096 events. 5234/8096 cut-off events. For 2114819/2114842 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 48403 event pairs, 1540 based on Foata normal form. 4/8046 useless extension candidates. Maximal degree in co-relation 98889. Up to 7437 conditions per place. [2024-06-21 18:40:58,063 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 771 selfloop transitions, 67 changer transitions 0/852 dead transitions. [2024-06-21 18:40:58,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 852 transitions, 15715 flow [2024-06-21 18:40:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:40:58,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:40:58,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-21 18:40:58,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43488372093023253 [2024-06-21 18:40:58,065 INFO L175 Difference]: Start difference. First operand has 414 places, 817 transitions, 13604 flow. Second operand 10 states and 187 transitions. [2024-06-21 18:40:58,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 852 transitions, 15715 flow [2024-06-21 18:41:05,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 852 transitions, 15170 flow, removed 128 selfloop flow, removed 7 redundant places. [2024-06-21 18:41:05,669 INFO L231 Difference]: Finished difference. Result has 417 places, 819 transitions, 13312 flow [2024-06-21 18:41:05,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13059, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=750, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13312, PETRI_PLACES=417, PETRI_TRANSITIONS=819} [2024-06-21 18:41:05,670 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 373 predicate places. [2024-06-21 18:41:05,670 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 819 transitions, 13312 flow [2024-06-21 18:41:05,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:05,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:41:05,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:41:05,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 18:41:05,671 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:41:05,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:41:05,672 INFO L85 PathProgramCache]: Analyzing trace with hash 856395347, now seen corresponding path program 16 times [2024-06-21 18:41:05,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:41:05,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240023777] [2024-06-21 18:41:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:41:05,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:41:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:41:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:41:08,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:41:08,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240023777] [2024-06-21 18:41:08,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240023777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:41:08,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:41:08,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:41:08,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944258189] [2024-06-21 18:41:08,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:41:08,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:41:08,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:41:08,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:41:08,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:41:08,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:41:08,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 819 transitions, 13312 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:08,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:41:08,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:41:08,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:41:11,228 INFO L124 PetriNetUnfolderBase]: 5244/8116 cut-off events. [2024-06-21 18:41:11,228 INFO L125 PetriNetUnfolderBase]: For 2136796/2136819 co-relation queries the response was YES. [2024-06-21 18:41:11,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98772 conditions, 8116 events. 5244/8116 cut-off events. For 2136796/2136819 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 48630 event pairs, 1533 based on Foata normal form. 5/8069 useless extension candidates. Maximal degree in co-relation 98568. Up to 7445 conditions per place. [2024-06-21 18:41:11,382 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 785 selfloop transitions, 62 changer transitions 0/861 dead transitions. [2024-06-21 18:41:11,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 861 transitions, 15476 flow [2024-06-21 18:41:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:41:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:41:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-21 18:41:11,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43488372093023253 [2024-06-21 18:41:11,383 INFO L175 Difference]: Start difference. First operand has 417 places, 819 transitions, 13312 flow. Second operand 10 states and 187 transitions. [2024-06-21 18:41:11,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 861 transitions, 15476 flow [2024-06-21 18:41:19,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 861 transitions, 15236 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-21 18:41:19,010 INFO L231 Difference]: Finished difference. Result has 422 places, 828 transitions, 13378 flow [2024-06-21 18:41:19,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13072, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13378, PETRI_PLACES=422, PETRI_TRANSITIONS=828} [2024-06-21 18:41:19,011 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 378 predicate places. [2024-06-21 18:41:19,011 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 828 transitions, 13378 flow [2024-06-21 18:41:19,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:19,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:41:19,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:41:19,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 18:41:19,011 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:41:19,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:41:19,012 INFO L85 PathProgramCache]: Analyzing trace with hash 248346674, now seen corresponding path program 15 times [2024-06-21 18:41:19,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:41:19,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964446269] [2024-06-21 18:41:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:41:19,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:41:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:41:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:41:21,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:41:21,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964446269] [2024-06-21 18:41:21,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964446269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:41:21,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:41:21,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:41:21,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075583760] [2024-06-21 18:41:21,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:41:21,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:41:21,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:41:21,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:41:21,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:41:21,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:41:21,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 828 transitions, 13378 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:21,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:41:21,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:41:21,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:41:24,676 INFO L124 PetriNetUnfolderBase]: 5281/8167 cut-off events. [2024-06-21 18:41:24,677 INFO L125 PetriNetUnfolderBase]: For 2183405/2183428 co-relation queries the response was YES. [2024-06-21 18:41:24,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99989 conditions, 8167 events. 5281/8167 cut-off events. For 2183405/2183428 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 48895 event pairs, 1545 based on Foata normal form. 4/8116 useless extension candidates. Maximal degree in co-relation 99782. Up to 7552 conditions per place. [2024-06-21 18:41:24,840 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 796 selfloop transitions, 55 changer transitions 0/865 dead transitions. [2024-06-21 18:41:24,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 865 transitions, 15546 flow [2024-06-21 18:41:24,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:41:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:41:24,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-21 18:41:24,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43488372093023253 [2024-06-21 18:41:24,842 INFO L175 Difference]: Start difference. First operand has 422 places, 828 transitions, 13378 flow. Second operand 10 states and 187 transitions. [2024-06-21 18:41:24,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 865 transitions, 15546 flow [2024-06-21 18:41:31,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 865 transitions, 15467 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-21 18:41:31,736 INFO L231 Difference]: Finished difference. Result has 428 places, 830 transitions, 13532 flow [2024-06-21 18:41:31,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13299, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=773, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13532, PETRI_PLACES=428, PETRI_TRANSITIONS=830} [2024-06-21 18:41:31,737 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 384 predicate places. [2024-06-21 18:41:31,737 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 830 transitions, 13532 flow [2024-06-21 18:41:31,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:31,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:41:31,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:41:31,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 18:41:31,737 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:41:31,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:41:31,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1913371197, now seen corresponding path program 17 times [2024-06-21 18:41:31,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:41:31,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069284587] [2024-06-21 18:41:31,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:41:31,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:41:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:41:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:41:34,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:41:34,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069284587] [2024-06-21 18:41:34,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069284587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:41:34,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:41:34,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:41:34,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037495919] [2024-06-21 18:41:34,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:41:34,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:41:34,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:41:34,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:41:34,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:41:34,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:41:34,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 830 transitions, 13532 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:34,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:41:34,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:41:34,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:41:38,169 INFO L124 PetriNetUnfolderBase]: 5311/8214 cut-off events. [2024-06-21 18:41:38,170 INFO L125 PetriNetUnfolderBase]: For 2230247/2230270 co-relation queries the response was YES. [2024-06-21 18:41:38,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100966 conditions, 8214 events. 5311/8214 cut-off events. For 2230247/2230270 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 49255 event pairs, 1532 based on Foata normal form. 5/8166 useless extension candidates. Maximal degree in co-relation 100757. Up to 7390 conditions per place. [2024-06-21 18:41:38,398 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 756 selfloop transitions, 106 changer transitions 0/876 dead transitions. [2024-06-21 18:41:38,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 876 transitions, 16236 flow [2024-06-21 18:41:38,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:41:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:41:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-21 18:41:38,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-21 18:41:38,405 INFO L175 Difference]: Start difference. First operand has 428 places, 830 transitions, 13532 flow. Second operand 10 states and 195 transitions. [2024-06-21 18:41:38,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 876 transitions, 16236 flow [2024-06-21 18:41:45,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 876 transitions, 16021 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-21 18:41:45,632 INFO L231 Difference]: Finished difference. Result has 430 places, 835 transitions, 13649 flow [2024-06-21 18:41:45,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13317, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13649, PETRI_PLACES=430, PETRI_TRANSITIONS=835} [2024-06-21 18:41:45,632 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 386 predicate places. [2024-06-21 18:41:45,632 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 835 transitions, 13649 flow [2024-06-21 18:41:45,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:41:45,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:41:45,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:41:45,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 18:41:45,633 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 18:41:45,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:41:45,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1113097667, now seen corresponding path program 18 times [2024-06-21 18:41:45,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:41:45,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973840506] [2024-06-21 18:41:45,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:41:45,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:41:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:41:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:41:47,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:41:47,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973840506] [2024-06-21 18:41:47,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973840506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:41:47,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:41:47,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:41:47,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700051586] [2024-06-21 18:41:47,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:41:47,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:41:47,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:41:47,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:41:47,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:41:48,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-21 18:41:48,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 835 transitions, 13649 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-21 18:41:48,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:41:48,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-21 18:41:48,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:41:51,780 INFO L124 PetriNetUnfolderBase]: 5341/8255 cut-off events. [2024-06-21 18:41:51,780 INFO L125 PetriNetUnfolderBase]: For 2270047/2270070 co-relation queries the response was YES. [2024-06-21 18:41:51,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101782 conditions, 8255 events. 5341/8255 cut-off events. For 2270047/2270070 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 49499 event pairs, 1540 based on Foata normal form. 6/8205 useless extension candidates. Maximal degree in co-relation 101572. Up to 7615 conditions per place. [2024-06-21 18:41:51,938 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 816 selfloop transitions, 47 changer transitions 0/877 dead transitions. [2024-06-21 18:41:51,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 877 transitions, 16314 flow [2024-06-21 18:41:51,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:41:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:41:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-21 18:41:51,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42071881606765327 [2024-06-21 18:41:51,940 INFO L175 Difference]: Start difference. First operand has 430 places, 835 transitions, 13649 flow. Second operand 11 states and 199 transitions. [2024-06-21 18:41:51,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 877 transitions, 16314 flow Killed by 15